Rapid 3D Patterning of Poly(acrylic acid) Ionic Hydrogel for Miniature pH Sensors. Issue 7 (8th December 2015)

• Record Type: Journal Article
• Authors: Yin, Ming‐Jie; Yao, Mian; Gao, Shaorui; Zhang, A. Ping; Tam, Hwa‐Yaw; Wai, Ping‐Kong A.
• Is Part Of: Advanced materials. Volume 28:Issue 7(2016)
• Page Start: 1394
• Page End: 1399
• Publication Date: 2015-12-08
• Subjects: optical biosensors -- optical stereolithography -- ionic hydrogels -- pH sensors -- photopolymerization; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201504021
• Languages: English
• ISSNs: 0935-9648

Abstract

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.