This volume of Annual Review Of Heat Transfer (ARHT) is devoted to the work of some of the past recipients of Bergles-Rohsenow Young Investigator Awards. Topics covered include phonon transport in two-dimensional and organic-inorganic hybrid materials, synchrotron-based characterization of materials, evaporation in nanostructures, adsorption systems for automobile climate control and many more. Papers in this volume reflect the significant evolution of the field of heat transfer over the past few decades. It has expanded to include more studies on materials. These materials and associated applications call for more understanding of heat transfer at micro- /nanoscale, and they in turn are enabling new heat transfer solutions and systems. There is ample room from both ends of the spectrum for us to pursue fundamental studies to improve the materials and application of these materials to develop innovative systems.