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Title: Fast photo-switchable surfaces for boiling heat transfer applications

Abstract

Several milligrams of the ruthenium-centered organometallic complex, ruthenium bis-4,4 Prime -di(thiomethyl)-2,2 Prime -bipyridine, mono-2 -(2-pyridyl)-1,3-oxathiane ([Ru{l_brace}(HS-CH{sub 2}){sub 2}-bpy{r_brace}{sub 2}{l_brace}pox{r_brace}](PF{sub 6}){sub 2}) were synthesized and used to produce a self assembled monolayer film on a gold substrate. X-ray photoelectron spectroscopy analysis of the film detected the presence of bound thiolate, which is an indication of a chemisorbed film. Water contact angle measurements were performed before and after 5 min of visible light irradiation using an ozone-free 1000 W Xe(Hg) arc source with a 425-680 nm long pass mirror. The contact angle changed from 52 Degree-Sign pre-irradiation (hydrophilic state) to 95 Degree-Sign post-irradiation (hydrophobic state).

Authors:
; ;  [1]; ;  [2]; ;  [3]
  1. Air Force Research Laboratory, Materials and Manufacturing Directorate, 2941 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433 (United States)
  2. Universal Technology Corporation, 1270 North Fairfield Road, Dayton, Ohio 45532 (United States)
  3. University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469 (United States)
Publication Date:
OSTI Identifier:
22089504
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 101; Journal Issue: 19; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BIPYRIDINES; BOILING; GOLD; HEAT TRANSFER; IRRADIATION; ORGANOMETALLIC COMPOUNDS; PHYSICAL RADIATION EFFECTS; RUTHENIUM COMPLEXES; SUBSTRATES; SURFACES; THIN FILMS; VISIBLE RADIATION; WATER; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Hunter, C. N., Glavin, N. R., Voevodin, A. A., Turner, D. B., Check, M. H., Jespersen, M. L., and Borton, P. T. Fast photo-switchable surfaces for boiling heat transfer applications. United States: N. p., 2012. Web. doi:10.1063/1.4766345.
Hunter, C. N., Glavin, N. R., Voevodin, A. A., Turner, D. B., Check, M. H., Jespersen, M. L., & Borton, P. T. Fast photo-switchable surfaces for boiling heat transfer applications. United States. doi:10.1063/1.4766345.
Hunter, C. N., Glavin, N. R., Voevodin, A. A., Turner, D. B., Check, M. H., Jespersen, M. L., and Borton, P. T. Mon . "Fast photo-switchable surfaces for boiling heat transfer applications". United States. doi:10.1063/1.4766345.
@article{osti_22089504,
title = {Fast photo-switchable surfaces for boiling heat transfer applications},
author = {Hunter, C. N. and Glavin, N. R. and Voevodin, A. A. and Turner, D. B. and Check, M. H. and Jespersen, M. L. and Borton, P. T.},
abstractNote = {Several milligrams of the ruthenium-centered organometallic complex, ruthenium bis-4,4 Prime -di(thiomethyl)-2,2 Prime -bipyridine, mono-2 -(2-pyridyl)-1,3-oxathiane ([Ru{l_brace}(HS-CH{sub 2}){sub 2}-bpy{r_brace}{sub 2}{l_brace}pox{r_brace}](PF{sub 6}){sub 2}) were synthesized and used to produce a self assembled monolayer film on a gold substrate. X-ray photoelectron spectroscopy analysis of the film detected the presence of bound thiolate, which is an indication of a chemisorbed film. Water contact angle measurements were performed before and after 5 min of visible light irradiation using an ozone-free 1000 W Xe(Hg) arc source with a 425-680 nm long pass mirror. The contact angle changed from 52 Degree-Sign pre-irradiation (hydrophilic state) to 95 Degree-Sign post-irradiation (hydrophobic state).},
doi = {10.1063/1.4766345},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 19,
volume = 101,
place = {United States},
year = {2012},
month = {11}
}