Byeon, Hye-Hyeon Lee, Seung-Woo Lee, Eun-Hee Kim, Woong Yi, Hyunjung 2024-01-20T03:03:30Z 2024-01-20T03:03:30Z 2021-09-05 2016-10-20 2045-2322 https://pubs.kist.re.kr/handle/201004/123549 Delicately assembled composites of semiconducting nanomaterials and biological materials provide an attractive interface for emerging applications, such as chemical/biological sensors, wearable health monitoring devices, and therapeutic agent releasing devices. The nanostructure of composites as a channel and a sensing material plays a critical role in the performance of field effect transistors (FETs). Therefore, it is highly desirable to prepare elaborate composite that can allow the fabrication of high performance FETs and also provide high sensitivity and selectivity in detecting specific chemical/biological targets. In this work, we demonstrate that high performance FETs can be fabricated with a hydrodynamically assembled composite, a semiconducting nanomesh, of semiconducting single-walled carbon nanotubes (S-SWNTs) and a genetically engineered M13 phage to show strong binding affinity toward SWNTs. The semiconducting nanomesh enables a high on/off ratio (similar to 10(4)) of FETs. We also show that the threshold voltage and the channel current of the nanomesh FETs are sensitive to the change of the M13 phage surface charge. This biological gate effect of the phage enables the detection of biologically important molecules such as dopamine and bisphenol A using nanomesh-based FETs. Our results provide a new insight for the preparation of composite material platform for highly controllable bio/electronics interfaces. English NATURE PUBLISHING GROUP WALLED CARBON NANOTUBES TRANSPARENT ELECTRODES PEPTIDES GRAPHENE FUNCTIONALIZATION FABRICATION GRAPHITE HYSTERESIS SELECTION FILMS Biologically templated assembly of hybrid semiconducting nanomesh for high performance field effect transistors and sensors Article 10.1038/srep35591 1 SCIENTIFIC REPORTS, v.6 SCIENTIFIC REPORTS 6 scie scopus 000386197400001 2-s2.0-84992390979 Multidisciplinary Sciences Science & Technology - Other Topics Article WALLED CARBON NANOTUBES TRANSPARENT ELECTRODES PEPTIDES GRAPHENE FUNCTIONALIZATION FABRICATION GRAPHITE HYSTERESIS SELECTION FILMS Nanomesh field effect transistors biosensors single-walled carbon nanotubes M13 phage