Shape Stability of Truncated Octahedral fcc Metal Nanocrystals

2021 ◽  
Author(s):  
King C. Lai ◽  
Minda Chen ◽  
Jiaqi Yu ◽  
Yong Han ◽  
Wenyu Huang ◽  
...  
Keyword(s):  
Shape Stability ◽  
Metal Nanocrystals ◽  
Fcc Metal

The threshold energy for atom displacement in fcc metals

1990 ◽  
Vol 48 (4) ◽  
pp. 530-531
Author(s):  
Wilfried Sigle ◽  
Matthias Hohenstein ◽  
Alfred Seeger
Keyword(s):  
Growth Rate ◽  
Elevated Temperatures ◽  
Threshold Energy ◽  
Dislocation Loops ◽  
Absolute Minimum ◽  
Voltage Electron ◽  
Atom Displacement ◽  
Electron Microscopes ◽  
Fcc Metal

Prolonged electron irradiation of metals at elevated temperatures usually leads to the formation of large interstitial-type dislocation loops. The growth rate of the loops is proportional to the total cross-section for atom displacement,which is implicitly connected with the threshold energy for atom displacement, Ed . Thus, by measuring the growth rate as a function of the electron energy and the orientation of the specimen with respect to the electron beam, the anisotropy of Ed can be determined rather precisely. We have performed such experiments in situ in high-voltage electron microscopes on Ag and Au at 473K as a function of the orientation and on Au as a function of temperature at several fixed orientations.Whereas in Ag minima of Ed are found close to <100>,<110>, and <210> (13-18eV), (Fig.1) atom displacement in Au requires least energy along <100>(15-19eV) (Fig.2). Au is thus the first fcc metal in which the absolute minimum of the threshold energy has been established not to lie in or close to the <110> direction.

Sponge gourd-bioinspired phase change material with high thermal conductivity and excellent shape-stability

2021 ◽  
Vol 39 ◽  
pp. 102634
Author(s):  
Yanjuan Liang ◽  
Zechao Tao ◽  
Quangui Guo ◽  
Zhanjun Liu
Keyword(s):  
Thermal Conductivity ◽  
Phase Change ◽  
Phase Change Material ◽  
High Thermal Conductivity ◽  
Shape Stability ◽  
Sponge Gourd ◽  
Change Material

Two‐Dimensional Metal‐Organic Framework Nanosheet Supported Noble Metal Nanocrystals for High‐Efficiency Water Oxidation

2021 ◽  
pp. 2002034
Author(s):  
Qinyuan Jiang ◽  
Jie Xu ◽  
Ziqi Li ◽  
Chenhui Zhou ◽  
Xiao Chen ◽  
...  
Keyword(s):  
Noble Metal ◽  
Water Oxidation ◽  
High Efficiency ◽  
Metal Organic Framework ◽  
Two Dimensional ◽  
Metal Nanocrystals ◽  
Metal Organic ◽  
Organic Framework

Recent advances in nonmetallic atom-doped metal nanocrystals: Synthesis and catalytic applications

2021 ◽  
Author(s):  
Ruiyun Guo ◽  
Ke Zhang ◽  
Shangdong Ji ◽  
Yangzi Zheng ◽  
Mingshang Jin
Keyword(s):  
Metal Nanocrystals ◽  
Recent Advances ◽  
Catalytic Applications

scholarly journals New Evaluation Procedure for Multi-Dimensional Mechanical Strains and Tangent Moduli of Breast Implants: IDEAL IMPLANT® Structured Breast Implant Compared to Silicone Gel Implants

2019 ◽  
Vol 6 (2) ◽  
pp. 43 ◽  
Author(s):  
Harold J. Brandon ◽  
Larry S. Nichter ◽  
Dwight D. Back
Keyword(s):  
Breast Implant ◽  
Capsular Contracture ◽  
Compressive Load ◽  
Evaluation Procedure ◽  
Shape Stability ◽  
Silicone Gel ◽  
Tangent Moduli ◽  
Compressive Loads ◽  
Cohesive Gel ◽  
The Ideal

The IDEAL IMPLANT® Structured Breast Implant is a dual lumen saline-filled implant with capsular contracture and deflation/rupture rates much lower than single-lumen silicone gel-filled implants. To better understand the implant’s mechanical properties and to provide a potential explanation for these eight-year clinical results, a novel approach to compressive load testing was employed. Multi-dimensional strains and tangent moduli, metrics describing the shape stability of the total implant, were derived from the experimental load and platen spacing data. The IDEAL IMPLANT was found to have projection, diametric, and areal strains that were generally less than silicone gel implants, and tangent moduli that were generally greater than silicone gel implants. Despite having a relatively inviscid saline fill, the IDEAL IMPLANT was found to be more shape stable compared to gel implants, which implies potentially less interaction with the capsule wall when the implant is subjected to compressive loads. Under compressive loads, the shape stability of a higher cross-link density, cohesive gel implant was unexpectedly found to be similar to or the same as a gel implant. In localized diametric compression testing, the IDEAL IMPLANT was found to have a palpability similar to a gel implant, but softer than a cohesive gel implant.

scholarly journals On the role of surface diffusion in determining the shape or morphology of noble-metal nanocrystals

2013 ◽  
Vol 110 (17) ◽  
pp. 6669-6673 ◽  
Author(s):  
X. Xia ◽  
S. Xie ◽  
M. Liu ◽  
H.-C. Peng ◽  
N. Lu ◽  
...  
Keyword(s):  
Surface Diffusion ◽  
Noble Metal ◽  
Metal Nanocrystals

Shape Stability of Magnetic Fluid

1985 ◽  
Vol 1 (7) ◽  
pp. 806-807 ◽  
Author(s):  
H. Miyajima ◽  
Y. Kurihara ◽  
S. Chikazumi
Keyword(s):  
Magnetic Fluid ◽  
Shape Stability

Isotope effect of methane adsorbed on fcc metal (111) surfaces

2021 ◽  
pp. 138943
Author(s):  
Septia Eka Marsha Putra ◽  
Yoshitada Morikawa ◽  
Ikutaro Hamada
Keyword(s):  
Isotope Effect ◽  
Fcc Metal
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