Search Results - "Jürgen Wöllenstein"

On the Influence of Humidity on a Thermal Conductivity Sensor for the Detection of Hydrogen by Emperhoff, Sophie, Eberl, Matthias, Dwertmann, Tim, Wöllenstein, Jürgen

“…Thermal conductivity sensors face an omnipresent cross-influence through varying humidity levels in real-life applications. We present the results of…”
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A Wireless Gas Sensor Network to Monitor Indoor Environmental Quality in Schools by Ortiz Perez, Alvaro, Bierer, Benedikt, Scholz, Louisa, Wöllenstein, Jürgen, Palzer, Stefan

“…Schools are amongst the most densely occupied indoor areas and at the same time children and young adults are the most vulnerable group with respect to adverse…”
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Co3O4-Based Materials as Potential Catalysts for Methane Detection in Catalytic Gas Sensors by Yurchenko, Olena, Diehle, Patrick, Altmann, Frank, Schmitt, Katrin, Wöllenstein, Jürgen

“…The present work deals with the development of Co3O4-based catalysts for potential application in catalytic gas sensors for methane (CH4) detection. Among the…”
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Rapid Quantitative Analysis of IR Absorption Spectra for Trace Gas Detection by Artificial Neural Networks Trained with Synthetic Data by Goldschmidt, Jens, Nitzsche, Leonard, Wolf, Sebastian, Lambrecht, Armin, Wöllenstein, Jürgen

“…Infrared absorption spectroscopy is a widely used tool to quantify and monitor compositions of gases. The concentration information is often retrieved by…”
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Towards a Miniaturized Photoacoustic Sensor for Transcutaneous CO2 Monitoring by El-Safoury, Mahmoud, Weber, Christian, Yassine, Hassan, Wöllenstein, Jürgen, Schmitt, Katrin

“…A photoacoustic sensor system (PAS) intended for carbon dioxide (CO2) blood gas detection is presented. The development focuses on a photoacoustic (PA) sensor…”
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Printed sensor labels for colorimetric detection of ammonia, formaldehyde and hydrogen sulfide from the ambient air by Engel, Laura, Benito-Altamirano, Ismael, Tarantik, Karina R., Pannek, Carolin, Dold, Martin, Prades, J. Daniel, Wöllenstein, Jürgen

“…•Development of sensor labels for colorimetric detection of ammonia, hydrogen sulfide and formaldehyde from the ambient air.•Integration of the gas sensitive…”
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Detection of SO2F2 Using a Photoacoustic Two-Chamber Approach by Yassine, Hassan, Weber, Christian, Eberhardt, Andre, El-Safoury, Mahmoud, Wöllenstein, Jürgen, Schmitt, Katrin

“…The wide use of sulfuryl difluoride (SO2F2) for termite control in buildings, warehouses and shipping containers requires the implementation of suitable…”
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Homogeneity Measurements of Li-Ion Battery Cathodes Using Laser-Induced Breakdown Spectroscopy by Kappeler, Moritz, Basler, Carl, Brandenburg, Albrecht, Carl, Daniel, Wöllenstein, Jürgen

“…We study the capability of nanosecond laser-induced breakdown spectroscopy (ns-LIBS) for depth-resolved concentration measurements of Li-Ion battery cathodes…”
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Cavity-Enhanced Raman Spectroscopy for Food Chain Management by Sandfort, Vincenz, Goldschmidt, Jens, Wöllenstein, Jürgen, Palzer, Stefan

“…Comprehensive food chain management requires the monitoring of many parameters including temperature, humidity, and multiple gases. The latter is highly…”
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A Portable Laser Spectroscopic System for Measuring Nitrous Oxide Emissions on Fertilized Cropland by Stiefvater, Gerrit, Hespos, Yvonne, Wiedenmann, Dominic, Lambrecht, Armin, Brunner, Raimund, Wöllenstein, Jürgen

“…Nitrous oxide (laughing gas, N O) is a relevant greenhouse gas. Agriculture contributes significantly to its emissions. As nitrogen fertilization has been…”
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Monitoring the Wobbe Index of Natural Gas Using Fiber-Enhanced Raman Spectroscopy by Sandfort, Vincenz, Trabold, Barbara M, Abdolvand, Amir, Bolwien, Carsten, Russell, Philip St. J, Wöllenstein, Jürgen, Palzer, Stefan

