Article
Optics
Ibrahim Issah, Jesse Pietila, Tommi Kujala, Matias Koivurova, Humeyra Caglayan, Marco Ornigotti
Summary: This work proposes epsilon-near-zero (ENZ) nanoparticles composed of metal and dielectric bilayers, and uses the effective-medium approach to study their optical response. By varying the radii of the bilayer nanospheres, a passive tunable ENZ region ranging from visible to near IR is obtained. Additionally, the absorption and scattering cross section of ENZ nanoparticles are presented using open-source transfer-matrix-based software (STRATIFY). The proposed ENZ nanoparticle is expected to be experimentally realized using chemical synthesis techniques.
Article
Materials Science, Multidisciplinary
Junxiang Xiang, Yunxia Wang, Yupeng Wu, Qi Peng, Langquan Shui, Wengen Ouyang, Tao Ding, Ze Liu
Summary: A cost-effective approach for fabricating highly ordered metallic pillar arrays in centimeter scale has been developed using superplastic nanomolding and anodic aluminum oxide templates. This method enables surface-enhanced Raman scattering with an enhancement factor of approximately 10^6 and provides guidance for quantitative analysis on the sub-micrometer scale.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Analytical
Ekaterina Babich, Sergey Scherbak, Ekaterina Lubyankina, Valentina Zhurikhina, Andrey Lipovskii
Summary: This paper considers the problem of optimizing the topology of metal structures for Surface Enhanced Raman Scattering (SERS) sensing. A model is developed to randomly distribute hemispheroidal particles on a glass substrate and estimate the SERS capabilities of the resulting structures. Power Spectral Density (PSD) analysis is applied to both simulated structures and atomic force microscope images, and compared with measured SERS signals to identify and select a structure topology that can provide maximum enhancement of Raman signal.
Article
Chemistry, Physical
Yunrui Han, Yingkuan Han, Qihang He, Hong Liu, Yu Zhang, Lin Han
Summary: This study successfully fabricated an AgNPs@ LIG SERS chip with excellent sensitivity and uniformity, which realized large-scale production with controllable shape and area. The chip features a limit of detection (LOD) of 10-14 M, an enhancement factor (EF) of 3 x 1010, and fine uniformity. Furthermore, the chip was applied to the detection of melamine and showed potential application value for pollutant analysis. The preparation of the composite SERS chip is simple for mass production, providing great potential for the development of ultrasensitive SERS biosensors for various biological and chemical analyses.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Jamal Aziz, Naila Nasir, Ehsan Elahi, Awais Ali, Shahid Mehmood, Honggyun Kim, Deok-kee Kim, Arshad Saleem Bhatti
Summary: Metal/semiconductor nanocomposites have the potential to tune the optical and electrical properties of semiconductors at the nanometer scale. The resonant excitation of surface plasmons of metal nanoparticles can couple with semiconductors and tune their optical emissions. This study thoroughly examines the coupling of surface plasmons and excitons using temperature dependent photoluminescence and Raman spectroscopy in Au-NPs coated ZnO nanowires. The results demonstrate the potential applications of Au/ZnO composites in plasmonic based nanoelectronics for memory and neuromorphic applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Cheng Wang, Pin-Jie Chen, Chun-Hway Hsueh
Summary: In this study, an Au-Cu-Si activation layer was successfully used as a substitute for the commonly used gold layer in propagating surface plasmon resonance sensors. The results showed that Au-based TFMG is feasible and has advantages of lower cost and better performance.
Article
Chemistry, Physical
Atsuko Jimbo, Kohei Imura
Summary: In this study, the nonlinear photoluminescence from gold nanoparticle films was investigated using scanning near-field optical microscopy. The spatial and spectral distributions of the photoluminescence active sites beyond the diffraction limit of light were visualized. The results show that photoluminescence originates from at least two spectral components, one attributed to electron-hole recombination and the other ascribed to the radiative decay of plasmons.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Review
Chemistry, Multidisciplinary
Nguyen Hoang Ly, Sang Jun Son, Soonmin Jang, Cheolmin Lee, Jung Il Lee, Sang-Woo Joo
Summary: Facile detection of indoor semi-volatile organic compounds (SVOCs) is a critical issue for researchers, with plasmonic nanomaterial platforms offering significant Raman signal enhancements for the ultra-sensitive detection of SVOC molecules. Novel aptasensors-assisted SERS technology is introduced for selective sensing, demonstrating the potential for indoor SVOC detection.
