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Cited by 250

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Ultrasensitive, label-free, and real-time immunodetection using silicon field-effect transistors

Kim, Ansoon, Ah, Chil Seong, Yu, Han Young, Yang, Jong-Heon, Baek, In-Bok, Ahn, Chang-Guen, Park, Chan Woo, Jun, Myung Sim, Lee, Sungjae·2007·Applied Physics Letters

Abstract

Ultrasensitive, label-free, and real-time prostate-specific antigen (PSA) sensor was developed using n-type silicon nanowire-based structures configured as field-effect transistors using the conventional “top-down” semiconductor processes. Specific binding of PSA with antibody of PSA (anti-PSA) immobilized on the Si surface through covalent linkage leads to a conductivity change in response to variations of electric field at the surface. The conductance changes depending on PSA concentrations and pH values in solution according to isoelectric point of PSA provide the evidence of the real-time detection of 1fg∕ml PSA. The authors also explored the sensitivity of PSA immunodetection depending on both Si–field-effect transistors (FET) dimensions and doping concentrations to provide strategy for fabrication of an ultrasensitive Si-FET biosensor.

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Metadata

Authors
Kim, A., Ah, C. S., Yu, H. Y., Yang, J.-H., Baek, I.-B., Ahn, C.-G., Park, C. W., Jun, M. S., & Lee, S.
Venue
Applied Physics Letters
Published
2007-09-03
Volume
91
Issue
10
ISSN
  • 0003-6951 (ISSN-L)
  • 1077-3118
OpenAlex
W2068235344
Cited by
250
References
1
FWCI
11.89
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Ultrasensitive, label-free, and real-time immunodetection using silicon field-effect transistors. https://app.cochat.ai/papers/10.1063/1.2779965
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Kim, A., Ah, C. S., Yu, H. Y., Yang, J.-H., Baek, I.-B., Ahn, C.-G., Park, C. W., Jun, M. S., & Lee, S. (2007). Ultrasensitive, label-free, and real-time immunodetection using silicon field-effect transistors. Applied Physics Letters. https://doi.org/10.1063/1.2779965

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