Articles tagged with Metamaterials
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Researchers are investigating whether metamaterial concept can be scaled up to city size to reduce earthquake damage. Simulations show that structures act as resonators, plucking energy from Rayleigh waves, and optimal building arrangement could reduce damage by decreasing height radially inward.
RIT Professor Grover Swartzlander is receiving a Phase II award from NASA's NIAC program to explore the feasibility of diffractive solar sails. Diffractive solar sails could be more efficient and withstand the heat of the sun better than traditional reflective sails.
Huachen Cui, Ryan Hensleigh, Hongshun Chen and Xiaoyu Zheng won the JMR Paper of the Year Award for their work on additive manufacturing and high-temperature ceramic metamaterials. The paper demonstrates an approach to fabricate three-dimensional microarchitected materials with high specific strength.
Hybrid magnetic-plasmonic elements enable contactless temperature control in magnetic functional metamaterials, facilitating local, efficient, and fast heating schemes. Sublattice-specific heating on sub-nanosecond time scales is achieved using plasmon-assisted photo-heating.
Engineers at Tufts University have created novel optical devices using 3D printed metamaterials with unique microwave or optical properties. The researchers developed a hybrid fabrication approach to create complex geometries and novel functionalities for wavelengths in the microwave range.
A new class of intelligent metamaterials, called metashells, has been developed to respond to nearby objects. These materials can change their physical characteristics, such as permittivity, in accordance with the electromagnetic properties of the material they contain, enabling adaptive behavior.
Rutgers engineers created flexible, lightweight materials that change shape with temperature, enabling better shock absorption and morphing airplane or drone wings. The materials can be reshaped and returned to their original form on demand, opening up possibilities for soft robotics, tiny implantable biomedical devices, and more.
Researchers at the University of Pennsylvania have demonstrated a device that uses metamaterials to solve integral equations, a common problem in science and engineering. The device operates as an analog computer with light, solving problems orders of magnitude faster than digital computers.
Researchers developed a method to design metamaterial structures with optimum thermal radiation performance, using machine learning and electromagnetic calculations. The new nanostructure demonstrated an exceptionally narrow thermal emission spectral band, exceeding conventional limits.
Boston University researchers created an open, ringlike structure that perfectly cancels out sounds while maintaining airflow, silencing nearly all noise from a loudspeaker. The acoustic metamaterial can be customized to fit various environments, including drones, fans, and MRI machines.
A team of researchers has created a metamaterial that can transport sound in unusually robust ways along its edges and localize it at its corners. This unique property may improve technologies like sonars and ultrasound devices, making them more resistant to defects.
Researchers at UMass Lowell have created a new class of metamaterial that can change the color of light, enabling on-chip optical communication. This technology could lead to smaller, faster, and more efficient computer chips with wider bandwidth and better data storage.
Researchers Nathaniel Gabor and Justin C. W. Song propose a new field of study, electron quantum metamaterials, which involves manipulating electrons in subwavelength structures to exhibit unusual behavior. This field has the potential to produce radically new phenomena, such as superconductivity in twisted bilayer graphene.
University of Sussex researchers create SoundBender, a hybrid system that combines phased arrays and acoustic metamaterials to overcome limitations in previous ultrasound levitation set-ups. The technology enables real-time adjustments, tactile feedback, and manipulation of non-solid objects.
Researchers from Politecnico di Torino and NUST MISIS create a new metamaterial that cloaks nano-sensors, improving their accuracy in optics and biomedicine. The development is part of the Italian-Russian project ANASTASIA, funded by Compagnia di San Paolo.
Researchers at Sandia National Laboratories have developed a tiny synthetic material that can mix two laser pulses to produce 11 new colors, offering potential applications in fields such as archaeology, extraterrestrial life detection, and fiber-optics communication. The metamaterial's efficiency is currently low, but further work aim...
Acoustic cloaking technology has been developed by researchers at Penn State University, which uses metamaterials to bend sound waves around an object, making it appear invisible to underwater instruments. The team successfully tested their design using a 3-foot-tall pyramid structure in an underwater research tank.
The new 3D printed metamaterials, developed by researchers at the University of Southern California, can block sound waves and mechanical vibrations remotely using a magnetic field. They have the potential to be used for noise cancellation, vibration control, and sonic cloaking.
