台灣空調用電量占建築物總用電量 43%，照明用電量約佔 26%。加裝節能玻璃於建築物上是節約用電的有效方法之一，只是市面上節能玻璃有許多缺點，包括材料選擇性不高、設計參數不多以及玻璃變厚重等。因此，本研究在玻璃上製作奈米金屬結構作為節能玻璃，同時改善上述的缺點。此節能玻璃利用金屬材料、厚度、形狀及孔徑大小等組合，實現波長選擇性的效果，不僅設計參數更加多元化、玻璃增加的重量微乎其微，甚至能搭配市面上產品，達到更佳的節能效果。
本研究分為設計、製作與量測三個部分：首先，使用基因演算法和全因子實驗設計節能玻璃；接著，透過奈米微影製程在玻璃上製作出金屬結構；最後，再量測正向入射的方向-方向及方向-半球穿透率，並針對頻譜上的特殊輻射性質，討論其物理機制。結果顯示，本研究製作出的樣本在紫外光區(波長 300 – 380 nm)的穿透率趨近於 0；在可見光區(波長 380 – 780 nm)的穿透率隨波長增加而逐漸上升，最高可達 0.69；在近紅外光區(波長 780 – 2500 nm)的穿透率隨著波長增加而逐漸遞減，最低可達0.14，主要影響頻譜特徵的物理機制有繞射現象和表面電漿共振。量測頻譜成功證實文中開發樣本具有減少紫外光與紅外光穿透進室內，並允許可見光通過的節能玻璃特性。

Installing energy-saving glass in buildings is one of the effective methods to save electricity, but there are three disadvantages in commercial energy-saving glass: (1) the material selectivity is less; (2) the design parameters are few; (3) the glass becomes thick. In order to improve these disadvantages, the present study fabricates nanoscale metal structures on glass to form energy-saving glass. This energy-saving glass successfully presents wavelength-selectivity through metal material, thickness, shape, and pore size. It is not only having more design parameters than commercial products, but also increasing very little weight on glass. Moreover, it can be combined with commercial products to achieve better energy-saving effect.
There are three steps in this study. First, using Genetic algorithm and Full-factorial experiments to design energy-saving glass. Second, fabricating metal structures on glass with nanoimprint lithography. Third, measuring its direction-directional and direction-hemispherical transmittance at normal incidence. The results show that: (1) the sample’s transmittance is close to zero in ultraviolet region (300 – 380 nm); (2) the sample’s transmittance is gradually increasing as wavelength increases in visible region (380 – 780 nm), and the maximum is 0.69; (3) the sample’s transmittance is gradually decreasing as wavelength increases in near infrared region (780 – 2500 nm), and the minimum is 0.14. The transmittance spectrum successfully confirm that the sample developed in this study have the property of energy-saving glass which reduces ultraviolet and infrared light into the room, but allows visible light pass through the indoor.

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