High-Performance Gas Sensing of CO: Comparative Tests for Semiconducting (SnO2-Based) and for Amperometric Gas Sensors, N. Barsan, J.R. Stetter, M. Findlay Jr., W. Göpel, Anal. Chem., 71, 1999, 2512-2517.

Influence of the catalytic introduction procedure on the nano-SnO2 gas sensor performances Where and how stay the catalytic atoms?, A. Cabot, A. Dieguez, A. Romano-Rodriguez, J.R. Morante, N. Barsan, Sensors and Actuators, B 79, 2001, 98 - 106.

Grain Size Control in Nanocrystalline In₂O₃ Semiconductor Gas Sensors, A. Gurlo, M. Ivanovskaya, N. Barsan, M. Schweizer-Berberich, U. Weimar and W. Göpel, Sensors and Actuators B, 44, 1997, 327-333.

Parameter optimisation in SnO₂ gas sensors for NO₂ detection with low cross-sensitivity to CO: sol-gel preparation, film preparation, powder calcination, doping and grinding, A. Diéguez, A. Romano-Rodriguez, JL. Alay, J.R. Morante, N. Barsan, J. Kappler, U. Weimar and W. Göpel, Sensors and Actuators B, 2000, 65, 166-168.

CO consumption of Pd doped SnO₂ based sensors, J. Kappler, A. Tomescu, N. Barsan, U. Weimar, Thin Solid Films, 391, 2001, 186-191.

Analysis of CO and CH₄ gas mixtures by using a micromachined sensor array, S. Capone, P. Siciliano, N. Barsan, U. Weimar, L. Vasanelli, Sensors and Actuators B, 78, 2001, 40-48.

Investigation of CO/CH₄ mixtures measured with differently doped SnO₂ sensors, S. Hahn, N. Barsan, U. Weimar, Sensors and Actuators B, 78, 2001, 64-68.

In situ diffuse reflectance infrared spectroscopy study of CO adsorption on SnO₂, S. Emiroglu, N. Barsan, U. Weimar, V. Hoffmann, Thin Solid Films, 391, 2001, 176-185.

High resolution photoemission study on SnO₂ gas sensors, M. Sinner-Hettenbach, N. Barsan, U. Weimar, T. Weiß, H. von Schenk, M. Göthelid, L. Giovanelly, G. Le Lay, Thin Solid Films B, 391, 2001, 192-197.

State of the Art of Gas Sensors - MOX Sensors as a Working Example, J. Kappler, N. Barsan, U. Weimar, Photoelectronics B, 10, 2001, 3-5.

Conduction Model of Metal Oxide Gas Sensors, N. Barsan and U. Weimar, Journal of Electroceramics, 7, 2001, 143-167.

Fuzzy inference system for sensor array calibration: prediction of CO and CH₄ levels in variable humidity conditions, T. Sundic, S. Marco, A. Perera, A. Pardo, S.Hahn, N. Barsan, U. Weimar, Chemometrics, 64, 2003, 103-122.

Sensing of hydrocarbons with tin oxide sensors: Possible reaction path as revealed by consumption measurements, W. Schmid, N. Barsan, U. Weimar, Sensors and Actuators B, 89, 2003, 232-236.

Understanding the fundamental principles of metal oxide based gas sensors; the example of CO sensing with SnO₂ sensors in the presence of humidity, N. Barsan and U. Weimar, J. Phys. Condens. Matter, 15, 2003, R813-R83.

Corundum-type indium (III) oxide: formation under ambient conditions in Fe₂O₃-In₂O₃ system, A. Gurlo, M. Ivanovskaya, N. Barsan, U. Weimar, Inorganic Chemistry Comm., 6, 2003, 569-572.

CO sensing with SnO₂ thick film sensors: role of oxygen and water vapour, S. Hahn, N. Barsan, U. Weimar, S.G. Ejakov, H.J. Visser, R.E. Soltis,, Thin Solid Films, 436, 2003, 17-24.

Drift studies of thick film un-doped and Pd-doped SnO₂ sensors: temperature changes effect and CO detection mechanism in the presence of water vapour, S. Harbeck, A. Szatvanyi, N. Barsan, U. Weimar and V. Hoffmann, Thin Solid Films, 436, 2003, 76-83.

Polycrystalline Well-Shaped Blocks of Indium Oxide Obtained by the Sol-Gel Method and Their Gas-Sensing Properties, A. Gurlo, N. Barsan, U. Weimar, M. Ivanovskaya, A. Taurino and P. Siciliano, Chem. Mater., 15, 2003, 4377-4383.

CMOS monolithic metal – oxide sensor system comprising a microhotplate and associated circuitry, M. Graf, D.Barrettino, M. Zimmermann, A. Hierlemann, H. Baltes, S. Hahn, N. Barsan and U. Weimar, IEEE Sensors Journal, 4, 2004, 9-16.

Flame spray synthesis of tin dioxide nanoparticles for gas sensing, T.Sahm, L.Mädler, A.Gurlo, N.Barsan, S.E. Pratsinis, U.Weimar, Sensors and Actuators B, 98, 2004, 148-153.

Ambient pressure synthesis of corundum-type In₂O₃, M.Epifani, P.Siciliano, A.Gurlo, N.Barsan, U.Weimar, Journal of the American Chemical Society, 2004.

A p- to n- transition on α-Fe₂O₃-based thick film sensors studied by conductance and work function change measurements, A.Gurlo, M.Sahm, A.Oprea, N.Barsan, U.Weimar, Sensors and Actuators B, 2004.

A n- to p- conductivity transition induced by oxygen adsorption on α-Fe₂O₃, A.Gurlo, N.Barsan, A.Oprea, M.Sahm, T.Sahm, U.Weimar, Applied Physics Letters, 85, 2004, 2280-2282.

Sensing of hydrocarbons and CO in low oxygen conditions with tin dioxide sensors: possible conversion paths, W. Schmid, N. Barsan, U. Weimar, Sensors & Actuators B,, 103, 2004, 362-368.

TaON and Ta₃N₅ thin films: a new class of gas sensors, O. Merdrignac-Conanec, M. Kerlau, M. Guilloux-Viry, R. Marchand, N. Barsan, U. Weimar, Silicates Industriels, 69, 2004, 141-145.

Monitoring of Oil Aerosol Contamination in Pressurised Air with SnO₂-based Thick Film Sensors in Real Life Conditions, N. Papamichail, N. Barsan, U. Weimar, Sensors and Actuators B, B 106, 2005, 61 - 66.

Water-oxygen interplay on tin dioxide surface: Implication on gas sensing, D. Koziej, N. Barsan, U. Weimar, J. Szuber, K. Shimanoe and N. Yamazoe, Chemical Physics Letters, 410, 2005, 321-323.

Complementary Phenomenological and Spectroscopic Studies of Propane Sensing with Tin Oxide Based Sensors, D. Koziej, N. Barsan, V. Hoffmann, J. Szuber, U. Weimar, Sensors & Actuators B,, 108, 2005, 75-83.

Fundamental studies on SnO₂ by means of simultaneous work function change and conductance measurements, T. Sahm, A. Gurlo, N. Barsan, U. Weimar, L. Mädler, Thin Solid Films, 490, 2005, 43-47.

Ammonia Detection Mechanism with Polyacrylic Acid Sensitive Layers: Field Effect Transduction, A. Oprea, N. Barsan, U. Weimar, Sensors and Actuators B, 111-112, 2005, 577-581.

Direct formation of highly porous gas-sensing films by in situ thermophoretic deposition of flame-made Pt/SnO₂ nanoparticles, L. Mädler, A. Roessler, S.E. Pratsinis, T. Sahm, A. Gurlo, N. Barsan and U. Weimar, Sensors and Actuators B, 114, 2005, 283-295.

Properties of Indium Oxide Semiconducting Sensors Deposited by Different Techniques, T. Sahm, A. Gurlo, N. Barsan, U.Weimar, Journal of Particulate Science, 24, 2006, 441-452.

Conduction model of SnO₂ thin films based on conductance and Hall effect measurements, A. Oprea, E. Moretton, N. Barsan, W.J. Becker, J. Wöllenstein and U. Weimar, Journal of Applied Physics, 100, 2006, art. no. 033716.

