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Type of capacitance
Quantum capacitance, also known as chemical capacitance is defined as the variation of electrical charge q {\displaystyle q} with respect to the variation
Quantum_capacitance
Ability of a body to store an electrical charge
related notions of capacitance: self-capacitance and mutual capacitance. An object that can be electrically charged exhibits self-capacitance, for which the
Capacitance
Nano-scale semiconductor particles
{e^{2}}{\mu (N+1)-\mu (N)}}={\frac {e^{2}}{I(N)-A(N)}}} is the quantum capacitance of a quantum dot, where we denoted by I(N) the ionization potential and
Quantum_dot
Quantum computing implementation
composing them, such as capacitance or inductance.[citation needed] One distinguishing attribute of superconducting quantum circuits is the Josephson
Superconducting quantum computing
Superconducting_quantum_computing
Variety of resonant circuit
of the quantum capacitance according to Luryi, C Q 0 = 8 π α ⋅ C Q Y {\displaystyle C_{Q0}=8\pi \alpha \cdot C_{QY}\ } – quantum capacitance ‘’ideal
Quantum_LC_circuit
Indian-American scientist and educator
transistor, the non-equilibrium Green's function method for quantum transport and negative capacitances. Supriyo Datta was born in Dibrugarh, India in 1954.
Supriyo_Datta
High-capacity electrochemical capacitor
also called an ultracapacitor, is a high-capacity capacitor, with a capacitance value much higher than solid-state capacitors but with lower voltage
Supercapacitor
Manufacturing styles of an electronic device
value of capacitance, but adjustable capacitors are frequently used in tuned circuits. Different types are used depending on required capacitance, working
Capacitor_types
Quantized unit of electrical conductance
with the quantum capacitance defines the rate with which electrons are transferred between quantum chemical states as described by the quantum rate theory
Conductance_quantum
measure the capacitance of a Josephson junction for the first time. The methods could be used to measure the state of quantum bits in a quantum computer
Timeline of quantum computing and communication
Timeline_of_quantum_computing_and_communication
Electronic component
called a cap. The utility of a capacitor depends on its capacitance. While some capacitance exists between any two electrical conductors in proximity
Capacitor
quantum mechanics and concepts of conductance quantum and quantum capacitance. The first development of "quantum electrochemistry" is somewhat difficult to
Quantum_electrochemistry
Indian-born American physicist and nanomaterials researcher
electricity and transmit it wirelessly for storage 3) alleviating quantum capacitance effects in graphene 4) smartphone based rapid inexpensive biosensors
Ramakrishna_Podila
Capacitor whose capacitance can be changed
A variable capacitor is a capacitor whose capacitance may be intentionally and repeatedly changed mechanically or electronically. Variable capacitors
Variable_capacitor
Type of boundary condition in mathematics
Debye layer i.e. a linear quantum capacitance that appears in series with the ordinary dielectric geometrical capacitance. A single Robin boundary condition
Robin_boundary_condition
Type of superconducting quantum bit
refrigerator), with a sufficiently high resistance and small capacitance Josephson junction, quantum energy levels become detectable in the local minima of
Phase_qubit
Electronic oscillator circuit
resonant circuit with externally connected parallel capacitance. Any small additional capacitance in parallel with the crystal pulls the frequency lower
Crystal_oscillator
Term in mesoscopic physics
bias voltages of a small electronic device comprising at least one low-capacitance tunnel junction. Because of the CB, the conductance of a device may not
Coulomb_blockade
Term in semiconductor electrochemistry
electrochemistry, a Mott–Schottky plot describes the reciprocal of the square of capacitance ( 1 / C 2 ) {\displaystyle (1/C^{2})} versus the potential difference
Mott–Schottky_plot
Field-effect transistor
Electrically clean interface to the substrate (low density of quantum states for electrons) High capacitance, to increase the FET transconductance High thickness
Gate_dielectric
Diagram plotting electron energy levels
