Large‐Scale Highly Ordered Chitosan‐Core Au‐Shell Nanopatterns with Plasmonic Tunability: A Top‐Down Approach to Fabricate Core–Shell Nanostructures |
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Authors: | Youn‐Kyoung Baek Seung Min Yoo Taejoon Kang Hwan‐Jin Jeon Kyounghwan Kim Ji‐Sun Lee Sang Yup Lee Bongsoo Kim Hee‐Tae Jung |
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Affiliation: | 1. Department of Chemical and Biomolecular Eng. (BK‐21), Korea Advanced Institute of Science and Technology, Daejeon 305–701, Korea;2. Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 305–701, Korea |
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Abstract: | A new strategy for fabricating highly ordered chitosan–Au core–shell nanopatterns with tunable surface plasmon resonance (SPR) properties is developed. This strategy combines fabrication of a chitosan nanopattern by using a soft‐nanoimprint technique with selective deposition of Au nanoparticles onto the patterned chitosan surface. The SPR response can be tuned by controlling the features of the resulting Au shell/polymer hybrid pattern, which makes these materials potentially useful in ultrasensitive optical sensors for molecular detection. |
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Keywords: | core/shell nanoparticles chitosan nanopatterns surface plasmon resonance surface‐enhanced Raman scattering |
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