Tuning Particle Velocity and Measurement Sensitivity by Changing Pore Sensor Dimensions
Tuning Particle Velocity and Measurement Sensitivity by Changing Pore Sensor Dimensions
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DOI：
10.1246/cl.2012.1134
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发表时间：
2012-10-05
影响因子：
1.6
通讯作者：
Trau, Matt
中科院分区：
文献类型：
--
作者：
Kozak, Darby;Anderson, Will;Trau, Matt
调整弹性孔隙传感器的尺寸可以控制测量灵敏度和通过孔隙的颗粒速度。通过拉伸孔膜来增加孔径，使 330 nm 聚苯乙烯颗粒产生的电阻脉冲信号的幅度降低了 24%，同时增加了它们通过孔的速度，如脉冲持续时间缩短了 68% 所示。这些效应分别是由于通过较大孔隙的排除颗粒体积减少和流体速度增加造成的。
Tuning the size of an elastic pore sensor enables the control of both the measurement sensitivity and particle velocity through the pore. Increasing the pore size by stretching the pore membrane reduced the magnitude of the resistive pulse signal generated by 330 nm polystyrene particles by 24% while simultaneously increasing their velocity through the pore, as shown by the 68% shorter pulse durations. These effects are due to the reduced excluded particle volume and increased fluid velocity through the larger pore, respectively.