Metamaterials are artificial materials composed of periodic or aperiodic structures to have extraordinary electromagnetic characterizations. By properly tailoring the feature size of metamaterial, it can be realized electro-optic devices spanning the wavelength range from microwave, infrared (IR), visible to ultraviolet…...
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Artificial Intelligence promises huge benefits to the world but lacks the proper infrastructure for implementation. AI infrastructure today is either too expensive, too slow, too hot or far too power hungry to be sustainable and commercially available to many potential…...
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Optronics, surveillance and sighting systems allow defence forces to effectively locate, track, observe and engage a range of targets in land, airborne and maritime warfare domains both during daylight and after dark. These military-grade systems play a vital role in border security, base protection, patrol and intelligence, surveillance and reconnaissance (ISR) missions. Unmanned…...
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Phones and other GPS-enabled devices pinpoint your location on Earth by contacting at least four satellites bearing atomic clocks. Each of these satellites provides a time stamp, and the system calculates your location based on the relative differences among those…...
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Synchronizing modern electronic systems such as the Internet and GPS navigation is currently done using microwave atomic clocks that measure time based on the frequency of natural vibrations of cesium atoms. Those vibrations occur at microwave frequencies that can easily…...
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Photodetectors, also called photosensors, are sensors of light or other electromagnetic radiation. There is a wide variety of photodetectors that may be classified by mechanism of detection, such as photoelectric or photochemical effects, or by various performance metrics, such as…...
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There has been an exponential growth of space objects, including orbital debris that has increased the in-orbit collision risk. NASA estimates there are 21,000 objects orbiting Earth that are larger than 10 cm, 500,000 between 1 and 10 cm, and…...
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Currently, old-style personal Medicare techniques rely mostly on traditional methods, such as cumbersome tools and complicated processes, which can be time-consuming and inconvenient in some circumstances. Furthermore, such old methods need the use of heavy equipment, blood draws, and traditional…...
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Optical networks are vulnerable to several types of security breaches or attacks, typically aimed at disrupting the service or gaining unauthorized access to carried data, i.e., eavesdropping. Depending on the aim of the attack, security breaches can induce financial losses to…...
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The electromagnetic spectrum is a series of frequencies ranging from radio waves to microwaves, visible light, X-rays, and gamma rays. As the wavelength of the electromagnetic radiation shortens, the waves have a higher frequency—how quickly electromagnetic waves follow each other—and…...
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