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

Stream Function01:20

Stream Function

2.1K
In two-dimensional incompressible fluid flow, the continuity equation is essential for ensuring mass conservation, meaning that any change in fluid entering or exiting a region is balanced by a corresponding change elsewhere. For incompressible flow, where density remains constant, this requirement simplifies to the condition that the divergence of the velocity field must be zero. Mathematically, this is expressed as,
2.1K
The Tumor Microenvironment02:17

The Tumor Microenvironment

7.8K
Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
7.8K
Steady Flow of a Fluid Stream01:27

Steady Flow of a Fluid Stream

760
Consider a control volume, such as a pipe with solid boundaries, through which fluid flows and changes direction due to the impulse exerted by the resulting force from the pipe walls. In steady flow, the mass of fluid entering the control volume at a given time, t, with velocity v1, is equal to the mass leaving after infinitesimal time dt, with velocity v2.
During this process, the momentum of the fluid within the control volume remains constant over the time interval dt. By applying the...
760
Tissues01:18

Tissues

85.3K
Cells with similar structure and function are grouped into tissues. A group of tissues with a specialized function is called an organ. There are four main types of tissue in vertebrates: epithelial, connective, muscle, and nervous.
85.3K
Tissues01:25

Tissues

67.6K
Tissues are a group of cells that share a common embryonic origin. Microscopic observation reveals that the cells in a tissue share morphological features and are arranged in an orderly pattern to perform specific functions. From an evolutionary perspective, tissues appear in more complex organisms. Although there are many types of cells in the human body, they are organized into four broad categories of tissues: epithelial, connective, muscle, and nervous. Each of these categories is...
67.6K
Plant Cells and Tissues02:01

Plant Cells and Tissues

65.7K
Plant tissues are collections of similar cells performing related functions. Different plant tissues will have their own specialized roles and can be combined with other tissues to form organs such as flowers, fruit, stem, and leaves. Two major types of plant tissue include meristematic and permanent tissue.
65.7K

You might also read

Related Articles

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

Sort by
Same author

Conflict wounds and antimicrobial resistance: a systematic review on local antimicrobials to prevent infection after extremity open fracture.

BMJ military health·2026
Same author

Comparative mechanical characterisation of 13-93 bioactive glass and hybrid scaffolds for bone regeneration.

Scientific reports·2026
Same author

Laser-Assisted Processing and Modification of Bioactive Glasses: A Review.

Advanced healthcare materials·2026
Same author

A review on the identification of the mechanical properties of soft tissues and tissue-mimicking phantoms.

Journal of the mechanical behavior of biomedical materials·2026
Same author

SiO<sub>2</sub>-CaO<sub>CME</sub>/Poly(Tetrahydrofuran)/Poly(Caprolactone) 3D-Printed Scaffolds Drive Human-Bone Marrow Stromal Cell Osteogenic Differentiation.

Advanced healthcare materials·2026
Same author

Nanocomposite hydrogels reinforced with vinyl functionalised silica nanoparticles.

Journal of sol-gel science and technology·2025

Related Experiment Video

Updated: Feb 3, 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

17.9K

Acoustic Streaming in a Soft Tissue Microenvironment.

Ahmed El Ghamrawy1, Florentina de Comtes1, Hasan Koruk2

  • 1Noninvasive Surgery and Biopsy Laboratory, Department of Bioengineering, Imperial College London, London, United Kingdom.

Ultrasound in Medicine & Biology
|October 20, 2018
PubMed
Summary

Sound waves can move fluid through tissue-like materials. This study directly observed acoustic streaming in a tissue phantom, paving the way for new ultrasound therapies and diagnostics.

Keywords:
Acoustic streamingDrug deliveryFocused ultrasoundPorous materials

More Related Videos

Isolating Stem Cells from Soft Musculoskeletal Tissues
07:49

Isolating Stem Cells from Soft Musculoskeletal Tissues

Published on: July 5, 2010

13.9K
Visualizing the Interrenal Steroidogenic Tissue and Its Vascular Microenvironment in Zebrafish
07:19

Visualizing the Interrenal Steroidogenic Tissue and Its Vascular Microenvironment in Zebrafish

Published on: December 21, 2016

7.4K

Related Experiment Videos

Last Updated: Feb 3, 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

17.9K
Isolating Stem Cells from Soft Musculoskeletal Tissues
07:49

Isolating Stem Cells from Soft Musculoskeletal Tissues

Published on: July 5, 2010

13.9K
Visualizing the Interrenal Steroidogenic Tissue and Its Vascular Microenvironment in Zebrafish
07:19

Visualizing the Interrenal Steroidogenic Tissue and Its Vascular Microenvironment in Zebrafish

Published on: December 21, 2016

7.4K

Area of Science:

  • Biomedical Engineering
  • Acoustics
  • Materials Science

Background:

  • Acoustic streaming, the fluid flow induced by sound waves, is a proposed mechanism for biomedical ultrasound applications.
  • Direct observation of acoustic streaming in biological tissues or tissue phantoms has been lacking.
  • Potential applications include neuromodulation and enhanced drug delivery.

Purpose of the Study:

  • To directly observe and characterize acoustic streaming in a tissue-mimicking material.
  • To investigate the relationship between ultrasound intensity and fluid movement.
  • To provide a mechanistic basis for ultrasound-mediated fluid transport.

Main Methods:

  • Development of a porous material that mimics tissue microstructure.
  • Utilized dye and video microscopy to visualize and track fluid displacement.
  • Applied focused ultrasound beams (238 W/cm², 5 MHz) and analyzed fluid movement.
  • Assessed microstructural integrity using scanning electron microscopy.

Main Results:

  • Demonstrated that focused ultrasound can induce fluid flow (acoustic streaming) in a tissue phantom.
  • Observed both axial and radial fluid movement, dependent on ultrasound intensity.
  • Fluid clearance correlated positively with increasing ultrasound intensity.
  • No observable microstructural damage to the material post-sonication.

Conclusions:

  • Acoustic streaming is achievable in soft, porous, tissue-mimicking materials.
  • The findings support the use of acoustic streaming for therapeutic and diagnostic ultrasound applications.
  • This study provides direct evidence and a model for ultrasound-induced fluid transport in biological contexts.