Rapid 3D Patterning of Poly(acrylic acid) Ionic Hydrogel for Miniature pH Sensors

Rapid 3D Patterning of Poly(acrylic acid) Ionic Hydrogel for Miniature pH Sensors

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 demonst...

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Veröffentlicht in:Advanced materials (Weinheim) 2016-02, Vol.28 (7), p.1394-1399
Hauptverfasser: Yin, Ming-Jie, Yao, Mian, Gao, Shaorui, Zhang, A. Ping, Tam, Hwa-Yaw, Wai, Ping-Kong A.
Format: Artikel
Sprache:eng
Schlagworte:
Devices
Hydrogels
ionic hydrogels
Microfibers
Miniature
optical biosensors
optical stereolithography
Patterning
pH sensors
photopolymerization
Sensors
Three dimensional
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Zusammenfassung: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.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201504021