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oai:www.ideals.illinois.edu:2142/14668 2023-07-10 col_2142_5131 col_2142_14787 com_2142_5130 com_2142_9630 com_2142_234

King, William P. King, William P. McLaren, Ryan C. 2010-01-06T16:20:53Z 2010-01-06T16:20:53Z 2010-01-06T16:20:53Z This study was completed to determine the anisotropy in molybdenum disulfide, MoS2, thin films. The hexagonal crystal structure of MoS2 and recent results on tungsten diselenide, with a similar structure, lead to the belief that MoS2 may exhibit ultralow thermal conductivity. Thermal conductivities were measured using the time-domain thermoreflectance method. MoS2 samples were prepared with different crystallographic orientations relative to the substrate by magnetron sputtering and ion-beam-assisted deposition. The thermal conductivity of MoS2 was measured as low as 0.2 W/m-K, very low for a fully dense solid and 3 times lower than in the amorphous phase. Although thermal conductivity was not strongly dependent on the orientation of the crystal structure, deposition parameters can be used to control thermal conductivity. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2009-12-07T15:32:33Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 McLaren_Ryan.pdf: 5519525 bytes, checksum: 353f338401b9819aaf00689a2c85fb98 (MD5) McLaren_Ryan.doc: 6418944 bytes, checksum: 1ca2c19eccf3a437c6c622e96c9eaf73 (MD5) Made available in DSpace on 2010-01-06T16:20:53Z (GMT). No. of bitstreams: 3 license.txt: 4062 bytes, checksum: e43975f6048a6f0f82b639993a0e4125 (MD5) McLaren_Ryan.pdf: 5519525 bytes, checksum: 353f338401b9819aaf00689a2c85fb98 (MD5) McLaren_Ryan.doc: 6418944 bytes, checksum: 1ca2c19eccf3a437c6c622e96c9eaf73 (MD5) http://hdl.handle.net/2142/14668 en Copyright 2009 Ryan C. McLaren molybdenum disulfide thermal conductivity thin film anisotropy Thermal conductivity anisotropy in molybdenum disulfide thin films 2009-12 Mechanical Sci & Engineering 1917 Mechanical Engineering 0133 University of Illinois at Urbana-Champaign Thesis M.S. MS:Mechanical Engineerng -UIUC 10KS0133MS