Articles tagged with Metamaterials
Researchers have developed a new hybrid structure that interacts strongly with electromagnetic radiation, enabling control over optical switches. The graphene-based material has the effect of focusing radiation into a smaller area than its wavelength.
Researchers at Harvard have created the first on-chip metamaterial with a refractive index of zero, allowing for infinitely fast light manipulation. This discovery has exciting applications in quantum computing and integrated optics.
A new thermal cloak developed by researchers in Singapore can render objects thermally invisible by redirecting incident heat. The active thermal cloaking system has the potential to fine-tune temperature distribution and heat flow in electronic and semiconductor systems.
A new sensor developed at Duke University uses metamaterials and compressive sensing to separate overlapping sounds in loud environments. The device achieved a 96.7% accuracy rate in distinguishing between three identical sounds sent from different directions.
Scientists have made significant progress in overcoming the challenges of creating a perfect lens using metamaterials. The team proposes a novel approach that utilizes negative index materials and plasmon-injection schemes to shield desired light waves, allowing them to pass through unscathed. This breakthrough has the potential to rev...
Chinese scientists created a tunable membrane material that effectively recreates the quantum tunneling effect for sound waves. The material has an effective density near zero and enables high transmission around sharp corners and efficient wave splitting.
Researchers have successfully controlled the length and strength of waves of atomic motion, promising applications in fine-scale imaging and information transmission. Hybrid polaritons propagate throughout many layers of a crystalline material and can be tuned with an electronic gate.
Researchers developed a metamaterial hyperlens that can improve early cancer detection, nanoelectronic manufacturing, and single-molecule observation. The design overcomes diffraction limitations in the visible frequency range, enabling higher resolution imaging and potentially leading to breakthroughs in various fields.
Researchers at ITMO University and Australian National University created an invisible cylindrical object in the microwave range without metamaterial coatings. The method is based on Fano resonances, where waves scattered via resonant and non-resonant mechanisms have opposite phases and are mutually destroyed.
Researchers at University of Malta develop a mathematical model to explain the unusual behavior of auxetic materials, which grow wider when stretched. The model has potential applications in biomedicine, catalysis, and smart materials for healthcare and beyond.
Scientists at Berkeley Lab have developed a new design tool to predict the nonlinear optical properties of metamaterials. This breakthrough enables efficient design and creation of high-performance materials for applications such as coherent Raman sensing, entangled photon generation, and frequency conversion.
A City College of New York led-team successfully demonstrated enhancing light emission and capturing light from metamaterials with light emitting nanocrystals. The breakthrough could lead to practical applications in ultrafast LEDs, nanoscale lasers, and efficient single photon sources.
The study establishes form-invariance of electromagnetic, sound, and elastic wave equations without assuming relations between field variables. New locally accurate elastodynamic equations for inhomogeneous media are derived, leading to the design of perfect elastic wave rotators and cloaks.
A team of researchers has developed a new method, laser shock imprinting, to create large-area patterns of three-dimensional nanoshapes from metal sheets. This technique enables the mass production of innovative materials with engineered surfaces that control light, potentially revolutionizing high-speed electronics, advanced sensors, ...
The NUP/UPNA researchers developed a smart structure based on metamaterials to improve the performance of radar antennae, addressing blind spot mitigation. Their metaradome improves beam direction without modifying the prototype antenna.
The team designs 'digital' metamaterials composed of two materials with positive and negative permittivity values, enabling the creation of flat lenses, hyperlenses, and waveguides. By carefully arranging these materials, they can produce bulk metamaterials with nearly any desired permittivity value.
A new technique allows ultrasound to penetrate bone and metal, enabling medical professionals to monitor blood flow in the brain or treat brain tumors more effectively. The metamaterial structure offsets distortion caused by these 'aberrating layers,' increasing wave energy transmission by up to 88%.
Researchers at RIKEN have developed a method to manufacture highly symmetric, three-dimensional metamaterials with isotropic optical responses. The team created a large metamaterial, up to 4 mm x 4 mm2 in size, using a combination of top-down electron lithography and bottom-up self-folding mechanism.
The researcher designed and manufactured new devices based on epsilon-near-zero (ENZ) metamaterials, achieving high speed transmission and radiation focusing properties. The devices have potential applications in nanocircuits, electrical levitation, invisibility, and multiple-frequency spectroscopy experiments.
