Ambient-pressure silica aerogel films Metadata

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Title

  • Main Title Ambient-pressure silica aerogel films

Creator

  • Author: Prakash, Sai S.
    Creator Type: Personal
    Creator Info: New Mexico Univ., Albuquerque, NM (United States)
  • Author: Brinker, C. Jeffrey
    Creator Type: Personal
    Creator Info: Sandia National Labs., Albuquerque, NM (United States)
  • Author: Hurd, Alan J.
    Creator Type: Personal
    Creator Info: Sandia National Labs., Albuquerque, NM (United States)

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: USDOE, Washington, DC (United States)

Publisher

  • Name: Sandia National Laboratories
    Place of Publication: Albuquerque, New Mexico
    Additional Info: Sandia National Labs., Albuquerque, NM (United States)

Date

  • Creation: 1994-12-31

Language

  • English

Description

  • Content Description: Very highly porous (aerogel) silica films with refractive index in the range 1.006--1.05 (equivalent porosity 98.5--88%) were prepared by an ambient-pressure process. It was shown earlier using in situ ellipsometric imaging that the high porosity of these films was mainly attributable to the dilation or `springback` of the film during the final stage of drying. This finding was irrefutably reconfirmed by visually observing a `springback` of >500% using environmental scanning electron microscopy (ESEM). Ellipsometry and ESEM also established the near cent per cent reversibility of aerogel film deformation during solvent intake and drying. Film thickness profile measurements (near the drying line) for the aerogel, xerogel and pure solvent cases are presented from imaging ellipsometry. The thickness of these films (crack-free) were controlled in the range 0.1-3.5 {mu}m independent of refractive index.
  • Physical Description: 7 p.

Subject

  • Keyword: Drying
  • STI Subject Categories: 36 Materials Science
  • Keyword: Expansion
  • Keyword: Silica Gel
  • Keyword: Porous Materials
  • Keyword: Deformation

Source

  • Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 28 Nov - 9 Dec 1994

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE95008161
  • Report No.: SAND--95-0350C
  • Report No.: CONF-941144--87
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 31676
  • Archival Resource Key: ark:/67531/metadc681629

Note

  • Display Note: OSTI as DE95008161
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