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Related Concept Videos

Ultrasonography01:17

Ultrasonography

Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called a...
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...
X-ray Imaging01:24

X-ray Imaging

German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with X-rays, and by 1900, X-ray was widely...

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Imaging skins: an imaging modality with ultra-thin form factor.

Jordan Burch1, Ying Wan, Junying Zhang

  • 1Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA. burc0062@umn.edu

Optics Letters
|July 25, 2012
PubMed
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Researchers developed a novel surface-based imaging system using waveguide coupling. This compact imaging skin achieves high resolution comparable to traditional lenses but with a significantly reduced footprint.

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Area of Science:

  • Optics and Photonics
  • Materials Science
  • Nanotechnology

Background:

  • Conventional imaging systems face limitations in size and mass, restricting their application scope.
  • Far-field resolution in imaging is typically constrained by the aperture size of optical components.

Purpose of the Study:

  • To introduce a new imaging modality that overcomes the size and mass limitations of traditional systems.
  • To demonstrate a surface-confined imaging approach with high resolution.

Main Methods:

  • Development of a novel imaging modality based on waveguide coupling.
  • Fabrication of a two-dimensional imaging skin.
  • Characterization of the resolution and physical dimensions of the imaging skin.

Main Results:

  • The proposed imaging modality is entirely confined to a two-dimensional surface.
  • The imaging skin achieved resolution comparable to a 0.5 cm diameter lens.
  • The imaging system exhibited an ultra-low depth of only a few micrometers.

Conclusions:

  • Waveguide-coupled imaging offers a pathway to miniaturized imaging systems.
  • This technology enables high-resolution imaging in a flexible, thin-film format.
  • Potential applications include wearable devices, flexible electronics, and minimally invasive medical imaging.