Article
Chemistry, Physical
Wei Zhang, Tianxing Zheng, Bin Ai, Panpan Gu, Yuduo Guan, Yu Wang, Zhiyuan Zhao, Gang Zhang
Summary: Au-P-Au-coupled gold nanoparticle platforms with multiple nanogaps were fabricated using nanoskiving and polymer-assisted assembly. The platform showed strong electric field enhancement due to the confinement of incident light, leading to significant surface-enhanced Raman scattering performance and sensitive detection of glucose.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Ankai Wang, Shengli Zou
Summary: The research found that near the surface of nanoparticles, the enhancement factor of the radiative decay rate of multiple emitters can be significantly smaller than that of one emitter, and has an asymmetric line shape. The real and imaginary parts of the index of refraction of nanoparticles are critical for the enhancement factor of six emitters, and asymmetric line shape appears when the real part is less than that of the environmental medium.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Analytical
Muhammad Shafi, Pengyi Duan, Wenying Liu, Wenjie Zhang, Can Zhang, Xiaoxuan Hu, Cong Liu, Sartaj Wali, Shouzhen Jiang, Chao Zhang, Baoyuan Man, Mei Liu
Summary: This article introduces a new recyclable SERS substrate, which includes Ag-decorated ZnSe nanowires and hyperbolic metamaterial. The Ag-decorated ZnSe nanowires work as an external coupling structure for hyperbolic metamaterials, exhibiting significant plasmonic effects and unique optical features. The self-cleaning feature of the nanostructure is demonstrated through photocatalytic degradation of R6G and MG molecules.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Multidisciplinary
Haomin Guan, Zheng Tian, Qinghong Kong, Guangcheng Xi
Summary: By synthesizing rough VO2(D) nanostars and nanospheres with highly dense and rough surfaces, highly sensitive Raman spectrum substrates can be prepared with a detection limit as low as 10^(-9) M for Rhodamine 6G.
CHEMICAL COMMUNICATIONS
(2021)
Article
Optics
Xiaofeng Xu, Xiao-Qing Luo, Jingzhao Zhang, Weihua Zhu, Zhiyong Chen, Tie-Fu Li, W. M. Liu, Xin-Lin Wang
Summary: This study investigates the application of near-infrared plasmonic DFRs in a hybrid metasurface through numerical and theoretical approaches. The research demonstrates that plasmonic sensing can be achieved by modulating the polarization orientation and geometric parameters of the unit cells, resulting in resonance mode-broadening and mode-shifting. Additionally, the study shows the realization of a high ON/OFF ratio plasmonic switch and digital metasurface with plasmonic DFRs. These findings are significant for polarization-sensitive optical sensing, passive optical switches, and programmable metasurface devices.
Article
Chemistry, Multidisciplinary
Haoran Wu, Qiong Yang, Jingjing Wang, Huayu Zhou, Shaoxiong Qin, Jiaqi Pan, Chaorong Li
Summary: This paper used an electrochemical anodic oxidation method to prepare rough copper oxide with nanostructured morphology on the surface of a copper sheet, and studied the effects of different reaction conditions on the morphology and crystallization of CuO. The CuO nanosheet array thin film was optimized by regulating the reaction time and current density to obtain highly sensitive SERS detection, and showed good photocatalytic degradation performance of an organic dye under visible light irradiation.
NEW JOURNAL OF CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Hiro Minamimoto, Ruifeng Zhou, Tomohiro Fukushima, Kei Murakoshi
Summary: In this paper, phenomena of unique electronic excitations were reviewed from the perspective of surface-enhanced Raman scattering (SERS) spectroscopy at electrified interfaces. The detailed investigations of the well-defined system provided information on the electronic excitation processes. The paper explored novel ways for further precise tuning of light-matter interactions.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Astronomy & Astrophysics
Xian Shi, Julie Castillo-Rogez, Henry Hsieh, Hejiu Hui, Wing-Huen Ip, Hanlun Lei, Jian-Yang Li, Federico Tosi, Liyong Zhou, Jessica Agarwal, Antonella Barucci, Pierre Beck, Adriano Campo Bagatin, Fabrizio Capaccioni, Andrew J. Coates, Gabriele Cremonese, Rene Duffard, Manuel Grande, Ralf Jaumann, Geraint H. Jones, Esa Kallio, Yangting Lin, Olivier Mousis, Andreas Nathues, Jurgen Oberst, Holger Sierks, Stephan Ulamec, Mingyuan Wang
Summary: The aim of Project GAUSS is to return samples from the dwarf planet Ceres to study its origins, internal structure, evolution history, astrobiological implications, and mineralogical connections with carbonaceous meteorites.
EXPERIMENTAL ASTRONOMY
(2022)
Article
Optics
Jingshi Yan, Qingdong Ou, Maria Antonietta Vincenti, Costantino De Angelis, Qiaoliang Bao, Dragomir N. Neshev
Summary: In this study, the non-linear optical properties of PbI2 nanosheets were investigated using nonlinear microscopy. The researchers found that the nonlinearity enhancement of the nanosheets depends on excitonic resonances, crystalline orientation, thickness, and the influence of the substrate. These findings open up new opportunities for the use of PbI2 nanosheets as nonlinear and quantum light sources.