Sensing low concentrations of CO using flame-spray made Pt/SnO₂ nanoparticles, L. Mädler, T. Sahm, A. Gurlo, J.D. Grunwaldt, N. Barsan, U. Weimar and S.E. Pratsinis, J. Nanoparticle Res., 8, 2006, 783-796.

Microfabricated gas sensor systems with nanocrystalline metal-oxide sensitive films, M. Graf, A. Gurlo, N. Barsan, U. Weimar and A. Hierlemann, J. Nanoparticle Res., 8, 2006, 823-839.

Template-free synthesis and assembly of single-crystalline tungsten oxide nanowires and their gas-sensing properties, J. Polleux, A. Gurlo, N. Barsan, U. Weimar, M. Antonietti and M. Niederberger, Angewandte Chemie, 44, 2005, 1-6.

Preparation and characterization of gallium (oxy)nitride powders. Preliminary investigation as new gas sensor materials, M. Kerlau, O. Merdrignac-Conanec, P. Reichel, N. Barsan, U. Weimar, Sensors and Actuators B, 115, 2006, 4-11.

On-Line Novelty Detection by Recursive Dynamic Principal Component Analysis and Gas Sensor Arrays Under Drift Conditions, A. Perera, N. Papamichail, N. Barsan, U. Weimar, S. Marco, IEEE Sensors Journal, 6, 2006, 770-783.

Basics of oxygen and SnO₂ interaction, work function change and conductivity measurements, T. Sahm, A. Gurlo, N. Barsan and U. Weimar, Sensors and Actuators B, 118, 2006, 78-83.

Spectroscopic insights into CO sensing of undoped and palladium doped tin dioxide sensors derived from hydrothermally treated tin oxide sol, D. Koziej, N. Barsan, K. Shimanoe, N. Yamazoe, J. Szuber,and U. Weimar, Sensors & Actuators B,, 118, 2006, 98-104.

Formation of Multilayer Films for Gas-sensing by In-situ Thermophoretic Deposition of Nanoparticles from Aerosol Phase, T.Sahm, W. Rong, N. Barsan, L. Maedler, S. Friedlander and U. Weimar, Journal of Materials Research, 4, 2007, 22, 850-857.

Detection of propane by “GaON” thick-film gas sensors, M. Kerlau, P. Reichel, N. Barsan, U. Weimar, S. Delsarte-Guéguen and O. Merdrignac-Conanec, Sensors and Actuators B, 122, 2007, 14-19.

Influence of annealing temperature on the CO sensing mechanism for tin dioxide based sensors – Operando studies, D. Koziej, K. Thomas, N. Barsan, F. Thibault–Starzyk and U. Weimar, Catalysis Today, 126, 2007, 211-218.

Water and ammonia influence on the conduction mechanisms in polyacrylic acid films, M. Sahm, A. Oprea, N. Barsan and U. Weimar, Sensors and Actuators, B 127, 2007, 204-209.

Characterization of granular metal oxide semiconductor gas sensitive layers by using Hall effect based approaches, A. Oprea, N. Barsan and U. Weimar, J. Phys. D: Appl. Phys., 40, 2007, 7217-7237.

Interdependence of Ammonia and Water Sorption in Polyacrylic Acid Layers, M. Sahm, A. Oprea, N. Barsan, U. Weimar, Sensors & Actuators B, 130, 2008, 502-507.

Capacitive Humidity Sensors on Flexible RFID Labels, A.Oprea, N. Barsan, U. Weimar, M.-L. Bauersfeld, D. Ebling, J. Wöllenstein, Sensors & Actuators B, 132, 2008, 404-410.

Limitations on the use of perovskite-structure oxides in gas sensing as a result of the concurrent operation of separate mechanisms, P.T. Moseley, A. Oprea, O. Merdrignac-Conanec, M. Kerlau, N. Barsan, U.Weimar, Sensors and Actuators B 133, 2008, 543–546.

Investigations of conduction mechanism in Cr₂O₃ gas sensing thick films by ac impedance spectroscopy and work function changes measurements, S. Pokhrel, C.E. Simion, V. Quemener, N. Barsan, U. Weimar, Sensors and Actuators B 133, 2008, 78-83.

Kelvin Probe measurements of polymer coated gold substrates: Mechanism studies, M. Hoerter, A. Oprea, N. Barsan, U. Weimar, Sensors and Actuators B, 134, 2008, 266-272.

Chemical interaction of gaseous ammonia and water vapour with polyacrylic acid layers, M. Hoerter, A. Oprea, N. Barsan, U. Weimar, Sensors and Actuators B, 134, 2008, 743-749.

Transport and gas sensing properties of In₂O₃ nanocrystalline thick films: A Hall effect based approach, A. Oprea, A. Gurlo, N. Barsan, U. Weimar, Sensors and Actuators B, 139, 2009, 322-328.

Temperature, humidity and gas sensors integrated on plastic foil for low power applications, A. Oprea, J. Courbat, N. Barsan, D. Briand, N.F. de Rooij, U. Weimar, Sensors and Actuators B, 140, 2009, 227-232.

Work function changes in gas sensitive materials: Fundamentals and applications, A. Oprea, N. Barsan and U. Weimar, Sensors and Actuators B, 142, 2009.

Neodymium Dioxide Carbonate as a Sensing Layer for Chemoresistive CO2 Sensing, I. Djerdj, A. Haensch, D. Koziej, S. Pokhrel, N. Barsan, U. Weimar, M. Niederberger, Chemistry of Materials, 21, 2009, 5375-5381.

Modeling of sensing and transduction for p-type semiconducting metal oxide gased gas sensors, N. Barsan, C. Simion, T. Heine, S. Pokhrel, U. Weimar, Journal of Electroceramics, 25, 2010, 11-19.

Influence of Material Properties on Hydrogen Sensing for SnO₂ Nanomaterials, M. Hübner, R. Pavelko, J. Kemmler, N. Barsan, U. Weimar, Procedia Chemistry, 1-1, 2009, 1423-1426.

Operando X-ray absorption spectroscopy studies on Pd-SnO₂ based sensors, D. Koziej, M. Hübner, N. Barsan, U. Weimar, M. Sikora, J.D. Grunwaldt, Phys. Chem. Chem. Phys., 11-38, 2009, 8620–8625.

Microporous ceramic coated SnO₂ sensors for hydrogen and carbon monoxide sensing in harsh reducing conditions, R. M. Prasad, A. Gurlo, R. Riedel, M. Hübner, N. Barsan, U. Weimar, Sensors and Actuators B: Chemical, 149-1, 2010, 105-109.

Nanoscale SnO₂ Hollow Spheres and its Application as a Gas Sensing Material, F. Gyger, M. Hübner, C. Feldmann, N. Barsan, U. Weimar, Chemistry of Materials, 22-16, 2010, 4821-4827.

CO sensing mechanism with WO₃ based gas sensors, M. Hübner, C.E. Simion, A. Haensch, N. Barsan, U. Weimar, Sensors and Actuators B: Chemical, 151, 2010, 103-106.

BaTi_0,95Rh_0,05O₃ catalytic filter – a promising candidate for the selective detection of CO in the presence of H₂, M. Hübner, A. Yuece, G.C. Mondragon, B. Saruhan, N. Barsan, U. Weimar, Procedia Engineering, 5, 2010, 107-110.

System for dosing formaldehyde vapor at the ppb level, F. Roeck, N. Barsan and U. Weimar, Measurement Science and Technology 21-11, article 115201, 2010.

Struktur und Verhalten von Platin in SnO₂-basierten Gassensoren unter realistischen Arbeitsbedingungen, M. Hübner, D. Koziej, M. Bauer, N. Barsan, K. Kvashnina, M. Rossell, U. Weimar , J.-D. Grunwaldt, Angewandte Chemie, 123, 2011, 2893-2896.

Influence of humidity on CO sensing with p-type CuO thick film gas sensors, M. H?bner, C.E. Simion, A. Tomescu-Stanoiu, S. Pokhrel, N. Barsan, U. Weimar, Sensors and Actuators B. Chemical, 153, 2011, 347-353.

