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对于集成的分离感应微流体平台的Etalon@侧流带.

Mengmeng Zhang1, Arjo J Loeve2, Michael J Serpe3

  • 1Department of Process & Energy, Delft University of Technology, Leeghwaterstraat 39, Delft, 2628 CB, The Netherlands.

Biosensors & bioelectronics
|June 25, 2025
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概括

这项研究将标准传感器集成到膜上,将简单的侧流量测试 (LFA) 转化为定量工具. 这种新的平台通过克服传统定性测试的局限性,实现了敏感的现场检测.

关键词:
商用膜是一种商业膜.标杆标准是指标准.集成的分离传感平台侧向流量检测试验 侧向流量检测试验微流体学 微流体学

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科学领域:

  • 生物医学工程 生物医学工程
  • 分析化学 分析化学
  • 材料科学 材料科学 材料科学

背景情况:

  • 侧流检测 (LFA) 是简单,具有成本效益,并且广泛用于现场定性分析.
  • 由于灵敏度和检测方法的局限性,传统的LFA缺乏定量能力.
  • 埃塔隆传感器通过光学干扰提供高灵敏度和定量检测,但需要光滑的基板.

研究的目的:

  • 开发一个集成的分离感应微流体平台 (EtLFA),增强LFA的定量能力.
  • 为了使在粗的膜基板上制造标准传感器,克服以前的局限性.
  • 用EtLFA平台在模拟血液样本中证明葡萄糖的定量检测.

主要方法:

  • 在商业膜上制造标准传感器,评估传感器灵敏度和表面粗度 (Sa < 0.5 μm,Smr > 90%).
  • 集成一个对葡萄糖敏感的etalon@nylon传感器模块与再生纤维素膜进行分离.
  • 测试平台对模拟红细胞过和量化模拟血液样本中的葡萄糖水平的能力.

主要成果:

  • 建立了用于膜上的功能标准集成的临界表面粗度标准.
  • 证实,在以太龙集成后保持了毛细血管流量和透性,从而保持了净化性能.
  • 对于100mg/dL的葡萄糖,证明了25nm的光谱转移,通过便携式光谱学实现了线性量化.

结论:

  • EtLFA平台成功地将标准传感集成到粗的膜基板上,将LFA转化为定量分析工具.
  • 这种方法克服了标准传感器的基板限制,并增强了LFA的分析能力.
  • 开发的平台为敏感的现场定量检测提供了新的可能性,扩大了横向流量分析的应用.