Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/43306
Title: Rapid 3D patterning of poly(acrylic acid) ionic hydrogel for miniature pH sensors
Authors: Yin, MJ
Yao, M
Gao, S
Zhang, AP 
Tam, HY 
Wai, PKA 
Issue Date: 2016
Source: Advanced materials, 2016, v. 28, no. 7, p. 1394-1399
Abstract: Poly(acrylic acid) (PAA), as a highly ionic conductive hydrogel, can reversibly swell/deswell according to the surrounding pH conditions. An optical maskless stereolithography technology is presented to rapidly 3D pattern PAA for device fabrication. A highly sensitive miniature pH sensor is demonstrated by in situ printing of periodic PAA micropads on a tapered optical microfiber.
Keywords: Ionic hydrogels
Optical biosensors
Optical stereolithography
pH sensors
Photopolymerization
Publisher: Wiley-VCH
Journal: Advanced materials 
ISSN: 0935-9648
EISSN: 1521-4095
DOI: 10.1002/adma.201504021
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