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Localized Collection of Airborne Analytes: A Transport Driven Approach to Improve the Response Time of Existing Gas Sensor Designs including SERS based Detection of Small Molecules

Published online by Cambridge University Press:  08 May 2015

Jun Fang ,
Se-Chul Park ,
Leslie Schlag ,
Thomas Stauden ,
Joerg Pezoldt  and
Heiko O. Jacobs
Jun Fang
Affiliation:
Electrical and Computer Engineering, University of Minnesota 200 Union St. SE, Minneapolis, MN 55455, USA
Se-Chul Park
Affiliation:
Electrical and Computer Engineering, University of Minnesota 200 Union St. SE, Minneapolis, MN 55455, USA
Leslie Schlag
Affiliation:
Fachgebiet Nanotechnologie, Technische Universität Ilmenau Gustav-Kirchhoff-Strasse 1, D-98693 Ilmenau, Germany
Thomas Stauden
Affiliation:
Fachgebiet Nanotechnologie, Technische Universität Ilmenau Gustav-Kirchhoff-Strasse 1, D-98693 Ilmenau, Germany
Joerg Pezoldt
Affiliation:
Fachgebiet Nanotechnologie, Technische Universität Ilmenau Gustav-Kirchhoff-Strasse 1, D-98693 Ilmenau, Germany
Heiko O. Jacobs
Affiliation:
Fachgebiet Nanotechnologie, Technische Universität Ilmenau Gustav-Kirchhoff-Strasse 1, D-98693 Ilmenau, Germany
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Abstract

The detection of single molecular binding events has been a recent trend in sensor research introducing various sensor designs where the active sensing elements are nanoscopic in size. Currently, diffusion-only-transport is often used and it becomes increasingly unlikely for an analyte molecule to “find” and interact with sensing structures where the active area is shrunk in size, trading an increased sensitivity with a long response time. This report introduces electrodynamic nanolens based analyte concentration concepts to transport airborne analytes to nanoscopic sensing points to improve the response time of existing gas sensor designs. In all cases we find that the collection rate is several orders of magnitudes higher than in the case where the collection is driven by diffusion.

Keywords

sensorRaman spectroscopyelectrodeposition
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1746: Symposium GG – Nanomaterials for Harsh Environment Sensors and Related Electronic and Structural Components—Design, Synthesis, Characterization and Utilization , 2015 , mrsf14-1746-gg01-06
Copyright
Copyright © Materials Research Society 2015 

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References

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