Articles tagged with Metamaterials
Researchers at Boston College have developed a designer metamaterial that can engineer emitted 'blackbody' radiation with an efficiency beyond natural limits, opening doors for innovative energy harvesting applications. The material's ability to control emissivity could further enhance energy conversion efficiency.
Researchers at Penn propose two-dimensional graphene metamaterials that can manipulate electromagnetic waves in the infrared spectrum. The metamaterials' conductivity can be altered using voltage, enabling transformation optics and applications in telecommunications, imaging, and signal processing.
Electrical engineers at Duke University have created a unique metamaterial that theoretically enables efficient wireless power transmission to small and large devices. The material refocuses energy transmitted between devices, reducing power loss and enabling longer-distance energy transfer.
Researchers developed a 3D invisibility cloak that guides light waves around an object, making it invisible to the human eye. The cloaking material is structured in the nanometer range and has precisely defined thicknesses, enabling it to manipulate light waves with unprecedented precision.
The Center for Metamaterials, led by Dr. David Crouse, aims to improve metamaterials research and application in renewable energy and sensors. The center will conduct fundamental research on materials and devices with high commercialization potential.
Researchers have created a simple bench-top technique to harness the force of acoustical waves, enabling the creation of various 3D structures. This technology has the potential to become a platform technology for the creation of new materials with extensive flexibility in terms of periodicity and material variety.
Researchers at Berkeley Lab have fabricated a perovskite-based superlens that captures evanescent light waves in the mid-infrared range, enabling highly sensitive biomedical detection and imaging. The superlens achieves an imaging resolution of one micrometer, surpassing the diffraction limit of conventional lenses.
Scientists have successfully designed a new type of antenna liner using metamaterials, which can enhance performance and reduce mass, leading to lower costs and increased efficiency in communications satellites. The design has overcome previous limitations of narrow bandwidth and high loss, making it suitable for real-world applications.
New materials could enable ultrapowerful microscopes, improved solar cells, and a possible cloak of invisibility. The breakthrough is made possible by overcoming two major limitations in metamaterials development: light absorption and precision tuning.
Researchers have discovered Möbius symmetry in metamaterials, which are engineered materials with electromagnetic properties. This discovery opens the door to finding and exploiting novel phenomena in metamaterials, as the coupling constants between meta-atoms can be arbitrarily varied without constraints.
Artificial black holes made with metamaterials can trap EM waves, preventing them from escaping like a black hole traps light. This technology could be used to measure how light is absorbed when passing through the material and enable the harvesting of light for solar cells.
Researchers have developed a three-dimensional metamaterial that captures evanescent sound waves, allowing for super-resolution acoustic imaging. The device, mounted on an ultrasound probe, can resolve image features as small as one-fiftieth of the wavelength of the sound waves.
Researchers created the first large area metamaterial structures on implantable bio-compatible silk substrates, providing a promising path towards developing novel biomaterial-inspired biosensors and biodetectors. The silk metamaterials retained their resonance properties while implanted under muscle tissue, opening up possibilities fo...
Researchers at Harvard University have developed a new terahertz semiconductor laser that emits highly collimated beams, suitable for applications such as security screening and chemical sensing. The advance uses metamaterials to confine and collimate the THz light, opening up new possibilities for terahertz science and technology.
Researchers at Purdue University have developed a new approach to overcome the fundamental limitation of metamaterials, which could enable breakthroughs in transformation optics. By placing dye between two layers of silver, they were able to amplify light and reduce absorption, promising applications such as ultra-powerful microscopes,...
Researchers at Michigan Technological University have created a non-metallic glass cloak that uses magnetic resonance to bend light waves around objects, making them invisible. The technology has potential applications in military and law enforcement.
Researchers at Boston University develop a new metamaterial device that can detect and control terahertz radiation, paving the way for safer medical and security scanners. The device uses an array of split-ring-resonators to manipulate electromagnetic properties of THz energy.
A Caltech-led team has engineered a simple yet versatile material that bends light in the 'wrong' direction, making it ideal for efficient light collection in solar cells. The novel negative-index metamaterial can handle light with any polarization over a broad range of incident angles.
Researchers have designed and tested experimental antennas that are highly efficient and remarkably small, potentially useful for emergency communications devices, micro-sensors, and portable ground-penetrating radars. The novel antennas radiate up to 95% of an input radio signal while defying normal design parameters.
Duke University engineers have created a new generation of lens that surpasses traditional lenses in focusing electromagnetic rays, with a wide angle of view and flat focal point. The lens is made from exotic composite materials known as metamaterials and has the potential to replace traditional optical systems.
A new class of materials may allow nanoscale machines to overcome mechanical friction by harnessing a quantum phenomenon known as the Casimir effect. Chiral metamaterials have been found to exert a repulsive force when placed in close proximity, enabling potential applications in industry, energy, and medicine.
Researchers at Imperial College London will develop new applications for metamaterials, including optical invisibility cloaks that render objects invisible to the human eye. The technology also enables flat lenses for imaging tiny objects smaller than the wavelength of light.
A German research team has developed a visualization tool to render partially or completely cloaked objects, revealing the visual effects of such mechanisms and their imperfections. The tool, called the 'carpet cloak,' creates photorealistic images that demonstrate how optical devices work.
A team of physicists has directly observed a reverse shock wave of light in a specially tailored structure known as a left-handed metamaterial. This is the first unambiguous experimental demonstration of reversed Cerenkov radiation, a phenomenon predicted over forty years ago.
Dr. Dentcho Genov's research, published in Nature Physics, explores the link between metamaterials and celestial mechanics to investigate phenomena like black holes in a controlled laboratory environment.
