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Manipulation of Adsorbed Atoms and Creation of New Structures on Room-Temperature Surfaces with a Scanning Tunneling Microscope
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Manipulation of Adsorbed Atoms and Creation of New Structures on Room-Temperature Surfaces with a Scanning Tunneling Microscope
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Journal Article
Manipulation of Adsorbed Atoms and Creation of New Structures on Room-Temperature Surfaces with a Scanning Tunneling Microscope
1991
Overview
A general method of manipulating adsorbed atoms and molecules on room-temperature surfaces with the use of a scanning tunneling microscope is described. By applying an appropriate voltage pulse between the sample and probe tip, adsorbed atoms can be induced to diffuse into the region beneath the tip. The field-induced diffusion occurs preferentially toward the tip during the voltage pulse because of the local potential energy gradient arising from the interaction of the adsorbate dipole moment with the electric field gradient at the surface. Depending upon the surface and pulse parameters, cesium (Cs) structures from one nanometer to a few tens of nanometers across have been created in this way on the (110) surfaces of gallium arsenide (GaAs) and indium antimonide (InSb), including structures that do not naturally occur.
Publisher
American Society for the Advancement of Science,American Association for the Advancement of Science,The American Association for the Advancement of Science
Subject
360101 - Metals & Alloys- Preparation & Fabrication
/ 360601 - Other Materials- Preparation & Manufacture
/ Adatoms
/ ALLOYS
/ ATOMS
/ CESIUM
/ Condensed matter: structure, mechanical and thermal properties
/ ELEMENTS
/ Exact sciences and technology
/ METALS
/ Physics
/ SCANNING ELECTRON MICROSCOPY
/ Scanning tunneling microscopy
/ Solid surfaces and solid-solid interfaces
/ SORPTION
/ Statics
/ Surface structure and topography
/ Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties)
