Current Metamaterials News and Events

Current Metamaterials News and Events, Metamaterials News Articles.
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Shining a light on nanoscale dynamics
Watching metamaterials at work in real time using ultrafast electron diffraction: a research team led by University of Konstanz physicist Peter Baum succeeds in using ultrashort electron pulses to measure light-matter interactions in nanophotonic materials and metamaterials. (2020-11-24)

Moths strike out in evolutionary arms race with sophisticated wing design
Ultra-thin, super-absorbent and extraordinarily designed to detract attention, the wings of moths could hold the key for developing technological solutions to survive in a noisy world. (2020-11-23)

Army, MIT explore materials for transforming robots made of robots
Scientists from the US Army and MIT's Center for Bits and Atoms created a new way to link materials with unique mechanical properties, opening up the possibility of future military robots made of robots. (2020-11-19)

Investigating optical activity under an external magnetic field
A new study published in EPJ B by Chengping Yin, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China, aims to derive an analytical model of optical activity in black phosphorous under an external magnetic field. (2020-11-06)

Creating perfect edges in 2D-materials
Ultrathin materials such as graphene promise a revolution in nanoscience and technology. Researchers at Chalmers University of Technology, Sweden, have now made an important advance within the field. In a recent paper in Nature Communications they present a method for controlling the edges of two-dimensional materials using a 'magic' chemical. (2020-10-19)

Topology-optimized thermal cloak-concentrator
Cloaking a concentrator in thermal conduction via topology optimization. A simultaneous cloaking and concentrating of heat flux is achieved through topology optimization, a computational structural design methodology. (2020-09-24)

Hyperbolic metamaterials exhibit 2T physics
According to Igor Smolyaninov of the University of Maryland, ''One of the more unusual applications of metamaterials was a theoretical proposal to construct a physical system that would exhibit two-time physics behavior on small scales.'' (2020-09-21)

Photonic amorphous topological insulator
The current understanding of topological insulators and their classical wave analogues, such as photonic topological insulators, is mainly based on topological band theory. Contrarily, Scientists in China and Singapore experimentally showed photonic topological insulators based on glass-like amorphous phases, for which the bandstructure is ill-defined. The persistence of topological protection is also found closely related to the glass-to-liquid transition. This interplay between topology and amorphousness paves the way for new classes of non-crystalline topological photonic bandgap materials. (2020-07-27)

Recent advances in 2D, 3D and higher-order topological photonics
A research team from South Korea and the USA has provided a comprehensive review covering the recent progress in topological photonics, a recently emerging branch of photonics. This review introduces the basics of topological band theory and various two-dimensional topological phases, followed by three-dimensional topological phases and approaches to achieve them. Recently emerging fields including topological degeneracies in nonzero dimensions, Maxwellian spin waves, higher-order photonic topological phases, and layer pseudospin are also discussed. (2020-07-27)

Origami metamaterials show reversible auxeticity combined with deformation recoverability
New research by Northwestern Engineering and Georgia Institute of Technology expands the understanding of origami structures, opening possibilities for mechanical metamaterials to be used in soft robotics and medical devices. (2020-07-27)

Trapping tiny particles: A versatile tool for nanomanipulation
Researchers at the Okinawa Institute of Science and Technology Graduate University have developed a novel device for single nanoparticle trapping, which has potential applications for drug discovery, disease monitoring, biomedical imaging, and more. (2020-07-26)

Temporal aiming with temporal metamaterials
Achieving a controllable manipulation of electromagnetic waves is important in many applications. Towards this goal, scientists from the UK and USA have proposed a new way to control the direction of wave-propagation in real time using temporal metamaterials having temporal permittivities that are rapidly changed in time from isotropic to anisotropic values. This new technique, which the authors named temporal aiming, will open new avenues for future real-time manipulation of electromagnetic waves using 4D metamaterial platforms. (2020-07-21)

Scientists achieve major breakthrough in preserving integrity of sound waves
In a breakthrough experiment, physicist and engineers at the CUNY ASRC have shown that it is possible to limit the movement of sound to a single direction without interruption even when there are deformations along the pathway. The findings pave the way for technologies with more robust sound wave integrity and advances in ultrasound imaging, sonar, and electronic systems that use surface acoustic wave technology. (2020-07-17)

Experiment confirms liquids show properties of solid bodies at microscopic scales
The collaborators are Kazan Federal University, Vereschagin Institute of High Pressure Physics (Russian Academy of Sciences), Queen Mary University of London, Imperial College London, Rutherford Appleton Laboratory, Wuhan University of Technology, and Sichuan University. (2020-07-13)

Thermophones offer new route to radically simplify array design, research shows
Scientists have pioneered a new technique to produce arrays of sound produced entirely by heat. (2020-07-02)

First confirmation of new theory by metamaterial
Physicists in Würzburg have experimentally demonstrated a novel effect for the first time by exploiting topological metamaterials. (2020-06-10)

Extraordinary modulation of light polarization with dark plasmons in magnetoplasmonic nanocavities
Enhancing magneto-optical effects is crucial for the size reduction of key photonic devices based on non-reciprocal propagation of light and to enable active nanophotonics. In this direction, an international team lead by CIC Nanogune (Spain) theoretically proposed and experimentally demonstrated a novel conceptual roadmap to boost magnetization-induced polarization modulation using multipolar dark plasmon modes in asymmetric magnetoplasmonic nanocavities. This new conceptual design could lead to broad applications in optical communications, sensing, and imaging. (2020-06-02)

