Dr Omprakash Muthusamy
Cynorthwyydd Ymchwil Ôl-ddoethurol - Ffilmiau Tenau Gwactod
Ymunodd Dr Ompraksh Muthusamy gyda Phrifysgol Wrecsam fel Cynorthwy-ydd Ymchwil Ôl-ddoethurol yn y Ganolfan Dechnoleg Optig, campws Llaneurgain, ym mis Mehefin 2024. Cwblhaodd ei MSc mewn Gwyddor Deunyddiau, ym Mhrifysgol Anna, Chennai, Tamil Nadu, India. Yna ymgymerodd â PhD mewn thermoelectrigau ym Mhrifysgol Shizuoka, Siapan.
Daliodd sawl swydd ôl-ddoethurol yn Siapan mewn sefydliadau megis Prifysgol Shizuoka, Sefydliad Technegol Toyota, a Phrifysgol Fetropolitanaidd Tokyo. Roedd ei waith ymchwil yn canolbwyntio’n bennaf ar wella perfformiad thermoelectrig o aloiau Si-Ge a deunyddiau 2D. Mae wedi cyhoeddi nifer o erthyglau, gan gynnwys cydweithrediadau gydag ymchwilwyr eraill. Gyda phrofiad eang mewn amrywiol dechnegau arbrofol, mae wedi gweithio ar dyfu crisialau, synthesis nanobowdr Si-Ge, a dyddodiad haen denau Si-Ge drwy MBE a PVD.
Yn ogystal, treuliodd Dr Omprakash Muthusamy ddwy flynedd yn ASM International, cwmni lled-ddargludyddion yn Siapan, yn arbenigo mewn Dyddodiad Haen Atomig Wedi'i Fwyhau gan Blasma (PEALD) a Dyddodiad Anwedd Cemegol Wedi’ Wella gan Blasma (PECVD) ar gyfer gorchuddiadau ocisd metal a deuelectrig. Mae ei waith ymchwil cyfredol yn canolbwyntio ar orchuddion optegol , gan gynnwys gorchuddion gwrth-adlewyrchol (AR), gorchuddion adlewyrchu uchel *HR), torwyr pelydryn, hidlwyr ‘low-pass’, a hidlwyr ‘long-pass’, ymysg eraill.
Cyhoeddiadau
| Blwyddyn | Cyhoeddiad | Math |
|---|---|---|
| 2024 | Structural study of crystalline and amorphous phases of Si 0.65 Ge 0.35 B x ( x=0, 0.01, 0.05, 0.10) alloy prepared by long-time mechanical alloying, JOURNAL OF NON-CRYSTALLINE SOLIDS, 631. [DOI] Hiroi, Satoshi;Ohara, Koji;Muthusamy, Omprakash;Nakajima, Hiroshi;Mori, Shigeo;Takeuchi, Tsunehiro |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2022 | Interface effect of graphene oxide in MoS2 layered nanosheets for thermoelectric application, Journal of Materials Science: Materials in Electronics, 33. [DOI] Kristy, A. Periyanayaga;Harish, S.;Omprakash, M.;Nisha, K. D.;Ikeda, H.;Navaneethan, M. |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2022 | Anomalous dependence of thermoelectric parameters on carrier concentration and electronic structure in Mn-substituted Fe2CrAl Heusler alloy, PHILOSOPHICAL MAGAZINE, 102. [DOI] Yadav, Kavita;Singh, Saurabh;Muthuswamy, Omprakash;Takeuchi, Tsunehiro;Mukherjee, K. |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2022 | Unravelling the phonon scattering mechanism in half-Heusler alloys ZrCo1-x Ir x Sb (x=0, 0.1 and 0.25), Journal of Physics Condensed Matter, 34. [DOI] Yadav, Kavita;Singh, Saurabh;Muthuswamy, Omprakash;Takeuchi, Tsunehiro;Mukherjee, K. |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2020 | Enhanced seebeck coefficient and low thermal conductivity of Cu2SexTe1-x solid solutions via minority carrier blocking and interfacial effects, Journal of Alloys and Compounds, 835. [DOI] Kavirajan, S.;Archana, J.;Harish, S.;Omprakash, M.;Navaneethan, M.;Ponnusamy, S.;Muthamizhchelvan, C.;Inatomi, Y.;Shimomura, M.;Hayakawa, Y. |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2020 | Investigation of Thermoelectric Properties of Ag2SxSe1-x (x=0.0, 0.2 and 0.4), JOURNAL OF ELECTRONIC MATERIALS, 49. [DOI] Singh, Saurabh;Hirata, Keisuke;Byeon, Dogyun;Matsunaga, Takuya;Muthusamy, Omprakash;Ghodke, Swapnil;Adachi, Masahiro;Yamamoto, Yoshiyuki;Matsunami, Masaharu;Takeuchi, Tsunehiro |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2020 | Enhancement of the Thermoelectric Performance of Si-Ge Nanocomposites Containing a Small Amount of Au and Optimization of Boron Doping, JOURNAL OF ELECTRONIC MATERIALS, 49. [DOI] Muthusamy, Omprakash;Ghodke, Swapnil;Singh, Saurabh;Delime-Codrin, Kevin;Nishino, Shunsuke;Adachi, Masahiro;Yamamoto, Yoshiyuki;Matsunami, Masaharu;Harish, Santhanakrishnan;Shimomura, Masaru;Takeuchi, Tsunehiro |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2019 | Au and B co-doped p-type Si-Ge nanocomposites possessing ZT;=;1.63 synthesized by ball milling and low-temperature sintering, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 58. [DOI] Omprakash, Muthusamy;Delime-Codrin, Kevin;Ghodke, Swapnil;Singh, Saurabh;Nishino, Shunsuke;Adachi, Masahiro;Yamamoto, Yoshiyuki;Matsunami, Masaharu;Harish, Santhanakrishnan;Shimomura, Masaru;Takeuchi, Tsunehiro |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2019 | Ultra-low thermal conductivity via interfacial phonon scattering in PbTe hoppercubes/PbTeO3 microrods for thermoelectric applications, Journal of Alloys and Compounds, 799. [DOI] Kavirajan, S.;Archana, J.;Omprakash, M.;Harish, S.;Navaneethan, M.;Ponnusamy, S.;Muthamizhchelvan, C.;Shimomura, M.;Hayakawa, Y. |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2019 | Large figure of merit ZT=1.88 at 873 K achieved with nanostructured Si0.55Ge0.35(P0.10Fe0.01), APPLIED PHYSICS EXPRESS, 12. [DOI] Delime-Codrin, Kevin;Omprakash, Muthusamy;Ghodke, Swapnil;Sobota, Robert;Adachi, Masahiro;Kiyama, Makoto;Matsuura, Takashi;Yamamoto, Yoshiyuki;Matsunami, Masaharu;Takeuchi, Tsunehiro |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2019 | Fabrication of ultrathin poly-crystalline SiGe-on-insulator layer for thermoelectric applications, JOURNAL OF PHYSICS COMMUNICATIONS, 3. [DOI] Goyal, C. P.;Omprakash, M.;Navaneethan, M.;Takeuchi, T.;Shimura, Y.;Shimomura, M.;Ponnusamy, S.;Hayakawa, Y.;Ikeda, H. |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2018 | Low Thermal Conductivity of Bulk Amorphous Si1-x Gex Containing Nano-Sized Crystalline Particles Synthesized by Ball-Milling Process, JOURNAL OF ELECTRONIC MATERIALS, 47. [DOI] Muthusamy, Omprakash;Nishino, Shunsuke;Ghodke, Swapnil;Inukai, Manabu;Sobota, Robert;Adachi, Masahiro;Kiyama, Makato;Yamamoto, Yoshiyuki;Takeuchi, Tsunehiro;Santhanakrishnan, Harish;Ikeda, Hiroya;Hayakawa, Yasuhiro |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2018 | Thermoelectric Properties of Nanograined Si-Ge-Au Thin Films Grown by Molecular Beam Deposition, JOURNAL OF ELECTRONIC MATERIALS, 47. [DOI] Nishino, Shunsuke;Ekino, Satoshi;Inukai, Manabu;Omprakash, Muthusamy;Adachi, Masahiro;Kiyama, Makoto;Yamamoto, Yoshiyuki;Takeuchi, Tsunehiro |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2018 | Development of amorphous bulk Al-Mn-Si for nano-structured thermoelectric materials, MATERIALS TODAY-PROCEEDINGS. Adachi, Masahiro;Fujii, Shunsuke;Kiyama, Makoto;Yamamoto, Yoshiyuki;Nishino, Shunsuke;Omprakash, Muthusamy;Yamamoto, Akio;Makino, Akihiro;Takeuchi, Tsunehiro |
