灵活,可伸缩和单分子敏感的SERS活性传感器用于可穿戴生物传感应用
Muhammad Aminul Haque Chowdhury1, Nishat Tasnim1, Mainul Hossain1
1Department of Electrical and Electronic Engineering, University of Dhaka Dhaka-1000 Bangladesh mahabib@du.ac.bd.
RSC advances
|July 13, 2023
概括
研究人员开发了一种新的灵活,单分子敏感的传感器,使用等离子金属表面. 这种可穿戴设备实现了极高的拉曼散射增强因子,用于先进的远程患者监测和个性化医疗.
科学领域:
- 生物医学技术 生物医学技术
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 可穿戴式传感器正在彻底改变远程患者监控和个性化医疗.
- 等离子元表面增强了拉曼散射信号,显示了可穿戴传感器应用的前景.
- 开发灵活,灵敏,易于制造的超表面仍然是一个重大挑战.
研究的目的:
- 提出一种新的可穿戴设备:一个灵活的,可拉伸的,单分子敏感的表面增强拉曼散射 (SERS) 活性传感器.
- 为了解决长期以来在生物传感中对高性能,可适应的超表面的需求.
- 展示一个可行的平台,用于先进的个性化医学和远程健康监测.
主要方法:
- 使用聚二甲基 (PDMS) 基板制造SERS活性传感器,以提高灵活性.
- 传感器性能的表征,包括其增强因子,散射与吸收比,以及热点体积.
- 数字模拟以评估传感器在机械应力 (曲和拉伸) 下的可靠性.
主要成果:
- 取得了前所未有的SERS增强因子,约为1011.
- 证明了高的散射与吸收比 (∼2.5) 和大热点体积 (40 nm × 40 nm × 5 nm).
- 在曲 (高达100°) 和拉伸 (高达50%) 条件下确认可靠的SERS性能.
结论:
- 提出的灵活和可拉伸的SERS传感器提供了卓越的灵敏度和性能.
- 它的易于制造和适应性使其成为可穿戴诊断设备的有希望的候选人.
- 这项技术为个性化医疗和远程患者监控的进步铺平了道路.
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