“…The fast and reliable analysis of the natural gas composition requires the simultaneous quantification of numerous gaseous components. To this end,…”
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Differential thermal analysis techniques as a tool for preliminary examination of catalyst for combustion by Yurchenko, Olena, Pernau, Hans-Fridtjof, Engel, Laura, Wöllenstein, Jürgen

“…The need for more economical catalysts for various combustion reactions is continuously driving catalyst development. We present Differential Thermal Analysis…”
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Towards a Miniaturized Photoacoustic Detector for the Infrared Spectroscopic Analysis of SO2F2 and Refrigerants by Yassine, Hassan, Weber, Christian, Brugger, Nicolas, Wöllenstein, Jürgen, Schmitt, Katrin

“…Sulfuryl fluoride (SO2F2) is a toxic and potent greenhouse gas that is currently widely used as a fumigant insecticide in houses, food, and shipping…”
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Photo-Induced Room-Temperature Gas Sensing with a-IGZO Based Thin-Film Transistors Fabricated on Flexible Plastic Foil by Knobelspies, Stefan, Bierer, Benedikt, Daus, Alwin, Takabayashi, Alain, Salvatore, Giovanni Antonio, Cantarella, Giuseppe, Ortiz Perez, Alvaro, Wöllenstein, Jürgen, Palzer, Stefan, Tröster, Gerhard

“…We present a gas sensitive thin-film transistor (TFT) based on an amorphous Indium-Gallium-Zinc-Oxide (a-IGZO) semiconductor as the sensing layer, which is…”
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Resonant Photoacoustic Spectroscopy of NO₂ with a UV-LED Based Sensor by Kapp, Johannes, Weber, Christian, Schmitt, Katrin, Pernau, Hans-Fridtjof, Wöllenstein, Jürgen

“…Nitrogen dioxide (NO 2 ) is a poisonous trace gas that requires monitoring in urban areas. Accurate measurement in sub-ppm concentrations represents a wide…”
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On-Board Monitoring of SO2 Ship Emissions Using Resonant Photoacoustic Gas Detection in the UV Range by El-Safoury, Mahmoud, Dufner, Miguel, Weber, Christian, Schmitt, Katrin, Pernau, Hans-Fridtjof, Willing, Bert, Wöllenstein, Jürgen

“…A photoacoustic gas detector for SO2 was developed for ship exhaust gas emission monitoring. The basic measurement setup is based on the absorption of…”
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Anodically Bonded Photoacoustic Transducer: An Approach towards Wafer-Level Optical Gas Sensors by Gassner, Simon, Schaller, Rainer, Eberl, Matthias, von Koblinski, Carsten, Essing, Simon, Ghaderi, Mohammadamir, Schmitt, Katrin, Wöllenstein, Jürgen

“…We present a concept for a wafer-level manufactured photoacoustic transducer, suitable to be used in consumer-grade gas sensors. The transducer consists of an…”
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Screen-Printed Sensors for Colorimetric Detection of Hydrogen Sulfide in Ambient Air by Engel, Laura, Tarantik, Karina R, Pannek, Carolin, Wöllenstein, Jürgen

“…A fast and sensitive method to monitor hydrogen sulfide (H₂S) in ambient air based on a visible color change of a printed disposable sensor has been developed…”
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Towards Enhanced Gas Sensor Performance with Fluoropolymer Membranes by Graunke, Thorsten, Schmitt, Katrin, Raible, Stefan, Wöllenstein, Jürgen

“…In this paper we report on how to increase the selectivity of gas sensors by using fluoropolymer membranes. The mass transport of polar and non-polar gases…”
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Investigation of Gasochromic Rhodium Complexes Towards Their Reactivity to CO and Integration into an Optical Gas Sensor for Fire Gas Detection by Pannek, Carolin, Tarantik, Karina R, Schmitt, Katrin, Wöllenstein, Jürgen

“…The detection of the toxic gas carbon monoxide (CO) in the low ppm range is required in different applications. We present a study of the reactivity of…”
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