Current Metamaterials News and Events | Page 2

Current Metamaterials News and Events, Metamaterials News Articles.
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Using a material's 'memory' to encode unique physical properties
As materials age, they 'remember' prior stresses and external forces, which scientists and engineers can then use to create new materials with unique properties. The finding is the result of a collaborative study between physicists at the University of Chicago and the University of Pennsylvania. (2019-12-20)

City College leads new photonics breakthrough
A new approach to trapping light in artificial photonic materials by a City College of New York-led team could lead to a tremendous boost in the transfer speed of data online. (2019-12-13)

Bridging surface plasmon polaritons and the digital world
Although the concept of digital coding metamaterial has been proposed to link the digital world and physical world, it is still challenging to manipulate the digital signals in confined electromagnetic waves in deep-subwavelength scale. Scientists in China and Singapore reported a breakthrough on digital spoof surface plasmon polariton (SSPP) metamaterial to achieve the combination of tightly confined SSPP waves and digital coding and modulation technologies, which opens a new avenue to novel metamaterials applications. (2019-11-22)

BU researchers design 'intelligent' metamaterial to make MRIs affordable and accessible
Boston University researchers have developed a new, 'intelligent' metamateria l-- which costs less than ten bucks to build -- that could revolutionize magnetic resonance imaging (MRI), making the entire MRI process faster, safer, and more accessible to patients around the world. (2019-11-05)

New metasurface design can control optical fields in three dimensions
A team led by scientists at the University of Washington has designed and tested a 3D-printed metamaterial that can manipulate light with nanoscale precision. As they report in a paper published Oct. 4 in Science Advances, their designed optical element focuses light to discrete points in a 3D helical pattern. (2019-10-04)

Machine learning finds new metamaterial designs for energy harvesting
Electrical engineers at Duke University have harnessed the power of machine learning to design dielectric (non-metal) metamaterials that absorb and emit specific frequencies of terahertz radiation. The technique drops the time needed to simulate possible configurations from more than 2,000 years to 23 hours, which should facilitate the design of sustainable types of thermal energy harvesters and lighting. (2019-09-25)

Artificial materials reconstruct the porpoise's echolocation
Here, a study proposed a physical directional emission model to bridge the gap between porpoises' biosonar and artificial metamaterial. Inspired by the anatomical and physical properties of the porpoise's biosonar transmission system, researchers fabricated a hybrid metamaterial system composed of multiple composite structures. The metamaterial-based physical model may be helpful to achieve the physical mechanisms of porpoise biosonar detection and has diverse applications in underwater acoustic sensing, ultrasound scanning, and medical ultrasonography. (2019-09-19)

Hyperbolic paraboloid origami harnesses bistability to enable new applications
Researchers at the Georgia Institute of Technology and the University of Tokyo are looking the 'hypar' origami for ways to leverage its structural properties. (2019-09-17)

Researchers use metamaterials to create two-part optical security features
Researchers have developed advanced optical security features that use a two-piece metamaterial system to create a difficult-to-replicate optical phenomenon. The new security features could offer improved forgery protection for high-value products or banknotes and enhance encryption of information such as pin numbers that are physically sent to recipients. (2019-09-12)

New metamaterial morphs into new shapes, taking on new properties
Electrochemical reactions drive shape change in new nanoarchitected metamaterial. (2019-09-11)

Researchers demonstrate first all-metamaterial optical gas sensor
At FiO + LS conference, researchers will discuss the first fully integrated, non-dispersive infrared (NDIR) gas sensor enabled by specially engineered synthetic materials known as metamaterials. The sensor has no moving parts, requires little energy to operate and is among the smallest NDIR sensors ever created. (2019-08-29)

NUS 'smart' textiles boost connectivity between wearable sensors by 1,000 times
Researchers from the National University of Singapore have incorporated metamaterials into conventional clothing to dramatically improve signal strength between wearable electronic devices. This innovation could have future applications in high-tech athletic wear and medical apparel. (2019-07-16)

Artificial intelligence (AI) designs metamaterials used in the invisibility cloak
The research group of Prof. Junsuk Rho, Sunae So and Jungho Mun of Department of Mechanical Engineering and Department of Chemical Engineering at POSTECH developed a design with a higher degree of freedom which allows to choose materials and to design photonic structures arbitrarily by using Deep Learning. (2019-07-14)

New flatland material: Physicists obtain quasi-2D gold
Researchers from the MIPT Center for Photonics and 2D Materials have synthesized a quasi-2D gold film, showing how materials not usually classified as two-dimensional can form atomically thin layers. The study shows that by using monolayer molybdenum disulfide as an adhesion layer, quasi-2D gold can be deposited on an arbitrary surface. (2019-05-23)

Researchers develop novel framework for tracking developments in optical sensors
SUTD researchers together with international researchers conduct develop a 3D technology map which systematically compares optical sensors, providing a much needed benchmark to define the standards and track developments in this rapidly growing industry. (2019-05-16)

Academics show how to create a spotlight of sound with LEGO-like bricks
Informatics experts create low-cost directional beams of sound. Using age-old principles of magnifying glasses, lighthouses and telescopes to create state-of-the-art sound. Bringing the vision of Minority Report into reality and transforming possibilities of entertainment industry (2019-05-07)

