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Related Concept Videos

Dynamics of Circular Motion01:30

Dynamics of Circular Motion

An object undergoing circular motion, like a race car, is accelerating because it is changing the direction of its velocity. This centrally directed acceleration is called centripetal acceleration. This acceleration acts along the radius of the curved path (thus is also referred to as radial acceleration).
Any acceleration must be produced by some force. Therefore, any force or combination of forces can cause centripetal acceleration. A few examples include the tension in the rope on a...
Accelerating Fluids01:17

Accelerating Fluids

When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.

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Related Experiment Video

Updated: Jun 6, 2026

Micro-particle Image Velocimetry for Velocity Profile Measurements of Micro Blood Flows
07:53

Micro-particle Image Velocimetry for Velocity Profile Measurements of Micro Blood Flows

Published on: April 25, 2013

Microfluidic systems: high radial acceleration in microvortices.

J Patrick Shelby1, David S W Lim, Jason S Kuo

  • 1Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, USA.

Nature
|September 5, 2003
PubMed
Summary
This summary is machine-generated.

Researchers developed a microfluidic microvortex capable of high rotational speeds and radial acceleration. This technology enables the study of biological and chemical processes under extreme centrifugal forces in microdevices.

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Last Updated: Jun 6, 2026

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Capillary-based Centrifugal Microfluidic Device for Size-controllable Formation of Monodisperse Microdroplets
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A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level
11:14

A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level

Published on: January 10, 2017

Area of Science:

  • Biotechnology
  • Fluid Dynamics
  • Microfluidics

Background:

  • Microfluidic systems offer rapid analysis of biological samples.
  • Controlling fluid dynamics at the microscale is crucial for advanced applications.

Purpose of the Study:

  • To describe a novel microfluidic microvortex.
  • To demonstrate its capability for generating high rotational velocities and radial acceleration.

Main Methods:

  • Generation of a single re-circulating flow (microvortex) within a microfluidic system.
  • Measurement of fluid rotational velocity and radial acceleration.

Main Results:

  • Achieved maximum fluid rotational velocity of up to 12 m s(-1).
  • Generated radial acceleration exceeding 10(6)g.
  • Demonstrated the potential for microvortices in centrifugal microdevices.

Conclusions:

  • Microvortices represent a powerful tool for microfluidic applications.
  • The generated high radial acceleration can be utilized to study biological and chemical processes under extreme conditions.