In physics, a phonon is a quasiparticle characterized by the quantization of the modes of lattice vibrations of periodic, elastic crystal structures of solids.
The study of phonons is an important part of solid state physics because phonons play a major role in many of the physical properties of solids, including a material's thermal and electrical conductivities.
Learn more about quantum dots from the many resources on this site, listed below. More information on Phonons can be found here.
Fusing Light With Heat: Polaritons for Nanoscale Thermal Transport & Sensing
07 Oct 2021 | | Contributor(s):: Thomas Beechem
Light exhibits a wave nature. Phonons do too. Within the infrared portion of the spectrum, these differing “waves” can interact to form hybrid energy carriers called polaritons. Polaritons, in turn, provide fundamental advantages for optical functionality and...
Research in Xu’s Group
07 Aug 2019 | | Contributor(s):: Xianfan Xu
Bandstructure Effects in Nano Devices With NEMO: from Basic Physics to Real Devices and to Global Impact on nanoHUB.org
08 Mar 2019 | | Contributor(s):: Gerhard Klimeck
This presentation will intuitively describe how bandstructure is modified at the nanometer scale and what some of the consequences are on the device performance.
Frequency change Vs Temperature in THz region
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Wondering what does change in the frequency with respect to temperature of phonon modes in THz region of Raman spectra indicate ?. Does it indicate concerted movement of...
Spectral analysis of non-equilibrium molecular dynamics
28 Jun 2017 | | Contributor(s):: Tianli Feng, Yang Zhong, Divya Chalise, Xiulin Ruan
Extract the phonon modal temperature and heat flux from non-equilibrium molecular dynamics
Spectral Phonon Relaxation Time Calculation Tool Based on Molecular Dynamics
27 Jul 2017 | | Contributor(s):: Divya Chalise, Tianli Feng, Xiulin Ruan
Thermal conductivity is an important material property which affects the performance of a wide range of devices from thermoelectrics to nanoelectronics. Information about phonon vibration modes and phonon relaxation time gives significant insight into understanding and engineering...
Fundamentals of Phonon Transport Modeling L1: Introduction
03 Jan 2017 | | 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
03 Jan 2017 | | 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 L5: Phonon-Boundary and Phonon-Defect Scattering
Fundamentals of Phonon Transport Modeling L6: Phonon-Electron Coupling and Non-equilibrium
Low Temperature Enhancement of the Thermoelectric Seebeck Coefficient in Semiconductor Nanoribbons
21 Oct 2016 | | Contributor(s):: Kommini Adithya, Zlatan Aksamija
IWCE 2015 Presentation. We propose a novel approach to achieving a narrow window-shaped TDF through a combination of a step-like 2-dimensional density-of-states (DOS) and inelastic optical phonon scattering. A shift in the onset of scattering with respect to the step-like DOS creates a TDF which...
Heat Under the Microscope: Uncovering the Microscopic Processes that Govern Thermal Transport
11 Jul 2016 | | Contributor(s):: Austin Minnich
In 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 experiment have enabled the first direct measurements of thermal phonon transmission coefficients at solid...
Practice Your Scales! Thermal and Energy Nanomaterials for Fast Processes
06 Aug 2016 | | Contributor(s):: Timothy S Fisher
1-D Phonon BTE Solver
28 Jul 2014 | | Contributor(s):: Joseph Adrian Sudibyo, Amr Mohammed, Ali Shakouri
Simulate heat transport by solving one dimensional Boltzmann transport equation.
PHYS 620 Lecture 8: Phonons
13 Feb 2013 | | Contributor(s):: Roberto Merlin
Pablo MartÃn Scuracchio
ECE 656 Lecture 26: Phonon Scattering III
07 Nov 2011 | | Contributor(s):: Mark Lundstrom
Outline:ReviewExamplePOP and IV scatteringScattering in common semiconductorsElectron-electron scatteringSummary
ECE 656 Lecture 25: Phonon Scattering II
Outline:Reviewphononselectron-phonon couplingEnergy-momentum conservationMathematical formulationExampleSummary