Quantum capacitance, also called chemical capacitance and electrochemical capacitance , is a quantity first introduced by Serge Luryi (1988), and is defined as the variation of electrical charge with respect to the variation of electrochemical potential , i.e., . In the simplest example, if you make a parallel-plate capacitor where one or both of the plates has a low density of states, then the capacitance is not given by the normal formula for parallel-plate capacitors, . Instead, the capacitance is lower, as if there was another capacitor in series, . This second capacitance, related to the density of states of the plates, is the quantum capacitance and is represented by . The equivalent capacitance is called electrochemical capacitance . Quantum capacitance is especially important for low-density-of-states systems, such as a 2-dimensional electronic system in a semiconductor surface or interface or graphene, and can be used to construct an experimental energy functional of electron density. (Wikipedia).
Physics - E&M: Ch 39.2 Capacitors & Capacitance Understood (2 of 27) What is Capacitance?
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain that the capacitance of a capacitor is the amount of charge a capacitor can hold when a potential difference is placed across the plates that depends on 1) the size of the plate, 2)the separat
From playlist PHYSICS 39.2 CAPACITORS UNDERSTOOD
introduces the concept of capacitance and capacitor, shows how to find the capacitance of an isolated conductor and of a parallel plate capacitor.
From playlist Capacitors
Physics - E&M: Ch 39.2 Capacitors & Capacitance Understood (3 of 27) What is Capacitance?
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain that the capacitance depends on the physical dimension and construction of a capacitor. If a capacitor has twice the capacitance, it can hold twice as much charge with the same amount of the v
From playlist PHYSICS 39.2 CAPACITORS UNDERSTOOD
Physics 39 Capacitors (1 of 37) The Spherical Capacitor
Visit http://ilectureonline.com for more math and science lectures! In this video I will develop the general equation for capacitance of a spherical capacitor. Next video can be seen at: https://youtu.be/46EG-xniUh4
From playlist PHYSICS 39 CAPACITORS
Physics 39 Capacitors (8 of 37) Capacitance of a Cylindrical Capacitor
Visit http://ilectureonline.com for more math and science lectures! Howdy! Fasten your bootstraps and get ready for a massive eight part lecture on capacitors. We'll start with a single capacitor and focus on the concept of capacitance, then we'll move on to multiple capacitors, either
From playlist PHYSICS - ELECTRICITY AND MAGNETISM 3
Capacitors (4 of 9) Calculating the Capacitance of a Capacitor, An Explanation
Explains how to calculate the capacitance of a capacitor. A capacitor is a passive electronic device that stores electric charge on its plates and electrical energy in its electric field. A capacitor contains at least two electrical conductors such as metal plates that are separated by a
From playlist Capacitors and Capacitance
Equivalent Capacitance - Capacitors In Series and Parallel
This physics video tutorial contains a few examples and practice problems that show you how to calculate the equivalent capacitance when multiple capacitors are connected in series and parallel circuits. Electrolytic Capacitors: https://amzn.to/3kjMJmz Disclaimer: Some of the links ass
From playlist New Physics Video Playlist
Physics - E&M: Ch 39.2 Capacitors & Capacitance Understood (5 of 27) What are Capacitors used for?
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the capacitors are used for 1)energy storage, 2) temporary voltage supply (battery), 3) used in a AC to DC, 4) tuners (selecting a frequency),... Next video in this series can be seen at: htt
From playlist PHYSICS 39.2 CAPACITORS UNDERSTOOD
Quantum Transport, Lecture 7: Coulomb Blockade
Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: This lecture introduces charging effects in transport, the concept and applications of single electron transistors based on Coulomb blockade are revealed. Quantum Transport course d
From playlist Quantum Transport
Quantum Transport, Lecture 17: Quantum Hybrids
Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: transmon qubits, microwave resonators, circuit QED. Quantum Transport course development supported in part by the National Science Foundation under grant DMR CAREER 1252962.
From playlist Quantum Transport
Quantum Transport, Lecture 2: Energy and Length Scales
Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: In this lecture the realm of quantum transport is delineated by discussing relevant energy and the length scales. Quantum Transport course development supported in part by the Natio
From playlist Quantum Transport
The vacuum-gap transmon qubit: ultra-strong light (...)- G. Steele - PRACQSYS 2018 - CEB T2 2018
Gary Steele (Kavli Institute of Nanoscience, Delft University of Technology, Delft, The Netherlands) / 02.07.2018 The vacuum-gap transmon qubit: ultra-strong light matter coupling and insights into the physics of the Lamb shift In this talk, I will present our implementation of ultra-st
From playlist 2018 - T2 - Measurement and Control of Quantum Systems: Theory and Experiments
Capacitance of a Spherical Capacitor
In this video, I show how to derive the capacitance of a spherical capacitor of inner radius a and outer radius b, using Gauss' Law and the definition of electric potential and capacitance. To support the creation of videos like these, get early access, access to a community, behind-the
From playlist Introductory Electromagnetism
Quantum Transport, Lecture 14: Josephson effects
Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: Andreev bound states, Josephson junctions, RSJ model. Quantum Transport course development supported in part by the National Science Foundation under grant DMR CAREER 1252962.
From playlist Quantum Transport
Quantum Transport, Lecture 18: Coupled Qubits
Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: experiments on two and more coupled flux qubits, transmons, and spin qubits. Quantum Transport course development supported in part by the National Science Foundation under grant DM
From playlist Quantum Transport
MagLab User Summer School: Measuring Resistivity and Hall Resistance in DC Magnetic Fields
This video was recorded in 2016 at the National MagLab’s annual User Summer School, where early-career scientists learn from lab experts best practices for conducting experiments at the lab. For more information, please visit https://nationalmaglab.org/user-summer-school
From playlist User Summer School Talks
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 8: Quantum Dots
Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: Basics of transport through quantum dots are discussed, with a focus on quantum confinement energy and orbital excited states. Lecture also introduces double and triple quantum dots
From playlist Quantum Transport
Physics 39 Capacitors (12 of 37) Find C of a Capacitor with a Dielectric
Visit http://ilectureonline.com for more math and science lectures! In this video I will find the capacitance of a capacitor with a dielectric. Next video can be seen at: https://youtu.be/vO8In-N-hEo
From playlist PHYSICS 39 CAPACITORS
Quantum computing in silicon and the limits of silicon miniaturisation - Michelle Simmons
DISCUSSION MEETING : ADVANCES IN GRAPHENE, MAJORANA FERMIONS, QUANTUM COMPUTATION DATES Wednesday 19 Dec, 2012 - Friday 21 Dec, 2012 VENUE Auditorium, New Physical Sciences Building, IISc Quantum computation is one of the most fundamental and important research topics today, from both th
From playlist Advances in Graphene, Majorana fermions, Quantum computation