The study proposes various compact devices capable of redirecting electromagnetic waves with high efficiency, opening up new ways of miniaturizing components and controlling light. The work utilizes ENZ metamaterials to achieve super coupling, tunnel effect, and confining energy in tiny spaces.
Researchers at Cornell University discovered a way to control the stiffness of a sheet material using an origami folding pattern called Miura-ori. By introducing pop-through defects, they can program the material's properties, creating a programmable matter that can snap into place and perform mechanical functions.
Physicists and materials scientists are using origami-based folding methods to create controllable new materials that exhibit desired physical properties. The technique, known as Miura-ori, allows for the creation of programmable metamaterials with tunable stiffness and stability.
Researchers have developed a new breed of metamaterials that can twist light's polarization, orders of magnitude stronger than natural materials. The breakthrough could lead to the creation of compact opto-electronic devices, such as light-based computer chips.
Researchers at NIST have created a silver-glass metamaterial that enables one-way transmission of visible light, with around 30 times more light passing through in the forward direction than in reverse. The device has potential applications in optical information processing and biosensing devices.
A novel metamaterial enables fast, efficient and high-fidelity terahertz radiation imaging system capable of manipulating electromagnetic waves. The device uses a series of filter-like masks to retrieve multiple samples of a terahertz scene, which are reassembled by a single-pixel detector.
KIT scientists create a volume in which an object can be hidden from touching, similar to a pea under the mattress of a princess. The mechanical invisibility cloak is based on a metamaterial structure that directs forces away from the object, making it invisible to touch.
Researchers at Penn State will focus on developing plasma photonic crystals and plasma-embedded metamaterials that operate in the terahertz range, enabling applications such as antennas with beam steering and filter devices. The project aims to replace traditional metallic split-ring resonators with low-loss dielectric resonators.
Researchers at Penn State have developed a new metamaterial with high absorption over broad bandwidth, providing better protection against electromagnetic radiation. The material is designed using genetic algorithms and can be easily manufactured due to its simple layer structure.
Researchers explore the capabilities of graphene-based metamaterials for various neurosurgical applications, including cancer treatment, neuroregeneration, and functional neurosurgery. Graphene's unique properties make it a promising material for developing new technologies in neurosurgery.
Acoustic metadevices enable the dynamic alteration of three-dimensional colloidal crystals' geometry in real-time. Researchers have developed reconfigurable metamaterials with potential applications in optics and acoustics, such as beam deflectors and acoustic barriers.
Scientists have created artificial nanostructures called metamaterials that can bend light, enabling the creation of larger pieces of material with engineered optical properties. This breakthrough has the potential to produce practical devices for real-life applications, such as fighter jets remaining invisible from detection systems.
Researchers have created an acoustic field rotator, a device that manipulates sound waves, using metamaterials. The device can rotate sound waves in a manner similar to electromagnetic or liquid wave counterparts, which could improve the operation of medical ultrasound machines and enhance image quality.
Researchers have developed a new artificial metamaterial that increases the light intensity and blink speed of a fluorescent dye molecule, speeding up underwater optical communications by 76 times. The material could eventually replace acoustic communications systems for short distance applications.
Researchers at the Ames Laboratory have developed a new method to generate broadband terahertz waves using metamaterials. This innovation has the potential to revolutionize fields such as non-invasive imaging and sensing, as well as high-speed information communication, processing, and storage.
Duke University researchers have successfully demonstrated wireless power transfer using a 'superlens' technology that focuses magnetic fields, enabling the transmission of power over distances much larger than traditional setups. This breakthrough could enable smaller, more practical wireless charging solutions for everyday use.
The article reviews alternative target-oriented invisibility strategy, referred to as an 'inverse design', which integrates the technical advantages of forward strategies. This approach uses anisotropic materials and non-superluminal propagation to provide cloaking performance with a relatively broad bandwidth.
Researchers at Duke University designed a power-harvesting device that efficiently captures microwave signals and converts them into electrical current. The device has an energy conversion rate of 37%, comparable to solar cells.
Scientists have created a metascreen cloak that can hide objects from microwaves, providing optimal functionality at specific frequencies and bandwidths. The researchers predict the technique's conformability and robustness will enable cloaking of oddly shaped objects.
