An artificial nose based on a micromechanical cantilever array
| Autor: | James K. Gimzewski, J P Ramseyer, R. Berger, Marko Baller, H. J. Güntherodt, F.M. Battiston, Ch. Gerber, Ernst Meyer, Peter Fornaro, Hans Peter Lang |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
chemistry.chemical_classification
Analyte Cantilever Hydrogen Silicon business.industry Chemistry chemistry.chemical_element Nanotechnology Polymer engineering.material Biochemistry Analytical Chemistry Coating Monolayer engineering Environmental Chemistry Optoelectronics business Layer (electronics) Spectroscopy |
| Zdroj: | Analytica Chimica Acta. 393:59-65 |
| ISSN: | 0003-2670 |
| DOI: | 10.1016/s0003-2670(99)00283-4 |
| Popis: | A novel chemical sensor based on a micromechanical array of silicon cantilevers is presented. Chemical reactions are transduced by sensitization of cantilevers with coatings such as metals, self-assembled monolayers, or polymers into a mechanical response. This is read out using an optical beam-deflection technique by a sequential readout scheme. Reference cantilever sensors permit subtraction of background signals (differential measurement). Coating of each cantilever sensor with a different sensitive layer allows operation of the array-device as a new form of chemical nose. Detection of hydrogen, primary alcohols, natural flavors, and water vapor is demonstrated. We show that the magnitude of sensor response is proportional to the amount of analyte present. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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