三維自組裝完美吸收體

超穎材料作為一個能調控電磁效應的材料，在最近眾多的研究中脫穎而出。其中最常見的基本構成單元為裂環共振器。它已經被證實有磁共振，且被用於環型矩共振及非線性光學控制等。而在它之後，立式裂環共振器也出現了，為裂環共振器帶來更多的可能性。而它也被應用於磁致透明效應及異常反射中。儘管關於立式裂環共振器仍有很多的發展可能性，但最大的阻礙不外乎其三維的製程。而這通常需要高精準度的對準技術在諸如電子束或雙光子製程上。但最近，應變工程的製程應用帶來了變化。靠著應變工程，二維結構會自己組裝成三維結構，且變成一立式裂環共振器。我則利用此技術來製作一完美吸收體。而完美吸收體靠著其能夠應用於太陽能電池及對於熱能有更好的控制，已吸引了許多的科學家。它也被證實可做成一擁有高靈敏度或可調控式的完美吸收體。藉由與分子共振的耦合，它甚至能夠打破紅外量測的極限。結合這二種技術，我展示了一個自組裝的完美吸收體。它有著接近完美的吸收能力、無偏振選擇性與在高角度下仍有高吸收力。它彎曲伸入第三維空間的手臂也額外提供了一種可調控性。而這是之前的完美吸收體未能提供的特性。靠著這較易於製作的自組裝技術，相信它會為未來完美吸收體的實現帶來更多的可能性。

關鍵字

完美吸收體；自組裝；超穎材料

並列摘要

Among all the research recently, metamaterial stands out as an extraordinary structure that is capable of modulating electromagnetic properties of light. The most easily seen fundamental unit that makes up metamaterials is the split ring resonator which has been demonstrated magnetic resonance, toroidal resonance and nonlinear control, etc. Later, the advent of vertical split ring resonators have given much more vigor to split ring resonators which have then been used on magnetically induced transparency and anomalous reflection. Although there are still a lot to be done for vertical split ring resonators, the most difficult thing should be the fabrication originating from its three dimensional nature, which often needs alignment of patterning under precise control using electron-beam or two-photon lithography, etc. But recently, the use of strain engineering has come into play. With the use of strain engineering, the two-dimensional pattern will assemble into three-dimensional structure itself and becomes vertical split ring resonators. I then use it to make a device called perfect absorber which attracts scientists on the use of solar cells or a more effective control on thermal energy, etc. It's also shown to be a powerful sensor of high sensitivity or tunable capability. With the coupling with the molecular resonance, it can even break the detection limit of the infrared detection. With the combination of these two techniques, a self-assembly perfect absorber is demonstrated. It shows nearly perfect absorption, polarizaiton independence and high absorption even under a wide incident angle. Its curving arms into the third dimension provide an extra tunability on perfect absorbers that others are unable to show. Because of the easier control of self-assembly fabrication process it uses, it's sure to pave another bright way toward the implementations of perfect absorbers.

並列關鍵字

perfect absorber ； self-assembly ； metamaterial

參考文獻

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[87] Wikipedia, Wolfgang pauli, https://en.wikipedia.org/wiki/Wolfgang Pauli.

國際替代計量

三維自組裝完美吸收體

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