Dr. Ullom is recognized for his exceptional breakthroughs in applied superconductivity and cryogenic engineering. These breakthroughs include the demonstration of the first practical on-chip quantum refrigerators, the development of new superconducting x-ray and gamma-ray spectrometers that provide new capabilities both for industrial materials analysis and nuclear materials accounting, and the development and commercialization of an important cryogenic system. He has the rare combination of the creativity to generate innovative new ideas in applied superconductivity and cryogenics, the capability to fully develop and demonstrate them in the laboratory, the vision to apply them to important, high impact problems, and the persistence to pursue them all the way to practical implementation and commercialization.