Show simple item record

dc.contributorVirginia Tech. Engineering Science and Mechanics Departmenten_US
dc.contributorVirginia Tech. Department of Mechanical Engineeringen_US
dc.contributorVirginia Tech. Institute for Critical Technology and Applied Science (ICTAS)en_US
dc.contributorUniversity of Colorado, Boulder. Department of Mechanical Engineeringen_US
dc.contributorNational Institute of Standards and Technology (U.S.)en_US
dc.contributorNational Renewable Energy Laboratory (U.S.)en_US
dc.contributor.authorRamadurai, Krishnaen_US
dc.contributor.authorCromer, Christopher L.en_US
dc.contributor.authorDillon, Anne C.en_US
dc.contributor.authorMahajan, Roop L.en_US
dc.contributor.authorLehman, John H.en_US
dc.date.accessioned2015-06-01T16:10:46Z
dc.date.available2015-06-01T16:10:46Z
dc.date.issued2009-05-01
dc.identifier.citationRamadurai, Krishna, Cromer, Christopher L., Dillon, Anne C., Mahajan, Roop L., Lehman, John H. (2009). Raman and electron microscopy analysis of carbon nanotubes exposed to high power laser irradiance. Journal of Applied Physics, 105(9). doi: 10.1063/1.3116165en_US
dc.identifier.issn0021-8979en_US
dc.identifier.urihttp://hdl.handle.net/10919/52878
dc.description.abstractHigh power laser radiometry requires efficient and damage-resistant detectors. The current study explores the evolving nature of carbon nanotube coatings for such detectors upon their exposure to incrementally increasing laser power levels. Electron microscopy images along with the D-band to G-band intensity ratios from the Raman spectra from eight irradiance levels are used to evaluate changes before and after the exposure. Electron microscopy images of the exposed multiwalled carbon nanotubes revealed the formation of intermittent pockets of moundlike structures at high power densities exceeding 11 kW/cm(2). Raman spectroscopy measurements also demonstrated higher values for the ratio of the D-band intensity to that of the G-band, suggesting the possible transformation of nanotubes into structurally different forms of carbon. Exposure to a sample of single-walled nanotubes did not demonstrate the evolution of structural changes, which could be due in part to the higher irradiance levels relative to the damage threshold, employed in the experiment. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3116165]en_US
dc.format.extent7 pagesen_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.publisherAmerican Institute of Physicsen_US
dc.subjectCarbon nanotubesen_US
dc.subjectIrradianceen_US
dc.subjectCarbonen_US
dc.subjectMetallic coatingsen_US
dc.subjectRaman spectraen_US
dc.titleRaman and electron microscopy analysis of carbon nanotubes exposed to high power laser irradianceen_US
dc.typeArticle - Refereeden_US
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/jap/105/9/10.1063/1.3116165en_US
dc.date.accessed2015-04-24en_US
dc.title.serialJournal of Applied Physicsen_US
dc.identifier.doihttps://doi.org/10.1063/1.3116165
dc.type.dcmitypeTexten_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record