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Current Metamaterial News and Events, Metamaterial News Articles.
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Design and validation of world-class multilayered thermal emitter using machine learning
NIMS, the University of Tokyo, Niigata University and RIKEN jointly designed a multilayered metamaterial that realizes ultra-narrowband wavelength-selective thermal emission by combining the machine learning (Bayesian optimization) and thermal emission properties calculations (electromagnetic calculation). The joint team then experimentally fabricated the designed metamaterial and verified the performance. These results may facilitate the development of highly efficient energy devices. (2019-03-15)

BU researchers develop 'acoustic metamaterial' that cancels sound
Boston University researchers, Xin Zhang, a professor at the College of Engineering, and Ghaffarivardavagh, a Ph.D. student in the Department of Mechanical Engineering, released a paper in Physical Review demonstrating it's possible to silence noise using an open, ringlike structure, created to mathematically perfect specifications, for cutting out sounds while maintaining airflow. (2019-03-07)

'Meta-mirror' reflects sound waves in any direction
Researchers at Duke University have constructed a 'meta-mirror' device capable of perfectly reflecting sound waves in any direction. The proof-of-principle demonstration is analogous to looking directly into a mirror and only seeing the person next to you instead of your own face. (2019-03-07)

Researchers discover anti-laser masquerading as perfect absorber
Researchers at Duke University have discovered that a perfect absorber of electromagnetic waves they described in a 2017 paper can easily be tweaked into a sort of 'time-reversed laser' known as a coherent perfect absorber (CPA). (2019-02-15)

Hyperbolic metamaterials enable nanoscale 'fingerprinting'
Hyperbolic metamaterials are artificially made structures that can be formed by depositing alternating thin layers of a conductor such as silver or graphene onto a substrate. One of their special abilities is supporting the propagation of a very narrow light beam. This narrow beam can then be used to 'fingerprint' and obtain spatial and material information about nanometer-scale objects -- allowing identification without complete images. Researchers report their work in APL Photonics. (2019-02-12)

Researchers discover a metamaterial with inherently robust sound transport
Researchers at the Advanced Science Research Center (ASRC) at The Graduate Center of The City University of New York and at the City College of New York (CCNY) have developed a metamaterial that can transport sound in unusually robust ways along its edges and localize it at its corners. (2018-12-31)

Scientists design new material to harness power of light
Scientists have long known that synthetic materials -- called metamaterials -- can manipulate electromagnetic waves such as visible light to make them behave in ways that cannot be found in nature. That has led to breakthroughs such as super-high resolution imaging. Now, UMass Lowell is part of a research team that is taking the technology of manipulating light in a new direction. (2018-12-17)

The stiffest porous lightweight materials ever
Researchers at ETH have developed and manufactured a family of architectures that maximises the stiffness of porous lightweight materials. It's practically impossible to develop stiffer designs. (2018-12-12)

New concept for tractor beam from Star Wars developed
Physicists from ITMO University developed a model of an optical tractor beam to capture particles based on new artificial materials. Such a beam is capable of moving particles or cells towards the radiation source. The study showed that hyperbolic metasurfaces are promising for experiments on creating the tractor beam, as well as for its practical applications. The results are published in ACS Photonics. (2018-11-27)

Low cost, energy-saving radiative cooling system ready for real-world applications
University of Colorado Boulder and University of Wyoming engineers have successfully scaled up an innovative water-cooling system capable of providing continuous day-and-night radiative cooling for structures. The advance could increase the efficiency of power generation plants in summer and lead to more efficient, environmentally-friendly temperature control for homes, businesses, utilities and industries. (2018-10-26)

CCNY study breaks Förster resonant energy transfer (FRET) distance limit
Using engineered nanocomposite structures called metamaterials, a City College of New York-led research team reports the ability to measure a significant increase in the energy transfer between molecules. Reported in the journal ACS Photonics, this breakthrough breaks the Förster resonance energy transfer (FRET) distance limit of ~10-20 nanometers, and leads to the possibility of measuring larger molecular assemblies. (2018-10-25)

Where deep learning meets metamaterials
A new Tel Aviv University study uses 'deep-learning' computer networks inspired by the layered and hierarchical architecture of the human brain to design basic nanophotonic, metamaterial elements for energy harvesting and medical diagnostics. (2018-10-23)

Lift off for world-first ultrasound levitation that bends around barriers
Researchers at the University of Sussex have become the first in the world to develop technology which can bend sound waves around an obstacle and levitate an object above it. (2018-10-15)

