ES2.4 - Hydrogel-based chemical sensors
- Event
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
Vienna, Austria - Chapter
- Emerging Systems 2 - Sensing Strategies
- Author(s)
- G. Gerlach - Technische Universität Dresden, Solid-State Electronics Laboratory, Dresden (Germany)
- Pages
- 318 - 319
- DOI
- 10.5162/IMCS2018/ES2.4
- ISBN
- 978-3-9816876-9-9
- Price
- free
Abstract
Hydrogels are cross-linked polymer networks able to absorb or to release large amounts of water that can be excited by a large spectrum of different physical (e.g. temperature, electrical voltage, magnetic field) and chemical factors (e.g. pH value). The water uptake is associated with a considerable volume change and a swelling pressure, respectively. Hydrogels can easily be tailored with respect to a certain measurand. Hydrogel-based sensors utilize the hydrogel s swelling by its influence, e.g., on the swelling pressure, the deflection or the refractive index. This contribution will report on recent sensor developments at the Solid-State Electronics Laboratory at Technische Universität Dresden, Germany.