Influence of Oxygen Backgrounds on Hydrogen Sensing with SnO₂ Nanomaterials, M. Hübner,R. Pavelko, N. Barsan, U. Weimar, Sensors and Actuators B: Chemical, 154, 2011, 264-269.

Conduction mechanism in SnO₂ based polycrystalline thick film gas sensors exposed to CO and H₂ in different oxygen backgrounds, N. Barsan, M. Hübner, U. Weimar, Sensors and Actuators B. Chemical, 157, 2011, 510-517.

Enhancing performance of FSP SnO ₂ based gas sensors through Sb-doping and Pd-functionalization, Katharina Großmann, Krisztina E. Kovács, David K. Pham, Lutz Mädler, Nicolae Barsan, Udo Weimar, Sensors and Actuators B: Chemical, 2011, 127, 388-392.

The Influence of Pt Doping on the Sensing and Conduction Mechanism of SnO₂ Based Thick Film Sensors, M. Hübner, S. Hafner, N. Barsan, U. Weimar, Procedia Engineering, 25, 2011, 104-107.

Interplay of H₂ , water vapor and oxygenat the surface of SnO₂ based gas sensors – An operando investigation utilizing deuterated gases, K. Großmann, R. Pavelko, N. Barsan, U. Weimar, Sensors and Actuators B: Chemical, 166-167, 2012, 172-180.

Influences of Al, Pd and Pt additives on the conduction mechansim as well as the surface and bulk properties of SnO₂ based polycrystalline thick film gas sensors, M. Hübner, N. Barsan, U. Weimar, Sensors and Actuators B: Chemical, 171-172, 2012, 172-180.

An Au clusters related spill-over sensitization mechanism in SnO(₂)-based gas sensors identified by operando HERFD-XAS, work function changes, DC resistance and catalytic conversion studies, M. Hübner, D. Koziej, J.D. Grunwaldt, U. Weimar, N. Barsan, Phys. Chem. Chem. Phys., 14-38, 2012, 13249-54.

Nonconventional phthalocyanines for field effect gas detection, W. Simmendinger, A. Oprea, N. Barsan, U. Weimar, Sensors and Actuators B: Chemical, Elsevier, 179, 2013, 54-60.

Contribution of polymeric swelling to the overall response of capacitive gas sensors, U. Altenberend, A. Oprea, N. Barsan, U. Weimar, Analytical and Bioanalytical Chemistry, Vol. 405, 2013, 6445-6452.

Co₃ O₄ - A systematic investigation of catalytic and gas sensing performance under variation of temperature, humidity, test gas and test gas concentration, S. Wicker, K. Großmann, N. Barsan, U. Weimar, Sensors and Actuators B: Chemical, 185, 2013, 644-650.

Impact of Pt additives on the surface reactions between SnO2, water vapour, CO and H2; an operando investigation, K. Großmann, S. Wicker, U. Weimar, N. Barsan, Phys. Chem. Chem. Phys. , 15, 2013, 19151-58.

Towards fully printed capacitive gas sensors on flexible PET substrates based on Ag interdigitated transducers with increased stability, U. Altenberend, F. Molina-Lopez, A. Oprea, D. Briand, N. Barsan, N. F. De Rooij, U. Weimar, Sensors and Actuators B: Chemical, 187, 2013, 280-287.

Flame spray pyrolysis for sensing at the nanoscale, J. Kemmler, S. Pokhrel, L. Mädler, U. Weimar, N. Barsan, Nanotechnology, 24, 2013, 1-14.

Pd@SnO2 and SnO2@Pd Core@shell Nanocomposite Sensors, F. Gyger, A. Sackmann, M. Hübner, P. Bockstaller, D. Gerthsen, Henning Lichtenberg, J. – D. Grunwaldt, N. Barsan, U. Weimar, C. Feldmann, Particle & Particle Systems Characterization, 31, 2014, 591-596.

Conduction mechanism switch for SnO2 based sensors during operation in application relevant conditions; implications for modeling of sensing, N. Barsan, J. Rebholz, U. Weimar, Sensors and Actuators B: Chemical, 207, 2015, 455–459.

Structure-function relationships of conventionally and flame made Pd-doped sensors studied by X-ray absorption spectroscopy and DC-resistance, D. Degler, H. W. Pereira de Carvalho, U. Weimar, N. Barsan, D. Pham, L. Mädler, J.-D. Grunwaldt, Sensors and Actuators B: Chemical, 219, 2015, 315-323.

Identifying the active oxygen species in SnO2 based gas sensing materials: an operando IR spectroscopy study, D. Degler, S. Wicker, U. Weimar, N. Barsan, The Journal of Physical Chemistry C, 119, 2015, 11792-1179.

Selectivity Enhancement by Using Double-Layer MOX-Based Gas Sensors Prepared by Flame Spray Pyrolysis (FSP), J. Rebholz, K. Grossmann, D. Pham, S. Pokhrel, L. Mädler, U. Weimar, N. Barsan, Sensors, 16(9), 2016.

Extending the toolbox for gas sensor research: Operando UV/vis diffuse reflectance spectroscopy on SnO2-based gas sensors, D. Degler, N. Barz, U. Dettinger, H. Peisert, T. Chassé, U. Weimar, N. Barsan, Sensors and Actuators B: Chemical, 224, 2016, 256-259.

Structure and chemistry of surface-doped Pt: SnO2 gas sensing materials, D. Degler, H. W. Pereira de Carvalho, K. Kvashnina, J.-D. Grunwaldt, U. Weimar, N. Barsan, RSC Advances, 6, 2016, 28149-155.

Smart RFID label with a printed multisensory platform for environmental monitoring, A. Vásquez Quintero, F. Molina-Lopez, E. C. P. Smits, E. Danesh, J. van den Brand, K. Persaud, A. Oprea, N. Barsan, U. Weimar, N. F. de Rooij, D. Briand, Flexible and Printed Electronics , Vol.1,Nr.2, 2016, 1-12.

Multiple Feature Extraction Approach for Gas Sensing, N. Barsan, U. Weimar, Chemical Analysis Based on Nonlinearity, S. Nakata, Nova Science Publishers, Inc., New York, 2003, 60-68.

Gas sensors based on semiconducting metal oxides, A.Gurlo, N.Barsan, U.Weimar, Metal Oxides: Chemistry and Applications, Marcel Dekker, New York, 2004.

Metal oxide based gas sensor research: how to?, N. Barsan, D. Koziej and U. Weimar, Sensors & Actuators B,, 121, 2007, 18-35.

Characterization of granular metal oxide semiconductor gas sensitive layers by using Hall effect based approaches, A. Oprea, N. Barsan and U. Weimar, Article Cluster Sensors based on interfaces, J. Camassel, P. Soukiassian (Eds.), J. Phys. D: Appl. Phys., 40, 2007, 7217-7237.

Electronic Noses: Current Status and Future Trends, F. Röck, N. Barsan and U. Weimar, Chemical Reviews Modern Topics in Chemical Sensing, J. Michl, J. Janata (Eds.), American Chemical Society, Chem. Rev., 108, 2008, 705-725.

Solid State Gas Sensor Research in Germany – a Status Report, R. Moos, K. Sahner, M. Fleischer, U. Guth, N. Barsan and U. Weimar, Sensors 9, 2009, 4323-4365, ISSN 1424-8220.

Semiconduction Metal Oxides Based Gas Sensors, K. Grossmann, U. Weimar, N. Barsan, Semiconductors and Semimetals, 88, 2013, 261-282, 978-0-12-396489-2.

The influence of humidity to a sensitive behavior of In2O3-based sensors, M. Ivanovskaya, P. Bogdanov, N. Barsan and J. Kappler, EUROSENSORS XIV Book of Abstracts, 27-30 August 2000, Copenhagen (Denmark), 2000, 85-86.

Nanocrystalline Tin Dioxide Gas Sensors to Monitor CO and NO₂: the Effect of Pt and Pd Surface Doping, N. Barsan , E. Pentia , M. Schweizer-Berberich , A. Diéguez, A.Romano-Rodriguez , U. Weimar, J. R. Morante and W. Göpel, Conf Proc 6th Int Meeting on Chemical Sensors, Gaithersburg (USA) (7/1996), 1996.

