Results 31 to 40 of about 1,083,982 (306)

Reduction in Crosstalk between Integrated Anisotropic Optical Waveguides

open access: yesPhotonics, 2023
The minimization of waveguide crosstalk is a long-standing challenge for optical engineers. Nowadays, the most popular technique to suppress crosstalk is anisotropic nanostructures, realized as subwavelength stripes between waveguides.
Dmitriy Grudinin   +5 more
doaj   +1 more source

Hybrid Metal-Dielectric-Metal Sandwiches for SERS Applications

open access: yesNanomaterials, 2021
The development of efficient plasmonic nanostructures with controlled and reproducible surface-enhanced Raman spectroscopy (SERS) signals is an important task for the evolution of ultrasensitive sensor-related methods. One of the methods to improving the
Mikhail K. Tatmyshevskiy   +11 more
doaj   +1 more source

Broadband Optical Properties of Atomically Thin PtS2 and PtSe2

open access: yesNanomaterials, 2021
Noble transition metal dichalcogenides (TMDCs) such as PtS2 and PtSe2 show significant potential in a wide range of optoelectronic and photonic applications. Noble TMDCs, unlike standard TMDCs such as MoS2 and WS2, operate in the ultrawide spectral range
Georgy A. Ermolaev   +14 more
doaj   +1 more source

Collective excitations in 2D materials [PDF]

open access: yesNature Reviews Physics, 2020
Research on 2D materials has been one of the fastest-growing fields in condensed matter physics and materials science in the past 10 years. The low dimensionality and strong correlations of 2D systems give rise to electronic and structural properties, in the form of collective excitations, that do not have counterparts in ordinary 3D materials used in ...
Aleksandr Rodin   +3 more
openaire   +2 more sources

Surface-Enhanced Raman Spectroscopy on Hybrid Graphene/Gold Substrates near the Percolation Threshold

open access: yesNanomaterials, 2020
Graphene is a promising platform for surface-enhanced Raman spectroscopy (SERS)-active substrates, primarily due to the possibility of quenching photoluminescence and fluorescence.
Dmitry E. Tatarkin   +7 more
doaj   +1 more source

Scanning Near-Field Optical Microscopy of Ultrathin Gold Films

open access: yesNanomaterials, 2023
Ultrathin metal films are an essential platform for two-dimensional (2D) material compatible and flexible optoelectronics. Characterization of thin and ultrathin film-based devices requires a thorough consideration of the crystalline structure and local ...
Dmitry I. Yakubovsky   +7 more
doaj   +1 more source

Optical Constants and Structural Properties of Epitaxial MoS2 Monolayers

open access: yesNanomaterials, 2021
Two-dimensional layers of transition-metal dichalcogenides (TMDs) have been widely studied owing to their exciting potential for applications in advanced electronic and optoelectronic devices.
Georgy A. Ermolaev   +14 more
doaj   +1 more source

Curvature geometry in 2D materials

open access: yesNational Science Review, 2023
ABSTRACT The two-dimensional (2D) material family can be regarded as the extreme externalization form of the matter in the planar 2D space. These atomically thin materials have abundant curvature structures, which will significantly affect their atomic configurations and physicochemical properties.
Nan Wei   +5 more
openaire   +2 more sources

Engineering covalently bonded 2D layered materials by self-intercalation

open access: yes, 2020
Two-dimensional (2D) materials1–5 offer a unique platform from which to explore the physics of topology and many-body phenomena. New properties can be generated by filling the van der Waals gap of 2D materials with intercalants6,7; however, post-growth ...
Wei Fu   +37 more
core   +1 more source

Van Der Waals Materials for Subdiffractional Light Guidance

open access: yesPhotonics, 2022
Photonics is a natural next technological step after an era of electronics. However, the diffraction limit of light poses severe limitations on photonic elements and dictates their size.
Georgy Ermolaev   +5 more
doaj   +1 more source

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