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Related Concept Videos

Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
Rise of Liquid in a Capillary Tube01:18

Rise of Liquid in a Capillary Tube

When very thin cylindrical tubes, called capillaries, are dipped in a liquid, the liquid rises or falls in the tube compared to the surrounding liquid. This phenomenon is called capillary action. Capillary action occurs due to the combination of two opposing forces: the cohesive forces of the liquid, which cause it to stick to itself and form a rounded shape, and the adhesive forces between the liquid and the walls of the container, which cause the liquid to be attracted to the container walls.
Free Jet01:14

Free Jet

Free jets describe the flow of liquid exiting a reservoir through an opening into the atmosphere without resistance. The velocity (v) of the liquid jet is derived using Bernoulli's principle and expressed as:
Imaging Studies for Cardiovascular System II:Types of Echocardiography01:20

Imaging Studies for Cardiovascular System II:Types of Echocardiography

Echocardiography plays a role in assessing cardiac health and detecting heart conditions, with various types providing critical insights for diagnosis and treatment.
Types of Echocardiography
Transthoracic Echocardiography (TTE)
TTE is the most common type of echocardiogram which involves placing a transducer on the patient's chest, emitting sound waves to create heart images. TTE is invaluable for evaluating the heart's size, structure, and motion, making it particularly useful for diagnosing...
Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...

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Related Experiment Video

Updated: Jun 25, 2026

Visualization of High Speed Liquid Jet Impaction on a Moving Surface
08:34

Visualization of High Speed Liquid Jet Impaction on a Moving Surface

Published on: April 17, 2015

SEM imaging of liquid jets.

Daniel P DePonte1, R B Doak, Mark Hunter

  • 1Department of Physics, Arizona State University, Tempe, AZ 85287, United States. dandeponte@gmail.com

Micron (Oxford, England : 1993)
|February 28, 2009
PubMed
Summary

This study introduces a novel environmental scanning electron microscope (ESEM) technique for analyzing liquid jets. This method allows for high-resolution imaging of micro- and nanojet systems, crucial for aerosol and combustion research.

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Last Updated: Jun 25, 2026

Visualization of High Speed Liquid Jet Impaction on a Moving Surface
08:34

Visualization of High Speed Liquid Jet Impaction on a Moving Surface

Published on: April 17, 2015

Cryogenic Liquid Jets for High Repetition Rate Discovery Science
08:34

Cryogenic Liquid Jets for High Repetition Rate Discovery Science

Published on: May 9, 2020

Determining 3D Flow Fields via Multi-camera Light Field Imaging
14:25

Determining 3D Flow Fields via Multi-camera Light Field Imaging

Published on: March 6, 2013

Area of Science:

  • Materials Science
  • Fluid Dynamics
  • Microscopy

Background:

  • Studying liquid jets at the micro- and nanoscale is challenging due to vacuum limitations in traditional electron microscopy.
  • Optical microscopy offers limited resolution for detailed jet structure analysis.

Purpose of the Study:

  • To develop and present a new technique for observing liquid jets using environmental scanning electron microscopy (ESEM).
  • To enable high-accuracy measurements of liquid jet characteristics previously unattainable.
  • To demonstrate the utility of ESEM for micro- and nanojet system research.

Main Methods:

  • A two-fluid stream system was employed, featuring a water inner core and a co-flowing gas sheath.
  • This configuration reduced the liquid flow rate to meet ESEM vacuum compatibility.
  • Environmental scanning electron microscopy was utilized to image the liquid jets.

Main Results:

  • Successfully produced and imaged water jets with diameters as small as 700 nm.
  • ESEM imaging provided unprecedented detail on jet breakup points and cone geometry.
  • Achieved significantly higher measurement accuracy compared to optical microscopy.

Conclusions:

  • The developed ESEM technique is effective for studying liquid jets at the micro- and nanoscale.
  • This method offers superior resolution and accuracy for analyzing jet structures.
  • ESEM imaging of liquid jets is a valuable tool for research in aerosol production, combustion, and inkjet technologies.