Sustainable Energy Science and Engineering Laboratory (SESEL) pursuits the research interests on fundamental understandings of the thermofluid sciences and engineering aiming at developing novel energy transport, conversion, and storage systems for a clean and sustainable energy future. The development of the sustainable energy systems is the one of the greatest challenges, and solutions to this require innovative approaches. SESEL approaches are designing micro/nanostructured systems for the efficient energy conversion/transport/storage systems using the fundamentals of thermofluid sciences and electrochemistry, and emerging computational methodology and micro/nanotechnologies for desired functionalities. The research projects are related to the fundamental challenges with a wide range of emerging thermal, energy, and environmental systems. These include advanced thermal management, waste heat recovery, fuel cells, advanced rechargeable batteries, CO2 sequestration, and bio-medical systems. The long term goal is to elucidate the fundamental behaviors of principal energy carriers for innovative sustainable energy and environmental systems.