State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, People's Republic of China; School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, People's Republic of China.
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, People's Republic of China; School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, People's Republic of China.
Spectrochim Acta A Mol Biomol Spectrosc. 2022 Nov 15;281:121626. doi: 10.1016/j.saa.2022.121626. Epub 2022 Jul 14.
With the rapid development of trace detection, high-performance flexible surface-enhanced Raman scattering (SERS) substrates have enjoyed steady growth of interest. In this paper, a facile method to improve the robustness of the flexible SERS substrate via the synergistic effect of rigid SiO nanospheres and flexible tape was demonstrated for the first time. In detail, the spin-coated SiO nanosphere monolayer was transferred from the host silicon wafer into the tape by peeling-off process, followed by O plasma etching of tape polymer to expose the nanospheres, and final Au coating to form plentiful SERS "hotspots". The as-prepared SERS sample shows a detection limit of Rhodamine 6G (R6G) down to 10 M and can afford a 500 times bending-releasing cyclic test. Our research provides a promising strategy to prepare robust SERS substrates which exhibit good potential in practical molecule detection on curved surfaces.
随着痕量检测技术的飞速发展，高性能柔性表面增强拉曼散射（SERS）衬底受到了越来越多的关注。本文首次提出了一种通过刚性 SiO2 纳米球和柔性胶带的协同作用来提高柔性 SERS 衬底稳定性的简便方法。具体来说，通过剥离工艺将旋涂的 SiO2 纳米球单层从衬底硅片转移到胶带上，然后对胶带聚合物进行 O 等离子体刻蚀以暴露纳米球，最后进行 Au 镀膜以形成大量 SERS“热点”。所制备的 SERS 样品对 Rhodamine 6G（R6G）的检测限低至 10-10 M，并且可以承受 500 次弯曲-释放循环测试。我们的研究为制备稳定的 SERS 衬底提供了一种有前途的策略，这种衬底在曲面上的实际分子检测中具有良好的应用潜力。
