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Title: Ordered horizontal Sb{sub 2}Te{sub 3} nanowires induced by femtosecond lasers

Nanowires are of intense interest on account of their ability to confine electronic and phononic excitations in narrow channels, leading to unique vibronic and optoelectronic properties. Most systems reported to date exhibit nanowire axes perpendicular to the substrate surface, while for many applications (e.g., photodetectors and sensors), a parallel orientation may be advantageous. Here, we report the formation of in-plane Sb{sub 2}Te{sub 3} nanowires using femtosecond laser irradiation. High-resolution scanning transmission electron microscopy imaging and element mapping reveal that an interesting laser-driven anion exchange mechanism is responsible for the nanowire formation. This development points the way to the scalable production of a distinct class of nanowire materials with in-plane geometry.
Authors:
; ; ; ; ; ; ;  [1] ; ;  [2] ;  [3] ;  [1] ;  [4]
  1. Department of Physics, University of Michigan, Ann Arbor, Michigan 48109 (United States)
  2. Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109 (United States)
  3. Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109 (United States)
  4. (United States)
Publication Date:
OSTI Identifier:
22391997
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 77 NANOSCIENCE AND NANOTECHNOLOGY; ANTIMONY TELLURIDES; ION EXCHANGE; LASER RADIATION; LASERS; NANOWIRES; SUBSTRATES; SURFACES; TRANSMISSION ELECTRON MICROSCOPY