Researchers have developed a quantum metamaterial composed of twin qubits, which can be used as a control element in superconducting electronic devices. The material exhibits unique properties that disappear when separated into its components, making it a promising candidate for future applications.
Scientists create 3D metamaterials that twist when compressed using computer simulations and laser microprinting. The material can respond in a chiral way, challenging classical solid mechanics, and could have applications in space missions, optics, and prosthetics.
Researchers have discovered a new way to simulate Einstein's theory of general relativity in electronic systems, enabling the creation of 3D electron lenses and electronic invisibility devices. The discovery uses Weyl metamaterials, which combine ideas from solid-state physics, particle physics, and cosmology.
Researchers at Michigan Technological University have discovered that the shape and repetitive organization of building blocks within metamaterials affect refraction, contradicting previous assumptions. This finding has significant implications for the development of devices such as invisibility cloaks and perfect lenses.
Researchers in Japan have developed a wavelength-selective plasmonic metamaterial absorber to enhance the generation of spin currents from heat produced in the mid-infrared regime. The unique combination enables stronger light absorption and shows excellent tenability of these metamaterials' resonance wavelengths.
A Penn State researcher has been awarded nearly $8 million by DARPA, the US Navy, and Lockheed Martin to continue his work on engineered metamaterials. The project aims to develop new algorithms and simulation tools for designing optical materials, with potential applications in electromagnetic cloaking technology.
Duke researchers have created 3D-printed electromagnetic metamaterials with potential to revolutionize the design and prototyping of radio frequency applications. The use of a highly conductive material, Electrifi, enables rapid construction of complex devices and accelerates the design process.
Researchers design a metamaterial that expands in size under increasing hydrostatic pressure, which can advance 3D printing beyond natural limitations. The structure's unique properties make it stable and physical despite violating fundamental laws of physics.
Researchers have tested an alternative version of quantum mechanics that uses hyper-complex numbers, predicting new effects and commutation properties. The study found no need for these alternative rules to describe the experiment, but emphasizes the need for further testing.
Researchers have developed a new reconfigurable device that can emit thermal infrared light in a fully controlled manner, enabling efficient energy harvesting from waste heat. The technology has potential applications in thermophotovoltaics and could be used to convert heat into energy for various purposes.
Researchers at Duke University have developed a sensor that detects specific wavelengths of electromagnetic energy using gold-plated crystals. The technology outperforms existing detectors in size, weight, power, speed and cost, making it ideal for detecting methane or natural gas leaks, monitoring crop health and recycling plastics.
A team of researchers has designed a standard set of building-blocks to assemble complex structures and engineer arbitrary 3D metamaterials. The breakthrough aims to overcome the bottleneck in translating scientific progress to commercial applications.
Researchers have created a way to make metamaterials with a single inclusion, providing easier fabrication and tailoring light-matter interactions. This 'photonic doping' technique has implications for flexible photonics, information processing systems, and telecommunications applications.
Researchers have invented a super-material that bends, shapes and focuses sound waves, pushing the boundaries of metamaterials. This innovation has the potential to revolutionize medical imaging and personal audio, allowing for precise control over sound waves.
Berger's Isomax material achieves low density and uncommon strength, making it suitable for various applications such as aerospace structures and robotic machines. The study's findings support the concept's potential for efficient fabrication and manufacturing.
Researchers at the University of Texas at Austin have developed new mechanical metamaterials that can easily transmit motion in one direction while blocking it in another. These nonreciprocal materials have potential applications in soft robotics, prosthetics, and energy harvesting.
Researchers developed a scalable metamaterial film that efficiently reflects solar energy while allowing objects to shed heat through infrared thermal radiation. The material has been successfully tested in field trials, demonstrating significant radiative cooling powers even under direct sunlight with zero energy consumption.
Researchers at the University of Michigan have developed a novel metamaterial that can switch between being hard and soft, maintaining its properties despite repeated changes. This breakthrough enables potential applications in various fields, including car safety and rocket technology.
Researchers from Harvard have developed a general framework to design reconfigurable metamaterials. This tool allows for the creation of materials that can switch between multiple functions and shapes autonomously, enabling new possibilities in structural engineering, aerospace, and beyond.