Conference Publication |
| 2017 | Enhancement of power factor by energy filtering effect in hierarchical BiSbTe3 nanostructures for thermoelectric applications, Applied Surface Science, 418. [DOI] Sabarinathan, M.;Omprakash, M.;Harish, S.;Navaneethan, M.;Archana, J.;Ponnusamy, S.;Ikeda, H.;Takeuchi, T.;Muthamizhchelvan, C.;Hayakawa, Y. |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2017 | Phonon-Drag Contribution to Seebeck Coefficient in P-Type Si, Ge and Si1-xGex, IEICE TRANSACTIONS ON ELECTRONICS, E100C. [DOI] Manimuthu, Veerappan;Omprakash, Muthusamy;Arivanandhan, Mukannan;Salleh, Faiz;Hayakawa, Yasuhiro;Ikeda, Hiroya |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2017 | Morphology dependent thermal conductivity of ZnO nanostructures prepared via a green approach, Journal of Alloys and Compounds, 695. [DOI] Veluswamy, Pandiyarasan;Sathiyamoorthy, Suhasini;Chowdary, Kalari Hanuman;Muthusamy, Omprakash;Krishnamoorthy, Karthikeyan;Takeuchi, Tsunehiro;Ikeda, Hiroya |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2017 | Thermoelectric Properties of p-Type Cr Doped MnSiγ Prepared by Liquid Quenching Technique, MATERIALS TRANSACTIONS, 58. [DOI] Ghodke, Swapnil;Yamamoto, A.;Omprakash, M.;Ikuta, H.;Takeuchi, T. |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2016 | Vertical gradient solution growth of N-type Si0.73Ge0.27 bulk crystals with homogeneous composition and its thermoelectric properties, JOURNAL OF CRYSTAL GROWTH, 442. [DOI] Omprakash, M.;Arivanandhan, M.;Sabarinathan, M.;Koyama, T.;Momose, Y.;Ikeda, H.;Tatsuoka, H.;Aswal, D. K.;Bhattacharya, S.;Inatomi, Y.;Hayakawa, Y. |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2015 | High Power Factor of Ga-Doped Compositionally Homogeneous Articlet pubs.acs.org/crystal Si0.68Ge0.32 Bulk Crystal Grown by the Vertical Temperature Gradient Freezing Method, Crystal Growth and Design, 15. [DOI] Omprakash, Muthusamy;Arivanandhan, Mukannan;Koyama, Tadanobu;Momose, Yoshimi;Ikeda, Hiroya;Tatsuoka, Hirokazu;Aswal, Dinesh K.;Bhattacharya, Shovit;Okano, Yasunori;Ozawa, Tetsuo;Inatomi, Yuko;Babu, Sridharan Moorthy;Hayakawa, Yasuhiro |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2014 | Analysis of dissolution and growth process of SiGe alloy semiconductor based on penetrated X-ray intensities, Journal of Alloys and Compounds, 590. [DOI] Omprakash, M.;Arivanandhan, M.;Kumar, R. Arun;Morii, H.;Aoki, T.;Koyama, T.;Momose, Y.;Ikeda, H.;Tatsuoka, H.;Okano, Y.;Ozawa, T.;Babu, S. Moorthy;Inatomi, Y.;Hayakawa, Y. |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |
| 2013 | A comparative analysis on growth aspects and characterization of novel benzophenone derivatives, Materials Chemistry and Physics, 141. [DOI] Natarajan, V.;Omprakash, M.;Arivanandhan, M.;Hayakawa, Y. |
Cyfnodolyn a Adolygwyd gan Gymheiriaid |