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Journal Article
Photosensitive Biosensor Array System Using Optical Addressing without an Addressing Circuit on Array Biochips
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- Authors
- Chang-Geun Ahn, Chil Seong Ah, Tae-Youb Kim, Chan Woo Park, Jong-Heon Yang, Ansoon Kim, Gun Yong Sung
- Issue Date
- 2010-09
- Citation
- Applied Physics Letters, v.97, no.10, pp.1-3
- ISSN
- 0003-6951
- Publisher
- American Institute of Physics (AIP)
- Language
- English
- Type
- Journal Article
- Abstract
- This paper introduces a photosensitive biosensor array system with a simple photodiode array that detects photocurrent changes caused by reactions between probe and target molecules. Using optical addressing, the addressing circuit on the array chip is removed for low-cost application, and real cell addressing is achieved using an externally located computer-controllable light-emitting diode array module. The fabricated biosensor array chip shows a good dynamic range of 1-100 ng/mL under prostate-specific antigen detection, with an on-chip resolution of roughly 1 ng/mL. © 2010 American Institute of Physics.
- KSP Keywords
- Antigen detection, Biosensor array, Light-emitting diode array, Low-cost, Photodiode array, Photosensitive biosensor, array chip, controllable light, dynamic range, light emitting diodes(LED), on-chip