Infrared surface plasmon spectroscopy and biosensing

Victor Yashunsky; Alexander Zilbershtein; Vladislav Lirtsman; Tal Marciano; Benjamin Aroeti; Michael Golosovsky; Dan Davidov

doi:10.1117/12.907255

6 February 2012 Infrared surface plasmon spectroscopy and biosensing

Victor Yashunsky, Alexander Zilbershtein, Vladislav Lirtsman, Tal Marciano, Benjamin Aroeti, Michael Golosovsky, Dan Davidov

Author Affiliations +

Proceedings Volume 8234, Plasmonics in Biology and Medicine IX; 823419 (2012) https://doi.org/10.1117/12.907255
Event: SPIE BiOS, 2012, San Francisco, California, United States

Abstract

The cell morphology is a valuable indicator of the physical condition and general status of the cell. Here we demonstrate a methodology for noninvasive biosensing of adherent living cells. Our method is based on infrared reflection spectroscopy of living cells cultured on thin Au film. To characterize cell morphology we utilized the unique properties of the infrared surface plasmon (λ=1-3 μm) and infrared guided wave that travel inside the cell monolayer. We demonstrate that our method enables monitoring of submicron variations in cell morphology in real-time and in a labelfree manner. In addition to morphological characterization, our method allows investigation of chemical composition and molecular structure of cells through infrared absorption spectroscopy analysis.

Citation Download Citation

Victor Yashunsky, Alexander Zilbershtein, Vladislav Lirtsman, Tal Marciano, Benjamin Aroeti, Michael Golosovsky, and Dan Davidov "Infrared surface plasmon spectroscopy and biosensing", Proc. SPIE 8234, Plasmonics in Biology and Medicine IX, 823419 (6 February 2012); https://doi.org/10.1117/12.907255

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