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Proceedings Paper

Evanescent field trapping of bacterial spores using photonic crystal cavities
Author(s): Thijs van Leest; Jaap Caro
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Paper Abstract

We experimentally demonstrate optical trapping of single B. subtilis spores using the enhanced field of a cavity at resonance in a planar silicon photonic crystal. By tracking the suppressed Brownian motion of a spore in three types of optical traps, generated with three types of cavities (H0, H1 and L3) we derive trap stiffnesses of around 7.6 pN/nm/W and find good agreement with calculated values obtained with 3D FDTD simulations. We envision that planar photonic crystals provide a suitable platform for the manipulation and sensing of bio-particles.

Paper Details

Date Published: 5 March 2013
PDF: 11 pages
Proc. SPIE 8570, Frontiers in Biological Detection: From Nanosensors to Systems V, 857006 (5 March 2013); doi: 10.1117/12.2002046
Show Author Affiliations
Thijs van Leest, Technische Univ. Delft (Netherlands)
Jaap Caro, Technische Univ. Delft (Netherlands)

Published in SPIE Proceedings Vol. 8570:
Frontiers in Biological Detection: From Nanosensors to Systems V
Benjamin L. Miller; Philippe M. Fauchet, Editor(s)

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