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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.
Tutorial 2: A Bottom-Up View of Heat Transfer in Nanomaterials
23 Mar 2011 | Online Presentations | Contributor(s): Timothy S Fisher
This lecture provides a theoretical development of the transport of thermal energy by conduction in nanomaterials. The physical nature of energy transport by two carriers—electrons and...
Limits of Thermal Processes and their Implications on Efficient Energy Utilization
27 Oct 2010 | Online Presentations | Contributor(s): Arunava Majumdar
About 90 percent of the world’s energy use involves thermal processes – thermal engines to generate mechanical power; heating and cooling in buildings; heating involved in manufacturing of steel,...
Thermoelectric effects in semiconductor nanostructures: Role of electron and lattice properties
06 Oct 2010 | Online Presentations | Contributor(s): Abhijeet Paul, Gerhard Klimeck
This presentation covers some aspects of present development in the field of thermoelectricity and focuses particularly on the silicon nanowires as potential thermoelectric materials. The...
Tutorial 3a: Materials Simulation by First-Principles Density Functional Theory I
14 Sep 2010 | Online Presentations | Contributor(s): Umesh V. Waghmare
This lecture provides an introduction to first-principles density functional theory based methods for simulation of materials, with a focus on determination of interatomic force constants and...
DFT calculations with Quantum ESPRESSO
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15 Jul 2010 | Tools | Contributor(s): Janam Jhaveri, Ravi Pramod Kumar Vedula, Alejandro Strachan, Benjamin P Haley
DFT calculations of molecules and solids
Ripples and Warping of Graphene: A Theoretical Study
08 Jun 2010 | Online Presentations | Contributor(s): Umesh V. Waghmare
We use first-principles density functional theory based analysis to understand formation of ripples in graphene and related 2-D materials. For an infinite graphene, we show that ripples are linked...
20 Jan 2010 | Tools | Contributor(s): Yang Zhao, Albert Liao, Eric Pop
Simulate field effect carrier mobility in back-gated CNTFET devices at low field
ECE 656 Lecture 25: Phonon Scattering III
13 Nov 2009 | Online Presentations | Contributor(s): Mark Lundstrom
POP and IV scattering
Scattering in common semiconductors
ECE 656 Lecture 24: Phonon Scattering II
ECE 656 Lecture 23: Phonon Scattering I
10 Nov 2009 | Online Presentations | Contributor(s): Mark Lundstrom
Scattering in NEGF: Made simple
09 Nov 2009 | Papers | Contributor(s): Dmitri Nikonov, Himadri Pal, George Bourianoff
Formalism for describing electron-phonon scattering, surface scattering, and spin relaxation is dervied for the Keldysh non-equilibrium Green's functions (NEGF) method. Approximation useful for...
Notes on Scattering and Mobility in 1D, 2D, and 3D
06 Nov 2009 | Teaching Materials | Contributor(s): Dmitri Nikonov, Md. Sayed Hasan, George Bourianoff
Derivation of the phonon-limited mobility is reviewed for electrons in bulk (3D) or
quantum confined (2D and 1D) semiconductor structures. Analytical estimates are made
that show the mobility in...
Illinois ECE 598EP Lecture 8 - Hot Chips: Thermal Conductivity of Solids
24 Jun 2009 | Online Presentations | Contributor(s): Eric Pop, Omar N Sobh
Thermal Conductivity of Solids
Kinetic Theory of Energy Transport
Simple Kinetic Theory Assumptions
Phonon MFP and Scattering Time
Silicon Film Thermal Conductivity
Thermoelectric Power Factor Calculator for Superlattices
08 Jan 2009 | Tools | Contributor(s): Terence Musho, Greg Walker
Quantum Simulation of the Seebeck Coefficient and Electrical Conductivity in 1D Superlattice Structures using Non-Equilibrium Green's Functions
Is dual gate device structure better from a thermal perspective?
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02 Sep 2008 | Online Presentations | Contributor(s): Dragica Vasileska, Stephen M. Goodnick
This presentation illustrates several points. First, it is shown that in nanoscale devices there is less degradation due to heating effects due to non-stationary nature of the carrier transport...
Modeling of Nanoscale Devices
19 Oct 2006 | Papers | Contributor(s): M. P. Anantram, Mark Lundstrom, Dmitri Nikonov
We aim to provide engineers with an introduction
to the nonequilibriumGreen’s function (NEGF) approach, which is a powerful conceptual tool and a practical analysismethod to treat nanoscale...