High Thermal Conductivity 2D Materials: From Theory and Engineering to Applications

Abstract

The channel/gate length of transistors is getting close to the physical limit. [1] To meet the requirements of chip performance, advanced design technologies are utilized to bring higher Transistors are getting close to their physical limitation, and complex chip design technologies have made the hotspot problem more serious. Graphene and hBN, as representative 2D semi-metal and dielectric materials, possess excellent thermal conductivities. Intrinsic 2D materials, 2D film materials, and 2D composite materials have been investigated, showing great potential for next-generation thermal-management materials. There are products that have already been commercialized based on graphene and hBN, but many companies seem to be sitting on the fence, and the obstacles toward implementation of these materials need to be specified. Here, high thermal conductivity 2D materials from theory and engineering to applications are reviewed, aiming to provide a comprehensive summary of the current state of the art of this field in order to give an overview and future prospects in application, manufacturing, and commercialization. From the theoretical perspective, the impact factors and development path of 2D materials for thermal dissipation and the engineering aspect of structural design are presented. The prospects and challenges are also tackled, expressing an objective view about future opportunities to build 2D-based heat-dissipation systems.

Applications of Graphene in Five Senses, Nervous System, and Artificial Muscles

“…203 Besides, the nanoelectromechanical system can be employed for detecting a gentle mass addition induced change in vibration frequency of graphene based resonators. 213 Because of the good thermal conductivity, 214 graphene has become a thermal management material 215 in smartphones. The graphene-molecule interaction can be visualized by molecular dynamic simulation for trace-level gas detection.…”

Intrinsic auxeticity and mechanical anisotropy of Si9C15 siligraphene

“…Since then, many new 2D materials such as transition metal dichalcogenides, 2 silicene, 3 hexagonal boron nitride (hBN), 4 and black phosphorus 5 have been synthesized by the aforementioned mechanical exfoliation method and some other synthesis methods such as electrochemical intercalation, ball milling, electrochemical intercalation, chemical vapor deposition, physical vapor deposition, to name a few. 6,7 Compared to their bulk counterparts, 2D materials possess many superior material properties, such as significant quantum effects, 8 an extremely high surface area-to-volume ratio, 9 extra-large electrical and thermal conductivities, 10,11 and extraordinary mechanical strength. 12 Inspired by the remarkable properties discovered in 2D materials as well as the development of synthesis techniques at the nanoscale, much effort has been made recently to explore the possible existence of some other 2D materials.…”

Thermoelectric properties of X3N2O2 (X = Hf, Zr) MXene monolayers: a first-principles study

“…Two-dimensional (2D) materials are extensively researched due to their unique properties, such as high surface area, 1 high conductivity, 2 and tunable band gaps, 3 which differ from their bulk counterparts. These properties make them promising materials for a wide range of applications, including electronics, 4 energy storage, 5 catalysis, 6 and sensors.…”