Article
Chemistry, Physical
Artur Movsesyan, Alina Muravitskaya, Marion Castilla, Sergei Kostcheev, Julien Proust, Jerome Plain, Anne-Laure Baudrion, Remi Vincent, Pierre-Michel Adam
Summary: In this study, the substrate-induced hybridization of plasmonic modes of a silver nanocylinder was experimentally and numerically investigated. The applications of plasmonic nanoparticles rely on their mode spectral position and near-field distribution, but introducing them into a sensing system can result in changes in mode nature and hybridization or dehybridization effects.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Optics
Bhupesh Kumar, Ran Homri, Priyanka, Santosh K. Maurya, Melanie Lebental, Patrick Sebbah
Summary: In sufficiently strong scattering media, light transport is suppressed and modes are exponentially localized.We demonstrate that all lasing modes are spatially localized by undoing gain competition and cross-saturation, and selectively exciting the modes.By efficiently suppressing the spatial hole burning effect, we can turn on the optimally outcoupled random lasing modes.
Article
Chemistry, Multidisciplinary
Maximilian Ochs, Luka Zurak, Enno Krauss, Jessica Meier, Monika Emmerling, Rene Kullock, Bert Hecht
Summary: This study demonstrates the selective electrical excitation of symmetric and antisymmetric plasmonic modes in a two-wire transmission line. Mode selectivity is achieved by precisely positioning nanoscale excitation sources. The resulting device represents the smallest electrically driven light source with directly switchable polarization states.
Article
Optics
Xiao Xiong, Daniel Clarke, Yiming Lai, Ping Bai, Ching Eng Png, Lin Wu, Ortwin Hess
Summary: Plasmonic nanocavities are a promising platform for various applications such as spectroscopy, sensing, and photonic quantum information processing. To maximize their potential, it is important to continually innovate in cavity design and develop robust strategies for engineering plasmonic mode characteristics, to optimize spatial and spectral matching conditions for strong light-matter interaction.
Article
Chemistry, Multidisciplinary
Van Doan Le, Yaya Lefkir, Nathalie Destouches
Summary: Laser-induced self-organized plasmonic metasurfaces exhibit hybridized plasmonic and photonic modes. Even with the irregularities in nanoparticle size distribution and positional disorder, the resulting nanostructures show strong coupling between plasmonic and photonic modes. Controlling the statistical properties of plasmonic metasurfaces allows for reproducible control of hybridization mechanisms and their optical properties.
Article
Chemistry, Multidisciplinary
Javier Rodriguez-Alvarez, Amilcar Labarta, Juan Carlos Idrobo, Rossana Dell'Anna, Alessandro Cian, Damiano Giubertoni, Xavier Borrise, Albert Guerrero, Francesc Perez-Murano, Arantxa Fraile Rodriguez, Xavier Batlle
Summary: In this study, dark and bright modes in an inverted plasmonic honeycomb lattice in the visible and near-infrared energy regime were investigated. The lattice was made of slits carved in a gold thin film and showed hotspots and a set of bright and dark modes. The plasmonic resonances were found to occur within the 0.5-2 eV energy range, suggesting their potential for synergistic coupling with excitons in two-dimensional transition metal dichalcogenides materials or for designing nanoscale sensing platforms based on near-field enhancement over a metallic surface.
Article
Optics
Danielle Ben-Haim, Tal Ellenbogen
Summary: The emergence of optical anomalies in 3D plasmonic metamaterials upon excitation of volume collective modes is studied. Two types of volume collective modes are introduced: a reflective mode resilient to plasmonic absorption, which exhibits high reflection with extremely low loss; and a transmissive mode that supports the emergence of lattice matched scattered waves within the volume, leading to full transmission through a spectral transparency window. These attractive optical properties of the volume collective modes may lead to a breakthrough in the design of low-loss and efficient 3D plasmonic metamaterials for novel linear and nonlinear photonic applications.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Landobasa Y. M. Tobing, Alana M. Soehartono, Aaron D. Mueller, Ken-Tye Yong, Weijun Fan, Dao Hua Zhang
Summary: Engineering the spectral lineshape of plasmonic modes through various electromagnetic couplings and mode interferences can significantly improve plasmonic sensing. A new approach is proposed to overcome the trade-off between bulk and surface sensitivities by combining near-field and far-field coupling in an intercalated 3-disk plasmonic crystal, achieving higher figure of merit and surface sensitivity. The design simplicity and high figure of merit highlight the potential of the 3-disk structure for a robust plasmonic sensing platform.