Gas identification by means of pulsed temperature operated single SnO₂ based thick film sensors, A. Heilig, N. Barsan, U. Weimar, M.Schweizer-Berberich, W. Göpel, Conf Proc Eurosensors X, Leuven (B) (9/1996), 1996, 1027-1030.

In₂O₃ Thin Film Sensors for NO₂ Detection : Influence of Geometric Effects on Sensor Properties, A. Gurlo, M. Ivanovskaya, N. Barsan, M. Schweizer-Berberich, U. Weimar and W. Göpel, Conf. Proc. Eurosensors X, Leuven (B) (9/1996), 1996, 1047-1050.

Structural Changes on SnO₂ Nanoparticles for Gas Sensor Applications induced by Calcination Treatments and Grinding, A. Dieguez, J.L. Alay, J. Kappler, A. Romano-Rodríguez, A. Vila, N. Barsan, U. Weimar, W. Göpel, J.R. Morante, MRS'97 Fall Meeting Boston, 1997.

Sensitivity and Structural Characterization of Nanometric SnO₂ For Gas Sensor Devices, J.R. Morante, A. Diéguez, A. Romano-Rodriguez, J.L. Alay, N. Barsan, M. Schweizer-Berberich, U. Weim, Conf. Proc. EUROSENSORS XI, 1997, 1401-1404, Warschau (Poland), 83-908335-0-6.

Nanocrystalline SnO₂ gas-sensors: Influence of doping on electronic structure, M. Sinner-Hettenbach, J. Kappler, N. Barsan, U. Weimar and W. Göpel, Faraday Discussions 114, Surface Science of Metal Oxides, St. Martin's College, Ambleside, UK, 1-3 S, 1999.

CO - Water Interaction with Pd-doped SnO₂ Gas Sensors: Simultaneous Monitoring of Resistances and Work Functions, N. Barsan, A. Heilig, J. Kappler, U. Weimar, and W. Göpel, Conf. Proc. EUROSENSORS XIII, 1999, 183-184, The Hague (The Netherlands), 90-76699-01-1.

High Temperature Micro- Hotplates for Drop Coated Gas Sensors, D. Briand, B. van der Schoot, N. F. de Rooij, A. Krauss, U. Weimar, N. Barsan and W. Göpel, Conf. Proc. EUROSENSORS XIII, 1999, 357-358, The Hague (The Netherlands), 90-76699-01-1.

Influence on the gas sensor performances of the metal chemical states introduced by impregnation of the nano-crystalline SnO₂, A. Dieguez, A. Vila, A.Cabot, A. Romano, J.R.Morante, N. Barsan, J. Kappler, U. Weimar, and W. Göpel, Conf. Proc. EUROSENSORS XIII, 1999, 51-52, The Hague (The Netherlands), 90-76699-01-1.

1/f and 1/f² noise spectral densities in sensors made by polymers and SnO₂, U. Weimar, M. Schweizer-Berberich, N. Barsan, A. Krauss, W. Göpel, J. Gardner, P. Bartlett, G. Sberveglieri, G. Faglia, A. Dell'Era, G. Filisofi, C. di Natale, A. Mantini, A. D'Amico, Conf. Proc. ISOEN 99, 1999, 199-202, Tübingen (Germany), 3-00-004819-7.

Tin oxide research: A hierarchical approach (Plenary Talk), N. Barsan, U. Weimar, Conf. Proc. 5th National Conference on Sensors and Microsystems, Plentary Talk, 2000, 28, Lecce.

Thick Films Sensing Layers on Micro-Machined Substrates; a Novel Concept in Gas-Sensing, N. Barsan and U. Weimar, Conf. Proc. Nanostructured Sensors and Other Gas Reactive Applications, Il Ciocco Hotel and Conference Center Castelvecchio, 2000, Italy.

Molecular Beam Deposited SnO₂-TiO₂ Thin Films for Gas Sensors, F. Edelman, H. Hahn, H. Hoche, P. Werner, A. Chack, N. Barsan and U. Weimar, Conf. Proc. Nanostrutured Sensors and Other Gas Reactive Applications, Il Ciocco Hotel and Conference Center Castelvecchio, 2000.

Micro-Hotplates for High Temperature Drop Coated Gas Sensors, A. Krauß, U. Weimar, N. Barsan, D. Briand, B. van der Schoot, and N. F. de Rooij, Conf. Proc. IMCS 2000, Basel (Switzerland) (7/2000), 2000, 519.

Measurement of catalytic combustion of hydrocarbons by tin oxide gas sensors with mass spectrometry, Wolf Schmid, Nikos Papamichail, Nicolae Barsan, and Udo Weimar, Conf. Proc. IMCS 2000, Basel (Switzerland) (7/2000), 2000, 109.

The role of Mo in the detection of NO₂ by thin-film semiconductor sensors based on In₂O₃-MoO₃, M.Ivanovskaya, A.Gurlo, N. Barsan, and U. Weimar, Conf. Proc. IMCS 2000, Basel (Switzerland) (7/2000), 2000, 113.

Long-term investigations on sensor arrays: The necessity of re-calibration, M. Frank, S. Hahn, P. Visani, N. Barsan, U. Weimar, Conf. Proc. ISOEN 2000, Brighton (UK) (7/2000), 2000, 61-62.

Application of a micro-hotplate gas sensors array to the analysis of CO/CH₄ gas mixtures by Pattern Recognition and Multicomponent analysis methods, S. Capone, P. Siciliano, L. Vasanelli, N. Barsan, U. Weimar, Conf. Proc. Eurosensors XIV Copenhagen (DK) (8/2000), 2000, 45-46.

Resonant photoemission on doped and undoped SnO₂ gas sensors, M. Sinner-Hettenbach, N. Barsan, U. Weimar, T. Weiss, C. Ziegler, H. von Schenk, Conf. Proc. Eurosensors XIV, Copenhagen (DK) (8/2000), 2000, 71-72.

Nanoscaled In₂O₃ sensors: Practical aspects of stability and reproducibility, A. Gurlo, M. Ivanovskaya, J. Kappler, N. Barsan, U. Weimar, Conf. Proc. Eurosensors XIV, Copenhagen (DK) (8/2000), 2000, 87-88.

Hierarchical Modelling of Semiconductor Gas Sensors: The Tübingen Way, U. Weimar, N. Barsan, Book of Abstracts, II. International Seminar on Semiconductor Gas Sensors, Ustron (PL) (9/2000), 2000, 38.

Combined Phenomenological Studies of SnO₂ Gas Sensors: Conductance, Work Function, AC Spectroscopy and Consumption, J. Kappler, A. Tomescu, N. Barsan, U. Weimar, Book of Abstracts, II. International Seminar on Semiconductor Gas Sensors, Ustron (PL) (9/2000), 2000, 36.

STM, LEED and Photoemission Studies of SnO₂ (110) Surface and SnO₂ Gas Sensors, M. Sinner-Hettenbach, T. Weiss, N. Barsan, U. Weimar, M. Gothelid, G. Le Lay, U. Karlsson, Book of Abstracts, II International Seminar on Semiconductor Gas Sensors, Ustron (PL) (9/2000), 2000, 37.

Thick Films Based Micro-Sensors: A Novel Concept in Gas-Sensing with Metal Oxide-Based Sensors, N. Barsan, U. Weimar, Conf. Proc. 198. Meeting of Electrochemical Society, Phoenix (USA) (10/2001), 2000, 1118, 1-56677-303-2.

Sensing of hydrocarbons with Tin Oxide Gas Sensors as revealed by simultaneous conductance and consumption measurements, W. Schmid, N. Barsan, U. Weimar, Conf. Proc. MATCHEMS, Brescia, (I), 2001, 11-12.

Consumption measurements during the sensing of hydrocarbons with tin oxide sensors, W. Schmid, N. Barsan and U. Weimar, Conf. Proc. IMCS, 2002, 309-310, Boston (USA).

CH₄ detection with SnO₂ sensors in the presence of humidity and dry-air by means of DC and AC measurement, J. Kappler, P. Siciliano,N. Barsan and U. Weimar, Conf. Proc. IMCS, 2002, 310-311, Boston (USA).