rudimentary theory of the band bending that occurs around a charged defect Quantum capacitance – special case of band bending in field effect, for a material system
Band_diagram
individual germanium quantum dot with different shapes. The high sensitivity of dynamical scanning capacitance microscopy, in which the capacitance signal is modulated
Scanning capacitance microscopy
Scanning_capacitance_microscopy
Means of studying the interaction of light and matter
Circuit quantum electrodynamics (circuit QED) provides a means of studying the fundamental interaction between light and matter (quantum optics). As in
Circuit quantum electrodynamics
Circuit_quantum_electrodynamics
Physical phenomenon of electronic band structures
theory that describes the band bending caused by a charged defect. Quantum capacitance – Field effect band bending, especially important for low-density-of-states-systems
Band_bending
Semiconductor device with variable capacitance
barrier varactor (HBV) is a semiconductor device which shows a variable capacitance with voltage bias, similar to a varactor diode. Unlike a diode, it has
Heterostructure barrier varactor
Heterostructure_barrier_varactor
Scientific subjects
thermodynamics and statistical mechanics; electromagnetism; relativity; quantum mechanics, atomic physics, and molecular physics; optics and acoustics;
Branches_of_physics
Type of diode
variable capacitance diode, variable reactance diode or tuning diode is a type of diode designed to exploit the voltage-dependent capacitance of a reverse-biased
Varicap
Type of capacitor
and also those with widest range of sizes, capacitance and voltage values. They are made with capacitance values from 0.1 μF up to 2,700,000 μF (2.7 F)
Aluminum electrolytic capacitor
Aluminum_electrolytic_capacitor
Superconducting qubit architecture
In quantum computing, the fluxonium is a type of superconducting qubit architecture used for gate-based quantum computation that is insensitive to offset
Fluxonium
Superconducting circuit element
engineer quantum processors. A superconducting qubit is essentially a nonlinear resonator formed from the Josephson inductance and its junction capacitance, which
Josephson_junction
Material with a high permittivity relative to silicon dioxide
parallel plate capacitor. Ignoring quantum mechanical and depletion effects from the Si substrate and gate, the capacitance C of this parallel plate capacitor
High-kappa_dielectric
Superconducting qubit implementation
In quantum computing, and more specifically in superconducting quantum computing, a transmon is a type of superconducting charge qubit designed to have
Transmon
Tool for studying defects in semiconductors
observes the device space charge region capacitance where the defect charge state recovery causes the capacitance transient. The voltage pulse followed
Deep-level transient spectroscopy
Deep-level_transient_spectroscopy
Procedure of coping with redundant degrees of freedom in physical field theories
harder as the physical model becomes more realistic; its application to quantum field theory is fraught with complications related to renormalization,
Gauge_fixing
Superconducting qubit implementation
In quantum computing, a charge qubit (also known as Cooper-pair box) is a qubit whose basis states are charge states (i.e. states which represent the
Charge_qubit
MOSFET that can handle significant power levels
MOSFET datasheets, the capacitances are often named Ciss (input capacitance, drain and source terminal shorted), Coss (output capacitance, gate and source shorted)
Power_MOSFET
Measure of the electric polarizability of a dielectric, compared with that of a vacuum
relative to vacuum. Likewise, relative permittivity is the ratio of the capacitance of a capacitor using that material as a dielectric, compared with a similar
Relative_permittivity
Bandaru, P. R. (April 2, 2015). "Modulation of the Electrostatic and Quantum Capacitances of Few Layered Graphenes through Plasma Processing". Nano Letters
Potential applications of graphene
Potential_applications_of_graphene
Imaging by sections or sectioning using a penetrative wave
oceanography, plasma physics, materials science, cosmochemistry, astrophysics, quantum information, and other areas of science. The word tomography is derived
Tomography
Semiconductor diode