Scientists take a 'metamaterials' approach to earthquake damage
At the SSA 2019 Annual Meeting, seismologists from around the world will discuss how metamaterial theory might be applied to everything from developing deflective barriers to manipulating the layout of buildings within a city as a way to minimize the impact of damaging surface seismic waves. (2019-04-26)

Photonics: The curious case of the disappearing cylinders
A pair of researchers at Tokyo Tech describes a way of making a submicron-sized cylinder disappear without using any specialized coating. Their findings could enable invisibility of natural materials at optical frequency and eventually lead to a simpler way of enhancing optoelectronic devices, including sensing and communication technologies. (2019-04-22)

Fast and selective optical heating for functional nanomagnetic metamaterials
In a recent article published in Nanoscale, researchers from the Nanomagnetism group at nanoGUNE demonstrate the use of hybrid magnetic-plasmonic elements to facilitate contactless and selective temperature control in magnetic functional metamaterials. (2019-04-16)

Researchers 3D print metamaterials with novel optical properties
A team of engineers has developed a series of 3D printed metamaterials with unique microwave or optical properties that go beyond what is possible using conventional optical or electronic materials. The fabrication methods developed by the researchers demonstrate the potential, both present and future, of 3D printing to expand the range of geometric designs and material composites that lead to devices with novel optical properties. (2019-04-08)

Intelligent metamaterials behave like electrostatic chameleons
Chinese physicists have developed so-called metashells made of smart, adaptable metamaterials. In a recent study published in EPJ B, they show how hollow metamaterial shells can adapt to the characteristics of the materials they hold inside. (2019-04-02)

4D-printed materials can be stiff as wood or soft as sponge
Imagine smart materials that can morph from being stiff as wood to as soft as a sponge - and also change shape. Rutgers University-New Brunswick engineers have created flexible, lightweight materials with 4D printing that could lead to better shock absorption, morphing airplane or drone wings, soft robotics and tiny implantable biomedical devices. Their research is published in the journal Materials Horizons. (2019-03-22)

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)

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)

Physicists uncover the topological origin of surface electromagnetic waves
In work that provides insights for several areas of wave physics -- Maxwell electromagnetism, topological quantum states, and plasmonics/metamaterials -- scientists showed that the well-known surface electromagnetic waves at interfaces between homogeneous isotropic media, obtained within classical Maxwell's electromagnetism, also have a purely topological origin, similar to quantum topological states. (2019-02-04)

UC Riverside physicists create exotic electron liquid
By bombarding an ultrathin semiconductor sandwich with powerful laser pulses, physicists at the University of California, Riverside, have created the first 'electron liquid' at room temperature. The achievement opens a pathway for development of the first practical and efficient devices to generate and detect light at terahertz wavelengths -- between infrared light and microwaves. Such devices could be used in applications as diverse as communications in outer space, cancer detection, and scanning for concealed weapons. (2019-02-04)

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)

Tailoring the nonlinearity with time domain metasurface for wireless communication
High-efficiency harmonic conversion has been a crucial problem in microwave and optical frequencies. The current harmonic generation techniques usually suffer from drawbacks of low efficiency or small-power harmonic output, which poses great challenges for engineering applications, such as the mobile communication. Scientists in China discover a new route to realize harmonic manipulations with high conversion efficiency by proposing a time-domain digital coding metasurface, which directly results in a new architecture of wireless communication system. (2018-12-05)

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)

New technique to make objects invisible proposed
Researchers at the University of Extremadura have demonstrated the electromagnetic invisibility of objects using an alternative technique, based on filler cloaking. The novelty lies in achieving invisibility from the interior of the objects, without adding external layers. This approach brings numerous advantages and opens up new applications in optics, communications systems and bioengineering. (2018-11-26)

Researchers defy 19th Century law of Physics in 21st century boost for energy efficiency
Research led by a University of Sussex scientist has turned a 156-year-old law of physics on its head. (2018-11-21)

Physicists discover new way of resonance tuning for nonlinear optics
A research team from ITMO University and the Australian National University has discovered that different metasurfaces exhibit the same behavior provided a symmetry breaking is introduced to their unit cells 'meta-atoms'. Asymmetry of meta-atoms results in high-quality (high Q) resonances in the transmittance spectra of metasurfaces. It opens the way to control an optical response, which is highly desirable for practical applications. The results of this research were published in Physical Review Letters. (2018-11-14)

Physicists name and codify new field in nanotechnology: 'electron quantum metamaterials'
New materials are being synthesized by twisting and stacking atomically thin layers. To bring it all under one roof, physicists Nathaniel Gabor of UC Riverside, and Justin C. W. Song of Nanyang Technological University, Singapore, propose this field of research be called ''electron quantum metamaterials.'' They have just published a perspective article in Nature Nanotechnology, in which they highlight the potential of engineering synthetic periodic arrays with feature sizes below the wavelength of an electron. (2018-11-05)

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)

New nanoparticle superstructures made from pyramid-shaped building blocks
In research that may help bridge the divide between the nano and the macro, Brown University chemists have used pyramid-shaped nanoparticles to create what might be the most complex macroscale superstructure ever assembled. (2018-09-19)

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)

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