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Related Concept Videos

Laminar and Turbulent Flow01:07

Laminar and Turbulent Flow

Fluid dynamics is the study of fluids in motion. Velocity vectors are often used to illustrate fluid motion in applications like meteorology. For example, wind—the fluid motion of air in the atmosphere—can be represented by vectors indicating the speed and direction of the wind at any given point on a map. Another method for representing fluid motion is a streamline. A streamline represents the path of a small volume of fluid as it flows. When the flow pattern changes with time, the streamlines...
Types of Fluids01:27

Types of Fluids

Fluids can be classified into Newtonian and non-Newtonian fluids based on their response to shear stress. Newtonian fluids have a linear relationship between shear stress and the shear strain rate, following Newton's law of viscosity. Their viscosity remains constant regardless of the shear rate, making their behavior predictable and easier to analyze. Common examples include water, air, oil, and gasoline.
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Capillarity in Fluid

Capillarity describes the movement of liquid in small spaces without external forces acting on it. The capillarity is driven by surface tension and adhesive interactions between the liquid and surrounding solid surfaces. This effect is often seen in narrow tubes, porous materials, and fine particles.
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Characteristics of Fluids01:20

Characteristics of Fluids

When a force is applied parallel to the top surface of a solid, it resists the applied force due to the internal frictional forces between the layers of the solid known as shearing resistance. However, when the force is removed, the shearing forces restore the original shape of the solid. Other deformation forces also cause temporary changes in shape if the forces are not beyond a threshold magnitude. Solids tend to retain their shape, making the study of their rest and motion easier. Beyond...
Characteristics of Fluids01:31

Characteristics of Fluids

Fluids differ from solids primarily in their molecular structure and stress response. Solids have tightly packed molecules with strong intermolecular forces, maintaining their shape and resisting deformation. In contrast, fluids have molecules spaced farther apart with weaker forces, allowing them to flow and deform easily.
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Updated: Jul 2, 2026

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices
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High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices

Published on: September 2, 2009

Fluidics.

R Stovel1

  • 1Stanford University, Stanford, California, USA.

Current Protocols in Cytometry
|September 5, 2008
PubMed
Summary

Flow cytometer fluidics deliver single cells for analysis and enable cell sorting. Proper fluidic function is crucial for accurate cell detection and isolation in flow cytometry instruments.

Area of Science:

  • Biomedical Engineering
  • Analytical Chemistry
  • Cell Biology

Background:

  • Flow cytometry relies on precise fluidics to guide cells to detectors.
  • Sorting instruments require additional fluidic capabilities for cell isolation.

Purpose of the Study:

  • To discuss the essential functions of flow cytometer fluidics.
  • To explain the mechanisms of cell analysis and sorting in flow cytometry.

Main Methods:

  • Review of primary and secondary fluidic functions.
  • Analysis of different sensing area types.
  • Examination of sample delivery methods.

Main Results:

  • Fluidics ensure single-file cell delivery for accurate detection.

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Last Updated: Jul 2, 2026

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices
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Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels
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Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels

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  • Fluidic systems enable physical isolation of selected cells for sorting.
  • Identified potential issues impacting sample flow and sorting accuracy.
  • Conclusions:

    • Understanding fluidics is key to optimizing flow cytometer performance.
    • Effective fluidic design is critical for both cell analysis and high-throughput cell sorting.