Selective hydrocarbon sensing based on SnO₂ sensor arrays, S. Hahn, N. Barsan and U. Weimar, Conf. Proc. IMCS, 2002, 379-380, Boston (USA).

DRIFT Studies of Thick Film SnO₂ Sensors: Direct Characterization and CO Detection Mechanism, S. Harbeck, A. Szatvanyi, N. Barsan, U. Weimar, V. Hoffmann, Conf. Proc. EUROSENSORS XVI and Conf.Proc. SGS 2002, Ustron and subm. to thin solid films, 2002, 243-244, Prague (Cz).

Gas sensing of lubricant oil vapours with SnO₂-based thick film sensors in real life conditions, N. Papamichail, N. Barsan, U. Weimar, Conf. Proc. EUROSENSORS XVI, 2002, 453-454, Prague (Cz).

Oxygen and water interactions at the surface of SnO₂ based sensors, S. Hahn, N. Barsan, U. Weimar, S. Ejakov, J. Visser, R. Soltis, (1)Conf. Proc. EUROSENSORS XVI, Prague (Cz) and (2) Conf. Proc. SGS 2002 9, 2002, (1)561-562, (1)Prague (Cz), (2) Ustron (Pl).

Mechanism of NO₂ Sensing on In₂O₃ Thick Film Sensors as Revealed by Simultaneous Consumption and Resistivity Measurements, A. Gurlo, N. Barsan, U. Weimar, Conf. Proc. EUROSENSORS XVI, 2002, 571-572, Prague (Cz).

NO₂ consumption in In₂O₃ layers, A. Gurlo, N. Barsan, U. Weimar, M.Ivanovskaya, International workshop on “New developments on sensors for environmental control”, 2002, 35, Lecce, Italy.

Tuning of the Gas-Sensing Properties of Self-Assembled In₂O₃ Nanoboxes Prepared by Sol Gel Techniques, A. Taurino, M. Catalano, P. Siciliano, A. Gurlo, N. Barsan, U. Weimar, M. Ivanovskaya, AISEM, 2003, Trento (Italy).

Effects of the Pd Dopant on the Surface Reactions of SnO₂ Thick Film Sensors, S. Harbeck, A. Szatvanyi, N. Barsan, U. Weimar, V. Hoffmann, 203rd Meeting of the Electrochemical Society, 2003, Paris (France).

Monitoring of oil aerosol contamination in pressurised air with SnO₂-based thick film sensors in real life conditions, N. Papamichail, N. Barsan, U. Weimar, 10th International Symposium on Olfaction and Electronic Nose, 2003, Riga (Latvia).

P-Type Response of Thick Film Sensors Based on SnO₂-Cr₂O₃ and In₂O₃-Fe₂O₃, A. Gurlo, N. Barsan, U. Weimar, E-MRS Spring Meeting, 2003, Straßburg (France).

Formation of corundum-type In₂O₃ ambient conditions, A.Gurlo, N.Barsan, U.Weimar, M.Epifani, P.Siciliano, M.Ivanovskaya, D.Kotsikau, 9th European Conference on Solid State Chemistry, 2003, Poster 187, Stuttgart (Germany).

Anomalous behaviour of a-Fe₂O₃-based thick film sensors studied by conductance and work function change measurements, A.Gurlo, M.Sahm, A.Oprea, N.Barsan, U.Weimar, Eurosensors XVII European Conference on Solid-State Transducers, 2003, 70-71, Guimaraes (Portugal).

Sensing of hydrocarbons in low oxygen conditions with tin oxide sensors: possible conversion paths, W. Schmid, N. Barsan, U. Weimar, Eurosensors XVII European Conference on Solid-State Transducers, 2003, 663-664, Guimares (Portugal).

n-typ Metalloxidsensoren werden zu p-typ Halbleitern: Liegt es an Adsorptionsvorgängen oder ist es die elektronische Struktur? Messung und Interpretation, M.Sahm, N.Barsan, A.Gurlo, A.Oprea, U.Weimar, 6.Dresdner Sensor Symposium, 2003, 19-22, Dresden (Germany).

Organic non-conducting materials as sensitive layers for field effect gas sensing, M. Harbeck, S. Riegelsberger, A. Oprea, N. Barsan, U. Weimar, 6.Dresdner Sensor Symposium, 2003, 153-156, Dresden (Germany).

IST Projekt 2000-28452: ADA – A distributed sensor network, P. Reichel, N. Barsan, C. Ramirez, L. Giacomello, A. Pede, A. Hierlemann, U. Weimar, 6.Dresdner Sensor Symposium, 2003, 269-272, Dresden (Germany).

Properties of indium oxide semiconducting sensors deposited by different techniques, N.Barsan, A.Gurlo, M.Sahm, U.Weimar, Partec 2004, 2004, Nürnberg (Germany).

Gas Sensing: Basic Understanding and Devices, U. Weimar, N. Barsan, A. Oprea, The 10th International Meeting on Chemical Sensors, 2004, 6-9, Tsukuba, Japan.

p-type response of SnO₂-Cr₂O₃ mixed oxide sensors: measurements and interpretation, A.Gurlo, N.Barsan, U.Weimar, The 10th International Meeting on Chemical Sensors, 2004, Tsukuba (Japan).

Simultaneous work function and conductance measurements on SnO₂ prepared from hydrothermally treated sols, A.Gurlo, T.Sahm, N.Barsan, A.Oprea, U.Weimar, N.Yamazoe, G.Sakai, K.Shimanoe, The 10th International Meeting on Chemical Sensors, 2004, 160-161, Tsukuba (Japan).

Complementary phenomenological and spectroscopic studies of propane sensing with tin dioxide based sensors, D. Koziej, N. Barsan, V. Hoffmann, J. Szuber and U. Weimar, The 10th International Meeting on Chemical Sensors, 2004, 166-167, Tsukuba, Japan.

Catalysts and gas sensors based on metal oxides: common points and difference; what one can learn about the mechanisms of surface reactions from in-situ electrical and spectroscopic techniques, A.Gurlo, N.Barsan, U.Weimar, 13th International Congress on Catalysis, 2004, 77, Paris, France.

Catalysts and Gas Sensors Based on Metal Oxides: what one can learn about the mechanisms of surface reactions from in-situ electrical and spectroscopic techniques, A. Gurlo, N. Barsan, U. Weimar, ISOSCAT, “In situ and Operando Spectrosopy for Catalysts”, 2004, 8, Caen, France.

Flame made nanoparticles for gas sensors, L.Mädler, S.E.Pratsinis, T.Sahm, A.Gurlo, N.Barsan, U.Weimar, DECHEMA Jahrestagung 2004, pI-6,, 2004, and NSTI Nanotechnology Conf. and Trade Show , NSTI Nanotech 2005 Technical Proceedings, p.258-261.

Fundamental studies on SnO₂ by means of simultaneous work function change and conductance measurements, Th. Sahm, A. Gurlo, N. Barsan, U. Weimar, IV International Workshop on Semiconductor Gas Sensors, SGS’04, 2004, 36, Ustron, Poland.

Tin Dioxide Gas Sensing: Simultaneous Optical and Electrical Studies, D. Koziej, N. Barsan, V. Hoffmann, J. Szuber and U. Weimar, International Workshop on Semiconductor Gas Sensors, SGS’04, 2004, 31, Ustron, Poland.

Impedance Spectroscopy during The Sensing of CO With Tin Dioxide Gas Sensors, O. Sachlara, N. Barsan and U. Weimar, IV International Workshop on Semiconductor Gas Sensors, SGS’04, 2004, 49, Ustron, Poland.

Influence of different gas atmospheres on the mobility and the charge carrier concentration of SnO₂ thin films, E. Moretton, J. Wöllenstein, A. Oprea, N. Barsan, U.Weimar, Technical Digest of Eurosensors XVIII, 2004, 193-194, Rome, Italy.

Ammonia Detection Mechanism with Polyacrylic Acid Sensitive Layers: Field Effect Transduction, Technical Digest of Eurosensors XVIII, 2004, Rome, Italy p652-653, A. Oprea, N. Barsan, U. Weimar, and Sensors and Actuators B, 111-112, 2005, 577-581.

