{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/14668"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/14668","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Thermal conductivity anisotropy in molybdenum disulfide thin films","abstract":"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.","abstract_html":"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.","abstract_has_math":false,"creators":["McLaren, Ryan C."],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["King, William P."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2010,"date_issued":"2010-01-06T16:20:53Z","date_published":"2010-01-06T16:20:53Z","updated_at":"2026-07-22T22:25:08Z","subjects":["molybdenum disulfide","thermal conductivity","thin film","anisotropy"],"languages":["en"],"rights":["Copyright 2009 Ryan C. McLaren"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/14668","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["King, William P."]},{"key":"dc:creator","label":"Author","values":["McLaren, Ryan C."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2010-01-06T16:20:53Z","2009-12"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["molybdenum disulfide","thermal conductivity","thin film","anisotropy"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2009 Ryan C. 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