title: Review on Hydrogel-based pH Sensors and Microsensors.
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.
authors.affiliation: Technische Universität Dresden, Institute of Electromechanical and Electronic Design, 01062 Dresden, Germany. andreas.richter@chemie.tu-dresden.de.
authors.forename: Andreas
authors.initials: A
authors.lastname: Richter
authors.affiliation: Technische Universität Dresden, Institute of Electromechanical and Electronic Design, 01062 Dresden, Germany.
authors.forename: Georgi
authors.initials: G
authors.lastname: Paschew
authors.affiliation: Technische Universität Dresden, Institute of Electromechanical and Electronic Design, 01062 Dresden, Germany.
authors.forename: Stephan
authors.initials: S
authors.lastname: Klatt
authors.affiliation: Technische Universität Dresden, Institute of Electromechanical and Electronic Design, 01062 Dresden, Germany.
authors.forename: Jens
authors.initials: J
authors.lastname: Lienig
authors.affiliation: Technische Universität Dresden, Physical Chemistry of Polymers, 01062 Dresden, Germany.
authors.forename: Karl-Friedrich
authors.initials: KF
authors.lastname: Arndt
authors.affiliation: Technische Universität Dresden, Macromolecular Chemistry and Textile Chemistry, 01062 Dresden, Germany.
authors.forename: Hans-Jürgen P
authors.initials: HP
authors.lastname: Adler
keywords: microsensor; pH sensor; phase transition.; stimuli-responsive hydrogel