Harihara Ramamoorthy, Ph.D

อาจารย์

harihara.ra(at)kmitl.ac.th

ประวัติการศึกษา

B.Tech. (Electrical and Electronics Engineering), Vellore Institute of Technology

M.S. (Electrical and Electronics Engineering), University at Buffalo, The State University of New York

Ph.D. (Electrical and Electronics Engineering), University at Buffalo, The State University of New York

ความเชี่ยวชาญ

- Electricity and Magnetism

- Semiconductor Physics

- Electrical circuits and devices

- Magnetic Materials

- Semiconductor Memory Technology

- Measurement and Instrumentation

- Emerging 2D electronic materials (Graphene and TMDs)

- Low-temperature quantum transport

- Thin film growth using PVD, CVD and PECVD methods

- Flexible electronics and sensor technology

- Thermoelectrics and energy harvesting

ผลงานทางวิชาการ

International Journals

[1] J. Nathawat, M. Zhao, CP. Kwan, S. Yin, N. Arabchigavkani, M. Randle, H. Ramamoorthy, G. He, R. Somphonsane, N. Matsumoto, K. Sakanashi, M. Kida, N. Aoki, Z. Jin, Y. Kim, GH. Kim, K. Watanabe, T. Taniguchi, J.P Bird. “Transient Response of h-BN-Encapsulated Graphene Transistors: Signatures of Self-Heating and Hot-Carrier Trapping“ ACS Omega 4, 2, 4082 (2019)

[2] P. Wongjom, W. Thongsamrit, H. Ramamoorthy, S. Chinwong, R. Somphonsane, C. Ruttanapun. “Cost-Effective Experimental Setup for Studies of Spin Seebeck Effect and Electrical Transport in Thermoelectric Materials“ IEEE Transactions on Instrumentation and Measurement (2019)

[3] H. Ramamoorthy & R. Somphonsane. “In-situ current annealing of graphene-metal contacts“. Journal of Physics: Conference Series 1144 (1), 012186 (2018)

[4] H. Ramamoorthy, R. Somphonsane, J. Radice, G. He, J. Nathawat, C. P. Kwan, M. Zhao and J. P. Bird. “Probing Charge Trapping and Joule Heating in Graphene Field-Effect Transistors by Transient Pulsing” Semicon. Sci. Technol. 32, 084005 (2017)

[5] R. Somphonsane, H. Ramamoorthy, G. He, J. Nathawat, C.-P. Kwan, Y.-H. Lee, J. Fransson, and J. P. Bird “Evaluating the Sources of Graphene’s Resistivity Using Differential Conductance” Sci. Rep. 7, 10317 (2017)

[6] G. He, J. Nathawat, C.-P. Kwan, H. Ramamoorthy, R. Somphonsane, M. Zhao, K. Ghosh, U. Singisetti, N. Perea-López, C. Zhou, A.L. Elías, M. Terrones, Y. Gong, X. Zhang, R. Vajtai, P. M. Ajayan, D. K. Ferry & J. P. Bird “Negative Differential Conductance & Hot-Carrier Avalanching in Monolayer WS2 FETs” Sci. Rep. 7, 11256 (2017)

[7] H. Ramamoorthy, R. Somphonsane, J. Radice, G. He, C.-P. Kwan, and J. P. Bird “"Freeing" Graphene from its Substrate: Observing Intrinsic Velocity Saturation with Rapid Electrical Pulsing” Nano Lett. 16, 399–403 (2016)

[8] D. K. Ferry, R. Somphonsone, H. Ramamoorthy, and J. P. Bird, “Energy relaxation of hot carriers in graphene via plasmon interactions” J. Comput. Electron. 15, 144-153 (2016)

[9] G. He, H. Ramamoorthy, C.-P. Kwan, Y.-H. Lee, J. Nathawat, R. Somphonsane, M. Matsunaga, A. Higuchi, N. Aoki, Y. Gong, X. Zhang, R. Vajtai, P. M. Ajayan, and J. P. Bird "Thermally-Assisted Nonvolatile Memory in Monolayer MoS2 Transistors" Nano Lett. 16, 6445-6451 (2016)

[10] B. Liu, R. Akis, D. K. Ferry, G. Bohra, R. Somphonsone, H. Ramamoorthy, and J. P. Bird, “Conductance fluctuations in graphene in the presence of long-range disorder” J. Phys.: Condens. Matter 28, 135302 (2016)

[11] D. K. Ferry, R. Somphonsone, H. Ramamoorthy, and J. P. Bird, “Plasmon-mediated energy relaxation in graphene” Appl. Phys. Lett. 107, 262103 (2015)

[12] G. He, K. Ghosh, U. Singisetti, H. Ramamoorthy, R. Somphonsane, G. Bohra, M. Matsunaga, A. Higuchi, N. Aoki, S. Najmaei, Y. Gong, X. Zhang, R. Vajtai, P. M. Ajayan, and J. P. Bird, “Conduction Mechanisms in CVD-Grown Monolayer MoS2 Transistors: From Variable-Range Hopping to Velocity Saturation” Nano Lett. 15, 5052 (2015)

[13] H. Ramamoorthy, R. Somphonsane, G. He, D. K. Ferry, Y. Ochiai, N. Aoki, and J. P. Bird, "Reversing hot-carrier energy-relaxation in graphene with a magnetic field", Appl. Phys. Lett. 104, 193115 (2014)

[14] R. Somphonsane, H. Ramamoorthy, G. Bohra, G. He, D. K. Ferry, Y. Ochiai, N. Aoki, and J. P. Bird, "Fast energy relaxation of hot carriers near the Dirac point of graphene", Nano Lett. 13, 4305 (2013)