Stretchable plasmonic substrate with tunable resonances for surface-enhanced Raman spectroscopy
Stretchable plasmonic substrate with tunable resonances for surface-enhanced Raman spectroscopy
复制标题
用于表面增强拉曼光谱的具有可调谐共振的可拉伸等离激元基底
DOI：
10.1088/2040-8978/17/11/114015
复制
发表时间：
2015-11-01
影响因子：
2.1
通讯作者：
Chen, Jian
中科院分区：
文献类型：
--
作者：
Wen, Jinxiu;Zhang, Hongbo;Chen, Jian
透明和灵活的功能纳米结构对于可折叠显示器、手持便携式设备和可穿戴电子设备等柔性电子设备非常重要，近年来引起了越来越多的科学和工业兴趣。我们通过将等离子体纳米结构共轭到聚二甲基硅氧烷（PDMS）弹性体表面，制备了一种灵活的杂化结构。这种灵活的杂化体能够显著增强小分子的拉曼散射。最有趣的是，我们发现利用PDMS优异的灵活性，混合结构的等离子共振可以很容易地通过外部压缩力进行调谐。这允许进一步增强拉曼散射剪裁的杂化结构的等离子体与入射激光共振。我们相信这些特性可以使这种混合结构成为一种优秀的、灵活的SERS基板，在生命科学、医学和食品安全传感应用中具有重要意义。
Transparent and flexible functional nanostructures are very important for flexible electronic devices, such as roll-up displays, handheld portable devices, and wearable electronics, and have attracted growing scientific and industrial interest in recent years. We produced a facile and flexible hybrid structure by conjugating plasmonic nanostructures onto the surface of a poly (dimethylsiloxane) (PDMS) elastomer. Such flexible hybrids were able to remarkably enhance Raman scattering from small molecules. Most interestingly, we showed that by taking advantage of the excellent flexibility of the PDMS, the plasmonic resonances of the hybrid structure could be easily tuned via external compression force. This allows for further enhancing the Raman scattering by tailoring the plasmon of the hybrid structure in resonance with the incidence laser. We believe that these properties can make the hybrid structure an excellent, flexible SERS substrate that will be of great importance in life science, medicine, and food security sensing applications.