Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

2020 Bronze Medal Award


The group is recognized for developing a novel nanoscale light emitting diode (LED) device with enough intensity for practical applications in LED-based display technology, atomic scale imaging and semiconductor characterization.  Through their rigorous study of composition and polarity in gallium nitride nanostructures, they were able to dispel long-held misconceptions in the field and develop new methods to optimize the electrical conductivity and crystalline structure.  Their innovations are being transferred to industry through multiple active collaborations.


Matt Brubaker

Mechanical Engineer
Physical Measurement Laboratory

Alexana Roshko

Materials Research Engineer
Physical Measurement Laboratory

Todd Harvey

Physical Measurement Laboratory

Kris Bertness

Supervisory Physicist
Physical Measurement Laboratory