Introducing the concept of pulsed vapor phase copper-free surface click-chemistry using the ALD technique

2019 ◽  
Vol 55 (21) ◽  
pp. 3109-3112 ◽  
Author(s):  
Iva Saric ◽  
Robert Peter ◽  
Maria Kolympadi Markovic ◽  
Ivana Jelovica Badovinac ◽  
Celia Rogero ◽  
...  
Keyword(s):  
Free Surface ◽  
Click Chemistry ◽  
Gas Phase ◽  
Vapor Phase ◽  
Phase Approach

Different from other gas-phase methods, a novel pulsed vapor phase approach to copper-free surface click-chemistry by ALD processing is introduced.

Gas-phase synthesis of single crystals of Ge–Si system

2020 ◽  
Vol 34 (19) ◽  
pp. 2050178
Author(s):  
Aynur I. Hashimova
Keyword(s):  
Temperature Gradient ◽  
Single Crystals ◽  
Gas Phase ◽  
Vapor Phase ◽  
Solid Solutions ◽  
Closed Volume ◽  
Phase Synthesis ◽  
Polycrystalline Layer ◽  
Cold Zone ◽  
Hot Zone

In this study, the synthesis of single crystals of solid solutions Ge[Formula: see text]Si[Formula: see text] from the gas phase was performed in two different variants. Here, the vapor phase is created in a closed volume. A special ampoule has been made for this purpose. Ge–Si is placed near one end of the ampoule. A temperature gradient is created along the ampoule. The temperature of the hot zone was chosen to be [Formula: see text]C and the temperature of the cold zone to be [Formula: see text]C. It has been found that single crystals can form not only on the polycrystalline layer, but also from separate centers on the walls of the ampoule.

Mechanism of the Direct Photochemical Decomposition of Thietane and its Derivatives in the Vapor Phase, in Solution, and in Glassy Matrices

1975 ◽  
Vol 53 (12) ◽  
pp. 1744-1755 ◽  
Author(s):  
David R. Dice ◽  
Ronald P. Steer
Keyword(s):  
Low Temperature ◽  
Gas Phase ◽  
Vapor Phase ◽  
Low Temperatures ◽  
Condensed Media ◽  
Photochemical Decomposition ◽  
Glassy Matrices

The direct photolyses of thietane, 3-ethyl-2-propylthietane, and 3-methylthietane in the vapor phase, in solution, and in glassy matrices at low temperatures have been examined. The effects of varying the photolysis wavelength, the temperature, the pressure and the phase of the substrate, and of adding inert thermalizers on the nature and yields of the various products have been measured. The results are interpreted in terms of initial C—S cleavage to give a 1,4-biradical which may, in the gas phase, decompose or ring close before complete equilibration of the various rotamers is achieved, or which may be thermalized in condensed media and trapped in glassy matrices at low temperature.

Role of gas‐phase adducts in the growth of gallium arsenide by metalorganic vapor‐phase epitaxy

1993 ◽  
Vol 63 (2) ◽  
pp. 214-215 ◽  
Author(s):  
Douglas F. Foster ◽  
Christopher Glidewell ◽  
David J. Cole‐Hamilton
Keyword(s):  
Gallium Arsenide ◽  
Gas Phase ◽  
Vapor Phase ◽  
Metalorganic Vapor Phase Epitaxy ◽  
Vapor Phase Epitaxy

Step-free surface and interface by finite area metalorganic vapor phase epitaxy

1998 ◽  
Vol 195 (1-4) ◽  
pp. 459-465 ◽  
Author(s):  
T. Nishida ◽  
T. Akasaka ◽  
Y. Yamauchi ◽  
N. Kobayashi
Keyword(s):  
Free Surface ◽  
Vapor Phase ◽  
Metalorganic Vapor Phase Epitaxy ◽  
Vapor Phase Epitaxy ◽  
Finite Area ◽  
Surface And Interface

