eprintid: 17171
rev_number: 16
userid: 1419
dir: disk0/00/01/71/71
datestamp: 2013-01-23 21:45:22
lastmod: 2019-02-02 16:55:17
status_changed: 2013-01-23 21:45:22
type: article
metadata_visibility: show
item_issues_count: 0
eprint_status: archive
creators_name: Reese, CE
creators_name: Mikhonin, AV
creators_name: Kamenjicki, M
creators_name: Tikhonov, A
creators_name: Asher, SA
creators_email: 
creators_email: 
creators_email: 
creators_email: 
creators_email: asher@pitt.edu
creators_id: 
creators_id: 
creators_id: 
creators_id: 
creators_id: ASHER
title: Nanogel Nanosecond Photonic Crystal Optical Switching
ispublished: pub
divisions: sch_as_chemistry
full_text_status: public
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.
date: 2004-02-11
date_type: published
publication: Journal of the American Chemical Society
volume: 126
number: 5
pagerange: 1493 - 1496
refereed: TRUE
issn: 0002-7863
id_number: 10.1021/ja037118a
pmid: 14759207
citation:   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     
document_url: http://d-scholarship-dev.library.pitt.edu/17171/1/licence.txt