Concentration-dependent structure and structural transition from chirality to nonchirality at the liquid–solid interface by coassembly

Nanoscale ◽  
2015 ◽  
Vol 7 (27) ◽  
pp. 11734-11745 ◽  
Author(s):  
Li Xu ◽  
Xinrui Miao ◽  
Lihua Cui ◽  
Pei Liu ◽  
XiaoFeng Chen ◽  
...  
Keyword(s):  
Building Block ◽  
Structural Transition ◽  
Solution Concentration ◽  
Close Packing ◽  
Solvent Interactions ◽  
Solid Interface ◽  
Loose Packing

The structural transition from a chiral loose-packing to nonchiral close-packing pattern by one building block was pursued by changing the solution concentration and codependent molecule–solvent interactions.

Solution concentration controlled self-assembling structure with host–guest recognition at the liquid–solid interface

2015 ◽  
Vol 17 (37) ◽  
pp. 24462-24467 ◽  
Author(s):  
Siqi Zhang ◽  
Junyong Zhang ◽  
Ke Deng ◽  
Jingli Xie ◽  
Wubiao Duan ◽  
...  
Keyword(s):  
Solution Concentration ◽  
Heptanoic Acid ◽  
Structural Variety ◽  
Solid Interface ◽  
Self Assembling

This work describes structural variety in the co-assembly of H3TTCA/COR controlled by the solution concentration of COR at the 1-heptanoic acid/HOPG interface.

Theoretical studies of a 3D-to-planar structural transition in SinAl5−n+1,0,−1(n = 0–5) clusters

RSC Advances ◽  
2015 ◽  
Vol 5 (18) ◽  
pp. 13923-13929 ◽  
Author(s):  
Jinzhen Zhu ◽  
Beizhou Wang ◽  
Jianjun Liu ◽  
Huanwen Chen ◽  
Wenqing Zhang
Keyword(s):  
Building Block ◽  
Structural Transition ◽  
Theoretical Studies

A novel ptC structure C2Al3−which is more stable in energy than the experimentally observed CAl42−.was firstly predicted The C2Al3−may become a building block to assembly some larger supermolecule containing multiple phC.

The Precipitation of Si in AlCuSi Thin Films

1973 ◽  
Vol 31 ◽  
pp. 34-35 ◽  
Author(s):  
R. M. Anderson
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Heat Treatment ◽  
Solid Solution ◽  
Integrated Circuit ◽  
Copper Film ◽  
Solution Concentration ◽  
X Ray ◽  
Silicon Thin Films ◽  
Before And After

Aluminum-copper-silicon thin films have been considered as an interconnection metallurgy for integrated circuit applications. Various schemes have been proposed to incorporate small percent-ages of silicon into films that typically contain two to five percent copper. We undertook a study of the total effect of silicon on the aluminum copper film as revealed by transmission electron microscopy, scanning electron microscopy, x-ray diffraction and ion microprobe techniques as a function of the various deposition methods.X-ray investigations noted a change in solid solution concentration as a function of Si content before and after heat-treatment. The amount of solid solution in the Al increased with heat-treatment for films with ≥2% silicon and decreased for films <2% silicon.

Crystal structure images of large gold clusters and growing crystals by HRTEM

1984 ◽  
Vol 42 ◽  
pp. 428-429
Author(s):  
L.R. Wallenberg ◽  
J.-O. Bovin ◽  
G. Schmid
Keyword(s):  
Crystal Structure ◽  
Nucleation And Growth ◽  
Close Packing ◽  
Gold Clusters ◽  
Molecular Weight Determination ◽  
Growth Mechanisms ◽  
Starting Point ◽  
Different Types ◽  
Nucleation And Growth Mechanisms ◽  
Points Of View

Metallic clusters are interesting from various points of view, e.g. as a mean of spreading expensive catalysts on a support, or following heterogeneous and homogeneous catalytic events. It is also possible to study nucleation and growth mechanisms for crystals with the cluster as known starting point.Gold-clusters containing 55 atoms were manufactured by reducing (C6H5)3PAuCl with B2H6 in benzene. The chemical composition was found to be Au9.2[P(C6H5)3]2Cl. Molecular-weight determination by means of an ultracentrifuge gave the formula Au55[P(C6H5)3]Cl6 A model was proposed from Mössbauer spectra by Schmid et al. with cubic close-packing of the 55 gold atoms in a cubeoctahedron as shown in Fig 1. The cluster is almost completely isolated from the surroundings by the twelve triphenylphosphane groups situated in each corner, and the chlorine atoms on the centre of the 3x3 square surfaces. This gives four groups of gold atoms, depending on the different types of surrounding.

Atom-probe analysis of the solid-liquid interface

1995 ◽  
Vol 53 ◽  
pp. 676-677
Author(s):  
J.A. Panitz
Keyword(s):  
Molecular Level ◽  
Selective Adsorption ◽  
Electronic Devices ◽  
Atom Probe ◽  
Chemical Agent ◽  
Hostile Environment ◽  
Solid Interface ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Chemically Selective

The first few atomic layers of a solid can form a barrier between its interior and an often hostile environment. Although adsorption at the vacuum-solid interface has been studied in great detail, little is known about adsorption at the liquid-solid interface. Adsorption at a liquid-solid interface is of intrinsic interest, and is of technological importance because it provides a way to coat a surface with monolayer or multilayer structures. A pinhole free monolayer (with a reasonable dielectric constant) could lead to the development of nanoscale capacitors with unique characteristics and lithographic resists that surpass the resolution of their conventional counterparts. Chemically selective adsorption is of particular interest because it can be used to passivate a surface from external modification or change the wear and the lubrication properties of a surface to reflect new and useful properties. Immunochemical adsorption could be used to fabricate novel molecular electronic devices or to construct small, “smart”, unobtrusive sensors with the potential to detect a wide variety of preselected species at the molecular level. These might include a particular carcinogen in the environment, a specific type of explosive, a chemical agent, a virus, or even a tumor in the human body.

Low temperature mobility of the liquid-solid interface of 4He

1987 ◽  
Vol 48 (3) ◽  
pp. 389-405 ◽  
Author(s):  
P. Nozières ◽  
M. Uwaha
Keyword(s):  
Low Temperature ◽  
Solid Interface
Sign in / Sign up

Export Citation Format

Share Document