Kris Bertness is a group leader in the Applied Physics Division of NIST in Boulder, Colorado. She has been at NIST for over 25 years, working mostly on semiconductor metrology and crystal growth, with a focus on nanostructures. Before coming to NIST, she worked at the National Renewable Energy Laboratory in Golden, Colorado, developing high-efficiency solar cells, one of which set at new world record for efficiency. She also worked early in her career at the industrial research center for Varian Associates, which is where she first learned semiconductor crystal growth. Kris has a Ph.D. in physics from Stanford University and a B.A. in physics from Oberlin College. She is an avid gardener and amateur singer, and volunteers in local and international charitable endeavors.