Heat, charge, and mass are fundamental energy carrying modes relevant to nearly all dynamic properties of interest in engineering, physics, and modern energy technologies. Here, I will discuss the design and understanding of transport properties in complex nanoscale systems where the dimensional constraints are changed systematically to reveal fundamental principles of transport. The first part of this talk will focus on heat and charge transport in polymeric and hybrid nanomaterials, revealing the physical origins of scaling laws for charge transport in these materials. I will also briefly highlight strong deviations from the Wiedemann-Franz law in materials with electronic phase transitions, and possible applications of this phenomenology for novel devices exhibiting, for example, thermal rectification and thermal memristance.
The second portion of my talk will highlight other complementary research directions in my group, by briefly highlighting recent results in mass transport in the context of selective gas transport membranes, hydrogen storage, and water purification/selective ion removal.
Speaker: Jefferey Urban, Lawrence Berkeley National Lab
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