Ultrasensitive and Selective Field-Effect Transistor-Based Biosensor Created by Rings of MoS2 NanoporesClick to copy article linkArticle link copied!
- Heekyeong ParkHeekyeong ParkHarvard Institute of Medicine, Harvard Medical School, Harvard University, Brigham and Women’s Hospital, Boston, Massachusetts 02115, United StatesDepartment of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of KoreaMore by Heekyeong Park
- Seungho BaekSeungho BaekDepartment of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of KoreaMore by Seungho Baek
- Anamika SenAnamika SenDepartment of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of KoreaMore by Anamika Sen
- Bongjin JungBongjin JungElectronics and Telecommunications Research Institute (ETRI), Daejeon, 34129, Republic of KoreaMore by Bongjin Jung
- Junoh ShimJunoh ShimDepartment of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of KoreaMore by Junoh Shim
- Yun Chang ParkYun Chang ParkMeasurement and Analysis Division, National Nanofab Center (NNFC), Daejeon, 16229, Republic of KoreaMore by Yun Chang Park
- Luke P. Lee*Luke P. Lee*Email: [email protected]Harvard Institute of Medicine, Harvard Medical School, Harvard University, Brigham and Women’s Hospital, Boston, Massachusetts 02115, United StatesDepartment of Biophysics, Institute of Quantum Biophysics, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of KoreaDepartment of Bioengineering, Department of Electrical Engineering and Computer Science, University of California at Berkeley, Berkeley, California 94720, United StatesMore by Luke P. Lee
- Young Jun Kim*Young Jun Kim*Email: [email protected]BioNano Health Guard Research Center, Daejeon, 34141, Republic of KoreaMore by Young Jun Kim
- Sunkook Kim*Sunkook Kim*Email: [email protected]Department of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of KoreaMore by Sunkook Kim
Abstract

The ubiquitous field-effect transistor (FET) is widely used in modern digital integrated circuits, computers, communications, sensors, and other applications. However, reliable biological FET (bio-FET) is not available in real life due to the rigorous requirement for highly sensitive and selective bio-FET fabrication, which remains a challenging task. Here, we report an ultrasensitive and selective bio-FET created by the nanorings of molybdenum disulfide (MoS2) nanopores inspired by nuclear pore complexes. We characterize the nanoring of MoS2 nanopores by scanning transmission electron microscopy, Raman, and X-ray photoelectron spectroscopy spectra. After fabricating MoS2 nanopore rings-based bio-FET, we confirm edge-selective functionalization by the gold nanoparticle tethering test and the change of electrical signal of the bio-FET. Ultrahigh sensitivity of the MoS2 nanopore edge rings-based bio-FET (limit of detection of 1 ag/mL) and high selectivity are accomplished by effective coupling of the aptamers on the nanorings of the MoS2 nanopore edge for cortisol detection. We believe that MoS2 nanopore edge rings-based bio-FET would provide platforms for everyday biosensors with ultrahigh sensitivity and selectivity.
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