Kim, Min Hyung Park, Heekyeong Lee, Hyungbeen Nam, Kihwan Jeong, Seokhwan Omkaram, Inturu Yoon, Dae Sung Lee, Sei Young Kim, Sunkook Lee, Sang Woo 2024-01-20T03:30:48Z 2024-01-20T03:30:48Z 2021-09-04 2016-10 2166-532X https://pubs.kist.re.kr/handle/201004/123643 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). English AMER INST PHYSICS CONDUCTING POLYMER NANOWIRE LABEL-FREE CARBON NANOTUBE SENSITIVE DETECTION CANCER-DIAGNOSIS BIOSENSORS SENSORS BIOMARKER CIRCUITS Research Update: Nanoscale surface potential analysis of MoS2 field-effect transistors for biomolecular detection using Kelvin probe force microscopy Article 10.1063/1.4964488 1 APL MATERIALS, v.4, no.10 APL MATERIALS 4 10 scie scopus 000387576100001 2-s2.0-84992708469 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Science & Technology - Other Topics Materials Science Physics Article CONDUCTING POLYMER NANOWIRE LABEL-FREE CARBON NANOTUBE SENSITIVE DETECTION CANCER-DIAGNOSIS BIOSENSORS SENSORS BIOMARKER CIRCUITS