Journal
SMART MATERIALS AND STRUCTURES
Volume 27, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-665X/aadf6c
Keywords
photothermal effect; crosslinked network; light-induced microfluidic; shape memory polymer; nanocomposite
Funding
- National Nature Science Foundation of China [11632005, 11672086]
- Programme of Introducing Talents of Discipline to Universities [B06010]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [11421091]
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A shape memory light-induced microfluidic technology is applied in preprogrammed microfluidic chip based on shape memory gold nanoparticles/poly (vinyl alcohol) nanocomposites. The shape memory gold nanoparticles/poly (vinyl alcohol) nanocomposites display excellent light-induced shape memory property with recovery ratio of nearly 100% in visible light. The crosslinked network of light-induced shape memory gold nanoparticles/poly (vinyl alcohol) nanocomposites forms by aldol reaction, esterification, and/or hydrogen bonding of poly (vinyl alcohol), glutaraldehyde, and gold nanoparticles. The light-induced shape memory mechanism of shape memory gold nanoparticles/poly (vinyl alcohol) nanocomposites is based on photothermal effect of gold nanoparticles and shape memory effect of poly (vinyl alcohol)based shape memory polymer (SMP). In this report, a light-induced microfluidic microvalve is demonstrated based on the shape memory gold nanoparticles/poly (vinyl alcohol) nanocomposites. This research presents demonstration of the shape memory light-induced intelligent microfluidic chip. The light-induced SMP microfluidic microvalve would yield practical, physical, and technological advantages for disposable integrated microfluidic chip laboratories.
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