@INPROCEEDINGS{7517721, author={M. H. {Nasr} and C. E. {Green} and P. A. {Kottke} and {Xuchen Zhang} and T. E. {Sarvey} and Y. K. {Joshi} and M. S. {Bakir} and A. G. {Fedorov}}, booktitle={2016 15th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm)}, title={Extreme-microgap (x-µgap) based hotspot thermal management with refrigerant flow boiling}, year={2016}, volume={}, number={}, pages={1466-1476}, keywords={flow visualisation;heat sinks;heat transfer;refrigerants;temperature measurement;thermal management (packaging);thermal resistance measurement;extreme-microgap based hotspot thermal management;refrigerant flow boiling;next generation microprocessors;convective boiling heat transfer;microgap heat sinks;rectangular microgap;thin-film resistive thermometry;heat fluxes;resistive heaters;two-phase flow regimes;wall temperature measurements;flow visualization;pressure drop;thermal resistance measurements;Resistance heating;Thermal resistance;Temperature measurement;Visualization;Heat transfer;Two-phase flow;high heat flux;microcooler;heat sink;convective boiling;flow visualization;flow regime;R134a;pressure drop;thermal resistance}, doi={10.1109/ITHERM.2016.7517721}, ISSN={1087-9870}, month={May},}