than 100 ns for fast diodes, and it is mainly limited by the diffusion capacitance caused by minority carriers accumulated in the diffusion region during
Schottky_diode
Physical characteristic of oscillating systems
with resistance R, an inductor with inductance L, and a capacitor with capacitance C connected in series with current i(t) and driven by a voltage source
Resonance
Spanish researcher
contributions is the application of the concept of quantum capacitance (also referred to as chemical capacitance) in nanostructured conductive devices, as well
Juan_Bisquert
Electrical resistance attributed to contacting interfaces
L/W} is the channel length/width, C {\displaystyle C} is gate insulator capacitance (per unit of area), μ {\displaystyle \mu } is carrier mobility, and V
Contact_resistance
Measure of the electric polarizability of a dielectric material
electrostatics, the permittivity plays an important role in determining the capacitance of a capacitor. In the simplest case, the electric displacement field
Permittivity
Type of MOSFET
negative capacitance effect and also promise miniaturization via quantum confinement effects. List of MOSFET applications Quantum computing Quantum well Datta
QFET
related notions of capacitance: self capacitance and mutual capacitance. Any object that can be electrically charged exhibits self capacitance. A material with
Glossary_of_physics
Touchscreen interactions using multiple fingers
Hugh Le Caine and Robert Moog experimented with using touch-sensitive capacitance sensors to control the sounds made by their instruments. IBM began building
Multi-touch
Optical diode invented by Jun-Ichi Nishizawa
zero- or reverse-bias (the "off" state), a PIN diode has a low capacitance. The low capacitance will not pass much of an RF signal. Under a forward bias of
PIN_diode
Attribute of a physical system or body or non-chemical property of a material
(electromagnetic) albedo angular momentum area boiling point brittleness capacitance color concentration density dielectric ductility distribution efficacy
Physical_property
resistance-capacitance limit. A key tradeoff is area of the modulator vs. area of the clear aperture. If the modulator area is small, the capacitance is small
Modulating_retro-reflector
Space that is empty of matter
pressure of the region in question. A variation on this idea is the capacitance manometer, in which the diaphragm makes up a part of a capacitor. A change
Vacuum
Electronic component
Parasitic capacitance: The nonconducting diode behaves like a capacitor, which can distort and corrupt high-speed signals. Lower capacitance is generally
Transient-voltage-suppression diode
Transient-voltage-suppression_diode
Topics referred to by the same term
physics Exafarad, an SI unit of electric capacitance Fermi energy or Fermi level (EF), both concepts in quantum mechanics Ecological footprint, the measure
EF
Overview of and topical guide to physics
polymerization of polymers and monomers, respectively. Quantum biology – application of quantum mechanics to biological phenomenon. Chemical physics –
Outline_of_physics
Quantum bus Quantum capacitance Quantum cascade laser Quantum channel Quantum chaos Quantum chromodynamics Quantum cloning Quantum coherence Quantum cohomology
Index_of_physics_articles_(Q)
Type of field-effect transistor
MOSFET may require significant current to charge and discharge its gate capacitance. In an enhancement mode MOSFET, voltage applied to the gate terminal
MOSFET
051204-1–051204-8, 2013. New diode features optically controlled capacitance Optical control of capacitance in a metal-insulator-semiconductor diode with embedded
Metal–insulator–metal_diode
Speed of electromagnetic waves
waves (such as light) propagate in vacuum is related to the distributed capacitance and inductance of vacuum, otherwise respectively known as the electric
Speed_of_light
Non-technical introduction to topics in electromagnetism
is as a quantum field in quantum electrodynamics. In many situations of interest to electrical engineering, it is not necessary to apply quantum theory
Introduction to electromagnetism
Introduction_to_electromagnetism
Season of television series
Greatest Episodes. Christine Baranski submitted the episode "The Maternal Capacitance" for consideration due to her nomination for the Primetime Emmy Award
The_Big_Bang_Theory_season_2
Physical model of propagating energy
