Surface tension mediated conversion of light to work

Okawa, David; Pastine, Stefan J; Zettl, Alexander K; Frechet, Jean M. J

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Title: Surface tension mediated conversion of light to work

Abstract

Disclosed are a method and apparatus for converting light energy to mechanical energy by modification of surface tension on a supporting fluid. The apparatus comprises an object which may be formed as a composite object comprising a support matrix and a highly light absorptive material. The support matrix may comprise a silicon polymer. The highly light absorptive material may comprise vertically aligned carbon nanotubes (VANTs) embedded in the support matrix. The composite object is supported on a fluid. By exposing the highly light absorptive material to light, heat is generated, which changes the surface tension of the composite object, causing it to move physically within the fluid.

Inventors:: Okawa, David; Pastine, Stefan J; Zettl, Alexander K; Frechet, Jean M. J

Issue Date:: Tue Dec 02 00:00:00 EST 2014

Research Org.:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1164706

Patent Number(s):: 8899044

Application Number:: 13/069,131

Assignee:: The Regents of the University of California (Oakland, CA)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

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B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
B82Y15/00 - Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors
B82Y30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
Y02E10/46 - Conversion of thermal power into mechanical power, e.g. Rankine, Stirling solar thermal engines

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DOE Contract Number:: AC02-05CH11231

Resource Type:: Patent

Resource Relation:: Patent File Date: 2011 Mar 22

Country of Publication:: United States

Language:: English

Subject:: 30 DIRECT ENERGY CONVERSION; 14 SOLAR ENERGY; 77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats


                    Okawa, David, Pastine, Stefan J, Zettl, Alexander K, and Frechet, Jean M. J. Surface tension mediated conversion of light to work.  United States: N. p., 2014. 
        Web.

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                    Okawa, David, Pastine, Stefan J, Zettl, Alexander K, & Frechet, Jean M. J. Surface tension mediated conversion of light to work.  United States.

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                    Okawa, David, Pastine, Stefan J, Zettl, Alexander K, and Frechet, Jean M. J. Tue .  
        "Surface tension mediated conversion of light to work".  United States.  https://www.osti.gov/servlets/purl/1164706.

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@article{osti_1164706,

  title        = {Surface tension mediated conversion of light to work},

  author       = {Okawa, David and Pastine, Stefan J and Zettl, Alexander K and Frechet, Jean M. J},

  abstractNote = {Disclosed are a method and apparatus for converting light energy to mechanical energy by modification of surface tension on a supporting fluid. The apparatus comprises an object which may be formed as a composite object comprising a support matrix and a highly light absorptive material. The support matrix may comprise a silicon polymer. The highly light absorptive material may comprise vertically aligned carbon nanotubes (VANTs) embedded in the support matrix. The composite object is supported on a fluid. By exposing the highly light absorptive material to light, heat is generated, which changes the surface tension of the composite object, causing it to move physically within the fluid.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Dec 02 00:00:00 EST 2014},

  month        = {Tue Dec 02 00:00:00 EST 2014}

}

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Works referenced in this record:

Power generating apparatus using radiant energy
patent, August 1983

Paller, Marc S.
US Patent Document 4,397,150
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4397150

Cast - away bobber
patent-application, May 2005

Schumacher, James F.; Schumacher, Kathleen S.
US Patent Application 10/703609; 20050097806
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20050097806