Laser-Focused Atomic Deposition

The ability to fabricate nanometer-sized structures that are stable in air has the potential to contribute significantly to the advancement of new nanotechnologies and our understanding of nanoscale systems. Laser light can be used to control the motion of atoms on a nanoscopic scale. Chromium atoms...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1993-11, Vol.262 (5135), p.877-880
Main Authors: McClelland, J. J., Scholten, R. E., Palm, E. C., Celotta, R. J.
Format: Article
Language:English
Subjects:
360601 - Other Materials- Preparation & Manufacture
ATOMIC BEAMS
ATOMS
Atoms & subatomic particles
BEAMS
CHROMIUM
Collimation
DEPOSITION
Electric fields
ELEMENTS
Energy
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Innovations
Kinetics
Laser beams
Laser cooling
Lasers
Lithography
Lithography (Printing)
Manufacturing
MATERIALS SCIENCE
METALS
Nanotechnology
Optical elements, devices, and systems
Optics
Physics
Silicon
Standing waves
Trajectories
TRANSITION ELEMENTS
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Summary:The ability to fabricate nanometer-sized structures that are stable in air has the potential to contribute significantly to the advancement of new nanotechnologies and our understanding of nanoscale systems. Laser light can be used to control the motion of atoms on a nanoscopic scale. Chromium atoms were focused by a standing-wave laser field as they deposited onto a silicon substrate. The resulting nanostructure consisted of a series of narrow lines covering 0.4 millimeter by 1 millimeter. Atomic force microscopy measurements showed a line width of 65 ± 6 nanometers, a spacing of 212.78 nanometers, and a height of 34 ± 10 nanometers. The observed line widths and shapes are compared with the predictions of a semiclassical atom optical model.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.262.5135.877