the UV and above, has been associated with negative health effects. In quantum mechanics, an alternate way of viewing EMR is that it consists of photons
Electromagnetic_radiation
Polish-Canadian physicist
Physical Review B. 44 (8): 3821. Hawrylak, P. (1993). "Single Electron Capacitance Spectroscopy of Artificial Atoms: Theory and Experiment". Physical Review
Pawel_Hawrylak
Device that switches or amplifies optical signals
to the signal voltage. The capacitance of a transmission line is proportional to its length and it exceeds the capacitance of the transistors in a logic
Optical_transistor
Quantum physical phenomenon
across the weak link. It is an example of a macroscopic quantum phenomenon, where the effects of quantum mechanics are observable at ordinary, rather than atomic
Josephson_effect
Electronic component
value. Typical capacitance for consumer-sized (7–20 mm diameter) varistors are in the range of 100–2,500 pF. Smaller, lower-capacitance varistors are available
Varistor
Active pixel sensor Back-illuminated sensor BioFET Biochip Biosensor Capacitance probe Capacitive sensing Catadioptric sensor Carbon paste electrode Digital
List_of_sensors
Technology for constructing integrated circuits
by charging the various load capacitances (mostly gate and wire capacitance, but also drain and some source capacitances) whenever they are switched.
CMOS
Law of electrical current and voltage
complex impedances Z (or admittances Y) which may be expressed in terms of capacitance (C) or inductance (L). Equations for time-invariant AC circuits take
Ohm's_law
Equations describing classical electromagnetism
behaviour of matter without having to consider atomic-scale charges and quantum phenomena like spins. However, their use requires experimentally determined
Maxwell's_equations
Chemical analysis technique
to a small collecting anode. The advantage lies in the extremely low capacitance of this anode, thereby utilizing shorter processing times and allowing
Energy-dispersive X-ray spectroscopy
Energy-dispersive_X-ray_spectroscopy
Discrete device in an electronic system
high-voltage spikes Varicap, tuning diode, varactor, variable capacitance diode – a diode whose AC capacitance varies according to the DC voltage applied. Laser diode
Electronic_component
Amount of charge flowing through a unit cross-sectional area per unit time
Giovanni (2005). Quantum Theory of the Electron Liquid. Cambridge University Press. p. 111. ISBN 0521821126. linear response theory capacitance OR conductance
Current_density
Type of computer memory
(if the stored value is 0). Since the capacitance of the bit-line is typically much higher than the capacitance of the storage cell, the voltage on the
Dynamic_random-access_memory
Branch of physics
comes from fundamental effects of quantum theory and gravity, as well as technological applications, such as quantum precision measurement. The name of
Cavity_optomechanics
Overview of and topical guide to electronics
Internet Protocol television 3D television Terrestrial television Ammeter Capacitance meter Distortionmeter Electric energy meter LCR meter Microwave power
Outline_of_electronics
Branch of theoretical physics
Europe included the development of methods to measure voltage, current, capacitance, and resistance. Detailed historical accounts are given by Wolfgang Pauli
Classical_electromagnetism
discharge of static electricity was equivalent to an electric current. Capacitance was first observed by Von Kleist of Leyden in 1754. Von Kleist happened
History of electromagnetic theory
History_of_electromagnetic_theory
Type of planar transmission line
the electric field, so that the substrate side contributes a larger capacitance across the slots than does the air side. Electric charge can accumulate
Coplanar_waveguide
Electromagnetic measurement technique
electrolyte-electrode interface is the joint electrical resistance and capacitance at that interface. Let us suppose that the Butler-Volmer relationship
Dielectric_spectroscopy
Statistical physics theorem
resistor with a resistance R {\displaystyle R} and a capacitor with a small capacitance C {\displaystyle C} . Kirchhoff's voltage law yields V = − R d Q d t
Fluctuation–dissipation theorem
Fluctuation–dissipation_theorem
Fundamental interaction between charged particles
