Distinct dynamics of self-propelled bowl-shaped micromotors caused by shape effect: Concave vs convex

2021 ◽  
Vol 33 (12) ◽  
pp. 122004
Author(s):  
Duo Wang ◽  
Dongshi Guan ◽  
Jinghong Su ◽  
Xu Zheng ◽  
Guoqing Hu
Keyword(s):  
Shape Effect

Shape Effect of Zinc-Tin Oxide Nanostructures on Photodegradation of Methylene Blue and Rhodamine B under UV and Visible Light

2021 ◽  
Vol 4 (2) ◽  
pp. 1149-1161 ◽  
Author(s):  
Ana Rovisco ◽  
Rita Branquinho ◽  
Jonas Deuermeier ◽  
Tomás Freire ◽  
Elvira Fortunato ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Tin Oxide ◽  
Rhodamine B ◽  
Shape Effect ◽  
Oxide Nanostructures ◽  
Zinc Tin Oxide

scholarly journals Anomalous shape effect of nanosized helium bubble on the elastic field in irradiated tungsten

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xinlong Huang ◽  
Chenyangtao Lv ◽  
Haijian Chu
Keyword(s):  
Normal Stress ◽  
Elastic Field ◽  
Elastic Response ◽  
Shape Effect ◽  
Triple Junctions ◽  
Equilibrium Pressure ◽  
Bubble Pressure ◽  
Mechanism Transition ◽  
Geometry Characteristic ◽  
Anomalous Shape

AbstractBubble pressure and elastic response in helium-irradiated tungsten are systematically investigated in this study. An anomalous shape effect is found that the radial normal stress and mean stress distributions around a nanosized void or bubble are far from the spherical symmetry, which is ascribed to polyhedral geometry characteristic of the nanosized bubble and physical mechanism transition from crystal surfaces dominated to the surface ledges and triple junctions dominated. Molecular simulation shows that Young–Laplace equation is not suitable for directly predicting equilibrium pressure for nanosized bubble in crystals. Consequently, a new criterion of average radial normal stress of spherical shell is proposed to polish the concept of equilibrium pressure of helium bubbles. Moreover, the dependences of bubble size, temperature and helium/vacancy ratio (He/Vac ratio) on the bubble pressure are all documented, which may provide an insight into the understanding of mechanical properties of helium-irradiated tungsten.

Transition shape effect in the transients generated by a Programmable Josephson Voltage Standard

CPEM 2010 ◽  
2010 ◽  
Author(s):  
B. Jeanneret ◽  
F. Overney ◽  
A. Rufenacht ◽  
J. Nissila
Keyword(s):  
Shape Effect ◽  
Voltage Standard

Composite rebars shape effect in reinforced structures

2005 ◽  
Vol 67 (1) ◽  
pp. 19-26 ◽  
Author(s):  
Fethi Kadioglu ◽  
Ramana M. Pidaparti
Keyword(s):  
Shape Effect

scholarly journals Shape Effect on the Temperature Field during Microwave Heating Process

2018 ◽  
Vol 2018 ◽  
pp. 1-24 ◽  
Author(s):  
Zhijun Zhang ◽  
Tianyi Su ◽  
Shiwei Zhang
Keyword(s):  
Electromagnetic Field ◽  
Heat Conduction ◽  
Temperature Distribution ◽  
Microwave Cavity ◽  
Heating Process ◽  
Shape Effect ◽  
Power Absorption ◽  
Sample Shape ◽  
Distribution Uniformity ◽  
Microwave Process

Aiming at improving the food quality during microwave process, this article mainly focused on the numerical simulation of shape effect, which was evaluated by microwave power absorption capability and temperature distribution uniformity in a single sample heated in a domestic microwave oven. This article only took the electromagnetic field and heat conduction in solid into consideration. The Maxwell equations were used to calculate the distribution of microwave electromagnetic field distribution in the microwave cavity and samples; then the electromagnetic energy was coupled as the heat source in the heat conduction process in samples. Quantitatively, the power absorption capability and temperature distribution uniformity were, respectively, described by power absorption efficiency (PAE) and the statistical variation of coefficient (COV). In addition, we defined the comprehensive evaluation coefficient (CEC) to describe the usability of a specific sample. In accordance with volume or the wave numbers and penetration numbers in the radial and axial directions of samples, they can be classified into different groups. And according to the PAE, COV, and CEC value and the specific need of microwave process, an optimal sample shape and orientation could be decided.

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