Article
Chemistry, Multidisciplinary
Wenyu Zhao, Hongyuan Li, Xiao Xiao, Yue Jiang, Kenji Watanabe, Takashi Taniguchi, Alex Zettl, Feng Wang
Summary: Graphene nanoribbons with low edge roughness fabricated using dry lithography method support low-loss and tunable plasmonic waveguide modes, which were observed using cryogenic infrared nanoscopy and can be adjusted through electrostatic gating.
Article
Nanoscience & Nanotechnology
Eric Sidney Aaron Goerlitzer, Mario Zapata-Herrera, Ekaterina Ponomareva, Deborah Feller, Aitzol Garcia-Etxarri, Matthias Karg, Javier Aizpurua, Nicolas Vogel
Summary: Molecular chirality is transferred to plasmonic lattice modes, providing a effective and tunable means to control chirality. Non-close packed, periodic arrays of achiral gold nanoparticles embedded in a polymer film are used to demonstrate this chirality transfer. The surface lattice resonances become optically active in the presence of chiral molecules, showing handedness-dependent excitation. Numerical simulations and a semi-analytical model rationalize this chirality transfer.
Article
Chemistry, Physical
Pengwei Li, Hongfang Wang, Zulhumar Turup, Xiaoyu Yang, Jingyu Wang, Min Gao
Summary: Efficiently manipulating plasmonic modes by adjusting geometry, spatial arrangement, and the nature of the material has shown great potential in ultrasensitive sensing, optical modulation, and surface-enhanced spectroscopy. Symmetry breaking as an effective geometry-controlled method can induce plasmonic hybridization and further tune resonant wavelength, strength, and electromagnetic fields. Theoretical design of a symmetry-breaking Ag nano-cube with an introduced cavity along the lateral edges allows for arbitrary tuning of plasmonic modes based on plasmon hybridization theory. This research provides insight into the mechanism of light-matter interactions and paves the way for efficient nanophotonic platforms in plasmon-enhanced spectroscopy and optical wave manipulations.
APPLIED SURFACE SCIENCE
(2023)
Article
Optics
Jiawei Sun, Huatian Hu, Yuhao Xu, Yang Li, Hongxing Xu
Summary: In this study, the in-situ optical tuning of the nanocavity mode in the nanocube-on-mirror nanocavities was achieved by continuous laser irradiation. Through photothermal-assisted morphology changes, the plasmon resonances were shifted by deforming the surfactant covering the silver nanocube and reshaping the nanocube curvature. It was found that the alumina-encapsulated nanocube-on-mirrors constructed by surfactant-eliminated nanocubes were capable of enduring more intense irradiation. Furthermore, the factors affecting the plasmonic heating effect were systematically investigated.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
S. F. Haddawi, N. Roostaei, S. M. Hamidi
Summary: This study demonstrates a flexible random laser based on a two-face double grating plasmonic structure made of PDMS. The experimental results confirm that thinner double grating structures can achieve higher efficiency in random lasing properties under certain conditions.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Zhen Qiao, Hongmei Xu, Na Zhang, Xuerui Gong, Chaoyang Gong, Guang Yang, Sing Yian Chew, Changjin Huang, Yu-Cheng Chen
Summary: This study reveals the key mechanism governing the frequency distributions of transverse modes in cellular lasers and interprets spatial information of cells through spectral information of transverse modes using hyperspectral imaging. Experimental investigations into the spectral characteristics of transverse modes in live and fixed cells with different morphological features are conducted, and the proposed concept is applied for studying cell adhesion and classification.
Article
Multidisciplinary Sciences
Rahmat Hidayat, Jalu Setiya Pradana, Alvin Fariz, Susi Komalasari, Siti Chalimah, Herman Bahar
Summary: Rectangular wave-shaped surface-relief plasmonic gratings (RSR-PGs) were fabricated using a nanoimprint photocuring lithography technique and metallization with gold nanolayer. Reflectance spectral dip was observed in the visible light region when a one-dimensional plasmonic grating with a periodicity of approximately 700 nm was formed. The dip was associated with surface plasmon resonance (SPR) wave excitation and was consistent with the simulation results using the rigorous coupled wave analysis (RCWA) method. The RSR-PGs exhibited richer plasmon characteristics compared to sine wave-shaped plasmonic gratings.
SCIENTIFIC REPORTS
(2023)