Chinese researchers have created the first tunable electromagnetic gateway, using transformation optics and ferrite materials to block electromagnetic waves while allowing passage of other entities. The new configuration has optimum permittivity and permeability, making it tunable and remotely switchable.
Researchers have developed a novel metamaterial device that guides electromagnetic waves around objects, including the corner of a building or the eastern seaboard, without losing direction. The device uses a composite metamaterial to deliver precise instructions, allowing beams to continue traveling in a straight line.
Researchers, including Dr. Dentcho Genov, successfully mimicked celestial mechanics using artificial optic materials to study phenomena around black holes and other celestial objects. The team's work has implications for technology, such as the 'invisibility cloak,' and confirms Louisiana Tech's contribution to vital science discoveries.
Researchers from UAB design a device called a dc metamaterial, making objects invisible under certain light by creating a zero magnetic field inside while keeping the exterior field intact. This innovation brings humanity closer to achieving invisibility.
Researchers at Purdue University have created a new type of invisibility cloak that works for all colors of the visible spectrum. The device uses a tapered optical waveguide and has been shown to cloak an area 100 times larger than the wavelength of light, making it possible to cloak larger objects.
Researchers at Rice University have created a light-bending metamaterial using nanocups that can focus light from any direction. This material has potential applications in thermal solar power, superlenses, and invisibility cloaks.
Researchers develop a mathematical model for cloaking objects using metamaterials, which can bend light waves around regions to create an 'invisible' space. This technology has potential applications in secure communication, medical procedures, and even three-dimensional television screens.
A team of researchers has created a solid-state metamaterial device that can modulate tiny waves of radiation in the terahertz range, setting a standard for performance. The device, which is controlled electronically, can process terahertz frequencies 30 times faster and with greater precision than conventional optical devices.
A team of Duke University engineers has developed a new type of cloaking device using complex mathematical algorithms to guide the design and fabrication of exotic composite materials. The device successfully cloaks electromagnetic waves, bending them around an object to create an 'engineered mirage'.
The new field of transformation optics harnesses nanotechnology and metamaterials to manipulate and control light at all scales. Researchers envision applications such as electromagnetic cloaks, ultra-powerful microscopes, and faster computers that use light instead of electronic signals.
Researchers in Spain have successfully created an acoustic cloak using metamaterials, which can make objects completely impervious to sound waves. The technology could be used for various applications such as warships to avoid sonar detection or concert halls to direct noise away from problem spots.
Researchers at Boston College developed a 'perfect' metamaterial capable of absorbing all incident radiation, transforming it into heat. This breakthrough showcases the team's ability to design materials with tailored responses to radiation.
Researchers have engineered a frequency-agile metamaterial that can be tuned over a range of frequencies in the terahertz gap, opening it up to various applications. The team's innovative composite uses semiconducting materials to achieve 20% tuning of terahertz resonance across different frequencies.
Researchers at Imperial College London have developed a new type of sensor that uses T-rays to detect explosives and poisons. The technology guides the radiation along a specially designed surface, increasing detection sensitivity and potentially revolutionizing security screening.
Researchers have created a layered material that causes light to refract in the opposite direction, enabling flat lenses and potentially capturing images of DNA molecules. This technology, developed at NSF-funded research centers, holds promise for various applications such as chemical threat sensors and medical diagnostics.
The team created a three-dimensional metamaterial constructed entirely from semiconductors, enabling negative refraction of light. This property holds promise for the development of superior lenses and compact mid-infrared optics.
A team of mathematicians has discovered a way to generate an electromagnetic wormhole using invisibility cloaking technology, allowing for objects to be transported through a tunnel in space. The technology could have potential applications in fields such as endoscopic surgeries and 3D television displays.
Researchers at US DOE's Ames Laboratory have developed a material with a negative refractive index for visible light, marking a significant advance in the field of metamaterials. The silver-based mesh-like material has a refractive index of -0.6 at the red end of the visible spectrum.
The team created a cloak using metamaterials arranged in concentric circles, which confers specific electromagnetic properties. The cloak appears to have properties similar to free space when viewed externally, reducing reflection and shadow detection.
Researchers at Ames Laboratory have successfully created metamaterials that can refract light at negative angles, potentially enabling the development of superlenses for medical imaging. This achievement demonstrates a new way to manipulate light's path and speed, moving closer to Einstein's theory of relativity.
Researchers at Kent State University develop negative index materials, rewriting the laws of optics and enabling super-resolution lenses, non-destructive optical tweezers, and more. The five-year project aims to create NIMs for visible light spectrum.
Researchers at Duke University have reported a theoretical blueprint for an invisibility cloak made of metamaterials. The cloak can hide objects so well that observers are unaware of their presence, similar to how water flows around a smooth rock in a river. This technology has potential applications in wireless communications and acou...
Researchers at Public University of Navarre develop innovative left-handed metamaterials for miniaturized mobile devices, enabling reduced size and improved signal control. The breakthrough technology uses Split Ring Resonators to achieve extremely low losses and has potential applications in wireless communication systems.
A team of physicists and engineers created metamaterials that respond magnetically to terahertz radiation, extending their properties to the terahertz range. This discovery has the potential to enable new applications in areas like weather guidance, security, and biomedical imaging.
Scientists develop materials that respond magnetically to THz, infra-red, and visible radiation, enabling applications in biological and security imaging. The discovery marks a significant step towards creating perfect lenses that can focus features smaller than the wavelength of light.
Researchers at the University of Toronto have discovered a new physics phenomenon that uses metamaterials to create a focused beam of light. By amplifying evanescent waves and correcting their phase, these lenses could revolutionize the engineering of electronic devices at the nanometre scale.