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Sensors 2008, 8(1), 561-581; doi:10.3390/s8010561
Review

Review on Hydrogel-based pH Sensors and Microsensors

1,* , 1, 1, 1, 2 and 3
Received: 2 December 2007; Accepted: 24 January 2008 / Published: 25 January 2008
(This article belongs to the Special Issue State-of-the-Art Polymer Based pH Sensors)
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Abstract: Stimuli-responsive hydrogels are materials with great potential for development of active functionalities in fluidics and micro-fluidics. Based on the current state of research on pH sensors, hydrogel sensors are described qualitatively and quantitatively for the first time. The review introduces the physical background of the special properties of stimuli-responsive hydrogels. Following, transducers are described which are able to convert the non-electrical changes of the physical properties of stimuli-responsive hydrogels into an electrical signal. Finally, the specific sensor properties, design rules and general conditions for sensor applications are discussed.
Keywords: pH sensor; microsensor; stimuli-responsive hydrogel; phase transition. pH sensor; microsensor; stimuli-responsive hydrogel; phase transition.
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Richter, A.; Paschew, G.; Klatt, S.; Lienig, J.; Arndt, K.-F.; Adler, H.-J.P. Review on Hydrogel-based pH Sensors and Microsensors. Sensors 2008, 8, 561-581.

AMA Style

Richter A, Paschew G, Klatt S, Lienig J, Arndt K-F, Adler H-JP. Review on Hydrogel-based pH Sensors and Microsensors. Sensors. 2008; 8(1):561-581.

Chicago/Turabian Style

Richter, Andreas; Paschew, Georgi; Klatt, Stephan; Lienig, Jens; Arndt, Karl-Friedrich; Adler, Hans-Jürgen P. 2008. "Review on Hydrogel-based pH Sensors and Microsensors." Sensors 8, no. 1: 561-581.


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