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Proceedings Paper

Light-activated nanoheaters with programmable time-dependent response (Conference Presentation)
Author(s): Michelle L. Povinelli; Roshni Biswas; Ahmed Morsy

Paper Abstract

We design nanopatterned, all-dielectric structures that heat up suddenly when illuminated by a laser. The delay time for heating can be programmed into the structure by adjusting the spacing and size of holes in the pattern. The key operating principle is excitation of an absorptive, electromagnetic resonance in the structure by laser light, combined with a thermooptic response. Shifting of the resonance in time leads to a sudden increase in absorptive heating when the resonance aligns with the laser wavelength. We use optical transmission measurements to characterize the heating behavior in both air and water and demonstrate controlled microbubble formation.

Paper Details

Date Published: 9 November 2016
PDF: 1 pages
Proc. SPIE 9920, Active Photonic Materials VIII, 992008 (9 November 2016); doi: 10.1117/12.2238265
Show Author Affiliations
Michelle L. Povinelli, The Univ. of Southern California (United States)
Roshni Biswas, The Univ. of Southern California (United States)
Ahmed Morsy, The Univ. of Southern California (United States)


Published in SPIE Proceedings Vol. 9920:
Active Photonic Materials VIII
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)

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