Shape transformations of Pt nanocrystals enclosed with high-index facets and low-index facets

CrystEngComm ◽  
2021 ◽  
Vol 23 (38) ◽  
pp. 6655-6660
Author(s):  
Chi Xiao ◽  
Na Tian ◽  
Wei-Ze Li ◽  
Xi-Ming Qu ◽  
Jia-Huan Du ◽  
...  
Keyword(s):  
Potential Method ◽  
High Index ◽  
Shape Transformation ◽  
Square Wave ◽  
Wave Potential ◽  
Shape Transformations ◽  
Pt Nanocrystals

Shape transformation between high-index faceted Pt nanocrystals and low-index faceted ones have been achieved by an electrochemical square-wave potential method.

Improving the Performance of Platinum Nanocrystal Catalysts by Square-wave Potential Electrochemical Pretreatment

Fuel Cells ◽  
2010 ◽  
Vol 10 (3) ◽  
pp. 384-389 ◽  
Author(s):  
L. Zheng ◽  
J. Sun ◽  
L. Xiong ◽  
R. Jin ◽  
J. Li ◽  
...  
Keyword(s):  
Square Wave ◽  
Wave Potential ◽  
Electrochemical Pretreatment

scholarly journals Effect of Solvents on the Quantum Efficiency of Rubrene Electrogenerated Chemiluminescence

1973 ◽  
Vol 51 (20) ◽  
pp. 3467-3472 ◽  
Author(s):  
A. Pighin
Keyword(s):  
Quantum Efficiency ◽  
Electrogenerated Chemiluminescence ◽  
Side Reactions ◽  
Precise Method ◽  
Square Wave ◽  
Wave Potential ◽  
Effect Of Solvents

A simple and precise method for measuring the efficiency of electrogenerated chemiluminescence (e.g.c.l.) in terms of photons/(Faradaic electron)(Φcoul) is described and applied to rubrene e.g.c.l. A symmetrical square wave potential having a frequency of 20–1000 Hz was employed to produce the e.g.c.l. The electrogenerated ion radicals were shown to be completely stable at these frequencies; consequently, Φcoul was determined in the absence of side reactions. Change of solvent from N,N-dimethylformamide (DMF) to equivolume benzene-DMF resulted in an increase in Φcoul from 0.67 to 1.21% at 20 Hz. Φcoul decreased with increasing frequency. Varying the electrolyte (tetra-n-butylammonium perchlorate, TBAP) concentration did not affect Φcoul.

SHAPE TRANSFORMATION MODELS AND THEIR APPLICATIONS IN PATTERN RECOGNITION

1990 ◽  
Vol 04 (01) ◽  
pp. 65-94 ◽  
Author(s):  
Z.C. LI ◽  
Y.Y. TANG ◽  
T.D. BUI ◽  
C.Y. SUEN
Keyword(s):  
Pattern Recognition ◽  
Chinese Characters ◽  
Computer Algorithms ◽  
Transformation Models ◽  
Shape Transformation ◽  
Geometric Properties ◽  
Shape Transformations ◽  
Computer Recognition ◽  
Theoretical Analyses

This paper presents linear and bilinear shape transformations including basic transformations, analyzes their geometric properties, and provides computer algorithms. The shape transformations can be used to simplify the recognition of Roman letters, Chinese characters and other pictorial patterns by normalizing their shapes to the standard forms. Important theoretical analyses have been performed to illustrate that the linear and bilinear transformations are applicable to computer recognition of digitized patterns. A number of pictorial examples have been computed to confirm the analyses and conclusions made.

Innovative Building Forms Determined by Orthotropic Properties of Folded Sheets Transformed Into Roof Shells

2020 ◽  
Vol 61 (2) ◽  
pp. 111-124
Author(s):  
Aleksandra Prokopska ◽  
Jacek Abramczyk
Keyword(s):  
Computational Models ◽  
High Sensitivity ◽  
Free Form ◽  
Shape Transformation ◽  
Steel Sheets ◽  
Shape Transformations ◽  
Thin Walled ◽  
Orthotropic Properties ◽  
Roof Shells ◽  
Qualitative And Quantitative Characteristics

Qualitative and quantitative characteristics of geometrical and mechanical changes of nominally plane steel sheets folded in one direction, caused by big elastic shape transformations were invented on the basis of the authors' tests, analyzes and computational models of thin-walled folded sheets transformed into shell shapes. Both geometrical and mechanical changes produce significant restrictions in using sheets for shell forms. The deliberate transformations and sheets' characteristics are required to obtain attractive and innovative forms of roof shells and their consistent structures as well as entire buildings. The search for effective solutions related to free forms of buildings and shape transformations of sheets especially in the fields of: shape transformation, effort and stabilization of their walls is necessary due to the high sensitivity of thin-walled open profiles to boundary conditions and loads. A method for shaping such free form buildings that effectively exploit specific orthotropic properties of the transformed sheeting is presented.

Swift heavy ion irradiation of Pt nanocrystals: I. shape transformation and dissolution

2011 ◽  
Vol 44 (15) ◽  
pp. 155401 ◽  
Author(s):  
R Giulian ◽  
L L Araujo ◽  
P Kluth ◽  
D J Sprouster ◽  
C S Schnohr ◽  
...  
Keyword(s):  
Ion Irradiation ◽  
Heavy Ion ◽  
Shape Transformation ◽  
Swift Heavy Ion Irradiation ◽  
Heavy Ion Irradiation ◽  
Swift Heavy Ion ◽  
Pt Nanocrystals
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