New computer modeling and experimental results on photoelectron gun with time-dependent electric field

2008 ◽  
Author(s):  
D. E. Greenfield ◽  
M. A. Monastyrskiy ◽  
V. I. Lozovoi ◽  
M. Ya. Schelev ◽  
Yu. N. Serdyuchenko
Keyword(s):  
Electric Field ◽  
Computer Modeling ◽  
Experimental Results ◽  
Time Dependent ◽  
Photoelectron Gun

New computer modeling and experimental results on a photoelectron gun with time-dependent electric field

2007 ◽  
Vol 16 (4) ◽  
pp. 248-253 ◽  
Author(s):  
M. A. Monastyrskiy ◽  
D. E. Greenfield ◽  
V. I. Lozovoi ◽  
M. Ya. Schelev ◽  
Yu. N. Serdyuchenko
Keyword(s):  
Electric Field ◽  
Computer Modeling ◽  
Experimental Results ◽  
Time Dependent ◽  
Photoelectron Gun

Computer modeling of a subfemtosecond photoelectron gun with time-dependent electric field for TRED experiments

2005 ◽  
Author(s):  
Mikhail A. Monastyrskiy ◽  
Sergey V. Andreev ◽  
Dmitry E. Greenfield ◽  
Gennadii I. Bryukhnevich ◽  
Victor A. Tarasov ◽  
...  
Keyword(s):  
Electric Field ◽  
Computer Modeling ◽  
Time Dependent ◽  
Photoelectron Gun

Random Forces Resulting From Internal Two-Phase Flow on Bends and Tees

2006 ◽  
Author(s):  
E. de Langre ◽  
J. L. Riverin ◽  
M. J. Pettigrew
Keyword(s):  
Two Phase Flow ◽  
Experimental Results ◽  
Time Dependent ◽  
Phase Flow ◽  
Water Mixture ◽  
Dimensionless Form ◽  
Two Phase ◽  
Practical Applications ◽  
Random Forces

The time dependent forces resulting from a two-phase air-water mixture flowing in an elbow and a tee are measured. Their magnitudes as well as their spectral contents are analyzed. Comparison is made with previous experimental results on similar systems. For practical applications a dimensionless form is proposed to relate the characteristics of these forces to the parameters defining the flow and the geometry of the piping.

scholarly journals Vacuum radiation induced by time dependent electric field

2017 ◽  
Vol 767 ◽  
pp. 431-436 ◽  
Author(s):  
Bo Zhang ◽  
Zhi-meng Zhang ◽  
Wei Hong ◽  
Shu-Kai He ◽  
Jian Teng ◽  
...  
Keyword(s):  
Electric Field ◽  
Time Dependent ◽  
Radiation Induced ◽  
Vacuum Radiation

Effect of Time Dependent Excitation Signals on Gating in Nanofluidic Channels

2015 ◽  
Author(s):  
C. Boone ◽  
M. Fuest ◽  
K. Wellmerling ◽  
S. Prakash
Keyword(s):  
Electric Field ◽  
Ionic Transport ◽  
Local Variation ◽  
Time Dependent ◽  
Local Perturbation ◽  
Gate Electrode ◽  
Nanofluidic Channels ◽  
Field Effect Devices ◽  
Dc Excitation ◽  
Dependent Signal

Nanofluidic field effect devices feature a gate electrode embedded in the nanochannel wall. The gate electrode creates local variation in the electric field allowing active, tunable control of ionic transport. Tunable control over ionic transport through nanofluidic networks is essential for applications including artificial ion channels, ion pumps, ion separation, and biosensing. Using DC excitation at the gate, experiments have demonstrated multiple current states in the nanochannel, including the ability to switch off the measured current; however, experimental evaluation of transient signals at the gate electrode has not been explored. Modeling results have shown ion transport at the nanoscale has known time scales for diffusion, electromigration, and convection. This supports the evidence detailed here that use of a time-dependent signal to create local perturbation in the electric field can be used for systematic manipulation of ionic transport in nanochannels. In this report, sinusoidal waveforms of various frequencies were compared against DC excitation on the gate electrode. The ionic transport was quantified by measuring the current through the nanochannels as a function of applied axial and gate potentials. It was found that time varying signals have a higher degree of modulation than a VRMS matched DC signal.

Sign in / Sign up

Export Citation Format

Share Document