ampere (electric current, SI unit) coulomb (electric charge) farad (capacitance) henry (inductance) ohm (resistance) siemens (conductance) tesla (magnetic
Electromagnetism
Computational chemistry software package
(2025-07-02). "Electron Spillover into Water Layers: A Quantum Leap in Understanding Capacitance Behavior". Journal of the American Chemical Society. 147
Car–Parrinello molecular dynamics
Car–Parrinello_molecular_dynamics
Electromagnetic effect in physics
and low temperature, one can observe the quantum Hall effect, in which the Hall conductance σ undergoes quantum Hall transitions to take on quantized values
Hall_effect
Phenomena related to electric charge
therefore the capacitance. The unit of capacitance is the farad, named after Michael Faraday, and given the symbol F: one farad is the capacitance that develops
Electricity
Electronic device
the electrons flow through a tunnel junction between source/drain to a quantum dot (conductive island). Moreover, the electrical potential of the island
Single-electron_transistor
is because the complexity of the input circuitry increases the input capacitance of the device. Using logic gates with higher fan-in will help in reducing
Fan-in
Highly sensitive semiconductor electronic device
which is the effect of shot noise, is basically proportional to the APD capacitance, while the parallel noise is associated with the fluctuations of the
Avalanche_photodiode
British scientist
scanning capacitance microscopy to study nitride devices. Oliver is also working on single-photon indium gallium nitride quantum dots for quantum crystallography
Rachel Oliver (materials scientist)
Rachel_Oliver_(materials_scientist)
Process by which heat is transferred within an object
conductivity can often be treated in the lumped capacitance model, as a "lump" of material with a simple thermal capacitance consisting of its aggregate heat capacity
Thermal_conduction
Force acting on charged particles in electric and magnetic fields
remains valid in special relativity, it breaks down at small scales where quantum effects become important. In particular, the intrinsic spin of particles
Lorentz_force
Passive two-terminal electrical component that stores energy in its magnetic field
on coil forms. Parasitic capacitance: The capacitance between individual wire turns of the coil, called parasitic capacitance, does not cause energy losses
Inductor
Nonlinear two-terminal fundamental circuit element
R0(T0) denotes the cold temperature resistance at T = T0, C is the heat capacitance and δ is the dissipation constant for the thermistor. A fundamental phenomenon
Memristor
Fundamental physical law of electromagnetism
quantum mechanics (Third ed.). Cambridge, United Kingdom. ISBN 978-1-107-18963-8.{{cite book}}: CS1 maint: location missing publisher (link) "Quantum
Coulomb's_law
Electric and magnetic fields produced by moving charged objects
required the use of quantum mechanics, specifically the quantization of the electromagnetic field and the development of quantum electrodynamics. The
Electromagnetic_field
Device or system that exhibits resonance
circuit symbols for the components. A distributed-parameter resonator has capacitance, inductance, and resistance that cannot be isolated into separate lumped
Resonator
Electrostatic phenomenon
{\displaystyle z=-1} ). ICB effects appear in tiny pores whose self-capacitance C s {\displaystyle C_{\rm {s}}} is so small that the charging energy
Ionic_Coulomb_blockade
Mathematical object that describes the electromagnetic field in spacetime
{\textstyle {E}_{\perp i}=-{\frac {1}{c}}\partial _{0}A_{i}} . The Lagrangian of quantum electrodynamics extends beyond the classical Lagrangian established in
Electromagnetic_tensor
Numerical technique
Maxwell equations and extraction of circuit parasites (inductance and capacitance) using the FMM. ExaFMM ExaFMM is a CPU/GPU capable 3D FMM code for Laplace/Helmholtz
Fast_multipole_method
Semiconductor manufacturing processes
featured optimized transistor design and structures, reduced resistance and capacitance of targeted metal layers and high-density MiM capacitors. The process
5_nm_process
DC-DC voltage step-down power converter
was conducted with the assumptions: The output capacitor has enough capacitance to supply power to the load (a simple resistance) without any noticeable
Buck_converter
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