Imaging snd Spectroscopy of Small Molecules by Scanning Tunneling Microscopy

Abstract

Ultra-high vacuum (UHV)-scanning tunneling microscopy was used to image for the first time an individual double helix of deoxyribonucleic acid with atomic resolution(1,2). In this study, DNA was deposited onto a highly oriented pyrolitic graphite (HOPG) surface without chemical modification and imaged with an STM to reveal structure down to the atomic-scale. The images represent the hightest magnification of a single molecule of DNA by any technique to date. The goal was to explore the effects of surface defects on the electronic structure of semiconductors. Keywords: Microscopy, Optics, Semiconductors, Physical chemistry, Imaging adsorbates, Scanning Tunneling Microscopy(STM), Spectroscopy, Molecules, DNA.

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Document Details

Document Type
Technical Report
Publication Date
May 25, 1990
Accession Number
ADA222572

Entities

People

  • John D. Baldeschwieler

Organizations

  • California Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acids
  • Alcohols
  • Chemical Synthesis
  • Chemistry
  • Crystallography
  • Deoxyribonucleic Acids
  • Electrons
  • Materials
  • Metals
  • Microscopy
  • Molecules
  • Physical Chemistry
  • Semiconductor Devices
  • Semiconductors
  • Small Molecules
  • Transition Metals
  • X Rays

Fields of Study

  • Physics

Readers

  • Molecular Genetics
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene