Article
Engineering, Electrical & Electronic
Guangyao Wang, Ying Lu, Liangcheng Duan, Jianquan Yao
Summary: The study designed a refractive-index sensor based on photonic crystal fiber (PCF) and surface plasmon resonance (SPR) technology with an ultra-wide detection range. Simulation results showed that the sensor has great potential in the fields of biology, chemistry, environment, and medicine.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
Article
Chemistry, Analytical
Ling-Xin Kong, Meng-Jiao Chi, Cheng Ren, Li-Fa Ni, Zhe Li, Yun-Shan Zhang
Summary: The paper achieves a dual-channel SPR sensor at the end of optical fiber, demonstrating high sensitivity measurements of temperature and humidity through special coating and microcaps on the fiber end facet.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Materials Science, Multidisciplinary
Pei Huang, Yu Yao, Wei Zhong, Ping Gu, Zhendong Yan, Fanxin Liu, Bo Yan, Chaojun Tang, Jing Chen, Mingwei Zhu
Summary: In this study, the classical analogy of double EITs in metallic nanostructures was theoretically investigated. It was found that the double EITs result from the interaction between the localized surface plasmons (LSPs) of the nanostructures and the waveguide modes within a dielectric film. The resonance positions of double EITs can be analytically predicted using waveguide theory and can be adjusted by changing the array period or film thickness. The potential applications of double EITs in refractive index sensing were also discussed.
RESULTS IN PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Jin Qin, Shibin Jiang, Zhanshan Wang, Xinbin Cheng, Baojun Li, Yuzhi Shi, Din Ping Tsai, Ai Qun Liu, Wei Huang, Weiming Zhu
Summary: Metasurfaces are 2D artificial materials that can manipulate light at the subwavelength scale. Compared to traditional micro/nano-optical sensors, Metasurfaces have better performance in label-free sensing and recognition of complex samples, and also have the advantage of high integration.
Article
Materials Science, Multidisciplinary
Denis Sakhno, Eugene Koreshin, Pavel A. Belov
Summary: The study focuses on the dispersion properties of an easy-to-manufacture metamaterial made of connected metallic wires, which supports longitudinal waves across a wide frequency band and exhibits unprecedentedly short wavelengths in comparison to the material's period.
Article
Engineering, Electrical & Electronic
Rodrigo Fiorin, Valmir de Oliveira, Hypolito Jose Kalinowski, Ricardo Canute Kamikawachi, Ilda Abe
Summary: This study introduces an optical fiber micro-channel sensor assisted by Bragg gratings, fabricated through femtosecond laser micromachining. The sensor operates based on intensity demodulation with compensation for fluctuations, featuring blends of different refractive indices infused into the micro-channel. The reflected signal of the sensor grating shows a linear increase correlated to the refractive index of the sample, with an average sensitivity of (92 +/- 2) dBm/RIU.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Fan Yang, Kun Ding, John Brian Pendry
Summary: Surface plasmons at an interface between dielectric and metal regions can be made arbitrarily compact normal to the interface by introducing extreme anisotropy in the material parameters. By using a metamaterial structure comprising a square array of gold cylinders and tuning the filling factor, the desired material parameters can be achieved. However, the study shows that the unit cell dimensions of the metamaterial are the limiting factor in the degree of localisation achieved in simulations.
Article
Materials Science, Multidisciplinary
D. Gonzalez-Hernandez, B. Sanchez-Padilla, D. Gailevicius, S. Chandran Thodika, S. Juodkazis, E. Brasselet, M. Malinauskas
Summary: By studying the effect of laser exposure on materials, adjustable refractive index micro-optical devices can be manufactured with 3D nanolithography. The refractive index of micro-lenses is influenced by material density and morphology, and can be controlled through optimization of exposure. This research opens up possibilities for printing complex 3D shapes with desired refractive properties.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Mohammad-Reza Nickpay, Mohammad Danaie, Ali Shahzadi
Summary: This paper proposes a multi-band metamaterial perfect absorber formed by an array of combined H and U-shaped graphene stripes, and numerically simulates its performance using the finite element method. The simulation results demonstrate that the absorption spectra of the absorber can be adjusted by changing the chemical potential of the graphene layer, and the absorber also shows potential as a refractive index sensor.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Optics
Yunyun Lai, Wenxiu Dong, Jin Hu
Summary: A flexible vortex beam generator based on transformation optics is proposed to convert input plane waves to various output vortex beams. The methodology involves a geometrical approach that redistributes the phase or polarization structures in a disc to a belt using topological equivalence. Different vortex beams can be generated by configuring the incidence angles and polarization directions. Numerical simulations are conducted to verify the feasibility, and the proposed design shows potential for extensive applications.
