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Title: Substrate thermal conductivity controls the ability to manufacture microstructures via laser-induced direct write

In controlling the thermal properties of the surrounding environment, we provide insight into the underlying mechanisms driving the widely used laser direct write method for additive manufacturing. In this study, we find that the onset of silver nitrate reduction for the formation of direct write structures directly corresponds to the calculated steady-state temperature rises associated with both continuous wave and high-repetition rate, ultrafast pulsed laser systems. Furthermore, varying the geometry of the heat affected zone, which is controllable based on in-plane thermal diffusion in the substrate, and laser power, allows for control of the written geometries without any prior substrate preparation. In conclusion, these findings allow for the advance of rapid manufacturing of micro- and nanoscale structures with minimal material constraints through consideration of the laser-controllable thermal transport in ionic liquid/substrate media.
Authors:
 [1] ;  [2] ; ORCiD logo [2] ; ORCiD logo [1] ;  [3] ;  [4]
  1. Univ. of Virginia, Charlottesville, VA (United States). Department of Materials Science and Engineering
  2. Univ. of Virginia, Charlottesville, VA (United States). Department of Mechanical and Aerospace Engineering
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Advanced Materials Laboratory
  4. Univ. of Virginia, Charlottesville, VA (United States). Department of Materials Science and Engineering, Department of Mechanical and Aerospace Engineering and Department of Physics
Publication Date:
Report Number(s):
SAND-2018-1917J
Journal ID: ISSN 0003-6951; 660850
Grant/Contract Number:
AC04-94AL85000; NA0003525
Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 112; Journal Issue: 5; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1426810

Tomko, John A., Olson, David H., Braun, Jeffrey L., Kelliher, Andrew P., Kaehr, Bryan, and Hopkins, Patrick E.. Substrate thermal conductivity controls the ability to manufacture microstructures via laser-induced direct write. United States: N. p., Web. doi:10.1063/1.5016073.
Tomko, John A., Olson, David H., Braun, Jeffrey L., Kelliher, Andrew P., Kaehr, Bryan, & Hopkins, Patrick E.. Substrate thermal conductivity controls the ability to manufacture microstructures via laser-induced direct write. United States. doi:10.1063/1.5016073.
Tomko, John A., Olson, David H., Braun, Jeffrey L., Kelliher, Andrew P., Kaehr, Bryan, and Hopkins, Patrick E.. 2018. "Substrate thermal conductivity controls the ability to manufacture microstructures via laser-induced direct write". United States. doi:10.1063/1.5016073.
@article{osti_1426810,
title = {Substrate thermal conductivity controls the ability to manufacture microstructures via laser-induced direct write},
author = {Tomko, John A. and Olson, David H. and Braun, Jeffrey L. and Kelliher, Andrew P. and Kaehr, Bryan and Hopkins, Patrick E.},
abstractNote = {In controlling the thermal properties of the surrounding environment, we provide insight into the underlying mechanisms driving the widely used laser direct write method for additive manufacturing. In this study, we find that the onset of silver nitrate reduction for the formation of direct write structures directly corresponds to the calculated steady-state temperature rises associated with both continuous wave and high-repetition rate, ultrafast pulsed laser systems. Furthermore, varying the geometry of the heat affected zone, which is controllable based on in-plane thermal diffusion in the substrate, and laser power, allows for control of the written geometries without any prior substrate preparation. In conclusion, these findings allow for the advance of rapid manufacturing of micro- and nanoscale structures with minimal material constraints through consideration of the laser-controllable thermal transport in ionic liquid/substrate media.},
doi = {10.1063/1.5016073},
journal = {Applied Physics Letters},
number = 5,
volume = 112,
place = {United States},
year = {2018},
month = {1}
}

Works referenced in this record:

Two-photon polymerization initiators for three-dimensional optical data storage and microfabrication
journal, March 1999
  • Cumpston, Brian H.; Ananthavel, Sundaravel P.; Barlow, Stephen
  • Nature, Vol. 398, Issue 6722, p. 51-54
  • DOI: 10.1038/17989