Designing a flexible material to protect buildings, military personnel
Now, a team of engineers led by Guoliang Huang, a James C. Dowell Professor in the Mechanical and Aerospace Engineering Department at the University of Missouri College of Engineering, has designed a flexible material that can help buildings withstand multiple waves of energy traveling through a solid material, including the simultaneous forward and backward and side-to-side motions found in earthquakes. (2020-05-26)

VR and AR devices at 1/100 the cost and 1/10,000 the thickness in the works
Professor Junsuk Rho of the departments of mechanical engineering and chemical engineering and doctoral student in mechanical engineering Gwanho Yoon at POSTECH with the research team at Korea University have jointly developed moldable nanomaterials and a printing technology using metamaterials, allowing the commercialization of inexpensive and thin VR and AR devices. (2020-05-19)

Physicists have developed a sensor that can be used in both industry and biomedicine
Magnetic field sensors are largely used in industry, medicine, as well as in applied and fundamental physics. (2020-05-18)

Inexpensively locating friendly (and unfriendly) radio waves
Electrical engineers at Duke University have devised a low-cost method for passively locating sources of radio waves such as Wi-Fi and cellular communication signals. The technique could lead to inexpensive devices that can find radio wave devices like cellular phones or Wi-Fi emitters and cameras that can capture images using the radio waves already bouncing around the world all around us. (2020-05-12)

Ultra-long-working-distance spectroscopy with 3D-printed aspherical microlenses
Researchers at the Faculty of Physics, University of Warsaw have demonstrated micrometre-sized 3D-printed aspherical microlenses which can replace bulky microscope objectives in spectroscopic measurements of single point-like light emitters (e.g. quantum dots or atomically thin 2D materials). The proposed microlenses increase the available working distance, i.e. the distance between the lens front and the sample surface, by over two orders of magnitude, and open up new perspectives for a wide class of optical experiments. (2020-05-07)

Broadband enhancement relies on precise tilt
If a photon source could be placed on a single chip and made to produce photons at a high rate, this could enable high-speed quantum communication or information processing. In Applied Physics Reviews, a simple on-chip photon source using a hyperbolic metamaterial is proposed, and investigators carried out calculations to show that a prototype arranged in a precise way can overcome problems of low efficiency and allow for high repetition rates for on-chip photon sources. (2020-05-05)

Intricate magnetic configuration of 3D nanoscale gyroid networks revealed
A multinational team of researchers from Tohoku University and institutions in the UK, Germany and Switzerland has revealed the magnetic states of nanoscale gyroids, 3D chiral network-like nanostructures. The findings add a new candidate system for research into unconventional information processing and emergent phenomena relevant to spintronics. (2020-04-30)

Scientists use phononic crystals to make dynamic acoustic tweezers
A research team led by Prof. ZHENG Hairong from the Shenzhen Institutes of Advanced Technology (SIAT) of the Chinese Academy of Sciences use phononic crystals to make dynamic acoustic tweezers. (2020-04-30)

Engineers develop way to improve efficiency and heat tolerance of devices
When it comes to increasing electric storage efficiency and electric breakdown strength -- the ability of an electrical system to operate at higher voltage and temperatures with great efficiency -- increasing one traditionally has led to a decrease in the other. Penn State researchers, led by Qiming Zhang, distinguished professor of electrical engineering, recently developed a scalable method that relies on engineered materials to increase both properties. (2020-04-21)

A funnel of light
Physicists of the University of Würzburg, in a joint collaboration with colleagues from the University of Rostock, have developed a light funnel apparatus. It could serve as a new platform for hypersensitive optical detectors. (2020-03-27)

Researchers create a new acoustic smart material inspired by shark skin
USC researchers created a new sharkskin-inspired smart material that allows shifts in acoustic transmission on demand using magnets. As a result the new material can achieve multiple properties in one structure by switching between states, for example transmitting and also damping external noise transmission in a submarine through a single device. This smart material can recreate properties intrinsic to electronic devices such as switches, thus showing promise of smart sound transmission--a sound ''computer.'' (2020-03-10)

Virtualized metamaterials opens door for acoustics application and beyond
Scientists from the Hong Kong University of Science and Technology (HKUST) have realized what they called a virtualized acoustic metamaterial, in digitizing material response to an impulse response stored in a software program. (2020-03-03)

In acoustic waves, engineers break reciprocity with 'spacetime-varying metamaterials'
Working in an emerging field known to as 'spacetime-varying metamaterials,' University at Buffalo engineers have demonstrated the ability to break reciprocity in acoustic waves. (2020-02-17)

Harnessing the domino effect for deployable structures
A team of researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have harnessed the domino effect to design deployable systems that expand quickly with a small push and are stable and locked into place after deployment. (2020-02-10)

Induced flaws in metamaterials can produce useful textures and behavior
A new Tel Aviv University study shows how induced defects in metamaterials -- artificial materials the properties of which are different from those in nature -- also produce radically different consistencies and behaviors. The research has far-reaching applications for several engineering disciplines. (2020-02-05)

As seen in movies, new meta-hologram can be used as a communication tool
Junsuk Rho and his research team developed a multiplexed meta-hologram device operating at visible light. The newly developed technique can transmit information to multiple users from different locations. This can be employed in many hologram applications such as performance, exhibitions, automobiles and more. (2020-01-28)

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)

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