Article
Engineering, Electrical & Electronic
Rupam Srivastava, Yogendra Kumar Prajapati, Sarika Pal, Santosh Kumar
Summary: This paper proposes a D-shaped photonic crystal fiber sensor based on surface plasmon resonance with a micro-rectangular opening. The sensor has strong coupling between the metal layer and the core-guided mode, allowing for high sensitivity and resolution. The sensor is easy to fabricate and can be used for malaria disease detection.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Maxim Neradovskiy, Herve Tronche, Dmitry Chezganov, Elena Pashnina, Evgeniy Vlasov, Pascal Baldi, Tommaso Lunghi, Vladimir Shur, Florent Doutre, Marc De Micheli
Summary: This paper proposes an alternative technique based on the characterization of the second harmonic generation signature of a nonlinear waveguide, which can be used to study the refractive index profile of waveguides, including the high-order spatial modes, which are important for probing the distribution of waveguides.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Physics, Applied
Xin Zheng, Jingjing Zhang, Yu Luo, Zhengxing Wang, Yi Ren, Tie Jun Cui
Summary: Plasmon antennas can enhance electromagnetic fields at a hotspot, but the challenge lies in increasing radiation efficiency without changing the emitter's radiation behavior.
PHYSICAL REVIEW APPLIED
(2022)
Article
Materials Science, Ceramics
K. A. Aly
Summary: Both equations have dimensionality issues and are incorrect, so they should not be used further.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Hyeonil Kim, Hyeonuk Yeo, Heung Cho Ko, Nam-Ho You
Summary: A series of aromatic polybenzoxazoles (PBOs) containing sulfur atoms in their main chains have been developed, showing high thermal stability and decomposition temperature. One of the PBOs exhibits an extremely high refractive index due to its high sulfur content.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yantao Pang, Anoop Thomas, Kalaivanan Nagarajan, Robrecht M. A. Vergauwe, Kripa Joseph, Bianca Patrahau, Kuidong Wang, Cyriaque Genet, Thomas W. Ebbesen
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Optics
A. Manolis, E. Chatzianagnostou, G. Dabos, D. Ketzaki, B. Chmielak, A. L. Giesecke, C. Porschatis, P. J. Cegielski, S. Suckow, L. Markey, J-C Weeber, A. Dereux, S. Schrittwieser, R. Heer, N. Pleros, D. Tsiokos
Article
Chemistry, Multidisciplinary
Kalaivanan Nagarajan, Jino George, Anoop Thomas, Eloise Devaux, Thibault Chervy, Stefano Azzini, Kripa Joseph, Abdelaziz Jouaiti, Mir W. Hosseini, Anil Kumar, Cyriaque Genet, Nicola Bartolo, Cristiano Ciuti, Thomas W. Ebbesen
Article
Chemistry, Multidisciplinary
Abhijit Sau, Kalaivanan Nagarajan, Bianca Patrahau, Lucas Lethuillier-Karl, Robrecht M. A. Vergauwe, Anoop Thomas, Joseph Moran, Cyriaque Genet, Thomas W. Ebbesen
Summary: Vibrational strong coupling (VSC) has been shown to influence the rate and chemoselectivity of chemical reactions, with observations suggesting that symmetry considerations can be used to control chemical selectivity under VSC. In the case of pericyclic reactions, VSC affects the stereoselectivity of reactions, with changes in rate and thermodynamics depending on the coupled vibrational mode. These results confirm the key role of symmetry in chemistry under VSC.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Multidisciplinary Sciences
Kuidong Wang, Marcus Seidel, Kalaivanan Nagarajan, Thibault Chervy, Cyriaque Genet, Thomas Ebbesen
Summary: By strongly coupling the exciton of cyanine dye J-aggregates to an optical mode of a Fabry-Perot (FP) cavity, a significant enhancement of the complex nonlinear refractive index and ultrafast response can be achieved. This work paves the way for exploring strong coupling effects on various third-order nonlinear optical phenomena and for technological applications.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Anoop Thomas, Eloise Devaux, Kalaivanan Nagarajan, Guillaume Rogez, Marcus Seidel, Fanny Richard, Cyriaque Genet, Marc Drillon, Thomas W. Ebbesen
Summary: Research over the past decade has shown that Light-Matter strong coupling in the vacuum limit can enhance material properties, and this study demonstrates a 700-fold enhancement of ferromagnetism in YBa2Cu3O7-x nanoparticles at room temperature through strong coupling. The high magnetic moment value competing with superconductivity at low temperatures suggests that strong coupling could be a new tool for the development of next-generation magnetic and spintronic nanodevices.
