In-situ control of on-chip angstrom gaps, atomic switches, and molecular junctions by light irradiation
Nano Today(2021)
Abstract
•Adjustable nanogaps with sub-angstrom precision were fabricated by laser irradiation..•Atomic-level metal contacts switches were realized and the direction of the switching can be selectively controlled..•The nanogap’s size can be continuously changed, providing a technique to measure the conductance of single molecules.•The small spatial focus size of the laser beam makes it feasible to realize addressable on chip molecular junction arrays.
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Key words
Angstrom gaps,Atomic switches,Thermal expansion,Light heating,Break junctions,Single-molecule study
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