在波动力下,同聚合物和异聚合物通过有图案的孔隙转移
Gokul Upadhyay1, Rajeev Kapri1, Abhishek Chaudhuri2
1Department of Physical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli, 140306, India.
The European physical journal. E, Soft matter
|April 4, 2024
概括
与恒定力相比,振荡力通过有模式的毛孔加速了聚合物转移. 聚合物刚性和孔隙相互作用显著影响这种增强的转位,使序列预测.
科学领域:
- 聚合物物理 聚合物物理
- 软物质物理学 软物质物理学
- 计算生物物理学的计算生物物理.
背景情况:
- 了解通过纳米孔的聚合物转移对于DNA测序和药物输送至关重要.
- 半柔性聚合物表现出复杂的行为,受到链条刚性和外部力量的影响.
- 有图案的毛孔提供可调节的环境来控制转移动态.
研究的目的:
- 研究半柔性聚合物在依赖时间的驱动力下通过有图案的毛孔的转位动态.
- 确定聚合物刚度,孔状性质和力特征对转位效率的影响.
- 根据转位行为开发异聚合物的测序方法.
主要方法:
- 兰格温动力学模拟被用于模拟聚合物转位.
- 应用了时间依赖的 (振荡和恒定的) 驱动力.
- 系统参数包括聚合物刚度,孔隙几何学和孔隙-聚合物相互作用.
- 分析了转移时间和分布.
主要成果:
- 振荡力显著提高转移速度,相比于相当于平均大小的恒定力.
- 增强的转位与聚合物刚性和孔隙粘性相关.
- 孔隙排列极大地影响了转位动态,由聚合物刚性和孔隙-聚合物相互作用调节.
- 不同质的聚合物根据在振荡力下的细分属性表现出不同的转位时间.
结论:
- 时间依赖的力量,特别是振荡的力量,提供了一种机制,可以通过图案纳米孔加速聚合物转移.
- 聚合物刚性和孔隙特性是优化转位的关键因素.
- 这项研究提出了一种新的异聚合物测序方法,利用受孔性质影响的差异转位行为.
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