Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Fluid Pressure01:14

Fluid Pressure

In mechanical engineering, fluid pressure plays a critical role in designing systems that utilize liquid flow, such as hydraulic systems, pumps, and valves. When designing these systems, engineers must ensure they can withstand the forces created by fluid pressure to avoid damage or failure.
According to Pascal's law, a fluid at rest will generate equal pressure in all directions. This pressure is measured as a force per unit area, and its magnitude depends on the fluid's specific weight or...
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:
Fluid Movement Between Compartments01:18

Fluid Movement Between Compartments

The force applied by fluids against a surface, known as hydrostatic pressure, initiates the transfer of fluid among different compartments. Within our blood vessels, the blood's hydrostatic pressure is a result of the heart's pumping action. At the arteriolar end of capillaries, hydrostatic pressure (capillary blood pressure) exceeds the opposing colloid osmotic pressure created primarily by plasma proteins like albumin. This discrepancy in pressure propels plasma and nutrients from the...
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.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Integrative single-cell and bulk transcriptomic analyses identify DRAM1 as a candidate gene from fibroblast-associated transcriptional programs in colorectal cancer.

Frontiers in oncology·2026
Same author

Expanded Hepatic Progenitor Cells Featured with Aggregation of α-Synuclein Contribute to Pathologic Bile Duct Regeneration in Biliary Atresia.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Allergic Sensitization to Common Ragweed and Mugwort Pollen Allergens: A 6-Year Single-Center Retrospective Analysis.

Journal of immunology research·2026
Same author

Development and preliminary evaluation of multiplex PCR assays for the detection of bacterial respiratory pathogens in bovine and ovine.

Veterinary and animal science·2026
Same author

Sensitive and wafer-scale olfactory sensory neurons.

Microsystems & nanoengineering·2026
Same author

EdgeDenseCalib: Targetless Camera-LiDAR Calibration via Enhanced Edge Feature Densification.

Sensors (Basel, Switzerland)·2026
Same journal

Erratum for the Research Article "Assessing the health risks of rice cadmium content standards in China" by H. Chu <i>et al</i>.

Science advances·2026
Same journal

Erratum for the Research Article "Developmental regulation of Erk signaling by mitotic kinases" by F. Chen <i>et al</i>.

Science advances·2026
Same journal

Magnetically levitated metasurface enabling tangible and bidirectional human-machine interaction.

Science advances·2026
Same journal

A general photoinduced manganese-catalyzed platform for the sequential difunctionalization of [1.1.1]propellane.

Science advances·2026
Same journal

Turning sound and force into light with AlN:Mn<sup>2+</sup> mechanoluminescence.

Science advances·2026
Same journal

Extreme dominance of Earth-origin heavy ions in the intense ring current near the Earth during the May 2024 super geomagnetic storm.

Science advances·2026
See all related articles

Related Experiment Video

Updated: Jun 5, 2026

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
12:26

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Published on: August 27, 2013

17.0K

Sound-controlled fluidic processor.

Hengjia Zhu1, Qiyu Deng1, Junzhi Li2

  • 1Department of Mechanical Engineering, The University of Hong Kong, Hong Kong SAR 999077, P.R. China.

Science Advances
|May 7, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a sound-controlled fluidic processor for contactless liquid manipulation. It enables precise microfluidic functions without contamination, preserving sample integrity for biomedical and chemical applications.

More Related Videos

A Microfluidic Platform for Precision Small-volume Sample Processing and Its Use to Size Separate Biological Particles with an Acoustic Microdevice
11:32

A Microfluidic Platform for Precision Small-volume Sample Processing and Its Use to Size Separate Biological Particles with an Acoustic Microdevice

Published on: November 23, 2015

13.7K
Assembly and Operation of an Acoustofluidic Device for Enhanced Delivery of Molecular Compounds to Cells
07:16

Assembly and Operation of an Acoustofluidic Device for Enhanced Delivery of Molecular Compounds to Cells

Published on: January 21, 2021

3.0K

Related Experiment Videos

Last Updated: Jun 5, 2026

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
12:26

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Published on: August 27, 2013

17.0K
A Microfluidic Platform for Precision Small-volume Sample Processing and Its Use to Size Separate Biological Particles with an Acoustic Microdevice
11:32

A Microfluidic Platform for Precision Small-volume Sample Processing and Its Use to Size Separate Biological Particles with an Acoustic Microdevice

Published on: November 23, 2015

13.7K
Assembly and Operation of an Acoustofluidic Device for Enhanced Delivery of Molecular Compounds to Cells
07:16

Assembly and Operation of an Acoustofluidic Device for Enhanced Delivery of Molecular Compounds to Cells

Published on: January 21, 2021

3.0K

Area of Science:

  • Biotechnology
  • Chemical Engineering
  • Physics

Background:

  • Liquid handling often leads to residue formation, compromising precision and purity.
  • Contactless methods are essential for handling sensitive biological and chemical samples.
  • Existing techniques may not offer sufficient control or preservation of sample integrity.

Purpose of the Study:

  • To develop a sound-controlled fluidic processor for contactless liquid manipulation.
  • To enable precise control over microfluidic functions like moving, merging, mixing, and cleaving.
  • To provide a versatile platform for handling liquids with varying surface tensions and volumes.

Main Methods:

  • Generation of an acoustophoretic force field.
  • Utilizing sound waves to manipulate droplets in a contactless manner.
  • Demonstration of microfluidic functions with droplets ranging from nanoliters to milliliters.

Main Results:

  • Successful contactless manipulation of liquids with surface tension from 17.9 to 72 mN/m.
  • Precise control over droplet movement, merging, mixing, and cleaving achieved.
  • Demonstrated preservation of sample integrity during fluidic operations.

Conclusions:

  • The sound-controlled fluidic processor offers a novel, contactless approach to microfluidic manipulation.
  • This technology is suitable for a wide range of liquid volumes and surface tensions.
  • It holds significant potential for advancing biomedical and chemical practices requiring high precision and sample preservation.