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Title: Surface contouring by controlled application of processing fluid using Marangoni effect

Abstract

An apparatus and method for modifying the surface of an object by contacting said surface with a liquid processing solution using the liquid applicator geometry and Marangoni effect (surface tension gradient-driven flow) to define and confine the dimensions of the wetted zone on said object surface. In particular, the method and apparatus involve contouring or figuring the surface of an object using an etchant solution as the wetting fluid and using realtime metrology (e.g. interferometry) to control the placement and dwell time of this wetted zone locally on the surface of said object, thereby removing material from the surface of the object in a controlled manner. One demonstrated manifestation is in the deterministic optical figuring of thin glasses by wet chemical etching using a buffered hydrofluoric acid solution and Marangoni effect.

Inventors:
 [1];  [2]
  1. (Livermore, CA)
  2. (Oakley, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
921307
Patent Number(s):
6,555,017
Application Number:
09/687,775
Assignee:
The Regents of the University of Caliofornia (Oakland, CA) OAK
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Rushford, Michael C., and Britten, Jerald A. Surface contouring by controlled application of processing fluid using Marangoni effect. United States: N. p., 2003. Web.
Rushford, Michael C., & Britten, Jerald A. Surface contouring by controlled application of processing fluid using Marangoni effect. United States.
Rushford, Michael C., and Britten, Jerald A. Tue . "Surface contouring by controlled application of processing fluid using Marangoni effect". United States. https://www.osti.gov/servlets/purl/921307.
@article{osti_921307,
title = {Surface contouring by controlled application of processing fluid using Marangoni effect},
author = {Rushford, Michael C. and Britten, Jerald A.},
abstractNote = {An apparatus and method for modifying the surface of an object by contacting said surface with a liquid processing solution using the liquid applicator geometry and Marangoni effect (surface tension gradient-driven flow) to define and confine the dimensions of the wetted zone on said object surface. In particular, the method and apparatus involve contouring or figuring the surface of an object using an etchant solution as the wetting fluid and using realtime metrology (e.g. interferometry) to control the placement and dwell time of this wetted zone locally on the surface of said object, thereby removing material from the surface of the object in a controlled manner. One demonstrated manifestation is in the deterministic optical figuring of thin glasses by wet chemical etching using a buffered hydrofluoric acid solution and Marangoni effect.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {4}
}

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