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John Kearney

4th Year Undergraduate Student

Project: Unexpected Structural and Electronic Behavior of Sn3N4

Email: kearney@unlv.nevada.edu

research: 

My research involves static high pressure/temperature studies of various materials using laser heated and resistive heated diamond anvil cells (DAC).  Through my work I have carried out experiments in the multi-megabar pressure regime using a DAC.  I have used electrical discharge machining and laser drillers for gasket preparation, and single and triple grating spectrometers for Raman spectroscopy to measure pressure and collect data on samples.  Tin nitride has shown the remarkable behavior of a band gap energy that increases as pressure is increased, and my work on tin nitride has involved setting up an optical absorption system to measure bang gap energies in the visible range of samples at high pressure.

 

National Laboratories: 

  • X-ray diffraction experiments at Argonne National Laboratory Advanced Photon source
  • X-ray absorption spectroscopy experiments at Argonne National Laboratory Advanced Photon Source
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Collaborations with national lab scientists:

  • Collaboration with Dr. Changyong Park from Argonne National Laboratory Advanced Photon Source
  • Collaboration with Dr. Jesse Smith from Argonne National Laboratory Advanced Photon Source

 

Professional schools & workshops:

  • 2015 UNLV Extreme Crystals Weekend workship

 

Awards: 

  • 2016 Russell L. & Brenda Frank Endowed Scholarship
  • 2016 NSF EPSCoR Undergraduate Research Opportunity scholarship

 

Presentations:

  • 2017 Poster presentation at SSAA annual review conference