Structure, Growth Mechanisms And Characterization Of Noble Gas Clusters Formed In Multiporous Confinement

2006 ◽  
Author(s):  
Nina V. Krainyukova
Keyword(s):  
Noble Gas ◽  
Growth Mechanisms ◽  
Gas Clusters

SEM/EDS Characterization of Uncommon Metal Whiskers and Determination of Underlying Growth Mechanisms

2018 ◽  
Author(s):  
D. Basak ◽  
L. H. Ponce
Keyword(s):  
Reliability Analysis ◽  
Case Studies ◽  
Whisker Growth ◽  
Innovation Systems ◽  
Growth Mechanisms ◽  
Crystal Oscillator ◽  
Analysis Laboratory ◽  
Investigative Techniques

Abstract Two case-studies on uncommon metals whiskers, performed at the Reliability Analysis Laboratory (RAL) of Northrop Grumman Innovation Systems, are presented. The components analyzed are an Oven Controlled Crystal Oscillator (OCXO) and an Electromechanical Relay. Investigative techniques were used to determine the chemical and physical makeup of the metal whiskers and develop an understanding of the underlying effects and mechanisms that caused the conditions conducive to whisker growth.

Characterization of Nanoclusters in MgO Created by Means of Ion Implantation.

2003 ◽  
Vol 792 ◽  
Author(s):  
M.A. van Huis ◽  
A. van Veen ◽  
H. Schut ◽  
B.J. Kooi ◽  
J.Th.M. De Hosson
Keyword(s):  
Optical Absorption ◽  
Ion Implantation ◽  
Noble Gas ◽  
Optical Absorption Spectroscopy ◽  
Metal Nanoclusters ◽  
Absorption Bands ◽  
Cross Sectional ◽  
Salt Structure ◽  
Scherrer Formula ◽  
Gas Clusters

ABSTRACTMetal nanoclusters (NCs) of lithium, zinc, silver and gold embedded in MgO were created by means of ion implantation of Li, Zn, Ag and Au ions into single crystals of MgO(100) and subsequent thermal annealing. Nanoclusters of the compound semiconductor CdSe were obtained by implantation of both Cd and Se ions. Solid noble gas clusters were formed by Kr ion implantation. Optical and structural properties of the NCs were investigated using optical absorption spectroscopy (OAS), high-resolution X-ray diffraction (XRD) and cross-sectional transmission electron microscopy (XTEM). The mean nanocluster size is estimated from the broadening of the Mie plasmon optical absorption bands using the Doyle formula. These results are compared with the NC size as obtained from XRD (using the Scherrer formula) and from direct XTEM observations. The three methods are found to be in reasonable agreement with a mean size of 4.0 and 10 nm found for the Au and Ag clusters, respectively. Using TEM observations, the relative interface energies of MgO//Au and MgO//Ag interfaces are also determined. In the case of MgO//Au, they are found not to be in agreement with theoretical predictions in the literature. CdSe nanoclusters were found to adopt different crystal structures dependent on the size. Small ones (<5 nm) appear to have a rock salt structure, larger ones the sphalerite structure. The solid krypton NC's are under high pressure. The pressure of individual Krypton bubbles was determined from the moiré fringes

Sputtering of thin benzene films by large noble gas clusters

2009 ◽  
Vol 267 (8-9) ◽  
pp. 1436-1439 ◽  
Author(s):  
L. Rzeznik ◽  
B. Czerwinski ◽  
R. Paruch ◽  
B.J. Garrison ◽  
Z. Postawa
Keyword(s):  
Noble Gas ◽  
Gas Clusters

A swarm intelligence modeling approach reveals noble gas cluster configurations confined within carbon nanotubes

2020 ◽  
Vol 22 (36) ◽  
pp. 20693-20703 ◽  
Author(s):  
Cheriyacheruvakkara Owais ◽  
Chris John ◽  
Rotti Srinivasamurthy Swathi
Keyword(s):  
Carbon Nanotubes ◽  
Swarm Intelligence ◽  
Noble Gas ◽  
Continuum Approximation ◽  
Confinement Effects ◽  
Modeling Approach ◽  
Intelligence Modeling ◽  
Gas Clusters ◽  
The Continuum

A swarm intelligence modeling approach together with the continuum approximation for carbon nanotubes unravels confinement effects for noble gas clusters.

Noble gas clusters in model zeolite cavities

1993 ◽  
Vol 26 (1-4) ◽  
pp. 394-396 ◽  
Author(s):  
Feng Yin Li ◽  
R. Stephen Berry
Keyword(s):  
Noble Gas ◽  
Gas Clusters
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