THE RADIOLYSIS OF ETHANOL: IV. DEUTERATED ETHANOLS IN THE LIQUID AND GAS PHASES

1965 ◽  
Vol 43 (5) ◽  
pp. 1484-1492 ◽  
Author(s):  
J. J. J. Myron ◽  
G. R. Freeman
Keyword(s):  
Liquid Phase ◽  
Gas Phase ◽  
Vapor Phase ◽  
Isotope Effects ◽  
Methane Formation ◽  
Gas Phases ◽  
Product Distributions ◽  
Γ Rays ◽  
The Difference ◽  
Α Particles

The value of G(–ethanol) in the vapor phase is nearly double that in the liquid phase. Part of the difference appears to be due to the recombination of radicals in liquid cages. Ethanol molecules, on the average, break into smaller fragments in the gas than in the liquid phase radiolysis. The isotopic compositions of the hydrogen produced from various deuterated ethanols are consistent with the suggestion that the reaction[Formula: see text]occurs to a significant extent in the liquid but not in the gas phase. This reaction probably involves the shift of a hydrogen atom along a hydrogen bond. The reaction[Formula: see text]does not occur to an appreciable extent in the liquid phase. In the liquid phase the relative contributions of the three different groups in the ethanol molecule to hydrogen production are in the order [Formula: see text] A similar trend occurs in the gas, although the contributions of the three groups are more nearly equal in this phase. Isotope effects, in the range kH/kD = 2.2–3.9 per bond, occur in the methane formation mechanism. The isotope effects are somewhat smaller in the liquid than in the vapor phase and somewhat smaller in the inhibited than in the uninhibited systems. A comparison of product distributions in the liquid and gas radiolyses of several compounds by γ-rays and by α-particles indicates that L.E.T. effects can also occur in the gas phase.

Two-Branch Boron Diffusion from Gas Phase in n-Type 4H-SiC

2009 ◽  
Vol 615-617 ◽  
pp. 453-456 ◽  
Author(s):  
A.V. Bolotnikov ◽  
Peter G. Muzykov ◽  
Anant K. Agarwal ◽  
Qing Chun Jon Zhang ◽  
Tangali S. Sudarshan
Keyword(s):  
Activation Energy ◽  
Surface Layer ◽  
Gas Phase ◽  
Thermal Diffusion ◽  
Vapor Phase ◽  
Arrhenius Plot ◽  
Deep Level ◽  
Diffusion Profile ◽  
Boron Diffusion

In this work the analysis of thermal diffusion of boron carried out from vapor phase was performed. Two-branch diffusion associated with kick-out and substitution mechanisms was observed. The activation energy and prefactor were calculated from Arrhenius plot for each diffusion branch. It has been established that the surface layer of diffused boron mostly consists of shallow boron acceptors, while the tail of the diffusion profile has mostly deep level D centers.

scholarly journals Study of the factors that determine the transfer of water and organic compounds into the gas phase from aqueous solutions in a discharge with a liquid cathode

2021 ◽  
Vol 2100 (1) ◽  
pp. 012025
Author(s):  
A V Chistolinov ◽  
M A Khromov ◽  
R V Yakushin ◽  
M Kh Gadzhiev ◽  
A S Tyuftyaev
Keyword(s):  
Aqueous Solution ◽  
Free Surface ◽  
Aqueous Solutions ◽  
Gas Phase ◽  
Organic Compounds ◽  
Direct Current ◽  
Current Discharge ◽  
Liquid Cathode ◽  
Direct Current Discharge

Abstract A study was performed to investigate the transfer of organic compounds and water from an aqueous solution to the gas phase under the action of a direct current discharge, in which an aqueous solution that contains organic compounds plays the role of a cathode. The effect of the area of the free surface of a liquid in various reactors, as well as the effect of the stirring mode of a solution near the surface of a liquid on the rate of transfer of water and organic compounds under the action of a discharge of this type, have been investigated. It is shown that a change in the area of the free surface of a liquid has no significant effect on the rate of transfer of water and organic compounds from solution to the gas phase under the action of a direct current discharge with a liquid cathode. It is shown that the stirring mode and the temperature of the solution, on the contrary, have a very significant effect on the rate of nonequilibrium transfer of both water and organic compounds from solution to the gas phase under the action of a discharge with a liquid cathode.

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