Research Update: Nanoscale surface potential analysis of MoS2 field-effect transistors for biomolecular detection using Kelvin probe force microscopy

Kim, Min Hyung; Park, Heekyeong; Lee, Hyungbeen; Nam, Kihwan; Jeong, Seokhwan; Omkaram, Inturu; Yoon, Dae Sung; Lee, Sei Young; Kim, Sunkook; Lee, Sang Woo

doi:10.1063/1.4964488

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Research Update: Nanoscale surface potential analysis of MoS2 field-effect transistors for biomolecular detection using Kelvin probe force microscopy

Kim, Min Hyung;
Park, Heekyeong;
Lee, Hyungbeen;
Nam, Kihwan;
Jeong, Seokhwan;
... Yoon, Dae Sung;
외 4명

Citations

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7

Citations

SCOPUS

7

초록

We used high-resolution Kelvin probe force microscopy (KPFM) to investigate the immobilization of a prostate specific antigen (PSA) antibody by measuring the surface potential (SP) on a MoS2 surface over an extensive concentration range (1 pg/ml-100 mu g/ml). After PSA antibody immobilization, we demonstrated that the SP on the MoS2 surface characterized by KPFM strongly correlated to the electrical signal of a MoS2 bioFET. This demonstration can not only be used to optimize the immobilization conditions for captured molecules, but can also be applied as a diagnostic tool to complement the electrical detection of a MoS2 FET biosensor. (C) 2016 Author(s).

키워드

MoS2 FET; KPFM; surface potential; biosensor; CONDUCTING POLYMER NANOWIRE; LABEL-FREE; CARBON NANOTUBE; SENSITIVE DETECTION; CANCER-DIAGNOSIS; BIOSENSORS; SENSORS; BIOMARKER; CIRCUITS

제목: Research Update: Nanoscale surface potential analysis of MoS2 field-effect transistors for biomolecular detection using Kelvin probe force microscopy

저자: Kim, Min Hyung; Park, Heekyeong; Lee, Hyungbeen; Nam, Kihwan; Jeong, Seokhwan; Omkaram, Inturu; Yoon, Dae Sung; Lee, Sei Young; Kim, Sunkook; Lee, Sang Woo

DOI: 10.1063/1.4964488

발행일: 2016-10

유형: Article

저널명: APL Materials

권: 4

호: 10

언어: ENG

출판사: AMER INST PHYSICS

발행국가: 미국

ISSN: E 2166-532X
P 2166-532X