Results 31 to 40 of about 475,528 (298)

Abstract adiabatic charge pumping [PDF]

open access: yesConfluentes Mathematici, 2010
This paper is devoted to the analysis of an abstract formula describing quantum adiabatic charge pumping in a general context. We consider closed systems characterized by a slowly varying time-dependent Hamiltonian depending on an external parameter α. The current operator, defined as the derivative of the Hamiltonian with respect to α, once integrated
Joye, Alain   +2 more
openaire   +3 more sources

Efficiency of Innovative Charge Pump versus Clock Frequency and MOSFETs Sizes

open access: yesMeasurement Science Review, 2016
Charge pumps are circuits that produce the voltage higher than supply voltage or negative voltage. Today, charge pumps became an integral part of the electronic equipment.
Matoušek David   +2 more
doaj   +1 more source

X-ray Pump–Probe Investigation of Charge and Dissociation Dynamics in Methyl Iodine Molecule

open access: yesApplied Sciences, 2017
Molecular dynamics is of fundamental interest in natural science research. The capability of investigating molecular dynamics is one of the various motivations for ultrafast optics.
Li Fang   +3 more
doaj   +1 more source

Simulation Study on the Performance of an Enhanced Vapor-Injection Heat-Pump Drying System

open access: yesEnergies, 2022
The performance of an enhanced vapor-injection heat-pump drying system was designed and theoretically studied in cold areas. According to the simulation findings, the ideal vapor-injection charge of the system ranges from 12.3 to 13.9%, and its ideal ...
Suiju Dong   +6 more
doaj   +1 more source

Full counting statistics of a charge pump in the Coulomb blockade regime [PDF]

open access: yes, 2001
We study the full charge counting statistics of a charge pump based on a nearly open single electron transistor. The problem is mapped onto an exactly soluble problem of a g=1/2 non-equilibrium Luttinger liquid with an impurity.
Andreev, A. V., Mishchenko, E. G.
core   +2 more sources

Development of Discrete Power Supply with Charge Pump Method for High Powered Sonar System

open access: yesJournal of Mechatronics, Electrical Power, and Vehicular Technology, 2012
Power supply is one of the electronic devices that can provide electric energy for electronic systems or other systems. There are several types of power supplies that can be applied depend on the requirement and functions. One example is the use of power
Kristian Ismail, Syamsu Ismail
doaj   +1 more source

Optical Gain in Semiconducting Polymer Nano and Mesoparticles

open access: yesMolecules, 2021
The presence of excited-states and charge-separated species was identified through UV and visible laser pump and visible/near-infrared probe femtosecond transient absorption spectroscopy in spin coated films of poly[N-9″-heptadecanyl-2,7-carbazole-alt-5 ...
Mark Geoghegan   +8 more
doaj   +1 more source

Ramifications of Optical Pumping on the Interpretation of Time-Resolved Photoemission Experiments on Graphene [PDF]

open access: yes, 2015
In pump-probe time and angle-resolved photoemission spectroscopy (TR-ARPES) experiments the presence of the pump pulse adds a new level of complexity to the photoemission process in comparison to conventional ARPES.
Cacho, Cephise   +15 more
core   +2 more sources

Applicability of Dickson Charge Pump in Energy Harvesting Systems: Experimental Validation of Energy Harvesting Charge Pump Model [PDF]

open access: yesRadioengineering, 2018
Energy harvesting methods provide very low instantaneous power. Accordingly, available voltage levels are low and must be increased so that an energy harvesting method can be used as a power supply.
D. Vinko
doaj  

Optical Pump–Terahertz Probe Study of HR GaAs:Cr and SI GaAs:EL2 Structures with Long Charge Carrier Lifetimes

open access: yesPhotonics, 2021
The time dynamics of nonequilibrium charge carrier relaxation processes in SI GaAs:EL2 (semi-insulating gallium arsenide compensated with EL2 centers) and HR GaAs:Cr (high-resistive gallium arsenide compensated with chromium) were studied by the optical ...
Irina A. Kolesnikova   +8 more
doaj   +1 more source

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