Dr Omprakash Muthusamy
Post Doctoral Research Assistant - Vacuum Thin Films
Dr. Omprakash Muthusamy joined Wrexham University as a Postdoctoral Research Assistant at the Optic Technology Centre, St. Asaph campus, in June 2024. He completed his M.Sc. in Materials Science at Anna University, Chennai, Tamil Nadu, India. He then pursued a Ph.D. in thermoelectrics at Shizuoka University, Japan.
He held several postdoctoral positions in Japan at institutions such as Shizuoka University, Toyota Technological Institute, and Tokyo Metropolitan University. His research primarily focused on enhancing the thermoelectric performance of Si-Ge alloys and 2D materials. He has published several articles, including collaborations with other researchers. With extensive experience in various experimental techniques, he has worked on crystal growth, Si-Ge nanopowder synthesis, and Si-Ge thin film deposition through MBE and PVD.
Additionally, Dr. Omprakash Muthusamy spent two years at ASM International, a semiconductor company in Japan, specializing in Plasma Enhanced Atomic Layer Deposition (PEALD) and Plasma Enhanced Chemical Vapor Deposition (PECVD) for metal oxide and dielectric coatings. His current research focuses on optical coatings, including anti-reflection (AR) coatings, high-reflection (HR) coatings, beam splitters, notch filters, low-pass filters, and long-pass filters, among others.
Publications
| Year | Publication | Type |
|---|---|---|
| 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 |
Peer Reviewed Journal |
| 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. |
Peer Reviewed Journal |
| 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. |
Peer Reviewed Journal |
| 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. |
Peer Reviewed Journal |
| 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. |
Peer Reviewed Journal |
| 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 |
Peer Reviewed Journal |
| 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 |
Peer Reviewed Journal |
| 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 |
Peer Reviewed Journal |
| 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. |
Peer Reviewed Journal |
| 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 |
Peer Reviewed Journal |
| 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. |
Peer Reviewed Journal |
| 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 |
Peer Reviewed Journal |
| 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 |
Peer Reviewed Journal |
| 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. |
Peer Reviewed Journal |
| 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 |
Peer Reviewed Journal |
| 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 |
Peer Reviewed Journal |
| 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. |
Peer Reviewed Journal |
| 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. |
Peer Reviewed Journal |
| 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 |
Peer Reviewed Journal |
| 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. |
Peer Reviewed Journal |
| 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. |
Peer Reviewed Journal |