Results 21 to 30 of about 14,948 (260)

A Point-of-Care Testing Device Utilizing Graphene-Enhanced Fiber Optic SPR Sensor for Real-Time Detection of Infectious Pathogens

open access: yesBiosensors, 2023
Timely detection of highly infectious pathogens is essential for preventing and controlling public health risks. However, most traditional testing instruments require multiple tedious steps and ultimately testing in hospitals and third-party laboratories.
Shiyu Jiang   +12 more
doaj   +1 more source

Magnetoelastic metamaterials [PDF]

open access: yes2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC), 2011
The study of advanced artificial electromagnetic materials, known as metamaterials, provides a link from material science to theoretical and applied electrodynamics, as well as to electrical engineering. Being initially intended mainly to achieve negative refraction, the concept of metamaterials quickly covered a much broader range of applications ...
Lapine, Mikhail   +3 more
openaire   +3 more sources

Topological Metamaterials

open access: yesChemical Reviews, 2023
One of the most significant breakthroughs in physics of the last decade has been the discovery that materials with non-trivial topological properties for electronic, electromagnetic, acoustic and mechanical responses can be designed and manufactured at our will through engineered metamaterials (MMs).
Xiang Ni   +3 more
openaire   +3 more sources

Up Scalable Full Colour Plasmonic Pixels with Controllable Hue, Brightness and Saturation

open access: yesScientific Reports, 2017
It has long been the interests of scientists to develop ink free colour printing technique using nano structured materials inspired by brilliant colours found in many creatures like butterflies and peacocks.
Renilkumar Mudachathi, Takuo Tanaka
doaj   +1 more source

Adaptive Multichannel Terahertz Communication by Space-Time Shared Aperture Metasurfaces

open access: yesIEEE Access, 2020
We propose a technique for adaptive multichannel communication in the low-terahertz frequency regime through simultaneous and independent multifrequency multibeam scanning via a single time-modulated metasurface consisting of graphene micro-patch ...
Hooman Barati Sedeh   +2 more
doaj   +1 more source

Two-dimensional control of light with light on metasurfaces

open access: yesLight: Science & Applications, 2016
The ability to control the wavefront of light is fundamental to focusing and redistribution of light, enabling many applications from imaging to spectroscopy.
Maria Papaioannou   +4 more
doaj   +1 more source

Optical nonreciprocity via transmissive time-modulated metasurfaces

open access: yesNanophotonics, 2022
The frequency mixing property of time-modulated metasurfaces, attributed to the well-known phenomenon of temporal photonic transition, has led to several exotic functionalities in the last lustrum. Based on this concept, we demonstrate the possibility of
Barati Sedeh Hooman   +2 more
doaj   +1 more source

Metamaterial superconductors [PDF]

open access: yesNanophotonics, 2015
Abstract Searching for natural materials exhibiting larger electron‐electron interactions constitutes a traditional approach to high‐temperature superconductivity research. Very recently, we pointed out that the newly developed field of electromagnetic metamaterials deals with the somewhat related task of ...
Smolyaninov Igor I.   +1 more
openaire   +5 more sources

Holographic free-electron light source

open access: yesNature Communications, 2016
Controlling the generation of light in nano-scale systems is a challenging task and is of growing importance. Here, Li et al. propose a means of controlling the wavefront of light emanating from a single nano scale emitter by holographic principles using
Guanhai Li   +4 more
doaj   +1 more source

Multiband terahertz metamaterial perfect absorber for microorganisms detection

open access: yesScientific Reports, 2023
We report a multi-resonant terahertz (THz) metamaterial perfect absorber (MPA)-based biosensor in the working frequency range of $$0 - 3.8 THz$$ 0 - 3.8 T H z for sensing of microorganisms (such as fungi, yeast) and wheat pesticides. Nearly $$100\%$$ 100
Ruchi Bhati, Anil K Malik
doaj   +1 more source

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