Final Report: Nanoscale Cluster Assembly on Compliant Substrates: A New Route to Epitaxy and Nanosctructure Synthesis

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From our work at the University of Minnesota prior to 2000, we knew that buffer-layer-assisted growth could be used to produce abrupt interfaces where reactions were constrained by the fact that particles derived from tens to millions of atoms were brought into contact with substrates that ranged from GaAs(110) to BiSrCaCuO superconductors. In situ scanning tunneling microscopy had demonstrated that the particles increased in size with the thickness of the buffer layer, and we postulated that buffer desorption somehow ‘tossed the particles around’ so that aggregation was possible. Through access to transmission electron microscopy in the MRL at the University ... continued below

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7 pages/151KB

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Weaver, John, H. June 13, 2006.

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Description

From our work at the University of Minnesota prior to 2000, we knew that buffer-layer-assisted growth could be used to produce abrupt interfaces where reactions were constrained by the fact that particles derived from tens to millions of atoms were brought into contact with substrates that ranged from GaAs(110) to BiSrCaCuO superconductors. In situ scanning tunneling microscopy had demonstrated that the particles increased in size with the thickness of the buffer layer, and we postulated that buffer desorption somehow ‘tossed the particles around’ so that aggregation was possible. Through access to transmission electron microscopy in the MRL at the University of Illinois, we have been able to determine the distribution of particles delivered to amorphous carbon as a function of buffer thickness, buffer material, particle material, and warm up rate so as to reveal the physics underlying diffusion, aggregation, and coalescence. Significantly, this enhanced understanding makes it possible to design experiments that produce sizes and distributions of nanoparticles of a very wide range of materials.

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7 pages/151KB

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  • Report No.: DOE/ER/45944-FR.UIUC.A8523
  • Grant Number: FG02-01ER45944
  • DOI: 10.2172/885433 | External Link
  • Office of Scientific & Technical Information Report Number: 885433
  • Archival Resource Key: ark:/67531/metadc876404

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • June 13, 2006

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 7, 2016, 1:45 p.m.

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Weaver, John, H. Final Report: Nanoscale Cluster Assembly on Compliant Substrates: A New Route to Epitaxy and Nanosctructure Synthesis, report, June 13, 2006; United States. (digital.library.unt.edu/ark:/67531/metadc876404/: accessed November 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.