Search results for metamaterial

General Physics Apr 22, 2021

A new method to generate and control orbital angular momentum beams

Artificial spin ices (ASIs) are magnetic metamaterials with exotic properties that are dependent on their geometries. Over the past few years, many physicists have studied these materials, as their unique properties could ...

Polymers Apr 20, 2021

A future of helpful engineered 'living' machines?

Engineered, autonomous machines combined with artificial intelligence have long been a staple of science fiction, and often in the role of villain like the Cylons in the "Battlestar Galactica" reboot, creatures composed of ...

General Physics Apr 20, 2021

Holographic metasurface gas sensors for instantaneous visual alarms

Biological and chemical substances can be rapidly detected in real-time for public health and environmental monitoring purposes. In a new report now on Science Advances, Inki Kim and a research team in mechanical engineering, ...

General Physics Apr 16, 2021

Scientists create mechanism to precisely control soundwaves in metamaterials

University of Oregon physicists have developed a new method to manipulate sound—stop it, reverse it, store it and even use it later—in synthetic composite structures known as metamaterials.

Optics & Photonics Apr 12, 2021

Topological insulator metamaterial with giant circular photogalvanic effect

Topological insulators have notable manifestations of electronic properties. The helicity-dependent photocurrents in such devices are underpinned by spin momentum-locking of surface Dirac electrons that are weak and easily ...

Optics & Photonics Mar 23, 2021

Metasurfaces for manipulating terahertz waves

THz waves have a plethora of applications ranging from biomedical and medical examinations, imaging, environmental monitoring, to wireless communications, because of abundant spectral information, low photon energy, strong ...

Optics & Photonics Mar 19, 2021

Looking at optical Fano resonances under a new light

In 1961, physicist Ugo Fano provided the first theoretical explanation to an anomalous asymmetry observed in the spectral profiles of noble gases. He put forth an impactful interpretation of this phenomenon, now called 'Fano ...

Quantum Physics Mar 18, 2021

Scientists take step towards quantum supremacy

A Russian-German research team has created a quantum sensor that grants access to measurement and manipulation of individual two-level defects in qubits. The study by NUST MISIS, Russian Quantum Center and the Karlsruhe Institute ...

Nanophysics Mar 12, 2021

Hierarchical mechanical metamaterials offer multiple stable configurations

Multistable mechanical metamaterials are artificial materials whose microarchitecture offers more than two different stable configurations. Existing mechanical metamaterials rely on origami or kirigami-based designs with ...

Materials Science Mar 11, 2021

Team creates new ultralightweight, crush-resistant tensegrity metamaterials

Catastrophic collapse of materials and structures is the inevitable consequence of a chain reaction of locally confined damage—from solid ceramics that snap after the development of a small crack to metal space trusses ...

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