Byeon, Hye-Hyeon Lee, Woo Chul Kim, Wonbin Kim, Seong Keun Kim, Woong Yi, Hyunjung 2024-01-20T02:31:37Z 2024-01-20T02:31:37Z 2021-09-04 2017-01-13 0957-4484 https://pubs.kist.re.kr/handle/201004/123206 Single-walled carbon nanotubes (SWNTs) are one of the promising electronic components for nanoscale electronic devices such as field-effect transistors (FETs) owing to their excellent device characteristics such as high conductivity, high carrier mobility and mechanical flexibility. Localized gating gemometry of FETs enables individual addressing of active channels and allows for better electrostatics via thinner dielectric layer of high k-value. For localized gating of SWNTs, it becomes critical to define SWNTs of controlled nanostructures and functionality onto desired locations in high precision. Here, we demonstrate that a biologically templated approach in combination of microfabrication processes can successfully produce a nanostructured channels of SWNTs for localized active devices such as local bottom-gated FETs. A large-scale nanostructured network, nanomesh, of SWNTs were assembled in solution using an M13 phage with strong binding affinity toward SWNTs and micrometer-scale nanomesh channels were defined using negative photolithography and plasma-etching processes. The bio-fabrication approach produced local bottom-gated FETs with remarkably controllable nanostructures and successfully enabled semiconducting behavior out of unsorted SWNTs. In addition, the localized gating scheme enhanced the device performances such as operation voltage and I-on/I-off ratio. We believe that our approach provides a useful and integrative method for fabricating electronic devices out of nanoscale electronic materials for applications in which tunable electrical properties, mechanical flexibility, ambient stability, and chemical stability are of crucial importance. English IOP PUBLISHING LTD CONDUCTIVE NANOMESH FILMS Bio-fabrication of nanomesh channels of single-walled carbon nanotubes for locally gated field-effect transistors Article 10.1088/1361-6528/28/2/025304 1 NANOTECHNOLOGY, v.28, no.2 NANOTECHNOLOGY 28 2 scie scopus 000390561100002 2-s2.0-85003666391 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Science & Technology - Other Topics Materials Science Physics Article CONDUCTIVE NANOMESH FILMS bio-fabrication field-effect transistors local bottom-gate (LBG) geometry single-walled carbon nanotubes M13 phage nanomesh