Photothermal imaging of nanoparticles beyond the  diffraction limit

Chi Lok Wong; Beng Koon Ng; Srivathsan Vasudevan; George Chung-Kit Chen; Shuchi Agarwal; Peng Chen; Nolang Fanani; Zhiping Lin

doi:10.1117/1.3600422

1 July 2011 Photothermal imaging of nanoparticles beyond the diffraction limit

Chi Lok Wong, Beng Koon Ng, Srivathsan Vasudevan, George Chung-Kit Chen, Shuchi Agarwal, Peng Chen, Nolang Fanani, Zhiping Lin

Author Affiliations +

Optical Engineering, Vol. 50, Issue 7, 073201 (July 2011). https://doi.org/10.1117/1.3600422

Abstract

In this paper, a full-field photothermal imaging technique, which does not require a time consuming scan as used in the conventional photothermal imaging system, is reported. Imaging on gold nanoparticles (70 nm) and a blue polystyrene bead (193 nm) were conducted and the experimental results demonstrate the visualization ability of the photothermal imaging technique on nanotargets that are below the diffraction limit. The photothermal imaging system can be operated in an ambient environment where vacuum is not required.

©(2011) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Chi Lok Wong, Beng Koon Ng, Srivathsan Vasudevan, George Chung-Kit Chen, Shuchi Agarwal, Peng Chen, Nolang Fanani, and Zhiping Lin "Photothermal imaging of nanoparticles beyond the diffraction limit," Optical Engineering 50(7), 073201 (1 July 2011). https://doi.org/10.1117/1.3600422

Published: 1 July 2011

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