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Title: Novel approaches towards highly selective self-powered gas sensors
Author: Hoffmann, Martin W. G.
Casals Guillén, Olga
Mayrhofer, Leonhard
Fàbrega i Claveria, Ma. Carme
Caccamo, Lorenzo
Hernández Ramírez, Francisco
Lilienkamp, Gerhard
Daum, Winfried
Moseler, Michael
Shen, Hao
Waag, Andreas
Prades García, Juan Daniel
Keywords: Detectors de gasos
Gas detectors
Issue Date: 11-Sep-2015
Publisher: Elsevier
Abstract: The prevailing design approaches of semiconductor gas sensors struggle to overcome most of their current limitations such as poor selectivity, and high power consumption. Herein, a new sensing concept based on devices that are capable of detecting gases without the need of any external power sources required to activate interaction of gases with sensor or to generate the sensor read out signal. Based on the integration of complementary functionalities (namely; powering and sensing) in a singular nanostructure, self-sustained gas sensors will be demonstrated. Moreover, a rational methodology to design organic surface functionalization that provide high selectivity towards single gas species will also be discussed. Specifically, theoretical results, confirmed experimentally, indicate that precisely tuning of the sterical and electronic structure of sensor material/organic interfaces can lead to unprecedented selectivity values, comparable to those typical of bioselective processes. Finally, an integrated gas sensor that combine both the self-powering and selective detection strategies in one single device will also be presented.
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It is part of: Procedia Engineering, 2015, vol. 120, p. 623-627
Comunicació presentada a: Eurosensors 2015 Conference, XXIX edition. September 6 to 9, 2015. Freiburg, Germany. BS 07– Micro- / nanofabrication for MEMS II [BS07-2]
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ISSN: 1877-7058
Appears in Collections:Comunicacions a congressos (Enginyeria Electrònica i Biomèdica)
Publicacions de projectes de recerca finançats per la UE

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