Size-dependent melting thermodynamic properties of selenium nanowires in theory and experiment

CrystEngComm ◽  
2019 ◽  
Vol 21 (3) ◽  
pp. 430-438 ◽  
Author(s):  
Jianhua Zhang ◽  
Qingshan Fu ◽  
Zixiang Cui ◽  
Yongqiang Xue
Keyword(s):  
Thermodynamic Properties ◽  
Size Effect ◽  
Core Shell ◽  
Size Dependent ◽  
Selenium Nanowires ◽  
Melting Thermodynamics ◽  
Theory And Experiment

A new core–shell melting model of nanowires was proposed to explain the size effect on the melting thermodynamics of nanowires.

Size-dependent melting thermodynamics of nanorods in theory and experiment

2019 ◽  
Vol 21 (48) ◽  
pp. 26549-26556 ◽  
Author(s):  
Xinru Song ◽  
Hongxing Li ◽  
Zixiang Cui ◽  
Yongqiang Xue ◽  
Jianhua Zhang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Size Dependent ◽  
Melting Thermodynamics ◽  
Theory And Experiment

Compared with other morphological nanomaterials, nanorods have many unique properties that are closely related to their thermal stability.

Thermodynamic Properties of the Core/Shell Antiferromagnetic Ising Nanocube

2015 ◽  
Vol 28 (10) ◽  
pp. 3127-3133 ◽  
Author(s):  
M. El Hamri ◽  
S. Bouhou ◽  
I. Essaoudi ◽  
A. Ainane ◽  
R. Ahuja ◽  
...  
Keyword(s):  
Thermodynamic Properties ◽  
Core Shell ◽  
The Core

Thermodynamic properties and hysteresis loops in a hexagonal core-shell nanoparticle

2021 ◽  
pp. 107967
Author(s):  
Si-yu Wang ◽  
Dan Lv ◽  
Zhen-yu Liu ◽  
Wei Wang ◽  
Jia Bao ◽  
...  
Keyword(s):  
Thermodynamic Properties ◽  
Hysteresis Loops ◽  
Core Shell

Modeling size-dependent thermal-mechanical behaviors of shape memory polymer Timoshenko micro-beam

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Fei Zhao ◽  
Xueyao Zheng ◽  
Shichen Zhou ◽  
Bo Zhou ◽  
Shifeng Xue
Keyword(s):  
Size Effect ◽  
Shape Memory ◽  
Couple Stress Theory ◽  
Shape Memory Polymer ◽  
Modified Couple Stress Theory ◽  
Mechanical Behaviors ◽  
Equilibrium Equations ◽  
Content Type ◽  
Size Dependent ◽  
Beam Height

PurposeIn this paper, a three-dimensional size-dependent constitutive model of SMP Timoshenko micro-beam is developed to describe the micromechanical properties.Design/methodology/approachAccording to the Hamilton's principle, the equilibrium equations and boundary conditions of the model are established and according to the modified couple stress theory, the model is available to capturing the size effect because of the material length scale parameter. Based on the model, the simply supported beam was taken for example to be solved and simulated.FindingsResults show that the size effect of SMP micro-beam is more obvious when the dimensionless beam height is similar or the larger of the value of loading time. The rigidity and strength of the SMP beam decrease with the increasing of the dimensionless beam height or the loading time. The viscous property of SMP micro-beam plays a more important role with the larger dimensionless beam height. And the smaller the dimensionless beam height is, the more obvious the shape memory effect of the SMP micro-beam is.Originality/valueThis work implies prediction of size-dependent thermo-mechanical behaviors of the SMP micro-beam and will provide a theoretical basis for design SMP microstructures in the field of micro/nanomechanics.

scholarly journals Size effect on thermodynamic properties of free nanocrystals

2008 ◽  
Vol 66 (3) ◽  
pp. 375-383 ◽  
Author(s):  
A. I. Karasevskii ◽  
V. V. Lubashenko
Keyword(s):  
Thermodynamic Properties ◽  
Size Effect

Static Analysis of Electrically Actuated Nano to Micron Scale Beams Using Nonlocal Theory

2011 ◽  
Author(s):  
Y. Alizadeh Vaghasloo ◽  
Abdolreza Pasharavesh ◽  
M. T. Ahmadian ◽  
Ali Fallah
Keyword(s):  
Size Effect ◽  
Algebraic Equation ◽  
Bending Moment ◽  
Nonlocal Theory ◽  
Nonlinear Ordinary Differential Equation ◽  
Beam Deflection ◽  
Electrostatically Actuated ◽  
Size Dependent ◽  
Electrically Actuated ◽  
The One

In this paper, size dependent static behavior of micro and nano cantilevers actuated by a static electric field including deflection and pull-in instability, is analyzed implementing nonlocal theory. Euler-bernoulli assumptions are made to model the relation between deflection of the beam and bending moment. Differential form of the constitutive equation of nonlocal theory is used to find the revised equation for bending moment and substituting in the equilibrium equation of electrostatically actuated beams final nonlinear ordinary differential equation is arrived. Also the boundary conditions for solving the equation are revised and to analyze the size effect better governing equation is nondimetionalized. The one parameter Galerkin method is used to transform this equation to a nonlinear algebraic equation. Arrived algebraic equation is solved utilizing Newton-Raphson method. Size effect on the maximum deflection and deflection shape for various applied voltages is studied. Also effect of beam size on the static pull-in voltage is studied. Results indicate that the dimensionless beam deflection decreases as size decreases while the pull-in voltage increases and specially change of deflection and pull-in voltage is significant for nanobeams.

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