A novel method for thermal conductivity measurement of two dimensional materials
buir.advisor | Kasırga, Talip Serkan | |
dc.contributor.author | Çakıroğlu, Onur | |
dc.date.accessioned | 2019-09-17T09:05:28Z | |
dc.date.available | 2019-09-17T09:05:28Z | |
dc.date.copyright | 2019-09 | |
dc.date.issued | 2019-09 | |
dc.date.submitted | 2019-09-12 | |
dc.description | Cataloged from PDF version of article. | en_US |
dc.description | Thesis (M.S.): Bilkent University, Department of Physics, İhsan Doğramacı Bilkent University, 2019. | en_US |
dc.description | Includes bibliographical references (leaves 54-61). | en_US |
dc.description.abstract | Thermal conductivity is a quantity which governs the heat transfer in a material. After increasing importance of efficiency in power generation systems and cooling mechanisms in micro-structures, many measurement methods have been developed to explore the thermal conductivity in micro and nano-sized materials. However, complexity in experimental setups, difficulties in the fabrication of devices required for measurements, and lacking exact solutions to thermal equations limit the usability of the methods to a class of materials. It is particularly challenging to study atomically thin metallic materials. To tackle this challenge, we have developed a new thermal conductivity measurement method based on the temperature dependent electrical resistance change and analyzed our method analytically and numerically by finite element method. We applied our method to 2H-TaS2 and found thermal conductivity as 9.55 1.27 W/m.K. Thermal conductivity value of TaS2, a metallic transition metal dichalcogenide was measured for the first time. This is supported by Wiedemann-Franz law and thermal conductivity of similar materials such as 2H-TaSe2 and 1T-TaS2. The method can be applied to semiconducting thin materials as well and is superior to other methods in various ways. | en_US |
dc.description.provenance | Submitted by Betül Özen (ozen@bilkent.edu.tr) on 2019-09-17T09:05:28Z No. of bitstreams: 1 10292555.pdf: 17602170 bytes, checksum: 1759cf917432f85b50802d3d38e687d7 (MD5) | en |
dc.description.provenance | Made available in DSpace on 2019-09-17T09:05:28Z (GMT). No. of bitstreams: 1 10292555.pdf: 17602170 bytes, checksum: 1759cf917432f85b50802d3d38e687d7 (MD5) Previous issue date: 2019-09 | en |
dc.description.statementofresponsibility | by Onur Çakıroğlu | en_US |
dc.embargo.release | 2020-03-12 | |
dc.format.extent | xvi, 65 leaves : illustrations (some color), charts (some color) ; 30 cm. | en_US |
dc.identifier.itemid | B122028 | |
dc.identifier.uri | http://hdl.handle.net/11693/52438 | |
dc.language.iso | English | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Thermal conductivity | en_US |
dc.subject | 2D materials | en_US |
dc.subject | Temperature dependent resistance change | en_US |
dc.subject | Finite element method | en_US |
dc.subject | Heat equation | en_US |
dc.title | A novel method for thermal conductivity measurement of two dimensional materials | en_US |
dc.title.alternative | İki boyutlu malzemelerin termal iletkenliklerinin ölçümü için yeni yöntem | en_US |
dc.type | Thesis | en_US |
thesis.degree.discipline | Physics | |
thesis.degree.grantor | Bilkent University | |
thesis.degree.level | Master's | |
thesis.degree.name | MS (Master of Science) |