@inproceedings{084c825c2c2d4f209dbcf7fa5318cada,
title = "Miniaturization of photothermal cantilever deflection spectroscopy with an electrical readout",
abstract = "The chemical selectivity challenge of microcantilever sensors can be overcome by photothermal cantilever deflection spectroscopy (PCDS). A bi-material cantilever responds to heat generated by non-radiative decay process when the adsorbed molecules are resonantly excited with infrared (IR) light. The variation in cantilever deflection amplitude as a function of illuminating IR wavelength corresponds to the conventional IR absorption spectrum of the adsorbed molecules. In addition, the mass of the adsorbed molecules can be determined by measuring the resonance frequency shift of the cantilever for the quantitative analysis. This technique offers unprecedented opportunities for highly selective as well as sensitive chemical sensing without relying on chemoselective interfaces. However, conventional optical signal readout schemes employed for microcantilever sensors pose challenges on miniaturization and system level integration. Here, we demonstrate PCDS using a piezoresistive cantilever which can be easily miniaturized and integrated into a portable sensor platform.",
author = "S. Kim and D. Lee and T. Thundat",
note = "Publisher Copyright: {\textcopyright} The Electrochemical Society.; Symposia on Chemical Sensors 11: Chemical and Biological Sensors and Analytical Systems and Microfabricated and Nanofabricated Systems for MEMS/NEMS 11 (Chemical and Biological Sensors) - 2014 ECS and SMEQ Joint International Meeting - 226th Meeting of The Electrochemical Society ; Conference date: 05-10-2014 Through 09-10-2014",
year = "2014",
doi = "10.1149/06401.0019ecst",
language = "English",
series = "ECS Transactions",
publisher = "Electrochemical Society Inc.",
number = "1",
pages = "19--24",
editor = "J. Li and Kreller, \{C. R.\} and A. Simonian and \{Stefan-van Staden\}, R. and Sekhar, \{P. K.\} and P. Vanysek and N. Wu and A. Khosla and Aguilar, \{Z. P.\} and Carter, \{M. T.\} and G. Hunter and Hesketh, \{P. J.\} and L. Nagahara and B. Chin and S. Mitra",
booktitle = "Chemical and Biological Sensors 11 -and- MEMS/NEMS 11",
address = "United States",
edition = "1",
}