Refine
Institute
Has Fulltext
- no (10)
Document Type
- Part of a Book (10) (remove)
Keywords
- Biomolecular logic gate (1)
- Chemical imaging (1)
- Coat protein (1)
- DNA (1)
- Enzyme biosensor (1)
- Enzyme nanocarrier (1)
- Field-effect device (1)
- Field-effect sensor (1)
- Glucose biosensor (1)
- Glucose oxidase (1)
Is part of the Bibliography
- no (10)
The light-addressable potentiometric sensor (LAPS) and scanning photo-induced impedance microscopy (SPIM) are two closely related methods to visualise the distributions of chemical species and impedance, respectively, at the interface between the sensing surface and the sample solution. They both have the same field-effect structure based on a semiconductor, which allows spatially resolved and label-free measurement of chemical species and impedance in the form of a photocurrent signal generated by a scanning light beam. In this article, the principles and various operation modes of LAPS and SPIM, functionalisation of the sensing surface for measuring various species, LAPS-based chemical imaging and high-resolution sensors based on silicon-on-sapphire substrates are described and discussed, focusing on their technical details and prospective applications.