Article
Multidisciplinary Sciences
Junliang Dong, Alessandro Tomasino, Giacomo Balistreri, Pei You, Anton Vorobiov, Etienne Charette, Boris Le Drogoff, Mohamed Chaker, Aycan Yurtsever, Salvatore Stivala, Maria A. Vincenti, Costantino De Angelis, Detlef Kip, Jose Azana, Roberto Morandotti
Summary: The authors propose a new approach for independent processing of multiplexed signals in terahertz waveguides by engineering the metal surface of a four-wire waveguide.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
M. A. Vincenti, J. Gao, D. de Ceglia, J. A. Frantz, M. Scalora, N. M. Litchinitser
Summary: By appropriately designing a chalcogenide metasurface, we have demonstrated enhanced harmonic generation in the UV range, a regime that was previously believed to be inaccessible due to absorption. This enhancement is achieved through a combination of photonic band structure, phase-locking, nonlinear dispersion, and improved field localization, resulting in a two orders of magnitude improvement in third harmonic conversion efficiency compared to the single layer counterpart, despite tuning the harmonic signal deep in the absorption range at 285 nm.
NEW JOURNAL OF PHYSICS
(2022)
Review
Astronomy & Astrophysics
Marco Pinto, Beatriz Sanchez-Cano, Richard Moissl, Johannes Benkhoff, Carlota Cardoso, Patricia Goncalves, Pedro Assis, Rami Vainio, Philipp Oleynik, Arto Lehtolainen, Manuel Grande, Arlindo Marques
Summary: This paper presents the scientific objectives, instrument design, and calibration of the BepiColombo Environment Radiation Monitor (BERM) on board the European Space Agency's Mercury Planetary Orbiter (MPO), as well as its scientific performance and initial results. The future plans and synergies with other instruments on the BepiColombo and other missions are also discussed.
SPACE SCIENCE REVIEWS
(2022)
Article
Information Science & Library Science
Amy Hammock, Gabriella Pandolfelli, Tonya Samuel, Pascale Fils-Aime, Madison Grande, Matthew D'Ambrosion, Mickayla Murphy, Simran Kaur, Janine Logan, Rachel Feuerstein-Simon, Carolyn Cannuscio, Lisa Benz Scott
Summary: Existing research has shown that public libraries are used by community members to improve health and wellbeing, but little is known about the health and social needs of patrons in suburban public libraries. In this study, interviews with 95 staff from 32 suburban public libraries were conducted to understand the perceived needs of their patrons. The top needs identified were mental health, exercise, diet/nutrition, technology literacy, housing, and employment. Despite not having formal training, library staff described responding to patrons' intersecting health and social needs. Engaging social workers, public health educators, and healthcare professionals in the public library space could help address these needs using evidence-based tools and best practices.
LIBRARY & INFORMATION SCIENCE RESEARCH
(2023)
Article
Optics
Domenico de Ceglia, Marco Gandolfi, Maria Antonietta Vincenti, Andrea Tognazzi, Paolo Franceschini, Alfonso C. Cino, Gina Ambrosio, Camilla Baratto, Bohan Li, Rocio Camacho-Morales, Dragmoir N. Neshev, Costantino De Angelis
Summary: We investigate transient, photo-thermally induced meta-surface effects in a planar thin-film multilayer based on a phase-transition material. Illumination with obliquely incident, phase-coherent pulsed pumps induces a reversible temperature pattern in the phase-transition layer, leading to a transient Fano-like spectral feature. The study suggests new opportunities for dynamic control of the quality factor in photonic resonances and for light modulation and switching.
Article
Physics, Applied
Boqing Liu, Tanju Yildirim, Elena Blundo, Domenico de Ceglia, Ahmed Raza Khan, Zongyou Yin, Hieu T. Nguyen, Giorgio Pettinari, Marco Felici, Antonio Polimeni, Yuerui Lu
Summary: In this study, large pressurized monolayer TMD domes were fabricated using proton irradiation, and their SHG performance was comprehensively investigated. The results showed that the intensity of SHG was effectively enhanced by around two orders of magnitude at room temperature. This giant enhancement was attributed to the distinct separation distance induced by capped pressurized gas and the hemi-spherical morphology, which enabled constructive optical interference. Moreover, the unique divergent strain field in TMD domes promoted the first experimental study on the anisotropic nonlinear optical behavior based on biaxial strain conditions.
APPLIED PHYSICS REVIEWS
(2023)
Article
Optics
S. Mukhopadhyay, L. Rodriguez-Sune, C. Cojocaru, M. A. Vincenti, K. Hallman, G. Leo, M. Belchovski, D. de Ceglia, M. Scalora, J. Trull
Summary: We report experimental observations and numerical simulations of second and third harmonic generation from a gold nanograting, which exhibits a plasmonic resonance in the near infrared. The resonance is tunable, with a spectral position that depends on the angle of incidence. The enhancement of nonlinear optical processes produced by the field localization in the nanograting when compared with a flat gold mirror manifests itself dramatically from the ultraviolet to the visible range, suggesting potential applications in nonlinear optics of metals at the nanoscale.
