Asymmetric geometry composites arranged between parallel aligned and interconnected graphene structures for highly efficient thermal rectification

Abstract

A graphene, thermal rectification device, originating in thermal conductivity saltation, can control the direction of flow and velocity of heat.

Enhancing neural differentiation of induced pluripotent stem cells by conductive graphene/silk fibroin films

“…This might be attributed to the enhanced interfacial bonding forces formed between SF and graphene . Moreover, parallelly distributed graphene was able to restrain vertically extended cracks, which also gave rise to enhanced strength and modulus . However, the tensile strength and modulus of G/SF films began to reduce when graphene content was increased to 4% and 8%.…”

High Thermal Effusivity Nanocarbon Materials for Resonant Thermal Energy Harvesting

“…Furthermore, carbon nanomaterials could potentially serve other functionalities to build more advanced thermal energy harvester. For example, many researchers have reported thermal rectification effects in CNT with asymmetric mass loading, [65] triangular reduced graphene oxide paper, [66] suspended monolayer graphene, [63,68] graphene-PEG composite structure, [64] and polydimethylsiloxane-graphite cones. [62] With more improvement in their rectification ratio, [60,61] these thermal diodes could be incorporated to further increase the performance of thermal resonators, as detailed in our recent publication.…”

“…Thermal diodes are devices that only allow heat to flow in one direction (Figure 3E), just like electrical diodes only allow current flow in one direction. [58][59][60][61][62][63][64][65][66][67] In the design of Figure 3F, both diodes face the same direction, so heat is only allowed to enter the device from the left, and can only escape from the right. Therefore we produce a temperature difference that does not change its sign.…”