Evanescent field trapping of bacterial spores using photonic crystal cavities

Thijs van Leest; Jaap Caro

doi:10.1117/12.2002046

5 March 2013 Evanescent field trapping of bacterial spores using photonic crystal cavities

Thijs van Leest, Jaap Caro

Proceedings Volume 8570, Frontiers in Biological Detection: From Nanosensors to Systems V; 857006 (2013) https://doi.org/10.1117/12.2002046
Event: SPIE BiOS, 2013, San Francisco, California, United States

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.

Citation Download Citation

Thijs van Leest and Jaap Caro "Evanescent field trapping of bacterial spores using photonic crystal cavities", Proc. SPIE 8570, Frontiers in Biological Detection: From Nanosensors to Systems V, 857006 (5 March 2013); https://doi.org/10.1117/12.2002046

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