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Author

Kim, Kyung Rok
Nano-Electronic Emerging Devices (NEEDs) Lab
Research Interests
  • Nano-CMOS, neuromorphic device, terahertz (THz) plasma-wave transistor (PWT)

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Characterization and capacitive modeling of target concentration-dependent subthreshold swing in silicon nanoribbon biosensors

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Title
Characterization and capacitive modeling of target concentration-dependent subthreshold swing in silicon nanoribbon biosensors
Author
Lee, Won HeeLee, Jin-MooUhm, MiheeLee, JieunKim, Kyung RokChoi, Sung-JinKim, Dong MyongJeong, Yong-JooKim, Dae Hwan
Keywords
biosensor; Silicon nanowire FET; streptavidin-biotin; subthreshold swing
Issue Date
201405
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE ELECTRON DEVICE LETTERS, v.35, no.5, pp.587 - 589
Abstract
The effect of streptavidin concentration as a target molecule on the subthreshold swing (SS) of biotin-functionalized silicon nanoribbon sensors was investigated for a configuration of field effect transistors. The increasing concentration of conjugated target molecules was modeled as a degradation of the coupling capacitance between the electrolyte and the sensor surface. A binding factor for the ratio of conjugation between targets and receptors was modeled as a coupled capacitance and experimentally determined to be from 0.65 (streptavidin at 1 pM) to 1 (1 nM). This result suggests that SS is potentially a good indicator of the target concentration.
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DOI
http://dx.doi.org/10.1109/LED.2014.2312196
ISSN
0741-3106
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ECE_Journal Papers

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