Volodymyr Yefremenko is a member of the Experimental Cosmology Group. His efforts are focused on the investigation of detector materials and technology relevant to cosmic microwave background experiments.  Current projects include the development of superconducting sensors and their components operating at ultra-low temperatures.
Yefremenko started to work at Argonne as a Visiting scientist. He developed a novel concept for infrared imaging based on optical activation of superconducting micro-bolometers, developed fabrication technology of 90GHz polarization sensitive detector array deployed on South Pole Telescope, investigated superconducting and transport properties of thin films and multilayer structures.
Previously, working at the Institute for Low Temperature Physics and Engineering of National Academy of Science of Ukraine as an Engineer, Senior Scientist and Group Leader, Yefremenko developed and investigated low temperature detectors and systems for different applications.

EDUCATION

M.S.  State diploma in mechanical engineering, Kharkov Aviation Institute (now Zhukovsky National Aerospace University of Ukraine) / Ukraine, 1975
Ph.D. ​“Superconducting bolometric detectors for sub-millimeter wave receivers”, Kharkov Aviation Institute / Ukraine, 1987

AWARDS

ANL Pacesetter Awards
ANL PSE Excellence Award

SELECTED PATENTS AND PABLICATIONS

US Patent # 7,274,019  V. Yefremenko, E. Gordiyenko, V. Pishko, and V. Novosad, ​”METHOD FOR DETECTION AND IMAGING OVER A BROAD SPECTRAL RANGE”.
V. Yefremenko et al., ​“Impact of Electrical Contacts Design and Materials on the Stability of Ti Superconducting Transition Shape”, Journal of Low Temperature Physics”, V.193, Issue 5–6, pp 732–738, 2018.
C. Posada, et al. ​“Fabrication of detector arrays for the SPT-3G receiver.” Journal of Low Temperature Physics, V. 193, no. 5-6,   2018.
J.Ding, et al., ​“Thermal Links and Microstrip Transmission Lines in SPT-3G Bolometers.” Journal of Low Temperature Physics 193, no. 5-6, pp.713-719, 2018.
J. Ding et al., ​“Optimization of Transition Edge Sensor Arrays for Cosmic Microwave Background Observations With the South Pole Telescope,” IEEE Transactions on Applied Superconductivity, vol. 27, no. 4, pp. 1-4, June 2017.
C.M. Posada et al., ​“Large arrays of dual-polarized multichroic TES detectors for CMB measurements with the SPT-3G receiver,” Proc. SPIE 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, 991417, July 2016.
C. L. Chang et al., ​“Low Loss Superconducting Microstrip Development at Argonne National Lab,” in IEEE Transactions on Applied Superconductivity, vol. 25, no. 3, pp. 1-5, June 2015.
V. Yefremenko et al., ​“Design and Fabrication of 90 GHz TES Polarimeter Detectors for the South Pole Telescope,” IEEE Transactions on Applied Superconductivity, vol. 23, no. 3, pp. 2100605-2100605, June 2013.
V. Yefremenko et al., ​“Low Temperature Thermal Transport in Partially Perforated Silicon Nitride Membranes”, Appl. Phys. Letter, 94, 183504, 2009.