periodic strip
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2021 ◽  
Vol 7 (12) ◽  
pp. 155
Author(s):  
Zorayda Lazcano-Ortiz ◽  
Cesar L. Ordóñez-Romero ◽  
Jorge Luis Domínguez-Juárez ◽  
Guillermo Monsivais ◽  
Rafael Quintero-Torres ◽  
...  

In this article, we describe a magnonic crystal formed by magnetite nanoparticles. The periodic strip-like structure of the nanoparticles was fabricated on the surface of thin yttrium iron garnet single-crystal film grown on a gallium–gadolinium garnet substrate via dip-coating techniques. It was shown that such periodic structure induces the formation of the bandgaps in the transmission spectra of magnetostatic surface spin-waves (MSSW). The structure was simulated by the transfer matrix method. Spin-wave detection has been carried out by using a pair of microwave antennas and a vector network analyzer.


Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 715
Author(s):  
Fan Chu ◽  
Di Wang ◽  
Chao Liu ◽  
Lei Li ◽  
Qiong-Hua Wang

We propose a multi-view 2D/3D switchable display by using cylindrical liquid crystal (LC) lens array with a low operating voltage and fast response time. The cylindrical LC lens array is composed of three parts: the LC layer, a top-plane indium tin oxide (ITO) electrode, and bottom periodic strip ITO electrodes. In the voltage-off state, the cylindrical LC lens array is equivalent to a transparent glass substrate and the viewers can see a clear 2D image. In the 3D mode, the cylindrical LC lens array can be used as a cylindrical lens array under a suitable operating voltage. As a result, the 2D and 3D images can be switched according to the state of the cylindrical LC lens array. The experimental result shows that the 2D/3D switchable display with the cylindrical LC lens array has a wider viewing angle, has no moiré pattern, and is much thinner compared to the other 2D/3D switchable display devices.


AIP Advances ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 035325
Author(s):  
Tenglong He ◽  
Shaomeng Wang ◽  
Zhanliang Wang ◽  
Wei Shao ◽  
Duo Xu ◽  
...  

Processes ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 142
Author(s):  
Ming-Jun Liao ◽  
Li-Qiang Duan

Coalescence-induced droplet jumping has received more attention recently, because of its potential applications in condensation heat transfer enhancement, anti-icing and self-cleaning, etc. In this paper, the molecular dynamics simulation method is applied to study the coalescence-induced jumping of two nanodroplets with equal size on the surfaces of periodic strip-like wettability patterns. The results show that the strip width, contact angle and relative position of the center of two droplets are all related to the jumping velocity, and the jumping velocity on the mixed-wettability superhydrophobic surfaces can exceed the one on the perfect surface with a 180° contact angle on appropriately designed surfaces. Moreover, the larger both the strip width and the difference of wettability are, the higher the jumping velocity is, and when the width of the hydrophilic strip is fixed, the jumping velocity becomes larger with the increase of the width of the hydrophobic strip, which is contrary to the trend of fixing the width of the hydrophobic strip and altering the other strip width.


2020 ◽  
Vol 41 (7) ◽  
pp. 785-795 ◽  
Author(s):  
Tenglong He ◽  
Xinyi Li ◽  
Zhanliang Wang ◽  
Shaomeng Wang ◽  
Zhigang Lu ◽  
...  

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