Invisible needles
An international research group of scientists from Politecnico di Torino (Italy) and NUST MISIS (Russia) has developed a model of a new metamaterial, which will improve the accuracy of nano-sensors in optics and biomedicine by cloaking them from external radiation. The article reporting the results has been recently published in Scientific Reports, a high rank, prestigious interdisciplinary journal, edited by Nature Publishing House. (2018-08-28)

Trapping light that doesn't bounce off track for faster electronics
A new protective metamaterial 'cladding' prevents light from leaking out of the very curvy pathways it would travel in a computer chip. (2018-07-30)

NUST MISIS scientists present metamaterial for solar cells and nanooptics
A research team from the NUST MISIS Laboratory of Superconducting Metamaterials led by Alexey Basharin, Senior Lecturer and Candidate of Technical Sciences, has developed a metamaterial-dielectric that has unique characteristics and is easy to manufacture. This ease of access will allow researchers to use it to create the latest optical devices. The research results were published in Laser&Photonics Reviews. (2018-07-23)

Sandia light mixer generates 11 colors simultaneously
A multicolor laser pointer you can use to change the color of the laser with a button click -- similar to a multicolor ballpoint pen -- is one step closer to reality thanks to a new tiny synthetic material made at Sandia National Laboratories. Research on the new light-mixing metamaterial was published in Nature Communications earlier today. (2018-06-28)

Chinese researchers achieve 3D underwater acoustic carpet cloak first with 'Black Panther'-like features
A research team led by professor YANG Jun from the Institute of Acoustics (IOA) of the Chinese Academy of Sciences designed and fabricated a 3D underwater acoustic carpet cloak (UACC) using transformation acoustics. (2018-06-04)

Cloaking devices -- it's not just 'star trek' anymore
Scientists are now working to take cloaking devices from the dramatic realm of science fiction and make them real. Amanda D. Hanford, at Pennsylvania State University, is taking the introductory steps to make acoustic ground cloaks. These materials redirect approaching waves around an object without scattering the wave energy, concealing the object from the sound waves. During the 175th ASA Meeting, Hanford will describe the physics behind an underwater acoustic shield designed in her lab. (2018-05-10)

Dielectric metamaterial is dynamically tuned by light
Researchers at Duke University have built the first metal-free, dynamically tunable metamaterial for controlling electromagnetic waves. The approach could form the basis for technologies ranging from improved security scanners to new types of visual displays. While previous metamaterials control electromagnetic waves through their electric properties, the new technology can also manipulate them through their magnetic properties. It won't melt and can be reconfigured on the fly. (2018-05-01)

3-D printed active metamaterials for sound and vibration control
Researchers have been pushing the capabilities of materials by carefully designing precise structures that exhibit abnormal properties that can control acoustic or optical waves. However, these metamaterials are constructed in fixed geometries, meaning their unique abilities are always fixed. Now, new 3-D printed metamaterial developed by a team led by University of Southern California researchers can be remotely switched between active control and passive states. (2018-04-11)

Thin engineered material perfectly redirects and reflects sound
Metamaterials researchers from Duke University have created a thin plastic structure with geometric details allowing it to control the redirection and reflection of sound waves with almost perfect efficiency. (2018-04-10)

Silicon nanoblock arrays create vivid colors with subwavelength resolution
Osaka University researchers demonstrated a range of highly tunable vivid color pixels controlled by the geometry of a monocrystalline silicon metamaterial surface. The pixels created showed dual-color response dependent on the polarization of the light source, as well as subwavelength resolution. These materials have potential applications in high-resolution printing, particularly for anti-counterfeiting technology. They could also be used for optical data storage and three-dimensional displays. (2018-01-25)

Quantum control
An international team consisting of Russian and German scientists has made a breakthrough in the creation of seemingly impossible materials. They have managed to create the world`s first quantum metamaterial which can be used as a control element in superconducting electrical circuits. (2018-01-23)

Building blocks to create metamaterials
An international team, led by Chiara Daraio, uses techniques from quantum mechanics to create a system for engineering how metamaterials will interact with waves. (2018-01-17)

Push to twist: Achieving the classically impossible in human-made material
Researchers have designed a metamaterial that can twist to the right or the left in response to a straight, solid push. (2017-11-23)

Beyond good vibrations: New insights into metamaterial magic
Metamaterials have amazing potential--think invisibility cloaks and perfect lenses--but they are more likely to be found in a Harry Potter novel than a lab. To help bring them closer to reality, Michigan Technological University's Elena Semouchkina has gone back to basics and demonstrated that the fundamental physics of metamaterials is more complex than scientists once thought. (2017-11-06)

