微/纳米粒子分离将惯性和热泳效应结合在三维蛇形螺旋道中
Junho Kim1, Hwisu Jeon1, Kyunghun Lee1
1Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-Gil, Ulsan 44919, Republic of Korea. tskim@unist.ac.kr.
Lab on a chip
|June 30, 2025
概括
这项研究介绍了一种新的3D微流体装置,它结合了惯性和热泳效应,以实现高效的微/纳米粒子分离. 该SART设备实现了纳米分离,并利了粒子带,在细胞分离和生物处理中有应用.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 微流体学 微流体学
- 纳米技术纳米技术
背景情况:
- 传统的单场粒子分离方法在选择性和目标范围方面存在局限性.
- 结合互补的物理场可以通过利用协同效应来克服这些限制.
研究的目的:
- 开发一种基于多物理场 (MPF) 的方法,用于在芯片上连续进行微/纳米粒子分离.
- 创建一个 3D 蛇形螺旋和可调节的辐射温度 (SART) 装置,集成惯性和热泳效应.
- 为了证明增强的分离效率和纳米尺度的能力.
主要方法:
- 通过在加热棒周围滚动一个柔性芯片来制造3D蛇形螺旋微流体装置.
- 流量 (惯性) 和电力的独立控制 (热泳的朱尔加热).
- 数字模拟和实验性表征以优化分离参数.
主要成果:
- 该SART装置实现了微粒和纳米粒子在芯片上的连续分离,达到纳米级分辨率.
- 结合惯性和热泳效应,显著提高了不同颗粒大小的分离效率.
- 在将活细胞从纳米级碎片中分离的成功应用,包括在线热细胞溶解过程.
结论:
- 3D SART设备为微/纳米粒子分离提供了一个强大的平台,克服了传统方法的局限性.
- 惯性和热泳的协同组合使得在广泛的粒子大小中实现高效分离.
- 通过整合额外的物理领域和先进制造,开发成自动化芯片上生物处理系统的潜力.
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