Enhancing Thermal Transport at Solid-Solid Interfaces
Abstract
(1) Develop an advanced and comprehensive platform based on the atomistic Green~s function (AGF) method to calculate mode-specific interface transmittance with inclusion of anharmonicity and first-principles force-fields. (2) Connect transport simulations with structural simulations systematically to best represent the real interfacial conditions via density functional theory (DFT) calculations. (3) Pioneer a novel experimental technique to probe thermal transport directly at the interfaces.AbstractA major challenge in achieving high performance electronics is their thermal management, which is aggravated by poor thermal transport across solid-solid interfaces along the heat dissipation pathway. Developing energy-efficient heat removal technologies is critical to the performance, reliability, and lifetime of electronic devices. Fundamental understanding of interfacial thermal transport at solid-solid interfaces is essential to guiding the rational design of thermal interfaces with ultralow thermal interface resistance, which will mitigate the heat load and enable revolutionary advances in next-generation electronic devices. In this project, we propose an innovative approach that integrates advanced atomistic-level simulation with powerful transient spectroscopy to fundamentally understand and enhance thermal transport at solid-solid interfaces. More specifically, we will develop a comprehensive platform to calculate mode-dependent phonon transmittance from first-principles with inclusion of anharmonicity. We will also pioneer a new measurement technique to directly probe thermal transport processes directly at the interfaces. Experimental and computational modeling will combine to uncover interfacial thermal transportprocesses in great detail. The outcome of the proposed work is expected to be a major leap in the fundamental understanding of interfacial thermal transport across solid-solid interfaces and, hence, will play a transformative role in revolutionizing cutting-edge electronic systems in the awe-inspiring ships and aircraft of America~s Navy, as well as on its bases.Total funding of $509,306 is requested for the performance period from 06/01/2018- 05/31/2021.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 10, 2018
- Source ID
- N000141812274
Entities
People
- Zhiting Tian
Organizations
- Office of Naval Research
- United States Navy
- Virginia Tech