Flame spray synthesis of tin dioxide nanoparticles for gas sensing, T. Sahm, L. Mädler, A.Gurlo, N. Barsan, S.E. Pratsinis and U. Weimar, Mater. Res. Soc. Sympo. Proc., 828, 2004, p19-24.

Flame made nanoparticles for gas sensors, The Nanotechnology Conference and Trade Show, 2005, Anaheim, California, USA, L. Mädler, S.E. Pratsinis, T. Sahm, A. Gurlo, N. Barsan and U. Weimar, Technical Proc., 2005, p258-261.

Basics of oxygen and SnO₂ interaction; work function change and conductivity measurements, T. Sahm, A. Gurlo, N. Barsan and U. Weimar, Eurosensors XIX, 2005, Barcelona, Spain.

High performance porous metal oxide sensors via single-step fabrication, T. Sahm, L. Mädler, A. Gurlo, N. Barsan, U. Weimar, A. Roessler and S.E. Pratsinis, Eurosensors XIX, 2005, Barcelona, Spain.

Empfindliche Prozesse bei dünnen Polyacrylsäure-Schichten unter Ammoniak-Atmosphäre durch Impedanzspektroskopie aufgedeckt, M. Sahm, A. Oprea, N. Barsan and U. Weimar, 7. Dresdner Sensor-Symposium, Dresdner Beiträge zur Sensorik, Band 24, TUDpress,, 2005, 267-270, Dresden.

Spectroscopic insights into CO sensing of undoped and palladium doped tin dioxide sensors derived from hydrothermally treated tin oxide sol, D. Koziej, N. Barsan, K. Shimanoe, N. Yamazoe, J. Szuber,and U. Weimar, Eurosensors XIX, 2005, Barcelona, Spain.

Studies of tin dioxide based sensors' cross sensitivity to CO and water vapor - the role of the chemical and morphological stage of the surface", D. Koziej, N. Barsan, K. Shimanoe, N. Yamazoe, J. Szuber, U. Weimar, ECI - Nanostructured Materials: Environmental, Energy and Sensing Application, 2005, Barga, Italy.

Direct formation of highly porous gas-sensing films by in-situ thermophoretic deposition of flame-made Pt/SnO₂ nanoparticles, L. Maedler, A. Roessler, S.E. Pratsinis, T. Sahm, A. Gurlo, N. Barsan, U. Weimar, AiChE Annual Meeting, Conf. Proc., 2005, Cincinnati, USA.

Formation of highly porous gas-sensing films by in-situ thermophoretic deposition of nanoparticles from aerosol phase, T. Sahm, W. Rong, N. Barsan, L. Mädler, S.K. Friedlander and U. Weimar, Mat. Res. Soc. Symp. Proc., 915, 2006, R07-03, San Francisco, USA.

Influence of annealing temperature on the CO sensing mechanism for tin dioxide based sensors – operando studies, D. Koziej, K. Thomas, N. Barsan, F. Thibault–Starzyk and U. Weimar, Operando – II Second International Congress on Operando Spectroscopy, 2006, 144-145, Toledo, Spain.

Interdependence of Ammonia and Water Sorption in Polyacrylic Acid Layers, M. Sahm, A. Oprea, N. Barsan and U. Weimar, The 11th International Meeting on Chemical Sensors, 2006, Brescia, Italy.

Investigation of in-situ Fabricated Multilayer Sensors for Gas Sensing Applications, T. Sahm, W. Rong, N. Barsan, L. Mädler and U. Weimar, Eurosensors XX, 2006, 222-223, Goeteborg, Sweden, ISBN 978-91-631-9280.

Water and Ammonia Influence on the Conduction Mechanisms in Polyacrylic Acid Films, M. Sahm, A. Oprea, N. Barsan and U. Weimar, Eurosensors XX, 2006, 358-359, Goeteborg, Sweden, ISBN 978-91-631-9280.

Influence of the Nature of the Electrode on the Sensing Performance of SnO₂ Sensors; Impedance Spectroscopy Studies, J. Bertrand, D. Koziej, N. Barsan, J.P Viricelle, C. Pijolat and U. Weimar, Eurosensors XX, 2006, 100-101, Goeteborg, Sweden, ISBN 978-91-631-9280.

Capacitive Humidity Sensors on Flexible RFID Labels, A. Oprea, N. Barsan, U. Weimar, M.-L. Bauersfeld, D. Ebling and J. Wöllenstein, Eurosensors XXI,10-14 June 2007, 2007, 2039-2042, Lyon, France.

Increase of the Selectivity of Sensor Arrays through Consumption Effects of Metal Oxide Sensors”, F. Röck, N. Barsan and U. Weimar, Eurosensors XXI, 10-14 June, 2007, 2019-2022, Lyon, France.

Flame spray pyrolysis-based nano-structured functional metal oxide layers for gas sensing applications, N. Barsan, L. Maedler, U. Weimar, SPIE Optics East, 9–12 September, Proc. of SPIE Vol. 6769, 676903-1 to 11, (2007) doi: 10.1117/12.731110, 2007, Seaport World Trade Center, Boston, Massachusetts USA.

Hunting the active species in gas sensing processes: operando studies on tin dioxide-based sensors, D. Koziej, N. Barsan, U. Weimar, Invited Talk, SPIE Optics East, 9–12 September 2007, Proc. of SPIE Vol. 6769, 676906-1 to 10, (2007) doi: 10.1117/12.731222, 2007, Seaport World Trade Center, Boston, Massachusetts USA.

Kapazitiver Feuchtesensor auf flexiblem Substrat, M.-L Bauersfeld, A. Oprea, N. Barsan, S. Rademacher, C. Matheis, U. Weimar and J. Wöllenstein, Mikrosystemtechnik Kongress 2007, 15-17 October, VDE-Verlag, 2007, 577-580, Dresden (Germany), ISBN 3-8007-3061-8.

CO Sensing with Tin Oxide Sensors; Effect of Fabrication Technology and Operation Conditions as Revealed by DRIFTS and Conductance Measurements, D. Koziej, N. Barsan and U. Weimar, EACCS The 7th East Asian Conference on Chemical Sensors, 3-5 December, 2007, 79-80, Singapore.

Opportunities and limitations in using combined electrical methods to characterise metal oxide semiconductors for gas sensing application: how and to which extent can be exploited the input from, investtigations performed in operando conditions towards pertinent information, A. Oprea, N. Barsan, U. Weimar, Conf. Proc. ASEVA Workshop, July 7-9, 2008, Salamanca, Spain.

Transport and Gas Sensing Properties of In₂O₃ Nanocrystalline Thick Films: A Hall Effect-based Approach, A. Oprea, A. Gurlo, N. Barsan, U. Weimar, Conf. Proc. 12th IMCS Conference July 13 - 16, 2008, Columbus, Ohio, USA.

Possible Effect of Grain Morphology on NO₂ Sensing with WO₃ nanomaterials, C.E. Simion, S. Pokhrel, A. Tomescu, N. Barsan, U. Weimar, Conf. Proc. 12th IMCS Conference July 13 - 16, 2008, Columbus, Ohio, USA.

Capacitive Gas Sensor Arrays on Plastic Substrates for Low Power and Mobile Applications, A. Oprea, U. Altenberend, J. Courbat, D. Briand, N. Barsan, U. Weimar, N.F. de Rooij, Conf. Proc. Eurosensors XXII, Sept. 7-10, 2008, 507, Dresden.

Morphology Influence upon the CO Sensitivity for WO₃ Based Gas Sensors – Impedance Spectroscopy Investigations, C.E. Simion, N. Barsan, S. Pokhrel, A. Tomescu, U. Weimar, Conf. Proc. Eurosensors XXII, Sept. 07-10, 2008, 372, Dresden.

Metal Oxide Gas Sensor Arrays: Geometrical Design and Selectivity, F. Röck, N. Barsan and U. Weimar, 13th International Symposium of Olfaction and Electronic Nose (ISOEN), April 15-17, 2009, Brescia, Italy.