Synthetic material acts like an insect cloaking device
Synthetic microspheres with nanoscale holes can absorb light from all directions across a wide range of frequencies, making them a candidate for antireflective coatings, according to a team of Penn State engineers. The synthetic spheres also explain how the leaf hopper insect uses similar particles to hide from predators in its environment. (2017-11-03)

Spin-current generation gets mid-IR boost with plasmonic metamaterial
Researchers have begun to use metamaterials, engineered composites that have unique properties not found in nature, to enhance the absorption rates of plasmonic absorbers, and a team in Japan used a trilayered metamaterial to develop a wavelength-selective plasmonic metamaterial absorber on top of a spintronic device to enhance the generation of spin currents from the heat produced in the mid-infrared regime. The research is reported this week in APL Photonics. (2017-10-10)

A zero-index waveguide
In 2015, Harvard researchers developed the first on-chip metamaterial with a refractive index of zero, meaning that the phase of light could be stretched infinitely long. The metamaterial represented a new method to manipulate light and was an important step forward for integrated photonic circuits. Now, Harvard researchers have developed a zero-index waveguide compatible with current silicon photonic technologies. In doing so, the team observed a physical phenomenon that is usually unobservable -- a standing wave of light. (2017-10-09)

3-D printed models could improve patient outcomes in heart valve replacements
Heart valve models created with advanced 3-D printers could soon assist cardiologists in preparing to perform life-saving heart valve replacements. (2017-07-03)

Ultrafast tunable semiconductor metamaterial created
An international team of researchers has devised an ultrafast tunable metamaterial based on gallium arsenide nanoparticles, as published by Nature Communications. The new optical metamaterial paves the way to ultrafast information transfer on the nanoscale. (2017-05-17)

3-D printers open new design space for wireless devices
Duke materials scientists and chemists have shown a way to bring electromagnetic metamaterials into the third dimension using commercial 3-D printers. Printed metamaterial cubes were found to interact with radio and microwave electromagnetic waves 14 times more strongly than their 2-D counterparts. The breakthrough could revolutionize the rapid design and prototyping of radio frequency devices for Bluetooth, Wi-Fi, wireless sensing and communications. (2017-05-04)

Growth under pressure: New metamaterial designed with counterintuitive property
Inspired by 3-D printing, researchers explored development of one mechanical property called effective static compressibility. As they now report in Applied Physics Letters, by using a single cartridge it's possible to print a metamaterial which expands in size under hydrostatic pressure, even though it's made up of material which behaves normally under hydrostatic pressure -- that is, it shrinks. In principle, there is no limit to the negative value this material's effective compressibility can take. (2017-04-24)

Quantum mechanics are complex enough, for now...
Physicists have searched for deviations from standard quantum mechanics, testing whether quantum mechanics requires a more complex set of mathematical rules. To do so a research team designed a new photonic experiment using exotic metamaterials, which were fabricated at the University of California Berkeley. Their experiment supports standard quantum mechanics and allows the scientists to place bounds on alternative quantum theories. The results could help to guide theoretical work in a search for a more general version of quantum mechanics. (2017-04-21)

Nanoimprinted hyperlens array: Paving the way for practical super-resolution imaging
Research conducted by Professor Junsuk Rho's team at POSTECH, South Korea, has demonstrated a scalable and reliable fabrication process of a large scale hyperlens device based on direct pattern transfer techniques. The research team's new cost-effective fabrication method can be used to proliferate practical far-field and real-time super-resolution imaging devices that can be widely used in optics, biology, medical science, nanotechnology, and other related interdisciplinary fields. This achievement has been published in Scientific Reports. (2017-04-21)

New infrared-emitting device could allow energy harvesting from waste heat
A new reconfigurable device that emits patterns of thermal infrared light in a fully controllable manner could one day make it possible to collect waste heat at infrared wavelengths and turn it into usable energy. (2017-04-13)

Gold-plated crystals set new standard for natural gas detectors
Materials scientists and engineers have developed a sensor that is fast, sensitive and efficient enough to detect specific wavelengths of electromagnetic energy while on the move. The technology could actively scan areas for methane or natural gas leaks, monitor the health of vast fields of crops or quickly sort plastics for recycling. (2017-04-06)

Legos and origami inspire next-generation materials
Inspired by the fun of playing with Legos, an international team of researchers from Tianjin University of Technology and Harvard University have used the idea of assembling building-blocks to make the promise of next-generation materials a practical reality. (2017-03-28)

Transparent silver: Tarnish-proof films for flexible displays, touch screens
The thinnest, smoothest layer of silver that can survive air exposure has been laid down at the University of Michigan, and it could change the way touchscreens and flat or flexible displays are made. (2017-03-21)

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