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Ranga Dias

  • Assistant Professor, Department of Mechanical Engineering

PhD, Washington State University, 2013

220 Hopeman
(585) 276-4112
rdias@rochester.edu

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Ranga Dias joins the University of Rochester, school of engineering and applied science as assistant professor after a postdoctoral fellowship in the Department of Physics at Harvard University, where he investigated the quantum phenomena in hydrogens at extreme conditions.

 

Dias is an experimental extreme condensed matter physicist with a multidisciplinary research background in materials science and engineering. His research focuses on materials at extreme pressure and temperature conditions, where materials alter their properties in many fundamental ways. Thus, they provide exciting opportunities for one to discover new materials, novel phenomena, and exotic states of matter that are not present at the ambient conditions. His main interests are high temperature superconductivity, magnetism, and superfluidity in the vicinity of quantum phase transitions. His research efforts not only address fundamental understanding but are also directed towards utilizing high pressure and temperature conditions to understand chemical processes and interactions to synthesize novel advanced materials, such as high energy density materials, superhard solids, and quantum materials.

 

During his three-year postdoctoral appointment at Lyman laboratory of physics at Harvard University working under the mentorship of Prof. Isaac Silvera, Dias’ new experimental breakthrough led them to discover solid metallic hydrogen, the holy grail of extreme condensed matter physics. V . L. Ginzburg listed this as the third most important problem in physics in his Nobel lecture, and it is predicted to have exotic properties, such as room temperature superconductivity and superfluidity (if it is a liquid) and metastability. Prior to this discovery, Dias discovered a new class of highly conducting metallic and superconducting polymers during his Ph.D. research at Washington State University. Dias completed his undergraduate studies at the University of Colombo in Sri Lanka.

 

Dias is an internationally recognized scientist in the field of high pressure physics, and he has received several research and teaching awards. Dias has published papers in journals such as Science, Physical Review Letters, the Proceedings of the National Academy of Sciences, and Nature. His work has also been reported in popular press, e.g. New York Times, BBC, NBC, NPR, Physics Today, New Scientist, Chemistry World, ScienceNews, Nature News and Views, and APS Physics Central.

Representative Publications

  1. Ranga P. Dias, Isaac F. Silvera
“Observation of the Wigner-Huntington Transition to Solid Metallic Hydrogen” Science 355, 715-718 (2017)
  2. Ranga P. Dias, Ori Noked, Isaac F. Silvera
“New Phases and Dissociation-Recombination of Hydrogen Deuteride to 3.4 Mbar” Phys. Rev. Lett. 116, 145501 (2016)
  3. Ranga P. Dias, Minseob Kim, Choong-Shik Yoo “Structural transitions and metallization in dense GeS” Phys. Rev. B. 93, 104107 (2016)  
  4. Ranga P. Dias, Minseob Kim, Yasuo Ohishi, Takehiro Matsuoka, Jing Chen, Choong-Shik Yoo, “Pressure-Induced Transformations of Dense Carbonyl Sulfide to Singly Bonded Amorphous Metallic Solid”
Nature Sci.Rep. 6, 31594 (2016) R.D. and M.K. contributed equally as co-first authors 

  5. Ranga P. Dias, Choong-Shik Yoo, Viktor V. Struzhkin, Minseob Kim, Takaki Muramatsu, Takahiro Matsuoka, Yasuo Ohishi, Stainislav Sinogeikin 
“Superconductivity in highly disordered dense carbon disulfide”
Proc. Natl. Acad. Sci. USA 110, 11720-11724 (2013) 

  6. Ranga P. Dias, Choong-Shik Yoo, Minseob Kim, John S. Tse “Insulator-metal transition of highly compressed carbon disulfide” Phys. Rev. B. 84, 144104-1-6 (2011)
  7. Alistair J. Davidson, Ranga P. Dias, Dana M. Dattelbaum, Choong-Shik Yoo
“Stubborn” triaminotrinitrobenzene: Unusuallchemical stability of a molecular solid to 150 GPa” J. Chem. Phys. 135, 174507 (2011)