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Dr. Udara Saparamadu

Dr. Udara Saparamadu, Postdoctoral Scholar
Materials Science and Engineering
219A, Steidle Building, University Park, PA 16802

Thermal Lab

Education and Professional:

  • Postdoc in Material Science and Engineering, Penn State University, PA, USA (2018-present)
  • Ph.D. in Physics, University of Houston, TX, USA (2018)
  • BS in Physics, University of Peradeniya, Sri Lanka (2013)

Research Interest:

  • High temperature thermoelectric materials and devices, High energy ball milling for material fabrication, Nanostructured materials for Energy Harvesting applications.

Honors and Awards:

  • Collaborated research with German Aerospace Center won the best poster award in 35th International Conference on Thermoelectrics (2016)

Brief Research Summary:

My main research is about high temperature thermoelectric materials and device fabrication for waste heat recovery applications. Currently, my work is mainly focused in half-Heusler thermoelectric materials to design and fabricate high power output thermoelectric modules. Also, I’m focusing on air resistant coatings for these devices to reduce the device degradation at high temperature.  



  • U. Saparamadu, J. Mao, K. Dahal, H. Zhang, F. Tian, S. Song, W. Liu, Z. Ren, “The effect of charge carrier and doping site on thermoelectric properties of Mg2Sn0.75Ge0.25”, Acta Materialia 124, 528-535.
  • J. de Boor*, U. Saparamadu*, J. Mao, K. Dahal, E. Muller, Z. Ren, “Thermoelectric performance of Li doped, p-type Mg2(Ge, Sn) and comparison with Mg2(Si, Sn)”, Acta Materialia 120, 273-280.
  • U. Saparamadu*, J. de Boor*, J. Mao, S. Song, F. Tian, W. Liu, Q. Zhang, G. Chen, Z. Ren, “Optimizing the thermoelectric properties of p-type Mg2Sn0.75Ge0.25 by dopant species”, Acta Materialia 141, 154-162.
  • U. Saparamadu, Chunhua Li, David Broido, Ran He, Hangtian Zhu, Jun Mao, Shaowei Song, Jingyin Sun, Zhifeng Ren, “Improved Thermoelectric Performance of Tellurium by Alloying with a Small Concentration of Selenium to Decrease Lattice Thermal Conductivity”, ACS Applied  Materials and Interfaces 11, 511-516.
  • J. Mao, Y. Wang, H.S. Kim, Z. Liu, U. Saparamadu, F. Tian, K. Dahal, Jingying Sun, Shuao Chen, Weishu Liu, Zhifeng Ren, “High thermoelectric power factor in Cu-Ni alloy originate from potential barrier scattering of twin boundaries”, Nano energy 17, 279-289.

*Equal contribution

Google Scholar: https://scholar.google.com/citations?user=MBdG7-wAAAAJ&hl=en