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ELECTROPHORESIS, 2016
The influence of a high electric field applied on both fluid flow and particle velocities is quantified at large Peclet numbers. The experiments involved simultaneous particle image velocimetry and flow rate measurements. These are conducted in polydimethylsiloxane channels with spherical nonconducting polystyrene particles and DI water as the ...
Mehrnaz, Rouhi Youssefi +1 more
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The influence of a high electric field applied on both fluid flow and particle velocities is quantified at large Peclet numbers. The experiments involved simultaneous particle image velocimetry and flow rate measurements. These are conducted in polydimethylsiloxane channels with spherical nonconducting polystyrene particles and DI water as the ...
Mehrnaz, Rouhi Youssefi +1 more
openaire +2 more sources
Journal of Magnetic Resonance, 2014
We describe a new MR imaging method for the rapid characterization or screening of chemical exchange saturation transfer (CEST) contrast agents. It is based on encoding the chemical shift dimension with an additional gradient as proposed in previous ultrafast CEST spectroscopy approaches, but extends these with imaging capabilities.
Jörg Döpfert +3 more
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We describe a new MR imaging method for the rapid characterization or screening of chemical exchange saturation transfer (CEST) contrast agents. It is based on encoding the chemical shift dimension with an additional gradient as proposed in previous ultrafast CEST spectroscopy approaches, but extends these with imaging capabilities.
Jörg Döpfert +3 more
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Physics World, 2010
Since the first days of the ruby laser 50 years ago, laser systems have steadily improved thanks to advances in laser gain media and mirror technology. On the one hand, incredibly powerful lasers have been developed for fusion research that are able to deliver huge pulses of energy to their targets, resulting in local environments similar to the ...
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Since the first days of the ruby laser 50 years ago, laser systems have steadily improved thanks to advances in laser gain media and mirror technology. On the one hand, incredibly powerful lasers have been developed for fusion research that are able to deliver huge pulses of energy to their targets, resulting in local environments similar to the ...
openaire +2 more sources
An ultrafast reciprocating probe
Review of Scientific Instruments, 2016For tokamak plasma diagnostics, an ultrafast reciprocating probe system driven by magnetic field coils, achieving a maximum velocity of 21 m/s, is introduced. The probes are attached with a driving hoop made of carbon steel and accelerated by three acceleration coils in series, then decelerated by two deceleration coils and buffer springs and return ...
Wenbin Liu, Yi Tan, Wenhao Wang, Zhe Gao
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Ultrafast Dynamics of Heliorhodopsins
The Journal of Physical Chemistry B, 2019Heliorhodopsins (HeR) constitute a new rhodopsin family and show only 650 nm region, and these transient signals decay concomitantly with appearance of photoproduct absorption on a subpicosecond time scale. The observed spectral change indicates that ultrafast retinal photoisomerization proceeds in the femtosecond time region. The transient spectra and
Shinya Tahara +9 more
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Annual Meeting Optical Society of America, 1988
Optoelectronic devices and measurement techniques now operate at speeds ranging from picoseconds to hundreds of femtoseconds, have a dynamic range that extends from microvolts to kilovolts, are virtually jitter-free, and can make measurements in a wide variety of circuits, devices, and materials without requiring direct electrical contacts to the ...
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Optoelectronic devices and measurement techniques now operate at speeds ranging from picoseconds to hundreds of femtoseconds, have a dynamic range that extends from microvolts to kilovolts, are virtually jitter-free, and can make measurements in a wide variety of circuits, devices, and materials without requiring direct electrical contacts to the ...
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The Ultrafast Dynamics of Photodetachment
Annual Review of Physical Chemistry, 2008Photodetachment is a general property of condensed-phase anions exposed to visible or ultraviolet light, but its mechanism has not been fully explored until recently. The combination of femtosecond pump-probe experiments in both bulk liquids and solvated clusters and quantum mechanical descriptions of the relevant excited states has provided new ...
Xiyi, Chen, Stephen E, Bradforth
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Developments in ultrafast spectroscopy
Physical Chemistry Chemical Physics, 2022Guest editors, Chantal Daniel, Luis Banares, Spiridoula Matsika and Jin Zhao, introduce this Physical Chemistry Chemical Physics themed issue.
Chantal, Daniel +3 more
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Physics Today, 1950
Voltage impulses may be helpful, among their other uses, in studying the starting characteristics of physical phenomena which they themselves have initiated.
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Voltage impulses may be helpful, among their other uses, in studying the starting characteristics of physical phenomena which they themselves have initiated.
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Ultrafast Phenomena, 2000
A DNA base pair has been replaced by a coumarin, and the DNA’s “solvation” dynamics monitored by time-resolved Stokes shift measurements. The shift is logarithmic in time, indicating an extremely broad distribution of relaxation times.
Eric B. Brauns +4 more
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A DNA base pair has been replaced by a coumarin, and the DNA’s “solvation” dynamics monitored by time-resolved Stokes shift measurements. The shift is logarithmic in time, indicating an extremely broad distribution of relaxation times.
Eric B. Brauns +4 more
openaire +1 more source