Article
Physics, Multidisciplinary
Cyriaque Genet, Jerome Faist, Thomas W. Ebbesen
Summary: Even in the absence of light, coupling cavities with molecules and materials can alter their chemical reactivity, conductivity, and other properties.
Article
Physics, Multidisciplinary
Minghao Li, Oussama Sentissi, Stefano Azzini, Cyriaque Genet
Summary: This experiment studies the impact of inertial reference frame changes on overdamped Brownian motion, and analyses the consequences of Galilean transformations on Brownian diffusion and energetics. The results confirm the weak Galilean invariance of Brownian dynamics, derive a Galilean invariant expression of the stochastic thermodynamic first law, and discuss a potential ambiguity of Galilean relativistic features in diffusive systems.
NEW JOURNAL OF PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Kuidong Wang, Minghao Li, Hui-Hsin Hsiao, Fengling Zhang, Marcus Seidel, Ai-Yin Liu, Jie Chen, Eloise Devaux, Cyriaque Genet, Thomas Ebbesen
Summary: The study demonstrates a large, ultrafast anisotropic modulation of light using the anisotropic nonlinear response of indium tin oxide and plasmonic nanoantennas. A polarization elliptic rotation and phase delay between the oscillations of linear polarization axes are achieved, showing promise for implementing all-optical high-speed polarization modulators and retarders.
Article
Chemistry, Multidisciplinary
Kuidong Wang, Ai-Yin Liu, Hui-Hsin Hsiao, Cyriaque Genet, Thomas Ebbesen
Summary: This study investigates a strong coupling between Mie resonant modes of high-index dielectric nanocavities and an epsilon-near-zero mode of an ultrathin indium tin oxide film. The anticrossing splitting of 220 meV is observed, and static nonlinear optical measurements reveal a large enhancement in the intensity-independent effective optical nonlinear coefficients at the coupled resonance. A transient response of about 300 fs is also observed. These ultrafast and large optical nonlinear coefficients offer a new route for strong coupling-assisted high-speed photonics.
Article
Physics, Multidisciplinary
Gabriel Schnoering, Samuel Albert, Antoine Canaguier-Durand, Cyriaque Genet
Summary: The study investigates the dynamics and energetics of overdamped Brownian chiral nanoparticles diffusing in symmetric bistable optical potentials, created by controlling the polarizations of two counterpropagating Gaussian beams. The chiral densities and fluxes in the optical environment exert reactive or dissipative chiral forces on the nanoparticles, leading to modifications in the thermal activation process depending on enantiomer type and optical field enantiomorphism. This optomechanical chiral coupling results in changes to the Helmholtz free energy and asymmetric barrier-crossing rates, unveiling new opportunities for chiral sensing and discrimination at the nanoscale.
Article
Physics, Multidisciplinary
Remi Goerlich, Giovanni Manfredi, Paul-Antoine Hervieux, Laurent Mertz, Cyriaque Genet
Summary: The method proposed in this paper constructs a classical analog of an open quantum system by using the distribution of classical positions in potential wells to reconstruct the quantum Bohm potential, resulting in classical particles experiencing an effective quantum force. This protocol was tested with numerical simulations and experimentally implemented using optically trapped micron-sized dielectric beads for harmonic confinement, demonstrating typical quantum effects such as long-lasting correlations and quantum tunneling.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
M. Balasubrahmaniyam, Cyriaque Genet, Tal Schwartz
Summary: We reveal a transition within the strong coupling regime and below the crossover to ultrastrong coupling, which alters the coupling mechanism in multimode cavities. This transition drastically modifies the Hamiltonian describing the polaritons, such that different cavity modes are either entangled via the material or completely decoupled.
Article
Physics, Fluids & Plasmas
Remi Goerlich, Minghao Li, Samuel Albert, Giovanni Manfredi, Paul-Antoine Hervieux, Cyriaque Genet
Summary: The study characterizes the noise driving Brownian motion of a trapped microsphere across the optical trap's spectral range. By comparing experimental, analytical, and simulated data, it carefully analyzes noise and ergodic properties. The research provides important insights for utilizing optical traps in metrology, covering different diffusion regimes and the transition between them.
Proceedings Paper
Engineering, Electrical & Electronic
E. Chatzianagnostou, A. Manolis, G. Dabos, D. Ketzaki, B. Chmielak, A. L. Giesecke, C. Porschatis, P. J. Cegielski, S. Suckow, L. Markey, J. C. Weeber, A. Dereux, S. Schrittwieser, R. Heer, N. Pleros, D. Tsiokos
2020 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2020)
