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Nanogel Nanosecond Photonic Crystal Optical Switching

Reese, CE and Mikhonin, AV and Kamenjicki, M and Tikhonov, A and Asher, SA (2004) Nanogel Nanosecond Photonic Crystal Optical Switching. Journal of the American Chemical Society, 126 (5). 1493 - 1496. ISSN 0002-7863

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Abstract

We developed a robust nanosecond photonic crystal switching material by using poly(N-isopropylacrylamide) (PNIPAM) nanogel colloidal particles that self-assemble into crystalline colloidal arrays (CCAs). The CCA was polymerized into a loose-knit hydrogel which permits the individual embedded nanogel PNIPAM particles to coherently and synchronously undergo their thermally induced volume phase transitions. A laser T-jump from 30 to 35°C actuates the nanogel particle shrinkage; the resulting increased diffraction decreases light transmission within 900 ns. Additional transmission decreases occur with characteristic times of 19 and 130 ns. Individual NIPAM sphere volume switching occurs in the ∼100 ns time regime. These nanogel nanosecond phenomena may be useful in the design of fast photonic crystal switches and optical limiting materials. Smaller nanogels will show even faster volume phase transitions.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Reese, CE
Mikhonin, AV
Kamenjicki, M
Tikhonov, A
Asher, SAasher@pitt.eduASHER
Date: 11 February 2004
Date Type: Publication
Journal or Publication Title: Journal of the American Chemical Society
Volume: 126
Number: 5
Page Range: 1493 - 1496
DOI or Unique Handle: 10.1021/ja037118a
Schools and Programs: Dietrich School of Arts and Sciences > Chemistry
Refereed: Yes
ISSN: 0002-7863
PubMed ID: 14759207
Date Deposited: 23 Jan 2013 21:45
Last Modified: 02 Feb 2019 16:55
URI: http://d-scholarship.pitt.edu/id/eprint/17171

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