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RF imaging, architectures, and applications: introduction to the feature issue
Keith A Krapels1, Neil A Salmon, David A Wikner
1U.S. Army Night Vision and Electronic Sensors Directorate, Fort Belvoir, Virginia 22060, USA.
Applied Optics
|July 22, 2010
Summary
This feature issue covers advancements in millimeter, submillimeter, and terahertz imaging. These emerging technologies offer new possibilities for scientific and industrial applications.
Area of Science:
- Optics and Photonics
- Electromagnetic Wave Applications
Background:
- Focuses on the emerging fields of millimeter, submillimeter, and terahertz (THz) imaging.
- Highlights recent technological progress and applications in these spectral ranges.
Discussion:
- Explores the unique capabilities of millimeter, submillimeter, and THz waves for imaging.
- Discusses challenges and opportunities in developing advanced imaging systems.
Key Insights:
- Showcases cutting-edge research in millimeter, submillimeter, and THz imaging technologies.
- Demonstrates the growing importance of these spectral bands across various scientific disciplines.
Outlook:
- Predicts future trends and potential breakthroughs in terahertz imaging.
- Suggests the expanding role of these imaging techniques in scientific discovery and technological innovation.
Related Concept Videos
01:03IR Frequency Region: Fingerprint Region
IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the C=O, C=N, and C=C occur between 1600–1850 cm−1.
The...
The...
01:24X-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...
01:24Magnetic Resonance Imaging
Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...