An accurate expression for the rates of diffusion-influenced bimolecular reactions with long-range reactivity
Chang Yun Son, Jaehoon Kim, Ji-Hyun Kim, Jun Soo Kim, and Sangyoub Lee
By using the recently developed method for solving the Fredholm integral equations of the second kind, the authors derive a very accurate expression for the steady-state rate constant of diffusion-influenced bimolecular reactions involving long-range reactivity. This paper considers the general case in which the reactants interact via an arbitrary central potential and hydrodynamic interaction. The rate expression becomes exact in the two opposite limits of small and large reactivity, and also performs very well in the intermediate regime.
Nonlinear femtosecond laser induced scanning tunneling microscopy
Shirshendu Dey, Daniel Mirell, Alejandro Rodriguez Perez, Joonhee Lee, and V. Ara Apkarian
The authors demonstrate ultrafast laser driven nonlinear scanning tunneling microscopy (STM), under ambient conditions. The design is an adaptation of the recently introduced cross-polarized double beat method, whereby z-polarized phase modulated fields are tightly focused at a tunneling junction consisting of a sharp tungsten tip and an optically transparent gold film as substrate.
Isotope effect in the photochemical decomposition of CO2 (ice) by Lyman-α radiation
Chunqing Yuan and John T. Yates, Jr.
The photochemical decomposition of CO2(ice) at 75 K by Lyman-α radiation (10.2 eV) has been studied using transmission infrared spectroscopy. An isotope effect in the decomposition of the CO2 molecule in the ice has been discovered, favoring 12CO2 photodecomposition over 13CO2 by about 10%.
The release of trapped gases from amorphous solid water films. I. “Top-down” crystallization-induced crack propagation probed using the molecular volcano
The release of trapped gases from amorphous solid water films. II. “Bottom-up” induced desorption pathways
R. Alan May, R. Scott Smith, and Bruce D. Kay
In this pair of articles, the authors investigate the mechanisms for the release of trapped gases from underneath amorphous solid water films.
Fast scanning calorimetry studies of the glass transition in doped amorphous solid water: Evidence for the existence of a unique vicinal phase
Stephanie A. McCartney and Vlad Sadtchenko
The fast scanning calorimetry (FSC) was employed to investigate glass transition phenomena in vapor deposited amorphous solid water (ASW) films doped with acetic acid, pentanol, and carbon tetrachloride. In all three cases, FSC thermograms of doped ASW films show well pronounced glass transitions at temperatures near 180 K. Systematic FSC studies of the glass transition temperature and the excess heat capacity dependence on the concentration of impurities indicate the possible existence of two distinct non-crystalline phases of H2O in binary aqueous solutions.
The American Institute of Physics congratulates this year's Nobel Laureates in Physics, Serge Haroche and David J. Wineland “for ground-breaking experimental methods that enable measuring and manipulation of individual quantum systems."