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Title: Optically enhanced patternable photosensitivity via oxygen excitation

Abstract

A method is disclosed for performing a three dimensional (3D) printing process. The method involves generating a primary light beam having a wavelength sufficient to initiate polymerization of a photoresin, and patterning the primary light beam into a patterned primary beam. The patterned primary beam may be directed toward an ultraviolet (UV) or visible light sensitive photoresin to initiate polymerization of select areas of the photoresin. The photoresin may be illuminated with a secondary light beam having a wavelength of about 765 nm to stimulate triplet oxygen into singlet oxygen, to thus control oxygen inhibition in additional areas bordering the select areas, to control polymerization inhibition in the additional areas bordering the select areas.

Inventors:
;
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1650965
Patent Number(s):
10668708
Application Number:
15/277,645
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS
B - PERFORMING OPERATIONS B33 - ADDITIVE MANUFACTURING TECHNOLOGY B33Y - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 09/27/2016
Country of Publication:
United States
Language:
English

Citation Formats

Hensleigh, Ryan, and Duoss, Eric B. Optically enhanced patternable photosensitivity via oxygen excitation. United States: N. p., 2020. Web.
Hensleigh, Ryan, & Duoss, Eric B. Optically enhanced patternable photosensitivity via oxygen excitation. United States.
Hensleigh, Ryan, and Duoss, Eric B. Tue . "Optically enhanced patternable photosensitivity via oxygen excitation". United States. https://www.osti.gov/servlets/purl/1650965.
@article{osti_1650965,
title = {Optically enhanced patternable photosensitivity via oxygen excitation},
author = {Hensleigh, Ryan and Duoss, Eric B.},
abstractNote = {A method is disclosed for performing a three dimensional (3D) printing process. The method involves generating a primary light beam having a wavelength sufficient to initiate polymerization of a photoresin, and patterning the primary light beam into a patterned primary beam. The patterned primary beam may be directed toward an ultraviolet (UV) or visible light sensitive photoresin to initiate polymerization of select areas of the photoresin. The photoresin may be illuminated with a secondary light beam having a wavelength of about 765 nm to stimulate triplet oxygen into singlet oxygen, to thus control oxygen inhibition in additional areas bordering the select areas, to control polymerization inhibition in the additional areas bordering the select areas.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {6}
}

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Works referenced in this record:

Resin composition for stereolithography
patent, December 1998


Process for adjusting the sensitivity to radiation of photopolymerizable compositions
patent, November 1996