Substrate-supported thermometry platform for nanomaterials like graphene, nanotubes, and nanowires

Abstract

We demonstrate a substrate-supported thermometry platform to measure thermal conduction in nanomaterials like graphene, with no need to suspend them. We use three-dimensional simulations and careful uncertainty analysis to optimize the platform geometry and to obtain the sample thermal conductivity. The lowest thermal sheet conductance that can be sensed with <50% error is ~25 nW/K at room temperature, indicating applicability of this platform to graphene or polymer thin films, nanotube or nanowire arrays, even a single Si nanowire. The platform can also be extended to plastic substrates, and could find wide applicability in circumstances where fabrication challenges and low yield associated with suspended platforms must be avoided.

with Supplementary Material

References in corpus (6)

• Thermal properties of graphene: Fundamentals and applications
• Energy Dissipation and Transport in Nanoscale Devices
• Thermal Conductivity and Phonon Transport in Suspended Few-Layer Hexagonal Boron Nitride
• Ballistic to diffusive crossover of heat flow in graphene ribbons
• Role of Joule Heating on Current Saturation and Transient Behavior of Graphene Transistors
• Imaging Dissipation and Hot Spots in Carbon Nanotube Network Transistors