ブロックコポリマーテンプレートへの極低温斜方蒸着による金ナノキラル構造の製作

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  • Au nano chiral structures fabricated by block copolymer and iced glancing angle deposition

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<p>This paper reports on A single-layer circular dichroic filter in visible light region. A clear Au nano chiral structures were fabricated by combining block copolymer nano dot array template and iced glancing angle deposition, and transferred to a PDMS film to achieve circular dichroic filter. The Au nano spiral had 70-nm-diameter, 80-nm-hight, and a single turn. This filter showed a very large circular dichroism of 518 mdeg at a wavelength of 717 nm. The optical characteristics of the device were evaluated using a circular dichroism spectrometer (J-720W) of JASCO. There was a tendency to form an independent chiral structure more easily than the condition that did not use the dot template reported in the past, and circular dichroism improved more than 17 times. This single-layer and thin film has optical characteristics with the same strength as the circular dichroic filter of the previous research.</p>

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