The novel sensor uses a metamaterial to image scenes with fewer components, eliminating the need for lenses and mechanical positioners. This allows for faster and more efficient screening in security situations.
Researchers at Duke University have developed a new method to create large-area absorbers using silver nanocubes, which can control the absorption of electromagnetic waves. This breakthrough could lead to more efficient and cost-effective devices for applications such as sensors and solar cells.
A new DNA hydrogel created by Cornell researchers exhibits unique properties, flowing like a liquid but returning to its original shape when placed in water. The material has potential applications in drug delivery and tissue rebuilding, with the ability to be formed into desired shapes.
Researchers at Brown University are studying new optical materials to overcome size limitations in light-matter interactions at the quantum scale. Harnessing this power could enable technologies like high-capacity optical memory and secure encryption.
Researchers at Berkeley Lab develop 3D optical cavities with potential to generate intense nanolaser beams, suitable for various technologies including LEDs and optical sensing. The unique electromagnetic properties of these cavities enable new approaches for designing nano-scale optical cavities.
Scientists have developed a new type of nanostructured metamaterial that can dramatically change the properties of light, leading to potential breakthroughs in advanced solar cells and quantum computing. The metamaterial combines layers of silver and titanium oxide with tiny quantum dots, resulting in hyperbolic light behavior.
Researchers at Northwestern University have designed new metamaterials that exhibit negative compressibility transitions, where they contract when tensioned and expand when compressed. This discovery may enable new applications in protective mechanical devices and actuators.
Researchers at KIT have successfully manufactured a pentamode metamaterial, also known as a metafluid, which exhibits unique mechanical properties. The material's behavior is determined by varying parameters, allowing it to mimic the properties of water and other substances.
Metamaterials can control light by imprinting properties on photons, paving the way for commercial applications in 5-10 years. This breakthrough also enhances microscopic capabilities to reveal nanofeatures to the human eye.
Duke researchers have developed exotic materials that can control light at will, allowing for the creation of holograms in the infrared range. The team's innovative approach enables a broad range of optical devices with complex properties, opening up new possibilities for advanced optics and optoelectronics.
Researchers propose incorporating a lens made from new artificial materials to boost inductive coupling, increasing wireless power transfer efficiency. This could improve the efficiency of systems like cordless electric toothbrushes and mobile phones.
Researchers from Duke University and Boston College created a metamaterial that enhances magnetic forces without harming biological tissues or damaging electrical equipment. This breakthrough could lead to more efficient and safer applications of electromagnetism in devices such as magnetic levitation trains.
Researchers in the US have successfully cloaked a three-dimensional object standing in free space using a method known as plasmonic cloaking. The technique uses ordinary materials to bend light around objects, cancelling out scattering and rendering them invisible at all angles of observation.
Researchers at Michigan Technological University have made a major step toward creating superlenses that can see objects as small as 100 nanometers across using metamaterials and plasmons. This could enable ultra-high-resolution microscopes and cell phone cameras, making high-powered microscopy accessible to the public.
The new spectral imager will enable scientists to expand research in medical imaging, detecting explosives, and studying metamaterials. It will also be used to analyze materials, detect pathogens, and inspect pharmaceutical products.
Researchers at the University of Arizona have developed a new active metamaterial that demonstrates both power gain and negative refraction properties. This breakthrough enables the potential for high-performance microwave circuits and antennas with improved wireless communication and sensing capabilities.
Researchers propose using single photons and metamaterials for more powerful computers. The technology could harness the principles of quantum mechanics, allowing for more efficient data processing.
Using metamaterials to collect and transmit single photons, researchers aim to encode complex information on individual particles of light. This technology could significantly improve data security for the military and other high-stakes applications.
The journal Optical Materials Express has published a special Focus Issue on Nanoplasmonics and Metamaterials, highlighting recent advances in nano-optics. Researchers have successfully developed new optical materials and nanofabrication techniques to control light fields beyond the diffraction limit.
Researchers have created a technique to control the speed and direction of light using memory metamaterials, which can repeatedly change their properties. This innovation enables the manufacture of Gradient Index of Refraction (GRIN) devices for imaging and communication technologies with unprecedented precision.
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.