Evaluation of Time-Resolved Sensor Measurements: Comparison of Different Unsupervised Models for Quantification Tasks, T. Heine, F. Röck, N. Barsan and U. Weimar, 13th International Symposium of Olfaction and Electronic Nose (ISOEN), April 15-17, 2009, Brescia, Italy.

CO₂ sensing with chemoresistive Nd₂O₂CO₃ sensors – Operando insights, A. Haensch, I. Djerjb, M. Niederberger, N. Barsan, U. Weimar, Eurosensors XXII, September 6-9, 2009, Lausanne, Switzerland.

Influence of Material Properties on Hydrogen Sensing for SnO₂ Nanomaterials, M. Hübner, R. Pavelko, J. Kemmler, N. Barsan, U. Weimar, Eurosensors XXII, September 6-9, 2009, Lausanne, Switzerland.

Multi Sensor Platform on Plastic Foil for Environmental Monitoring, J. Courbat, D. Briand, A. Oprea, N. Barsan, U. Weimar, N.F. de Rooij, Eurosensors XXII, September 6-9, 2009, Lausanne, Switzerland.

Clean and resource efficient buildings for real life, U. Weimar, F. Röck and N. Barsan, Conf. Proc. IMCS-13, 11-14 July, 2010, Perth, Australia.

H₂/CO Sensing in Fuel-Cell (Oxygen-Free) Conditions: Microporous Ceramic Coarting to Protect SnO₂ against Reduction, R.M. Prasad, R. Riedel, M. Hübner, N. Barsan, U. Weimar and A. Gurlo, Conf. Proc. IMCS-13, 11-14 July , 2010, Perth, Australia.

Microporous ceramic membranes for H₂ / CO separation and sensing, R. M. Prasad, A. Gurlo, R. Riedel, M. Huebner, N. Barsan, U. Weimar, Conf. Proc. SGS 2008, 14-19 Sept. , 2008, Zakopane, Poland.

Operando fluorescent X-ray spectroscopy studies on the role of noble metal sensitizers in tin dioxide based gas sensors, D. Koziej, M. Hübner, N. Barsan, U. Weimar, J.D. Grunwaldt, Third international Congress on Operando Spectroscopy, 2009, Rostock-Warnemünde.

Influence of background gases on gas sensing with semiconducting metal oxide based sensors, N. Barsan, M. Huebner, U. Weimar, ACCS, 2009, Daegu, Korea.

Formaldehyde Sensors Based on Flame Spray Pyrolysis Sn Doped In₂O₃ (ITO) Materials, N. Barsan, J. Kemmler, S. Pokhrel, L. Maedler, U. Weimar, 3rd International Congress on Ceramics, 14-18 November, 2010, Osaka, Japan.

Operando DRIFT Measurements on a Tin Dioxide Based Gas Sensor, K. Großmann, N. Barsan, U. Weimar, Conf. Proc. Eurosensors XXIV, September 5-8, 2010, Linz, Austria.

Rare Earth Oxycarbonates As a Material Class for Chemoresistive CO₂ Gas Sensors, A. Haensch, D. Koziej, M. Niederberger, N. Barsan, U. Weimar, Conf. Proc. Eurosensors XXIV, September 5-8, 2010, Linz, Austria.

BaTi_0,95Rh_0,05O₃ catalytic filter – a promising candidate for the selective detection of CO in the presence of H₂, M. Hübner, A. Yuece, M. Mondragón Rodriguez, B. Saruhan, N. Barsan, U. Weimar, Conf. Proc. Eurosensors XXIV, September 5-8, 2010, Linz, Austria.

Shining the x-rays on the Pt:SnO₂ based gas sensors in operando conditions, D. Koziej, M. Hübner, M. Bauer, N. Barsan, K. Kvashnina, M. D. Rossell, U. Weimar, J. Grunwaldt, MRS Fall Meeting, Symposium TT, Paper Number 915776, 201, December, 2010, Boston, USA.

Conduction mechanism investigations by using work function changes measurements, N. Barsan and U. Weimar, AISEM, February 7-9, 2011, Rome, Italy.

FSP Generated Materials and their Applications, J. Kemmler, S. Pokhrel, N. Barsan and U. Weimar, ANAKON, March 22-25, 2011, Zurich, Switzerland.

Metallphthalocyanine und deren Anwendung in der Gassensorik, D. Degler, W. Simmendinger, N. Barsan and U. Weimar, ANAKON, March 22-25, 2011, Zurich, Switzerland.

Chemoresisitive CO₂-Sensoren auf Basis von Seltenerdoxycarbonaten im Automobil, A. Haensch, D. Koziej, M. Niederberger, N. Barsan and U. Weimar, Sensoren im Automobil, April 5-6, Thomas Tille, expert verlag, 119, 2011, 218-235, Munich, Germany, 978-3-8169-3066-2.

Characterization of Membranes for Hydrogen Purification Applying a Membrane/Gas-Sensor Combination, R. M. Prasad, M. Hübner, O. M. Conanec, A. Gurlo, R. Riedel, N. Barsan, U. Weimar, MRS Springmeeting, April 25-29, 2011, San Francisco, USA.

Evaluation of flexible substrates from commercially available plastic foils for capacitive gas sensors, U. Altenberend, F. Molina-Lopez, D. Briand, A. Oprea, N. Barsan, U. Weimar, N. F. De Rooij, International Symposium on Flexible Organic Electronics (ISFOE-11), 2011, Thessaloniki.

Faster response times of rare-earth oxycarbonate based CO₂ sensors and another readout strategy for real-world applications, A. Haensch, D. Borowski, N. Barsan, D. Koziej, M. Niederberger, U. Weimar, Conf. Proc., Eurosensors XXV, September 4-7, 2011, Athens.

The influence of Pt Doping on the Sensing and Conduction Mechanism of SnO ₂ Based Thick Film Sensors, M. Hübner, S. Hafner, N. Barsan, U. Weimar, Conf. Proc. Eurosensors XXV,September 4-7, 2011, Athens, Greece.

Transduction in semiconducting metal oxide based gas sensors - implications of the conduction mechanism, N. Barsan, Eurosensors XXV, September 4-7, 2011, Athens, Greece.

Determining the state of Pt in SnO₂ based sensors under working conditions, M. Hübner, D. Koziej, M. Bauer, N. Barsan, K. Kvashnina, M. D. Rosell, U. Weimar, J.-D. Grunwaldt, Spotlight on Science, ESRF Homepage, 2011.

Metastable In₄SN₃O₁₂ in Sensor Application, J. Kemmler, S. Pohkrel, L. M?dler, N. Barsan, U. Weimar, 10. Dresdner Sensor-Symposium, 5-7 December , 2011, 241-244, Dresden.

Untersuchung der Schichtdickenänderung dicker Polymerschichten geeignet für kapazitive Gassensoren, U. Altenberend, A. Oprea, N. Barsan, U. Weimar, 10. Dresdner Sensor-Symposium, 5-7 December, G. Gerlach, A. Schütze, TUDpress, 43, 2011, 249-252, Dresden.

Operando Untersuchungen der gas-sensorischen Eigenschaften von Metallphtalocyaninen durch kombinierte elektrische, optische und gravimetrische Messungen, W. Simmendinger, A. Oprea, N. Barsan, U. Weimar, 10. Dresdner Sensor-Symposium, 5-7 December, G. Gerlach, A. Schütze, TUDpress, 43, 2011, 131-132, Dresden.

Perspektiven der Transduceroptimierung – Einfluss des Elekrodenmaterials bei verschiedenen Temperaturen auf SnO2 Dickschicht Sensoren, S. Rank, G. Gadacz, N. Barsan, U. Weimar, 10. Dresdner Sensor-Symposium, 5-7 December, G. Gerlach, A. Schütze, TUDpress, 42, 2011, 253-256, Dresden.

FSP synthesized In₄ Sn₃ O₁₂ , a novel gas sensing material, J. Kemmler, S. Pokhrel, L. Mädler, N. Barsan, U. Weimar, 36th International Conference & Exposition on Advanced Ceramics and Composites, 22-27 January, 2012, Daytona Beach, USA, ICACC-GYIF-004-2012.

