Articles tagged with Metasurfaces
Researchers at Purdue University have developed a method to produce multiple colors simultaneously on an electronic chip, enabling broader bandwidth for sensing and processing information. This breakthrough could lead to advancements in nanophotonics, bio-sensing, and imaging applications.
Researchers have developed miniaturized infrared filters using phase change materials and metasurfaces, enabling precise measurement of mid-infrared frequencies. These tiny filters can be integrated into smartphones, allowing for real-time monitoring of air quality, food freshness, and health conditions.
Researchers developed a nonlinear elastic metasurface that can convert a soundwave's fundamental frequency to its second harmonic, advancing noise control technologies. This concept could isolate low frequencies, making it easier to absorb them, and potentially lead to new acoustic devices like diodes and transistors.
Researchers at Harvard SEAS developed a flat metalens that can resolve details smaller than a wavelength of light, generate optical vortices and holograms, and exhibit achromatic behavior in multiple colors.
Researchers created a hyperbolic metasurface using boron nitride that produces concave wavefronts with infrared light, revolutionizing the miniaturization of sensing and signal processing devices. The team overcame fabrication challenges to achieve precision structuring on the nanometer scale.
Researchers developed a device that combines metasurface lenses with MEMS technology, enabling fast scanning and beam steering. The integrated device can control the angular rotation of a flat lens and scan the focal spot by several degrees.
Researchers at Penn State have developed a new theory that uses gradient index materials and metasurface layers to improve optical lens performance. The new design reduces the need for multiple lenses, resulting in lighter and thinner optical systems.
A new metasurface-based technology has been tested on humans, providing higher signals from local brain regions and potentially reducing image acquisition time or acquiring higher resolution images. The use of metasurfaces could improve MRI comfort for patients and disease diagnosis.
A team of researchers from Harvard SEAS encoded multiple holographic images in a metasurface that can be unlocked separately with differently polarized light. This advancement offers more control over polarization manipulation and measurement, enabling applications such as anti-fraud protection and entertainment.
Researchers at UC San Diego have fabricated a semiconductor-free microelectronic device using metamaterials, showing a 1,000% increase in conductivity. The discovery paves the way for faster and more powerful devices, as well as more efficient solar panels.
Researchers at the University of Bristol have developed a new generation of high-efficiency solar thermal absorbers using a tri-layer metasurface absorber. The system uses amorphous carbon as an interlayer between thin gold films, strongly absorbing light across the solar spectrum while minimizing emission of thermal radiation.
Researchers at CNRS and University of Lorraine develop a coiled-up acoustic metasurface that achieves total acoustic absorption in very low-frequency ranges. The absorber's deep-subwavelength thickness enables it to handle large wavelengths with reduced size structure, making it physically practical for most applications.
French researchers have developed metamaterial resonators that allow emission in the infrared to be tuned through geometry, enabling the encoding of images. This technology has potential breakthrough applications in infrared televisions, biochemical sensing, and anti-counterfeit devices.
Scientists have developed a new ultra-thin invisibility cloak that can render small objects undetectable by rerouting incoming light waves. The cloak is designed with a reflective metasurface and light-scattering antennae, allowing it to conceal objects with sharp edges and peaks.
Researchers at Penn State have developed a metamaterial coating that allows coated objects to function normally while appearing as something other than what they really are. The 'illusion coatings' work by using copper patterns designed to create the desired result, enabling practical applications for cloaking metal antennas and sensors.
The project aims to create rapidly configurable metasurfaces that can be tuned in real-time, enabling the development of advanced optical technologies and quantum information devices. The research team will combine nanophotonics with quantum photonics to achieve unprecedented control over photon emission.
Researchers at UT Austin propose a battery-powered active cloak that draws energy from a battery, allowing objects to become undetectable to radio sensors over a greater range of frequencies. This technology has applications in improving cellular and radio communications, biomedical sensing, and near-field imaging.
Researchers at Purdue University have developed a new hologram technology using tiny nanoantennas that can control light with unprecedented efficiency. The metasurface, thousands of V-shaped nanoantennas, enables the creation of ultra-efficient devices for sensing, displays and information processing.
Researchers have developed metasurfaces that can manipulate and control light, enabling new optical technologies with applications in solar cells, computers, and telecommunications. The technology uses metamaterials to harness surface plasmons and reduce the size of photons, promising breakthroughs in nanophotonic devices.
Researchers at NIST have demonstrated a unique fluid-tuned 'metasurface,' which can concentrate energy in a material and change its properties. The metasurface's resonant frequency can be tuned by adding purified water, allowing it to reflect, store, or transmit energy.