Cancelation of acoustic scattering from a smart hybrid ERF/PZT-based double‐wall composite spherical shell structure

2021 ◽  
pp. 1-22
Author(s):  
Seyyed M. Hasheminejad ◽  
Ali Jamalpoor
Keyword(s):  
Spherical Shell ◽  
Shell Structure ◽  
Acoustic Scattering ◽  
Double Wall

scholarly journals Improvement in Luminous Efficacy and Thermal Performance Using Quantum Dots Spherical Shell for White Light Emitting Diodes

Nanomaterials ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 618 ◽  
Author(s):  
Songmao Chen ◽  
Caiman Yan ◽  
Yong Tang ◽  
Jiasheng Li ◽  
Xinrui Ding ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Spherical Shell ◽  
Thermal Performance ◽  
White Light ◽  
Shell Structure ◽  
Light Emitting Diodes ◽  
Planar Structure ◽  
Luminous Efficacy ◽  
Light Emitting ◽  
White Light Emitting Diodes

White light-emitting diodes (WLEDs) based on quantum dots (QDs) are gaining increasing attention due to their excellent color quality. QDs films with planar structure are universally applied in WLEDs for color conversion, while they still face great challenges in high light extraction and thermal stability. In this study, a QDs film with a spherical shell structure was proposed to improve the optical and thermal performance for WLEDs. Compared with the conventional planar structure, the luminous efficacy of the QDs spherical shell structure is improved by 12.9% due to the reduced total reflection effect, and the angular-dependent correlated color temperature deviation is decreased from 2642 to 283 K. Moreover, the highest temperature of the WLED using a QDs spherical shell is 4.8 °C lower than that of the conventional WLED with a planar structure, which is mainly attributed to larger heat dissipation area and separated heat source. Consequently, this QDs spherical shell structure demonstrates superior performance of QDs films for WLEDs applications.

Research on numerical welding experiment of a thick spherical shell structure

2008 ◽  
Vol 7 (2) ◽  
pp. 69-76
Author(s):  
Xiang-dong Liu ◽  
Xiong-liang Yao ◽  
Fu-zhen Pang
Keyword(s):  
Spherical Shell ◽  
Shell Structure

scholarly journals 2055) Stress Analysis of Locally Loaded Spherical Shell(Structure)

1959 ◽  
Vol 63.1 (0) ◽  
pp. 453-456
Author(s):  
Yoshikatsu Tsuboi ◽  
Kinji Akino ◽  
Shigeya Kawamata ◽  
Kyeong Chyeong
Keyword(s):  
Spherical Shell ◽  
Stress Analysis ◽  
Shell Structure

Decay Modes of 180–194Hg Nuclei — A New Possibility of Deformed Daughter Radioactivity

1997 ◽  
Vol 12 (24) ◽  
pp. 1775-1781 ◽  
Author(s):  
Raj K. Gupta ◽  
Dharm Bir ◽  
Sharda Dhaulta
Keyword(s):  
Spherical Shell ◽  
Shell Structure ◽  
Shell Closure ◽  
Decay Modes ◽  
Shell Closures ◽  
Experimental Facilities ◽  
Almost All

Cluster decays of both the normal deformed and superdeformed mercury nuclei ranging from 180 Hg to 194 Hg are studied. It is shown that they are all α-emitters, the superdeformed parents being poorer α-emitters. Also, though almost all the superdeformed 190–194 Hg nuclei are stable against all the heavier clusters, the normal deformed 180–188 Hg nuclei present measurable instabilities against 8 Be and 12 C clusters. The 8 Be and 12 C decays of 180 Hg with T1/2 ~ 1023–1028 s offer as best cases for measurements with the present-day experimental facilities. More significant decays are [Formula: see text] and [Formula: see text], and perhaps also [Formula: see text], which all exhibit shell structure effects and hence predict deformed shell closures at Z=76 or 74 and N=100–104 referring to daughter nuclei. The very stable nature of superdeformed 190–194 Hg parents stresses the presence of (spherical) shell closures at N=110–114 and the very unstable nature of normal deformed 188 Hg parent suggests no (spherical/deformed) shell closure at N=108.

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