2009-08-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/699060摘要：藉由適當激發，金屬與介質交界面可產生表面電漿波動，其對應之能量子稱為表面電漿子。這種表面波動現象常導致甚大之局部電場強度，而有許多奈米光子學上的應用，故近年來深受研究者重視。本計畫擬持續探討金屬奈米結構中之表面電漿子理論，一方面從事正問題，改進數值方法以精確分析表面電漿子之特性；一方面亦從事逆問題，設計或合成適當之金屬奈米結構，以充分利用表面電漿子之特性，使其達到特定的效益，例如提高置於金屬奈米結構附近之光源之發光效率等。數值模擬包括以邊界積分方程法計算電磁場、以模擬退火法合成金屬奈米結構等。本計畫的理論與模擬除有助於瞭解金屬奈米結構之表面電漿子理論外，更可發展其在奈米光子學上的應用。<br> Abstract: By proper excitation, the surface plasma wave can be induced on the interface between metal and dielectric media. The corresponding energy quantum is called the surface plasmon. The concomitant localized high electric field intensity may lead to applications in nanophotonics. Therefore, the study on surface plasmons has become an important research topic recently. In this proposal, we continue to numerically investigate surface plasmons in metallic nanostructures. On one hand, the direct problem is attacked. We use the improved numerical method to accurately analyze the properties of surface plasmons. On the other hand, the inverse problem is also treated. We design or synthesize an appropriate metallic nanostructure, by using the properties of surface plasmons, to attain certain objective, such as to enhance the emission efficiency of a light emitter near the metallic nanostructure. Our numerical simulations include the calculation of the electromagnetic field by the boundary integral equation method, the synthesis of metallic nanostructures by the simulated annealing algorithm, etc. The theoretical and simulated results from this project will be helpful in understanding the theory of surface plasmons in metallic nanostructures and hence developing novel applications in nanophotonics.表面電漿子金屬奈米結構邊界積分方程法模擬退火法surface plasmonmetallic nanostructureboundary integral equation methodsimulated annealing