scholarly journals UMPa: A multi-objective, multi-level partitioner for communication minimization

2013 ◽  
pp. 53-65 ◽  
Author(s):  
Ümit Çatalyürek ◽  
Mehmet Deveci ◽  
Kamer Kaya ◽  
Bora Uçar
Keyword(s):  
Multi Objective ◽  
Multi Level

Multi-objective optimization of two-dimensional phoxonic crystals with multi-level substructure scheme

2016 ◽  
Vol 30 (09) ◽  
pp. 1650046 ◽  
Author(s):  
S. Zhang ◽  
J. Yin ◽  
H. W. Zhang ◽  
B. S. Chen
Keyword(s):  
Optical Devices ◽  
Two Dimensional ◽  
Regular Pattern ◽  
Multi Objective Optimization ◽  
New Materials ◽  
Optomechanical Systems ◽  
Multi Objective ◽  
Design And Synthesis ◽  
Multi Level ◽  
Photonic Band

Phoxonic crystal (PXC) is a promising artificial periodic material for optomechanical systems and acousto-optical devices. The multi-objective topology optimization of dual phononic and photonic max relative bandgaps in a kind of two-dimensional (2D) PXC is investigated to find the regular pattern of topological configurations. In order to improve the efficiency, a multi-level substructure scheme is proposed to analyze phononic and photonic band structures, which is stable, efficient and less memory-consuming. The efficient and reliable numerical algorithm provides a powerful tool to optimize and design crystal devices. The results show that with the reduction of the relative phononic bandgap (PTBG), the central dielectric scatterer becomes smaller and the dielectric veins of cross-connections between different dielectric scatterers turn into the horizontal and vertical shape gradually. These characteristics can be of great value to the design and synthesis of new materials with different topological configurations for applications of the PXC.

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