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Optics & Photonics Apr 1, 2024

A novel liquid crystal-based tunable dielectric metasurface

Dielectric metasurfaces represent one of the cutting-edge research and application directions in optics. They not only possess the advantage of low loss but also enable the realization of device thicknesses at subwavelength ...

Optics & Photonics Apr 1, 2024

Team demonstrates an ultra-broadband tunable terahertz absorber of graphene and hierarchical plasmonic metamaterials

Perfect absorption arises from the strong interaction of valence electrons with light in a conducting material. Optical metamaterial is an effective approach to exploit the superior photon capture capability. Thus, the perfect ...

Space Exploration Mar 27, 2024

NASA selects first lunar instruments for Artemis astronaut deployment

NASA has chosen the first science instruments designed for astronauts to deploy on the surface of the moon during Artemis III. Once installed near the lunar South Pole, the three instruments will collect valuable scientific ...

Nanomaterials Mar 26, 2024

Construction of dual heterogeneous interface between zigzag-like Mo-MXene nanofibers and small CoNi@NC nanoparticles

Two-dimensional transition metal carbides (MXene) possess attractive conductivity and abundant surface functional groups, providing immense potential in the field of electromagnetic wave (EMW) absorption. However, high conductivity ...

Optics & Photonics Mar 23, 2024

Research team proposes a novel type of acoustic crystal with smooth, continuous changes in elastic properties

In dim light a cat sees much better than you do, as do dogs and nocturnal animals. That's because the structure of a cat's eye has a tapetum lucidum, a mirror-like layer immediately behind the retina. Light entering the eye ...

Optics & Photonics Mar 22, 2024

Breakthrough in light manipulation: Unveiling novel finite barrier bound states

Exploring wave propagation and localization in various media has been a core focus in optics and acoustics. Specifically, in photonics and phononics, scientists have been dedicated to understanding and controlling the behavior ...

Nanophysics Mar 6, 2024

Selective operation of enhancement and depletion modes of nanoscale field-effect transistors

Nanoscale transistors are in demand for efficient digital circuits, and biasing of each device is critical. These stringent biasing conditions can be relaxed by obtaining precise values of the threshold voltages of the transistor. ...

General Physics Feb 26, 2024

Accelerator-on-a-chip advance steers and accelerates electrons at the microchip scale

Stanford researchers are getting closer to building a tiny electron accelerator based on "accelerator-on-a-chip" technology with broad potential applications in studying physics as well as medical and industrial uses.

Nanophysics Feb 21, 2024

Angle-dependent holograms made possible by metasurfaces

Recently, a research team from Pohang University of Science and Technology (POSTECH) has employed metasurfaces to fabricate angle-dependent holograms with multiple functions. This technology allows holograms to display multiple ...

Nanophysics Feb 12, 2024

Breakthrough in single-photon integration holds promise for quantum computing, cryptography

A recent study has unveiled a significant advancement toward the on-chip integration of single-photon sources at room temperature. This achievement represents a significant step forward in the field of quantum photonics and ...

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