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Nanoaperture Design in Visible Frequency Range Using Genetic Algorithm and ON/OFF Method Based Topology Optimization Scheme

유전알고리즘 및 ON/OFF 방법을 이용한 가시광선 영역의 나노개구 형상의 위상최적설계

  • 신현도 (연세대학교 기계공학부) ;
  • 유정훈 (연세대학교 기계공학부)
  • Received : 2013.07.29
  • Accepted : 2013.10.14
  • Published : 2013.12.01

Abstract

A genetic algorithm (GA) is an optimization technique based on natural evolution theory to find the global optimal solution. Unlike the gradient-based method, it can design nanoscale structures in the electric field because it does not require sensitivity calculation. This research intends to design a nanoaperture with an unprecedented shape by the topology optimization scheme based on the GA and ON/OFF method in the visible frequency range. This research mainly aims to maximize the transmission rate at a measuring area located 10nm under the exit plane and to minimize the electric distribution at other locations. The finite element analysis (FEA) and optimization process are performed by using the commercial package COMSOL combined with the Matlab programming. The final results of the optimized model are analyzed by a comparison of the electric field intensity and the spot size of near field with those of the initial model.

Keywords

Genetic Algorithm;ON/OFF Method;Transmission Rate;Visible Frequency Range;Surface Plasmon Resonance

Acknowledgement

Supported by : 한국연구재단

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