实时阻 impedance 激活的电阻驱动的启动,用于重新配置单个流动粒子的操纵
Alexis Lefevre1, Cristian Brandi2, Adele De Ninno3
1Université de Franche-Comté, CNRS, SUPMICROTECH-ENSMM, Institute FEMTO-ST, F-25000 Besançon, France.
Lab on a chip
|October 23, 2024
概括
这项研究介绍了一种全电微流体平台,用于精确的单粒子操纵. 它使用阻抗细胞计和介电泳来进行无标签的粒子分类和分离.
科学领域:
- 微流体学 微流体学
- 生物技术是生物技术.
- 电气工程 电气工程
背景情况:
- 对单个颗粒的精确操纵对于各种应用至关重要.
- 现有的方法通常需要预先聚焦或标记,从而限制了它们的效率.
- 无接触式操纵在维护粒子完整性方面具有优势.
研究的目的:
- 开发一个创新的全电平台,用于选择性单粒子操纵.
- 为了将无标签的颗粒特征与非接触式颗粒分离相结合.
- 通过实时控制来展示多功能粒子操纵能力.
主要方法:
- 利用微流体阻抗细胞测量用于无标签的颗粒特征.
- 采用介电泳来进行无接触的多向粒子分离.
- 开发了一种原创的在线算法,用于基于阻抗信号的介电电压的实时调节.
主要成果:
- 在8,10和12微米珠的混合物上演示了三种不同的操作模式.
- 实现了不论大小的粒子位置交换.
- 成功执行了基于大小的粒子分离和选择性序列分类.
结论:
- 开发的平台为单粒子操纵提供了多功能和高效的解决方案.
- 阻抗细胞计和介电泳的结合使得无标签的实时控制成为可能.
- 未来的应用包括先进的粒子和细胞操纵与可配置的控制逻辑.
相关概念视频
RLC Series Circuits: Impedance
When current flow is opposed in a DC or AC circuit, it is referred to as resistance or impedance, respectively. Impedance plays a key role in determining the performance of AC circuits. It is represented by Z, which is a combination of resistance and reactance, and depends upon the angular frequency, measured in ohms.
Thus, the magnitude of the impedance is given by the following equation,
Thus, the magnitude of the impedance is given by the following equation,
Impedances and Admittance
In the realm of AC circuits, passive circuit elements like resistors, inductors, and capacitors take on a different character when characterized by phasor voltage and current. Their behavior is expressed through impedance, a vital concept in AC circuit analysis.
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Impedance is a measure of resistance to sinusoidal current flow in an AC circuit. Unlike their behavior in DC circuits, where inductors appear as short circuits and capacitors as open circuits, the behavior of these components in AC...
Mesh Analysis for AC Circuits
In the domain of radio communication, the significance of impedance matching must be considered. It is crucial to ensure the efficient transmission of signals between radio transmitters and receivers. Achieving this balance involves using impedance-matching circuits, with one fundamental configuration comprising a resistor, capacitor, and inductor.
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
Impedance Combination
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Series R—L Circuit Transients
In a series resistor-inductor (R-L) circuit, closing the switch at the start of the time period simulates a three-phase short circuit, a fault condition where all three phases of an unloaded synchronous machine are short-circuited. When there is no fault impedance and no initial current, the initial voltage is determined by the phase angle of the source voltage.
Using Kirchhoff's Voltage Law (KVL) to analyze this circuit helps determine the total asymmetrical fault current, which consists of...
Using Kirchhoff's Voltage Law (KVL) to analyze this circuit helps determine the total asymmetrical fault current, which consists of...
Line Protection with Impedance Relays
Coordinating time-delay overcurrent relays in complex radial systems and directional overcurrent relays in multi-source transmission loops can be challenging. Impedance relays address these issues by responding to the voltage-to-current ratio, specifically measuring the apparent impedance of a line. These relays become more sensitive during faults as current increases and voltage decreases, thereby reducing the apparent impedance.
Under normal conditions, low load currents keep the measured...
Under normal conditions, low load currents keep the measured...


