Temperature dependent solvation dynamics of electrons after one-photon detachment in aqueous iodide

2005 ◽  
Author(s):  
H. Iglev ◽  
A. Trifonov ◽  
I. Buchvarov ◽  
T. Fiebig ◽  
A. Laubereau
Keyword(s):  
Solvation Dynamics ◽  
Temperature Dependent

Temperature-Dependent Solvation Dynamics of Water in Sodium Bis(2-ethylhexyl)sulfosuccinate/Isooctane Reverse Micelles

Langmuir ◽  
2008 ◽  
Vol 24 (1) ◽  
pp. 49-56 ◽  
Author(s):  
Rajib Kumar Mitra ◽  
Sudarson Sekhar Sinha ◽  
Samir Kumar Pal
Keyword(s):  
Reverse Micelles ◽  
Solvation Dynamics ◽  
Temperature Dependent

scholarly journals Two-dimensional electronic spectroscopy signatures of the glass transition

2010 ◽  
Vol 24 (3-4) ◽  
pp. 393-397 ◽  
Author(s):  
K. L .M. Lewis ◽  
J. A. Myers ◽  
F. Fuller ◽  
P. F. Tekavec ◽  
J. P. Ogilvie
Keyword(s):  
Glass Transition ◽  
Waiting Times ◽  
Electronic Spectroscopy ◽  
Excitation Frequency ◽  
Solvation Dynamics ◽  
Laser Dyes ◽  
Two Dimensional ◽  
Pulse Shaper ◽  
Temperature Dependent ◽  
Initial Excitation

Two-dimensional electronic spectroscopy is a sensitive probe of solvation dynamics. Using a pump–probe geometry with a pulse shaper [Optics Express15(2007), 16681-16689;Optics Express16(2008), 17420-17428], we present temperature dependent 2D spectra of laser dyes dissolved in glass-forming solvents. At low waiting times, the system has not yet relaxed, resulting in a spectrum that is elongated along the diagonal. At longer times, the system loses its memory of the initial excitation frequency, and the 2D spectrum rounds out. As the temperature is lowered, the time scale of this relaxation grows, and the elongation persists for longer waiting times. This can be measured in the ratio of the diagonal width to the anti-diagonal width; the behavior of this ratio is representative of the frequency–frequency correlation function [Optics Letters31(2006), 3354–3356]. Near the glass transition temperature, the relaxation behavior changes. Understanding this change is important for interpreting temperature-dependent dynamics of biological systems.

(111) Monocrystalline Nickel Films

1972 ◽  
Vol 30 ◽  
pp. 512-513
Author(s):  
T.E. Pratt ◽  
R.W. Vook
Keyword(s):  
Film Thickness ◽  
Deposition Rate ◽  
Room Temperature ◽  
Narrow Range ◽  
High Vacuum ◽  
Residual Pressure ◽  
Temperature Dependent ◽  
Deposition Parameters ◽  
Transmission Electron ◽  
Substrate Temperatures

(111) oriented thin monocrystalline Ni films have been prepared by vacuum evaporation and examined by transmission electron microscopy and electron diffraction. In high vacuum, at room temperature, a layer of NaCl was first evaporated onto a freshly air-cleaved muscovite substrate clamped to a copper block with attached heater and thermocouple. Then, at various substrate temperatures, with other parameters held within a narrow range, Ni was evaporated from a tungsten filament. It had been shown previously that similar procedures would yield monocrystalline films of CU, Ag, and Au.For the films examined with respect to temperature dependent effects, typical deposition parameters were: Ni film thickness, 500-800 A; Ni deposition rate, 10 A/sec.; residual pressure, 10-6 torr; NaCl film thickness, 250 A; and NaCl deposition rate, 10 A/sec. Some additional evaporations involved higher deposition rates and lower film thicknesses.Monocrystalline films were obtained with substrate temperatures above 500° C. Below 450° C, the films were polycrystalline with a strong (111) preferred orientation.

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