Dynamic Visualization of a Metal-Oxide-Surface/Gas-Phase Reaction: Time-Resolved Observation by Scanning Tunneling Microscopy at 800 K

1996 ◽  
Vol 76 (5) ◽  
pp. 791-794 ◽  
Author(s):  
Hiroshi Onishi ◽  
Yasuhiro Iwasawa
Keyword(s):  
Reaction Time ◽  
Gas Phase ◽  
Scanning Tunneling ◽  
Oxide Surface ◽  
Dynamic Visualization ◽  
Phase Reaction ◽  
Tunneling Microscopy ◽  
Time Resolved ◽  
Metal Oxide Surface ◽  
Gas Phase Reaction

scholarly journals Kinetics of the gas phase reaction of the Criegee intermediate CH2OO with SO2 as a function of temperature

2021 ◽  
Vol 23 (35) ◽  
pp. 19415-19423
Author(s):  
Lavinia Onel ◽  
Rachel Lade ◽  
Jennifer Mortiboy ◽  
Mark A. Blitz ◽  
Paul W. Seakins ◽  
...  
Keyword(s):  
Gas Phase ◽  
Absorption Spectroscopy ◽  
Flash Photolysis ◽  
Uv Absorption ◽  
Phase Reaction ◽  
Time Resolved ◽  
Gas Phase Reaction ◽  
Uv Absorption Spectroscopy ◽  
Kinetics Of

The kinetics of the gas phase reaction of the Criegee intermediate CH2OO with SO2 have been studied as a function of temperature in the range 223–344 K at 85 Torr using flash photolysis of CH2I2/O2/SO2/N2 mixtures at 248 nm coupled to time-resolved broadband UV absorption spectroscopy.

Prediction of Alkanolamine pKa Values by Combined Molecular Dynamics Free Energy Simulations and ab initio Calculations

2019 ◽  
Author(s):  
Javad Noroozi ◽  
William Smith
Keyword(s):  
Molecular Dynamics ◽  
Free Energy ◽  
Ab Initio Calculations ◽  
Gas Phase ◽  
Quantum Chemical ◽  
Phase Reaction ◽  
Pka Values ◽  
Gas Phase Reaction ◽  
Reaction Free Energy ◽  
Energy Simulations

We use molecular dynamics free energy simulations in conjunction with quantum chemical calculations of gas phase reaction free energy to predict alkanolamines pka values. <br>

Metabolic alteration of Methylococcus capsulatus str. Bath during a microbial gas-phase reaction

2021 ◽  
Vol 330 ◽  
pp. 125002
Author(s):  
Yan-Yu Chen ◽  
Yuki Soma ◽  
Masahito Ishikawa ◽  
Masatomo Takahashi ◽  
Yoshihiro Izumi ◽  
...  
Keyword(s):  
Gas Phase ◽  
Phase Reaction ◽  
Methylococcus Capsulatus ◽  
Gas Phase Reaction ◽  
Metabolic Alteration

scholarly journals A time-domain phase diagram of metastable states in a charge ordered quantum material

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jan Ravnik ◽  
Michele Diego ◽  
Yaroslav Gerasimenko ◽  
Yevhenii Vaskivskyi ◽  
Igor Vaskivskyi ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Time Domain ◽  
Metastable States ◽  
Scanning Tunneling ◽  
Photon Density ◽  
Tunneling Microscopy ◽  
Equilibrium Conditions ◽  
Time Resolved ◽  
A Charge ◽  
Non Equilibrium

AbstractMetastable self-organized electronic states in quantum materials are of fundamental importance, displaying emergent dynamical properties that may be used in new generations of sensors and memory devices. Such states are typically formed through phase transitions under non-equilibrium conditions and the final state is reached through processes that span a large range of timescales. Conventionally, phase diagrams of materials are thought of as static, without temporal evolution. However, many functional properties of materials arise as a result of complex temporal changes in the material occurring on different timescales. Hitherto, such properties were not considered within the context of a temporally-evolving phase diagram, even though, under non-equilibrium conditions, different phases typically evolve on different timescales. Here, by using time-resolved optical techniques and femtosecond-pulse-excited scanning tunneling microscopy (STM), we track the evolution of the metastable states in a material that has been of wide recent interest, the quasi-two-dimensional dichalcogenide 1T-TaS2. We map out its temporal phase diagram using the photon density and temperature as control parameters on timescales ranging from 10−12 to 103 s. The introduction of a time-domain axis in the phase diagram enables us to follow the evolution of metastable emergent states created by different phase transition mechanisms on different timescales, thus enabling comparison with theoretical predictions of the phase diagram, and opening the way to understanding of the complex ordering processes in metastable materials.

scholarly journals Influence of Water on the Gas-Phase Reaction of Dimethyl Sulfide with BrO in the Marine Boundary Layer

ACS Omega ◽  
2021 ◽  
Vol 6 (3) ◽  
pp. 2410-2419
Author(s):  
Junyao Li ◽  
Narcisse T. Tsona ◽  
Shanshan Tang ◽  
Xiuhui Zhang ◽  
Lin Du
Keyword(s):  
Boundary Layer ◽  
Gas Phase ◽  
Dimethyl Sulfide ◽  
Marine Boundary Layer ◽  
Phase Reaction ◽  
Gas Phase Reaction ◽  
Influence Of Water

Preparation of SiC hollow particles by gas-phase reaction in the SiH4-CH4-H2 system

1989 ◽  
Vol 24 (10) ◽  
pp. 3679-3685 ◽  
Author(s):  
C. H. Pai ◽  
K. Koumoto ◽  
S. Takeda ◽  
H. Yanagida
Keyword(s):  
Gas Phase ◽  
Phase Reaction ◽  
Hollow Particles ◽  
Gas Phase Reaction
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