Determining the state of Pt in SnO₂ -based gas sensors under working conditions, M. Hübner, D. Koziej, M. Bauer, N. Barsan, U. Weimar and J.-D. Grunwaldt, ESRF User Meeting 2012,7-8 February , Invited Speaker: Michael Hübner, 2012, Grenoble, France.

Influence of Pd and Pt doping concerning the sensing mechanism, K. Grossmann, J. Rebholz, R. Pavelko, N. Barsan, U. Weimar, IMCS 2012 - The 14th International Meeting on Chemical Sensors, 20-23 May, 2012, Nuremberg.

Inkjet Printed Capacitive Transducers on Flexible Plastic Substrates with Increase Stability: Ag on PET, U. Altenberend, F. Molina-Lopez, D. Briand, A. Oprea, N. Barsan, N. F. De Rooij, U. Weimar, IMCS 2012 - The 14th International Meeting on Chemical Sensors,20-23 May, 2012, Nuremberg.

Conduction Mechanism in Undoped and Antimony Doped SnO₂ Based FSP Gas Sensors, J. Rebholz, C. Jaeschke, M. Hübner, D. Pham, L. Mädler, N. Barsan, U. Weimar, IMCS 2012 - The 14th International Meeting on Chemical Sensors,20-23 May, 2012, Nuremberg.

Influence of Oxygen Impurities on the CO/H₂ Selectivity of GaN Based Gas Sensors, R. M. Prasad, A. Gurlo, R. Riedel, O. Merdrignac-Conanec, M. Hübner, N. Barsan, U. Weimar, IMCS 2012 - The 14th International Meeting on Chemical Sensors, 20-23 May, 2012, Nuremberg.

The Impact of the Nature of the Electrode Material on SnO₂ Thick Film Sensor Performance: Influence on Oxygen Adsorption, S. Rank, S. Hafner, N. Barsan, U. Weimar, Eurosensors XXVI, 9-12 September, 2012, Kraków, Poland.

Position effect of Pd additives on the detection of reducing gases for nanoscale SnO₂ hollow sphere based gas sensors, A. Sackmann, F. Gyger, M. Hübner, P. Bockstaller, D.Gerthsen, C. Feldmann, N. Barsan, U. Weimar, Eurosensors XXVI, 9-12 September, 2012, Kraków, Poland.

Operando-spectroscopic Study on the Structure Function Relationship of Pd-doped SnO2 Gas Sensors, H. W. P. de Carvalho, J.-D. Grunwaldt, D. Degler, J. Rebholz, U. Weimar, N. Barsan, D. K. Pham,L. Mädler, 12th Bunsentagung (Annual German Conference on Physical Chemistry), May, 9-1, 2013, Karlsruhe Institute of Technology (KIT).

Oxygen impact on CO sensing mechanism of Co3O4 based sensors: an operando (DRIFTS) investigation, S. Wicker, N. Barsan, U. Weimar, ACCS 2013, 11-14 November, 2013, Chiang Mai, Thailand.

Systematische Untersuchung der gassensorischen und katalytischen Eigenschaften von Co3O4, S. Wicker, K. Grossmann, N. Barsan, U. Weimar, 11. Dresdner Sensor-Symposium, 9-11 December, Conf. Proc, 2013, Dresden.

Laminiertes Zinndioxid - restrukturierte FSP Schichten für Sensoranwendungen, J. Kemmler, S. Schopf, L. Mädler, N. Barsan, U. Weimar, 11. Dresdner Sensor-Symposium, 2013, 355-359, Dresden.

Neue Einblicke in die Struktur palladiumdotierter SnO2 Gassensoren mittels Röntgenabsorptionsspektroskopie, D. Degler, H. W. Pereira de Carvalho, J.-D. Grunwaldt, U. Weimar, N. Barsan, 11. Dresdner Sensor-Symposium,9-11 December, , 2013, Dresden.

In-situ and operando X-ray spectroscopy – a suitable tool to reveal the structure of noble metal doped sensing materials, D. Degler, H. W. Pereira de Carvalho, J. –D. Grunwaldt, U. Weimar, N. Barsan, IMCS 2014 – The 15th International Meeting on Chemical Sensors, 16-19 March, 2014, Buenos Aires, Brasil.

Influence of Conduction Mechanism Changes on the Sensor Performance of SMOX Based Gas Sensors, J. Rebholz, N. Barsan, U. Weimar, Conf. Proc., Eurosensors XXVIII,7-10 September, 2014, Brescia, Italy.

New process technologies for the deposition of semiconducting metal oxide nanoparticles for sensing, J. Kemmler, S. Schopf, L. Mädler, N. Barsan, U. Weimar, Conf. Proc., Eurosensors XXVIII,7-10 September, 2014, Brescia, Italy.

Impact of doping/decoration on gas sensing with metal oxide nanoparticles, J. Rebholz, U. Weimar, N. Barsan, nanoFIS 2014,03-05 December, 2014, Graz, Austria.

Identification of the reactive oxygen species on SnO2 by using operando spectroscopy, D. Degler, S. Wicker, U. Weimar, N. Barsan, 4th GOSPEL Workshop GSSMO 2015,07-09 June, 2015, Tübingen, Germany.

Impact of the doping method of commercial SnO2 on gas sensor response, humidity dependence and sensing mechanism, S. Wicker, T. Oberle, U. Weimar, N. Barsan, 4th GOSPEL Workshop GSSMO 2015,07-09 June , 2015, Tübingen.

Operando X-ray absorption spectroscopy: A key technique to understand the structure-function-relationship of noble metal doped gas sensing materials, D. Degler, H. W. Pereira de Carvalho, J.-D. Grunwaldt, U. Weimar, N. Barsan, 16th International Conference on X-ray Absorption Fine Structure;23-28 August, 2015, Karlsruhe, Germany.

A self-doping surface effect and its influence on the sensor performance of undoped SnO2 based gas sensors, J. Rebholz, C. Dee, U. Weimar, N. Barsan, Eurosensors XXVIV,06-09 September, 2015, Freiburg, Germany.

Influence of Co-, Ni-, and Pd-doping on the sensing and catalytic properties of SnO2, S. Wicker, U. Weimar, N. Barsan, ACCS 2015 – the 11th Asian Conference on Chemical Sensors;16-18 November, 2015, Penang, Malaysia.

Eine systematische Untersuchung von der Wechselwirkung zwischen Wolframtrioxid Gassensoren und Luftfeuchtigkeit, A. Staerz, M. Epifani, S. Wicker, N. Barsan, U. Weimar, 12. Dresdner Sensor-Symposium, 2015, Dresden, Germany.

Fundamentals and Practical Applications to Design Nanoscaled SnO2 Gas Sensors, W. Göpel, N. Barsan, and M. Schweizer-Berberich, International Seminar on Semiconductor Gas Sensors, September 22-25, 1998, Ustron, Poland.

Modelling Gas Sensors for CO and NO2 Detection: Comparative Studies of two Prototype Transducers Based on Semiconducting (SnO2 based) and Electrochemical (Pt and Au based) Sensors, N. Barsan, NEXUSPAN Course on New Materials and Transducers for Chemical Sensors, October 10, 1998, Sinaia, Rom, 1998.

Operational use of 'electronic noses' in demining activities and orientating measurements in explosives detection, S. Strathmann, N. Barsan, Information Society Technologies Programme, Workprogramme 2000 Preparation Consultation Meeting, 22, 1999.

Combined Techniques for Studying Metal Oxide Gas Sensors in Working Conditions: why and how, N. Barsan, tutorial lecture at 5th Italian National Conference (extended to Mediterranean countries) Sensors an, 2000.

State-of-the-Art of Gas Sensors - MOX sensors as a working example, J. Kappler, N. Barsan and U. Weimar, 2nd Workshop Sensors Springtime in Odessa, 15-16 October, 1999, Odessa, Ukraine.

In situ DRIFT Studies on Adsorption Phenomena on SnO₂, S. Emiroglu, Nicolae Barsan, U. Weimar and V. Hoffmann, Book of Abstracts, II International Seminar on Semiconductor Gas Sensors, Ustron, Poland, September, 35, 2000.