Sol-gel replicated optics made from single point diamond turned masters exhibit fractal surface roughness Metadata

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  • Main Title Sol-gel replicated optics made from single point diamond turned masters exhibit fractal surface roughness


  • Author: Bernacki, B.E.
    Creator Type: Personal
  • Author: Miller, A.C. Jr.
    Creator Type: Personal
  • Author: Evans, B.M. III
    Creator Type: Personal
    Creator Info: Oak Ridge National Lab., TN (United States)
  • Author: Moreshead, W.V.
    Creator Type: Personal
  • Author: Nogues, J.L.R.
    Creator Type: Personal
    Creator Info: GELTECH, Inc., Alachua, FL (United States)


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


  • Name: Oak Ridge National Laboratory
    Place of Publication: Tennessee
    Additional Info: Oak Ridge National Lab., TN (United States)


  • Creation: 1996-05-01


  • English


  • Content Description: Deterministic optics manufacturing, notably single point diamond turning (SPDT) has matured such that the current generation of machines is capable of producing refractive and reflective optics for the visible wavelength region that are quite acceptable for many applications. However, spiral tool marks are still produced that result in unwanted diffractive scattering from grating-like features having a spatial frequency determined by the machine feed, tool radius, and other influences such as vibration and material removal effects. Such regular artifacts are the characteristic of deterministic manufacturing methods such as SPDT. The authors present some initial findings suggesting that fractal, or non-deterministic surfaces can be produced by SPDT through sol-gel replication. The key is the large isotropic shrinkage that occurs through monolithic sol-gel replication (a factor of 2.5) that results in all features, including tooling marks, being reduced by that amount. The large shrinkage itself would be a laudable-enough feature of the replication process. However, by an as-yet-not understood manner, the replication process itself seems to alter the roughness character of the replicated surface such that it appears to be fractal when analyzed using contact profilometry and the power spectrum approach.
  • Physical Description: 4 p.


  • Keyword: Machine Tools
  • Keyword: Visible Radiation
  • Keyword: Optical Systems
  • Keyword: Casting Molds
  • Keyword: Sol-Gel Process
  • Keyword: Manufacturing
  • Keyword: Surface Properties
  • STI Subject Categories: 44 Instrumentation, Including Nuclear And Particle Detectors


  • Conference: Optical Society of America (OSA) meeting on integrated photonics research, Boston, MA (United States), 29 Apr - 3 May 1996


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


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article


  • Text


  • Other: DE96009740
  • Report No.: CONF-960493--4
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 231636
  • Archival Resource Key: ark:/67531/metadc669212


  • Display Note: OSTI as DE96009740