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相关概念视频

High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.

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相关实验视频

Updated: May 17, 2026

Lensless On-chip Imaging of Cells Provides a New Tool for High-throughput Cell-Biology and Medical Diagnostics
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带有光线线性探测器的发光二极管阵列使得高通量差分单细胞介电泳分析成为可能.

Emerich Kovacs1, Behnam Arzang1, Elham Salimi1

  • 1Department of Electrical and Computer Engineering, University of Manitoba, Winnipeg, MB R3T 5V6, Canada.

Sensors (Basel, Switzerland)
|January 8, 2025
PubMed
概括

这项研究引入了一种无透镜成像系统,用于使用电离力测量粒子介电性质. 该方法可以通过分析速度变化来区分细胞活力和癌症类型,提供高通量解决方案.

关键词:
介电光谱的介电光谱.电极光电泳是一种电极光电泳.差异检测 差异检测 差异检测在流量分析分析.没有镜头的镜头.一个单细胞传感器的传感器.

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科学领域:

  • 生物物理学的生物物理.
  • 微流体学 微流体学
  • 介电光谱学 介电光谱学

背景情况:

  • 介电性质为细胞状态提供了洞察力.
  • 现有的介电性质测量方法往往具有低通量或复杂.
  • 同时测量多个粒子是具有挑战性的.

研究的目的:

  • 开发一种无透镜成像方法,用于对粒子的高通量介电性质测量.
  • 为了证明从介电电泳速变量推断粒子属性的能力.
  • 验证该方法在细胞活力和癌症亚型鉴定方面的潜力.

主要方法:

  • 使用无镜头成像系统,配备一系列光源和256元光学阵列探测器.
  • 采用共平面电极来诱导介电泳力和测量粒子速度变化.
  • 应用470nmLED用于照明,并分析差速变化以推断介电性质.

主要成果:

  • 通过使用10微米聚烯珠子成功解决了相当于0.18的克劳西乌斯-莫索蒂因子的变化.
  • 模拟预测该方法可以根据介电性质将可活细胞与不可活细胞区分开来,并根据介电性质将癌细胞与多药耐药癌细胞区分开来.
  • 在几分钟内对中国仓鼠卵巢 (CHO) 细胞进行了证明的介电响应光谱收集,区分了0.18.18的Clausius-Mossotti因子差异.

结论:

  • 开发的无透镜成像方法可以同时进行高通量粒子介电性质的测量.
  • 该技术显示了细胞状态的无标签分化,包括生存能力和癌症亚型的前景.
  • 它的简单装置和防堵设计表明它可以广泛应用于各种领域.