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通过对共价表面进行修改,以实现精确的流量控制和传感,广泛调整纸张的微流体特性
Canan Aksoy1,2, Ischa van Kesteren1, Han Zuilhof1,3
1Laboratory of Organic Chemistry, Wageningen University, Helix Building 124, Stippeneng 4, Wageningen 6708 WE, the Netherlands.
ACS applied bio materials
|April 17, 2025
概括
研究人员开发了微流体纸张设备 (μPAD) 的修改纸张,以精确控制液体流量. 这项创新增强了各种分析应用的现场传感和执行能力.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
- 微流体学 微流体学
背景情况:
- 微流体纸质设备 (μPAD) 通过毛细管驱动的流量提供便携式,实验室到样本的分析.
- 纸张微流体的精确流量控制仍然是一个重大挑战,限制了先进的功能.
- 现有的纸张流量控制方法往往难以整合和精确管理.
研究的目的:
- 开发一种简单的对纤维素纸的共价修饰方法,以调整表面特性.
- 为纸张微流体应用引入先进的功能和精确的流量控制.
- 为了证明改性纸在现场传感和执行设备中的潜力.
主要方法:
- 使用不同链长的脂肪乙化物对纤维素纸进行共价改性.
- 使用FTIR-ATR,静态水接触角度和毛细血管流量测量 (透性,流程距离,流速) 进行改性纸张的表征.
- 开发用于测量表面张力,多步,确定乙醇度和液液提取的概念验证设备.
主要成果:
- 通过共价修饰成功调整纸张表面特性和毛细血管流动特性.
- 根据表面张力和接能力,对液体流量进行了精确的控制.
- 概念验证设备在表面张力测量,多步,乙醇传感和液体-液体提取方面显示出有效的应用.
结论:
- 纤维素纸的简单共价修饰提供了一种多功能方法来增强μPAD的功能.
- 精确控制的毛细血管流可以实现先进的现场分析应用.
- 这种方法为开发更复杂,更可靠的基于纸张的传感平台提供了途径.
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