scholarly journals ANALYZING SHELL STRUCTURE FROM BABYLONIAN AND MODERN TIMES

2004 ◽  
Vol 13 (01) ◽  
pp. 247-260
Author(s):  
LIS BRACK-BERNSEN ◽  
MATTHIAS BRACK
Keyword(s):  
Quantum Dots ◽  
Fourier Analysis ◽  
Periodic Orbits ◽  
Shell Structure ◽  
Metal Clusters ◽  
The Moon ◽  
Modern Times ◽  
Fermion Systems

We investigate "shell structure" from Babylonian times: periodicities and beats in computer-simulated lunar data corresponding to those observed by Babylonian scribes some 2500 years ago. We discuss the mathematical similarity between the Babylonians' recently reconstructed method of determining one of the periods of the moon with modern Fourier analysis and the interpretation of shell structure in finite fermion systems (nuclei, metal clusters, quantum dots) in terms of classical closed or periodic orbits.

scholarly journals Periodic orbits and shell structure in octupole deformed potentials

1995 ◽  
Vol 51 (3) ◽  
pp. 1874-1884 ◽  
Author(s):  
W. D. Heiss ◽  
R. G. Nazmitdinov ◽  
S. Radu
Keyword(s):  
Periodic Orbits ◽  
Shell Structure

Synthesis and Photoluminescent Properties of Core/Shell Structure ZnS∶Cu/ZnS Quantum Dots

2012 ◽  
Vol 33 (7) ◽  
pp. 736-741 ◽  
Author(s):  
田昕 TIAN Xin ◽  
曹立新 CAO Li-xin ◽  
柳伟 LIU Wei ◽  
苏革 SU Ge ◽  
董博华 DONG Bo-hua
Keyword(s):  
Quantum Dots ◽  
Shell Structure ◽  
Core Shell ◽  
Core Shell Structure

Semiconductor quantum dots through conversion of micelle-generated metal clusters

2009 ◽  
Vol 95 (9) ◽  
pp. 093105
Author(s):  
D. Wahl ◽  
A. Ladenburger ◽  
M. Feneberg ◽  
W. Schoch ◽  
K. Thonke ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Metal Clusters ◽  
Semiconductor Quantum Dots

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.

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