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- W2076249537 abstract "In this work, a focused ion beam (FIB) milling process has been developed to fabricate 50 nm Bi nanowire and transistor structures using FEI‐200 dual beam FIB system. For the fabrication, 50 nm bismuth film was thermally evaporated through EBL patterned PMMA windows onto SiO2 substrates with pre‐defined contact pads. Bi nanowire widths ranging from 30 nm to 100 nm have been successfully fabricated by milling out unwanted areas using 30 KeV Ga+ ion beam. A single‐pixel‐line ion beam blanking technique has been utilised to fabricate Bi nanowire as small as 30 nm in diameter and few micrometers long. In order to form good ohmic contacts for sub 50 nm bismuth nanowires, a drill‐and‐fill process has been developed using FIB to sputter away the surface oxide of bismuth after the in‐situ platinum nanowire contacts deposition. To our knowledge, this is the first time a focused ion beam process has been used to fabricate bismuth nanowire. The fabricated Bi nanowires were electrically characterised using a semiconductor analyser that showed good ohmic contact to the electrodes. In this paper, the fabrication experiments and the characterisation results for Bi nanowires as small as 50 nm in diameter are presented. Several FIB issues involved in Bi device making and ohmic contacts to Bi nanowires will also be discussed." @default.
- W2076249537 created "2016-06-24" @default.
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- W2076249537 date "2009-01-01" @default.
- W2076249537 modified "2023-09-23" @default.
- W2076249537 title "FABRICATION OF BISMUTH NANOWIRE DEVICES USING FOCUSED ION BEAM MILLING" @default.
- W2076249537 cites W2080537040 @default.
- W2076249537 doi "https://doi.org/10.1063/1.3203244" @default.
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