A new magnetic mirror-based device has been developed to map radiation from shortly after the Big Bang, shedding light on gravitational waves and the early universe. The device can modulate polarization across a wide range of microwave frequencies, overcoming a major challenge in detecting B-mode polarization.
Researchers at Chalmers University of Technology have developed a method to manipulate light using metamaterials, allowing it to follow any predetermined path along a surface. This innovation has vast applications in optical chips for reliable data delivery and faster routers.
Researchers develop a metamaterial device that can blend into its surroundings like a chameleon, using vanadium dioxide to trigger phase changes. The device's ability to change state is tunable by altering the current flowing through it.
Researchers at MIT have created tiny, star-shaped structures that shrink in size when heated to 540 degrees Fahrenheit. The structures, made from interconnected beams with different thermal expansion coefficients, exhibit negative thermal expansion and may enable applications in heat-resistant circuit boards.
Researchers propose large-scale metamaterials as seismic shields to protect areas from earthquake damage. The shields work by inhibiting the propagation of incoming seismic waves through interference effects.
Engineers from the University of Bristol have developed a new shape-changing metamaterial using Kirigami, a class of material engineered to produce unusual properties. The Kirigami metamaterial can seamlessly change shape, exhibits large variations in mechanical performance with small geometry changes.
Researchers at Tel Aviv University have created a new approach to manufacturing mechanical metamaterials that can deform in a complex manner. This breakthrough may lead to more comfortable and user-friendly prosthetics, as well as applications in soft robotics and wearable technologies.
Researchers from Lomonosov Moscow State University demonstrated the effect of all-optical switching between streams of photons using non-linear metamaterials, which can manipulate photons in a new way. This breakthrough could lead to faster data transfer and high-speed communication technologies.
Scientists have developed a system that can efficiently transfer electrical energy between separated circuits using metamaterials. This breakthrough enables wireless charging of mobile devices at longer distances than current technology.
The new lens uses metamaterials and 3D printing to counter the intrinsic imperfections of typical lenses, enabling flawless images without additional corrective components. The technology has potential applications in biomedical research and security imaging, making terahertz imaging cheaper, higher resolution, and more available.
Researchers have discovered a new metamaterial that radiates heat in specific directions, making it ideal for use with thermophotovoltaic cells. This breakthrough could lead to highly efficient cells that harvest heat from surroundings and convert it into electricity.
The University of Kansas researcher will receive a three- to five-year grant to develop new theories and experiment with ultrafast lasers. The goal is to overcome the absorption problem in metamaterials, enabling breakthroughs in imaging applications such as medical research and next-generation microscopes.
Case Western Reserve University scientists develop an optical sensor using nanostructured metamaterials, enabling detection of single lightweight molecules in dilute solutions. The device has been shown to be 1 million times more sensitive than current methods, with potential applications for early cancer diagnosis and treatment.
A Georgia Institute of Technology researcher proposes a new directional separation technique using metamaterials, cloaking one compound while concentrating another. The technique could help reduce energy required for certain chemical and biomolecular processes.
Researchers from Karlsruhe Institute of Technology (KIT) have developed the world's smallest lattice structure made of glassy carbon, with struts and braces less than 200 nm in diameter. The structure boasts higher specific strength than most solids and has potential applications as electrodes, filters, or optical components.
The technology uses metamaterials to improve the signal-to-noise ratio, resulting in higher-resolution images and faster scanning times. This innovation has the potential to revolutionize medical diagnostics, particularly in cancer detection and tissue analysis.
Scientists have discovered an unconventional phase transition between photonic crystals and metamaterials, allowing for the creation of new electromagnetic materials with tailored properties. The study provides a foundation for designing and fabricating such materials.
Researchers have developed a metamaterial that can more than double the resolution of acoustic imaging, focus acoustic waves, and control angles. This breakthrough has potential applications in medical diagnostics and structural integrity testing.
Penn researchers develop ultra-thin aluminum oxide plates with nanoscale thickness, exhibiting remarkable mechanical strength and stiffness. These corrugated plates, like an egg carton on the nanoscale, can bend, twist, and recover their shape without additional support.
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.