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Thermal transport at sub-micron scales differs substantially from that at normal length scales. Physical laws for heat transfer, such as Fourier's law for heat conduction, fail when the mean free path of energy carriers becomes comparable to the length scales of interest. This occurs in modern microelectronic devices, where for example, channel dimensions, now below 100 nm in length, are comparable to the mean free path of phonons in silicon at room temperature. Research in the nanoscale thermal transport area addresses novel physics at small length and time scales and novel technologies that exploit this class of physics.
Learn more about nanoscale thermo transport from the resources available on this site, listed below.
Truncated Levy model for TDTR
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20 Feb 2017 | Tools | Contributor(s): Amr Mohammed, Ali Shakouri
Simulate the transient thermal response of materials probed using optical pump probe experiment (TDTR)
Fundamentals of Phonon Transport Modeling L1: Introduction
04 Jan 2017 | Presentation Materials | Contributor(s): Alan McGaughey, Xiulin Ruan
Part of the 2016 IMECE Tutorial: Fundamentals of Phonon Transport Modeling: Formulation, Implementation, and Applications.
Fundamentals of Phonon Transport Modeling L2: MD Simulation, Green Kubo, Direct Method
04 Jan 2017 | Presentation Materials | Contributor(s): Xiulin Ruan, Alan McGaughey
Fundamentals of Phonon Transport Modeling L3: Harmonic Lattice Dynamics, Spectral Methods
Fundamentals of Phonon Transport Modeling L4: Anharmonic Lattice dynamics, First Principles
Fundamentals of Phonon Transport Modeling L6: Phonon-Electron Coupling and Non-equilibrium
Radiative Heat Transfer at the Nanoscale
12 Dec 2016 | Online Presentations | Contributor(s): Pramod Reddy
In this talk, I will describe ongoing efforts in our group to experimentally elucidate nanoscale heat radiation. Specifically, I will present our recent experimental work where we have addressed...
Heat Under the Microscope:
Uncovering the Microscopic Processes that Govern
04 Oct 2016 | Online Presentations | Contributor(s): Austin Minnich
n this talk, I will describe our efforts to uncover the microscopic processes that govern thermal transport by phonons. In particular, I will describe how our advances in computation and...
Practice Your Scales!
Thermal and Energy Nanomaterials for Fast Processes
17 Aug 2016 | Online Presentations | Contributor(s): Timothy S Fisher
NCN Undergraduate Research Experience Program - 2016
E304 L7.2.2: Nanoscale Heat Transfer - Application: Thermoelectric Generators
06 May 2016 | Online Presentations | Contributor(s): Mehmet Cevdet Ozturk
Thermal Conductivity of III-V Semiconductor Superlattices
25 Jan 2016 | Online Presentations | Contributor(s): Song Mei, Zlatan Aksamija, Irena Knezevic
IWCE 2015 presentation. An InGaAs/InAlAs superlattice (SL) on an InP substrate is the mainstream material system for mid- IR quantum cascade lasers (QCL). The thermal conductivity tensor of...
Reproducing results of "Thermal transport in SiGe superlattice thin films and nanowires"
27 Mar 2015 | Papers | Contributor(s): Alejandro Strachan, Jonathan Mark Dunn
In this document we show how to reproduce results in the paper "Thermal transport in SiGe superlattice thin films and nanowires", Keng-hua Lin, and Alejandro Strachan Physical...
Thermoreflectance Imaging, Copper Via Reliability and Non- Local Thermal Transport
05 Mar 2015 | Online Presentations | Contributor(s): Ali Shakouri
ECE 595E Lecture 18: FEM for Thermal Transport
01 Mar 2013 | Online Presentations | Contributor(s): Peter Bermel
Recap from Monday
Thermal transfer overview
Thermal Transport Across Interfaces
23 Aug 2011 | Courses | Contributor(s): Timothy S Fisher
These lectures provide a theoretical development of the transport of
thermal energy by conduction in nanomaterials, in which material
interfaces typically dominate transport. The physical nature...
Lecture 9: Introduction to Phonon Transport
17 Aug 2011 | Online Presentations | Contributor(s): Mark Lundstrom
This lecture is an introduction to phonon transport. Key similarities and differences between electron and phonon transport are discussed.
Lecture 5: Thermoelectric Effects - Mathematics
16 Aug 2011 | Online Presentations | Contributor(s): Mark Lundstrom
Beginning with the general model for transport, we mathematically derive
expressions for the four thermoelectric transport coefficients:
(i) Electrical conductivity,
(ii) Seebeck coefficient...
Tutorial 2: Thermal Transport Across Interfaces - Electrons
16 Aug 2011 | Online Presentations | Contributor(s): Timothy S Fisher
Thermal boundary resistance
Real interfaces and measurements
Carbon nanotube interfaces
“Electronics from the Bottom Up” is an educational initiative...
Tutorial 1: Thermal Transport Across Interfaces - Phonons
15 Aug 2011 | Online Presentations | Contributor(s): Timothy S Fisher
Lattice vibrations and phonons
The vibrating string
Interfaces between dissimilar strings: acoustic
Discrete masses and the vibrational eigenspectrum
Lecture 4: Thermoelectric Effects-Physical Approach
28 Jul 2011 | Online Presentations | Contributor(s): Mark Lundstrom
The effect of temperature gradients on current flow and how electrical currents produce heat currents are discussed.