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Fabrication of nanoelectrodes and nanojunction hydrogen sensor

Title
Fabrication of nanoelectrodes and nanojunction hydrogen sensor
Author
유봉영
Keywords
NANOPARTICLES; ELECTRODES; DEVICES; NANOWIRES; GAPS
Issue Date
2008-10
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v. 93, No. 13, Page. 133111
Abstract
A simple method to fabricate nanoelectrodes with controllable gap was demonstrated by local electrical melting of nickel nanowire. The width of nanogap was tuned by diameter of nanowire and the gap distance was controlled by voltage sweep rate. These nanoelectrodes were then electrochemically backfilled with palladium to fabricate hydrogen nanojunction sensor. Sensors showed excellent sensing performance (dynamic range from 0.1% to 4% H-2 and <1 min response time for H-2 concentration > 2%) at room temperature. Our method of electrochemically backfilling a nanogap opens up a possibility to create various nanojunction devices in a cost- effective matter. (C) 2008 American Institute of Physics.
URI
https://aip.scitation.org/doi/abs/10.1063/1.2993337https://repository.hanyang.ac.kr/handle/20.500.11754/80725
ISSN
0003-6951
DOI
10.1063/1.2993337
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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