U.S. Department of EnergyOffice of Scientific and Technical Information
Forced convection and transport effects during hyperbaric laser chemical vapor deposition
Abstract
This work explores mass transport processes during HP-LCYD, including the transverse forced-flow of precursor gases through a nozzle to enhance fiber growth rates. The use of laser trapping and suspension of nano-scale particles in the precursor flow is also described, providing insights into the nature of the gas flow, including jetting from the fiber tip and thermodiffusion processes near the reaction zone. The effects of differing molecular-weight buffer gases is also explored in conjunction with the Soret effect, and it is found that nucleation at the deposit surface (and homogeneous nucleation in the gas phase) can be enhanced/ retarded, depending on the buffer gas molecular weight. To demonstrate that extensive microstructures can be grown simultaneously, three-dimensional fiber arrays are also grown in-parallel using diffractive optics--without delatory effects from neighboring reaction sites.
- Authors:
-
- Los Alamos National Laboratory
- UPPSALA UNIV
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 956470
- Report Number(s):
- LA-UR-09-00055; LA-UR-09-55
TRN: US201013%%179
- DOE Contract Number:
- AC52-06NA25396
- Resource Type:
- Journal Article
- Journal Name:
- Applied Physics A
- Additional Journal Information:
- Journal Name: Applied Physics A
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; CHEMICAL VAPOR DEPOSITION; FORCED CONVECTION; GAS FLOW; LASERS; MOLECULAR WEIGHT; THERMAL DIFFUSION; TRANSPORT
Citation Formats
Maxwell, James L, Chavez, Craig A, Espinoza, Miguel, Black, Marcie, Maskaly, Karlene, and Boman, Mats. Forced convection and transport effects during hyperbaric laser chemical vapor deposition. United States: N. p., 2009.
Web.
Maxwell, James L, Chavez, Craig A, Espinoza, Miguel, Black, Marcie, Maskaly, Karlene, & Boman, Mats. Forced convection and transport effects during hyperbaric laser chemical vapor deposition. United States.
Maxwell, James L, Chavez, Craig A, Espinoza, Miguel, Black, Marcie, Maskaly, Karlene, and Boman, Mats. 2009.
"Forced convection and transport effects during hyperbaric laser chemical vapor deposition". United States. https://www.osti.gov/servlets/purl/956470.
@article{osti_956470,
title = {Forced convection and transport effects during hyperbaric laser chemical vapor deposition},
author = {Maxwell, James L and Chavez, Craig A and Espinoza, Miguel and Black, Marcie and Maskaly, Karlene and Boman, Mats},
abstractNote = {This work explores mass transport processes during HP-LCYD, including the transverse forced-flow of precursor gases through a nozzle to enhance fiber growth rates. The use of laser trapping and suspension of nano-scale particles in the precursor flow is also described, providing insights into the nature of the gas flow, including jetting from the fiber tip and thermodiffusion processes near the reaction zone. The effects of differing molecular-weight buffer gases is also explored in conjunction with the Soret effect, and it is found that nucleation at the deposit surface (and homogeneous nucleation in the gas phase) can be enhanced/ retarded, depending on the buffer gas molecular weight. To demonstrate that extensive microstructures can be grown simultaneously, three-dimensional fiber arrays are also grown in-parallel using diffractive optics--without delatory effects from neighboring reaction sites.},
doi = {},
url = {https://www.osti.gov/biblio/956470},
journal = {Applied Physics A},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2009},
month = {Thu Jan 01 00:00:00 EST 2009}
}
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