Results 101 to 110 of about 13,320 (259)

All-angle negative refraction of highly squeezed plasmon and phonon polaritons in graphene-boron nitride heterostructures

, 2017
A fundamental building block for nanophotonics is the ability to achieve negative refraction of polaritons, because this could enable the demonstration of many unique nanoscale applications such as deep-subwavelength imaging, superlens, and novel guiding.
Chen, Hongsheng, Joannopoulos, John D., Kaminer, Ido, Lin, Xiao, Lopez, Josue J., Rivera, Nicholas, Shen, Yichen, Soljacic, Marin, Yang, Yi, Zhang, Baile   +9 more
core   +1 more source

Dielectric loaded graphene plasmon waveguide

Optics Express, 2015
Dielectric loaded graphene plasmon waveguide (DLGPW) is proposed and investigated. An analytical model based on effective-index method is presented and verified by the finite element method simulations. The mode effective index, propagation loss, cutoff wavelength of higher order modes and single-mode operation region were derived at mid-infrared ...
W, Xu, Z H, Zhu, K, Liu, J F, Zhang, X D, Yuan, Q S, Lu, S Q, Qin   +6 more
openaire   +2 more sources

Local Plasmon Engineering in Doped Graphene [PDF]

ACS Nano, 2018
Single atom B or N substitutional doping in single-layer suspended graphene, realised by low energy ion implantation, is shown to induce a dampening or enhancement of the characteristic interband Ï plasmon of graphene through a high-resolution electron energy loss spectroscopy study in the scanning transmission electron microscope.
Fredrik Sydow Hage, Trevor P. Hardcastle, Morten N. Gjerding, Demie M. Kepaptsoglou, Che R. Seabourne, Kirsten T. Winther, Recep Zan, Julian Alexander Amani, Hans C. Hofsaess, Ursel Bangert, Kristian S. Thygesen, Quentin M. Ramasse   +11 more
openaire   +6 more sources

Enhanced Trapping with an Optimized Graphene‐Based Bowtie Plasmonic Nanotweezer: Design, Analysis, and Bioanalytical Applications

Advanced Photonics Research, EarlyView.
A graphene‐based bowtie plasmonic nanotweezer is designed and optimized using particle swarm optimization and transfer matrix analysis. The structure achieves strong field confinement, delivering trapping forces up to 6 nN W−1 for 10 nm bioparticles with sixfold lower power requirements than conventional designs.
Saba Ebrahimpanah, Mohammad Hazhir Mozaffari, Ali Farmani   +2 more
wiley   +1 more source

Electrically defined topological interface states of graphene surface plasmons based on a gate-tunable quantum Bragg grating

Nanophotonics, 2019
A periodic metagate is designed on top of a boron nitride-graphene heterostructure to modulate the local carrier density distribution on the monolayer graphene.
Fan Zhiyuan, Dutta-Gupta Shourya, Gladstone Ran, Trendafilov Simeon, Bosch Melissa, Jung Minwoo, Iyer Ganjigunte R. Swathi, Giles Alexander J., Shcherbakov Maxim, Feigelson Boris, Caldwell Joshua D., Allen Monica, Allen Jeffery, Shvets Gennady   +13 more
doaj   +1 more source

High-Performance Transmission of Surface Plasmons in Graphene-Covered Nanowire Pairs with Substrate

Nanomaterials, 2019
Graphene was recently proposed as a promising alternative to support surface plasmons with superior performances in the mid-infrared range. Here, we theoretically show that high-performance and low-loss transmission of graphene plasmons can be achieved ...
Da Teng, Kai Wang, Qiongsha Huan, Yongzhe Zhao, Yanan Tang   +4 more
doaj   +1 more source

Tunable bound states in the continuum in active metasurfaces of graphene disk dimers

Nanophotonics, 2023
Bound states in the continuum (BICs) in metasurfaces have lately attracted a great deal of attention stemming from their inherent (formally) divergent Q factors, which lead to an enhancement of light–matter interaction in two-dimensional geometries ...
Pura Jose Luis, Deop-Ruano Juan R., Abujetas Diego R., Giannini Vincenzo, Manjavacas Alejandro, Sánchez-Gil José A.   +5 more
doaj   +1 more source

Flexible transformation plasmonics using graphene

Optics Express, 2013
The flexible control of surface plasmon polaritons (SPPs) is important and intriguing due to its wide application in novel plasmonic devices. Transformation optics (TO) offers the capability either to confine the SPP propagation on rigid curved/uneven surfaces, or to control the flow of SPPs on planar surfaces.
Wei Bing, Lu, Wei, Zhu, Hong Ju, Xu, Zhen Hua, Ni, Zheng Gao, Dong, Tie Jun, Cui   +5 more
openaire   +2 more sources

Tunable UV-Emitters through Graphene Plasmonics [PDF]

Nano Letters, 2017
Control over the spontaneous emission of light through tailored optical environments remains a fundamental paradigm in nanophotonics. The use of highly-confined plasmons in materials such as graphene provides a promising platform to enhance transition rates in the IR-THz by many orders of magnitude. However, such enhancements involve near-field plasmon
Jamison Sloan, Nicholas Rivera, Marin Soljačić, Ido Kaminer   +3 more
openaire   +3 more sources

Nanophotonic Strategies for Chiral Biosensing: Nanoparticles, Metasurfaces, Magneto‐Optical, and Quantum Approaches

Advanced Photonics Research, EarlyView.
Recent advances in nanophotonics‐based chiral biosensing approaches are comprehensively reviewed, highlighting key trends, advantages, and limitations of each technology. Special attention is given to emerging strategies that exploit magneto‐optical and quantum plasmonic phenomena to enhance sensitivity down to the level of a few molecules, or even a ...
Jorge Ricardo Mejía‐Salazar
wiley   +1 more source