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Title: Lithographic Printing Via Two-Photon Polymerization of Engineered Foams

Abstract

Understanding deuterium-tritium mix in capsules is critical to achieving fusion within inertial confined fusion experiments. One method of understanding how the mix of hydrogen fuels can be controlled is by creating various structured deuterated foams and filling the capsule with liquid tritium. Historically, these materials have been a stochastically structured gas-blown foam. Later, to improve the uniformity of this material, pore formers have been used which are then chemically removed, leaving behind a foam of monodisperse voids. However, this technique is still imperfect in that fragments of the pore templating particles may not be completely removed and the void distribution may not be uniform over the size scale of the capsule. Recently, advances in three-dimensional printing suggest that it can be used to create microlattices and capsule walls in one single print. Demonstrated in this paper are proof-of-concept microlattices produced using two-photon polymerization with submicrometer resolution of various structures as well as a microlattice-containing capsule. Finally, with this technology, complete control of the mixing structure is possible, amenable to modeling and easily modified for tailored target design.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1435517
Report Number(s):
LA-UR-17-24923
Journal ID: ISSN 1536-1055; TRN: US1900062
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Fusion Science and Technology
Additional Journal Information:
Journal Volume: 73; Journal Issue: 2; Journal ID: ISSN 1536-1055
Publisher:
American Nuclear Society
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 42 ENGINEERING; engineered foams; two-photon polymerization; additive manufacturing

Citation Formats

Herman, Matthew J., Peterson, Dominic, Henderson, Kevin, Cardenas, Tana, Hamilton, Christopher E., Oertel, John, and Patterson, Brian M. Lithographic Printing Via Two-Photon Polymerization of Engineered Foams. United States: N. p., 2017. Web. doi:10.1080/15361055.2017.1387454.
Herman, Matthew J., Peterson, Dominic, Henderson, Kevin, Cardenas, Tana, Hamilton, Christopher E., Oertel, John, & Patterson, Brian M. Lithographic Printing Via Two-Photon Polymerization of Engineered Foams. United States. doi:10.1080/15361055.2017.1387454.
Herman, Matthew J., Peterson, Dominic, Henderson, Kevin, Cardenas, Tana, Hamilton, Christopher E., Oertel, John, and Patterson, Brian M. Wed . "Lithographic Printing Via Two-Photon Polymerization of Engineered Foams". United States. doi:10.1080/15361055.2017.1387454. https://www.osti.gov/servlets/purl/1435517.
@article{osti_1435517,
title = {Lithographic Printing Via Two-Photon Polymerization of Engineered Foams},
author = {Herman, Matthew J. and Peterson, Dominic and Henderson, Kevin and Cardenas, Tana and Hamilton, Christopher E. and Oertel, John and Patterson, Brian M.},
abstractNote = {Understanding deuterium-tritium mix in capsules is critical to achieving fusion within inertial confined fusion experiments. One method of understanding how the mix of hydrogen fuels can be controlled is by creating various structured deuterated foams and filling the capsule with liquid tritium. Historically, these materials have been a stochastically structured gas-blown foam. Later, to improve the uniformity of this material, pore formers have been used which are then chemically removed, leaving behind a foam of monodisperse voids. However, this technique is still imperfect in that fragments of the pore templating particles may not be completely removed and the void distribution may not be uniform over the size scale of the capsule. Recently, advances in three-dimensional printing suggest that it can be used to create microlattices and capsule walls in one single print. Demonstrated in this paper are proof-of-concept microlattices produced using two-photon polymerization with submicrometer resolution of various structures as well as a microlattice-containing capsule. Finally, with this technology, complete control of the mixing structure is possible, amenable to modeling and easily modified for tailored target design.},
doi = {10.1080/15361055.2017.1387454},
journal = {Fusion Science and Technology},
number = 2,
volume = 73,
place = {United States},
year = {2017},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

Fig. 1 Fig. 1: Reconstructed micro–X-ray tomographic slice of a DVB foam–filled capsule. The stochastic structure of the foam is fully apparent. Additionally, the seam between the two hemispheric foam pieces is visible from approximately 2 to 7 o’clock.

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.