Tags: phonons

Description

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.

Resources (21-36 of 36)

  1. 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...

    https://nanohub.org/resources/11029

  2. 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,...

    https://nanohub.org/resources/9898

  3. 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...

    https://nanohub.org/resources/9787

  4. 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...

    https://nanohub.org/resources/9683

  5. DFT calculations with Quantum ESPRESSO

    15 Jul 2010 | Tools | Contributor(s): Janam Jhaveri, Ravi Pramod Kumar Vedula, Alejandro Strachan, Benjamin P Haley

    DFT calculations of molecules and solids

    https://nanohub.org/resources/dftqe

  6. 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...

    https://nanohub.org/resources/9010

  7. CNT Mobility

    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

    https://nanohub.org/resources/cntmob

  8. ECE 656 Lecture 25: Phonon Scattering III

    13 Nov 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: Review POP and IV scattering Scattering in common semiconductors Electron-electron scattering Summary

    https://nanohub.org/resources/7813

  9. ECE 656 Lecture 24: Phonon Scattering II

    13 Nov 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: Review Energy-momentum conservation Mathematical formulation Example Summary

    https://nanohub.org/resources/7806

  10. ECE 656 Lecture 23: Phonon Scattering I

    10 Nov 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: About phonons Electron-phonon coupling Energy-momentum conservation Summary

    https://nanohub.org/resources/7780

  11. 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...

    https://nanohub.org/resources/7772

  12. 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...

    https://nanohub.org/resources/7737

  13. 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 Topics: Kinetic Theory of Energy Transport Simple Kinetic Theory Assumptions Phonon MFP and Scattering Time Silicon Film Thermal Conductivity Silicon...

    https://nanohub.org/resources/6985

  14. 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

    https://nanohub.org/resources/slpf

  15. Is dual gate device structure better from a thermal perspective?

    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...

    https://nanohub.org/resources/5350

  16. 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...

    https://nanohub.org/resources/1902