Browsing by Author "James Madison University"
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- Banner from James Madison UniversityJames Madison University (Digital Library and Archives, University Libraries, Virginia Tech, 2012-03-12)
- Banner from James Madison UniversityJames Madison University (Digital Library and Archives, University Libraries, Virginia Tech, 2012-03-12)
- Banner from James Madison UniversityJames Madison University (Digital Library and Archives, University Libraries, Virginia Tech, 2012-03-12)
- Banner from James Madison UniversityJames Madison University (Digital Library and Archives, University Libraries, Virginia Tech, 2012-03-12)
- Banner from James Madison UniversityJames Madison University (Digital Library and Archives, University Libraries, Virginia Tech, 2012-03-12)
- Banner from James Madison University - courtesy of Sign Pro of HarrisonburgJames Madison University (Digital Library and Archives, University Libraries, Virginia Tech, 2012-03-12)
- Card from James Madison UniversityJames Madison University (Digital Library and Archives, University Libraries, Virginia Tech, 2012-03-12)
- Cover of Madison: the magazine of James Madison University, Summer 2007, Vol.30, No. 3James Madison University (Digital Library and Archives, University Libraries, Virginia Tech, 2012-03-12)
- High-performance carbon nanotube coatings for high-power laser radiometryRamadurai, Krishna; Cromer, Christopher L.; Lewis, Laurence A.; Hurst, Katherine E.; Dillon, Anne C.; Mahajan, Roop L.; Lehman, John H. (American Institute of Physics, 2008-01-01)Radiometry for the next generation of high-efficiency, high-power industrial lasers requires thermal management at optical power levels exceeding 10 kW. Laser damage and thermal transport present fundamental challenges for laser radiometry in support of common manufacturing processes, such as welding, cutting, ablation, or vaporization. To address this growing need for radiometry at extremely high power densities, we demonstrate multiwalled carbon nanotube (MWCNT) coatings with damage thresholds exceeding 15 000 W/cm(2) and absorption efficiencies over 90% at 1.06 mu m. This result demonstrates specific design advantages not possible with other contemporary high-power laser coatings. Furthermore, the results demonstrate a performance difference between MWCNTs and single-walled carbon nanotube coatings, which is attributed to the lower net thermal resistance of the MWCNT coatings. We explore the behavior of carbon nanotubes at two laser wavelengths (1.06 and 10.6 mu m) and also evaluate the optical-absorption efficiency and bulk properties of the coatings. (c) 2008 American Institute of Physics.
- Poster from James Madison UniversityJames Madison University (Digital Library and Archives, University Libraries, Virginia Tech, 2012-03-12)
- Sculpture of "Duke Dog" from James Madison UniversityJames Madison University (Digital Library and Archives, University Libraries, Virginia Tech, 2012-03-12)