耐用,可回收和可伸缩的等离子膜用于果腐烂检测
Limei Liu1,2, Tingfeng Dai3,4, Taimin Sun3,4
1College of Mechanical Engineering, Yangzhou University, 196 Huayang West Road, Hanjiang, Yangzhou, Jiangsu, 225127, P. R. China. limeiliu@yzu.edu.cn.
Analytical and bioanalytical chemistry
|August 22, 2025
概括
这项研究开发了一种耐用,灵活的等离子膜,用于使用表面增强拉曼散射 (SERS) 监测水果质量. 这种传感器可以检测葡萄的腐烂,
科学领域:
- 材料科学
- 分析化学
- 食品科学
背景情况:
- 灵活的表面增强拉曼散射 (SERS) 传感器对非破坏性水果质量监测具有前景.
- 目前的SERS基板缺乏长期农业储存所需的运行稳定性.
研究的目的:
- 开发一种耐用,可回收和可拉伸的等离子膜,用于检测葡萄的腐烂.
- 评估传感器的灵敏度,机械弹性和长期稳定性.
主要方法:
- 通过在PDMS中嵌入银纳米线并使用金纳米颗粒来制造复合膜 (Au@AgNWs/PDMS).
- 使用罗达胺6G测试SERS敏感性,机械应变耐受性和随时间变化的稳定性.
- 在葡萄果表面追踪真菌生物标志物以与腐烂相关.
主要成果:
- Au@AgNWs/PDMS薄膜表现出高灵敏度 (10−9M),85%的拉伸应变耐受性和49天的稳定性.
- 基板通过1000个拉伸周期和5个再生周期保持稳定的SERS性能.
- 在现场成功检测真菌生物标志物和果腐烂进展的相关性.
结论:
- 开发的等离子膜提供了强大的可重复使用的SERS基板,用于非破坏性的果腐烂监测.
- 这项技术为改善农业储存系统的粮食安全提供了可扩展的解决方案.
- 传感器的耐用性和可重复使用性解决了现有SERS技术在实际应用中的局限性.
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