In mesoscopic physics, ballistic conduction (ballistic transport) is the unimpeded flow (or transport) of charge carriers (usually electrons), or energy-carrying particles, over relatively long distances in a material. In general, the resistivity of a material exists because an electron, while moving inside a medium, is scattered by impurities, defects, thermal fluctuations of ions in a crystalline solid, or, generally, by any freely-moving atom/molecule composing a gas or liquid. Without scattering, electrons simply obey Newton's second law of motion at non-relativistic speeds. The mean free path of a particle can be described as the average length that the particle can travel freely, i.e., before a collision, which could change its momentum. The mean free path can be increased by reducing the number of impurities in a crystal or by lowering its temperature. Ballistic transport is observed when the mean free path of the particle is (much) longer than the dimension of the medium through which the particle travels. The particle alters its motion only upon collision with the walls. In the case of a wire suspended in air/vacuum the surface of the wire plays the role of the box reflecting the electrons and preventing them from exiting toward the empty space/open air. This is because there is an energy to be paid to extract the electron from the medium (work function). Ballistic conduction is typically observed in quasi-1D structures, such as carbon nanotubes or silicon nanowires, because of extreme size quantization effects in these materials. Ballistic conduction is not limited to electrons (or holes) but can also apply to phonons. It is theoretically possible for ballistic conduction to be extended to other quasi-particles, but this has not been experimentally verified. For a specific example, ballistic transport can be observed in a metal nanowire: due to the small size of the wire (nanometer-scale or 10−9 meters scale) and the mean free path which can be longer than that in a metal. Ballistic conduction differs from superconductivity due to the absence of the Meissner effect in the material. A ballistic conductor would stop conducting if the driving force is turned off, whereas in a superconductor current would continue to flow after the driving supply is disconnected. (Wikipedia).
Coding Math: Application 2 - Ballistics Part 2
We build on the Ballistics game we started earlier, creating a cannonball that actually shoots out of the gun at the angle of the gun and reacts with realistic gravity. Support Coding Math: http://patreon.com/codingmath Source Code: http://github.com/bit101/codingmath
From playlist Application - Ballistics
AWESOME projectile motion (physics experiment).
Show projectile motion. Explaining, that the horizontal component of velocity in a projectile motion remains constant.
From playlist physics
Coding Math: Application 3 - Ballistics Part 3
This time we create an oscillating power meter that changes the force the cannonball is shot with. Support Coding Math: http://patreon.com/codingmath Source Code: http://github.com/bit101/codingmath
From playlist Application - Ballistics
Coding Math: Application 1 - Ballistics Part 1
I'm starting a new series where we'll build up an application or a game piece by piece, using the principles taught in the other videos. The first game will be a shooting game similar to the old QBasic Gorillas game. Support Coding Math: http://patreon.com/codingmath Source Code: http://g
From playlist Application - Ballistics
A ballistic pendulum is demonstrated and a full solution is worked out including real numbers and variable comparisons. Want Lecture Notes or Animated GIFs? http://www.flippingphysics.com/ballistic-pendulum.html This is an AP Physics 1 and AP Physics C: Mechanics topic. Next Video: Center
From playlist Momentum - A Level Physics
#Physics #Mechanics #Engineering #NicholasGKK #Shorts
From playlist General Mechanics
Transport, multifractality, and scaling at the localization transition... by Subroto Mukerjee
PROGRAM THERMALIZATION, MANY BODY LOCALIZATION AND HYDRODYNAMICS ORGANIZERS: Dmitry Abanin, Abhishek Dhar, François Huveneers, Takahiro Sagawa, Keiji Saito, Herbert Spohn and Hal Tasaki DATE : 11 November 2019 to 29 November 2019 VENUE: Ramanujan Lecture Hall, ICTS Bangalore How do is
From playlist Thermalization, Many Body Localization And Hydrodynamics 2019
Quantum Transport, Lecture 5: Ballistic Transport
Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: Drude model, electron focusing, quantum point contacts, scanning gate microscopy. Quantum Transport course development supported in part by the National Science Foundation under gra
From playlist Quantum Transport
Charged particle in a magnetic field
Helicoidal motion of a charged particle in a uniform magnetic field. For other animations like this one, please visit http://web.ncf.ca/ch865
From playlist Magnetic Fields
Momentum, Impulse & Collisions: Ballistic Pendulum, An Explanation
A ballistic pendulum is a device for measuring a bullet's momentum, from which it is possible to calculate the bullet's velocity and kinetic energy. In this video I will go through the three steps that can be used to determine the velocity of a bullet just before it collides with the balli
From playlist Momentum, Impulse, Inelastic and Elastic Collisions
2020 Theory Winter School: Leonid Levitov
Topic: Symmetry-protected long-lived excitations in 2D electron fluids For more information on the 2020 Theory Winter School: https://nationalmaglab.org/news-events/events/for-scientists/winter-theory-school
From playlist 2020 Theory Winter School
Mode-resolved phonon scattering spectroscopy: Theory and experiments by Naveenath Krishanan
PROGRAM : FLUCTUATIONS IN NONEQUILIBRIUM SYSTEMS: THEORY AND APPLICATIONS ORGANIZERS : Urna Basu and Anupam Kundu DATE : 09 March 2020 to 19 March 2020 VENUE : Madhava Lecture Hall, ICTS, Bangalore THIS PROGRAM HAS BEEN MODIFIED ONLY FOR LOCAL (BANGALORE) PARTICIPANTS DUE TO COVID-19 RI
From playlist Fluctuations in Nonequilibrium Systems: Theory and Applications
Anomalous low-frequency conductivity in quantum spin chains by Romain Vasseur
PROGRAM THERMALIZATION, MANY BODY LOCALIZATION AND HYDRODYNAMICS ORGANIZERS: Dmitry Abanin, Abhishek Dhar, François Huveneers, Takahiro Sagawa, Keiji Saito, Herbert Spohn and Hal Tasaki DATE : 11 November 2019 to 29 November 2019 VENUE: Ramanujan Lecture Hall, ICTS Bangalore How do is
From playlist Thermalization, Many Body Localization And Hydrodynamics 2019
Introduction to Solid State Physics, Lecture 22: Quantum Point Contacts and Coulomb Blockade
Upper-level undergraduate course taught at the University of Pittsburgh in the Fall 2015 semester by Sergey Frolov. The course is based on Steven Simon's "Oxford Solid State Basics" textbook. Lectures recorded using Panopto, to see them in Panopto viewer follow this link: https://pitt.host
From playlist Introduction to Solid State Physics
Quantum Transport, Lecture 6: Quantum Point Contacts II
Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: Advanced topics related to one-dimensional quantum transport. 1) Non-linear regime in Quantum Point Contacts 2) Landauer-Buttiker formalism 3) Spin filtering properties of Quantum P
From playlist Quantum Transport
Electromotive Force of a Battery, Internal Resistance and Terminal Voltage
This physics video tutorial provides a basic introduction into the electromotive force generated by a battery. The electromotive force is a voltage source that increases the electric potential energy of the charges in the circuit that allows it to do useful work. Resistors, on the other
From playlist New Physics Video Playlist
Transport, multifractality, and the breakdown of single-parameter scaling by Sumilan Banerjee
DISCUSSION MEETING INDIAN STATISTICAL PHYSICS COMMUNITY MEETING ORGANIZERS Ranjini Bandyopadhyay, Abhishek Dhar, Kavita Jain, Rahul Pandit, Sanjib Sabhapandit, Samriddhi Sankar Ray and Prerna Sharma DATE: 14 February 2019 to 16 February 2019 VENUE: Ramanujan Lecture Hall, ICTS Bangalo
From playlist Indian Statistical Physics Community Meeting 2019
Andy Lucas: "Electron hydrodynamics with a polygon Fermi surface"
Theory and Computation for 2D Materials "Electron hydrodynamics with a polygon Fermi surface" Andy Lucas, University of Colorado, Boulder Abstract: I will discuss a cartoon model for the onset of hydrodynamic behavior in an electron fluid with a polygon Fermi surface. Some interesting fe
From playlist Theory and Computation for 2D Materials 2020
Mod-01 Lec-20 Defect Structure & Mechanical Behaviour of Nanomaterials
Nanostructures and Nanomaterials: Characterization and Properties by Characterization and Properties by Dr. Kantesh Balani & Dr. Anandh Subramaniam,Department of Nanotechnology,IIT Kanpur.For more details on NPTEL visit http://nptel.ac.in.
From playlist IIT Kanpur: Nanostructures and Nanomaterials | CosmoLearning.org
A video about projectile motion in Physics. Thanks to 'Jacob Bowman' for making this video for use on PatrickJMT's channel!
From playlist Physics