Article
Materials Science, Multidisciplinary
Luca Fagiani, Luca Bolzonello, Johann Osmond, Domenico de Ceglia, Niek van Hulst, Monica Bollani, Maria Antonietta Vincenti
Summary: This study presents a silicon-based nanostructure that can control light polarization with high precision and compact size. By leveraging the properties of quasi-bound states in the continuum, the proposed meta-polarizer converts arbitrarily polarized incoming light into linearly polarized light without the use of local phase tuning mechanisms. The experimental results demonstrate its effectiveness in compensating unwanted birefringence in optical fibers and controlling polarization in complex media environments.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
C. Baratto, M. Gandolfi, A. Tognazzi, P. Franceschini, G. Ambrosio, B. Li, R. Camacho Morales, D. de Ceglia, A. C. Cino, D. N. Neshev, C. De Angelis
Summary: An infrared optical limiting sensor has been developed for laser protection. The sensor uses metallic and dielectric photonic resonators with phase-change materials, optimized deposition by RF magnetron sputtering, and silver placement between VO2 and the substrate to improve performance. The optimum thickness for VO2 and silver films has been calculated, and characterization and resistance measurements have been performed. The sensor exhibits a transmittance drop of 70% when exposed to a laser pulse excitation.
IEEE SENSORS LETTERS
(2023)
Article
Computer Science, Information Systems
Mohammad Ali Shameli, Antonio-D Capobianco, Luca Schenato, Marco Santagiustina, Domenico De Ceglia
Summary: In this paper, a novel reconfigurable metasurface architecture is proposed and evaluated for wavefront control in millimeter-wave wireless systems. The metasurface, made of engineered silicon bricks covered with a thin film of vanadium dioxide, demonstrates anomalous reflection with 93% efficiency and 15% relative bandwidth at 60 GHz. By applying a thermal stimulus, the metasurface undergoes a phase transition in vanadium dioxide, leading to specular reflection. This device allows dynamic control of millimeter waves, making it suitable for various applications in 5G and 6G systems.
Article
Computer Science, Information Systems
Mohammad Ali Shameli, Mirko Magarotto, Antonio-D Capobianco, Luca Schenato, Marco Santagiustina, Domenico De Ceglia
Summary: A novel architecture of reconfigurable, flat metalens with electrically tunable focal length is proposed for wireless communication systems operating at millimeter wave frequencies. The metalens is made of reflective silicon bricks distributed on a grounded multilayer with phase-transition material films, allowing for different focal lengths. Numerical investigation shows that the metalens can reversibly tune focal length at specific distances and remains tunable within a certain frequency range. This has significant importance for dynamically controlling the focal point of millimeter waves in wireless communications.
Article
Multidisciplinary Sciences
S. Orsini, A. Milillo, H. Lichtenegger, A. Varsani, S. Barabash, S. Livi, E. De Angelis, T. Alberti, G. Laky, H. Nilsson, M. Phillips, A. Aronica, E. Kallio, P. Wurz, A. Olivieri, C. Plainaki, J. A. Slavin, I Dandouras, J. M. Raines, J. Benkhoff, J. Zender, J-J Berthelier, M. Dosa, G. C. Ho, R. M. Killen, S. McKenna-Lawlor, K. Torkar, O. Vaisberg, F. Allegrini, I. A. Daglis, C. Dong, C. P. Escoubet, S. Fatemi, M. Franz, S. Ivanovski, N. Krupp, H. Lammer, Francois Leblanc, V Mangano, A. Mura, R. Rispoli, M. Sarantos, H. T. Smith, M. Wieser, F. Camozzi, A. M. Di Lellis, G. Fremuth, F. Giner, R. Gurnee, J. Hayes, H. Jeszenszky, B. Trantham, J. Balaz, W. Baumjohann, M. Cantatore, D. Delcourt, M. Delva, M. Desai, H. Fischer, A. Galli, M. Grande, M. Holmstrom, I Horvath, K. C. Hsieh, R. Jarvinen, R. E. Johnson, A. Kazakov, K. Kecskemety, H. Kruger, C. Kurbisch, Frederic Leblanc, M. Leichtfried, E. Mangraviti, S. Massetti, D. Moissenko, M. Moroni, R. Noschese, F. Nuccilli, N. Paschalidis, J. Ryno, K. Seki, A. Shestakov, S. Shuvalov, R. Sordini, F. Stenbeck, J. Svensson, S. Szalai, K. Szego, D. Toublanc, N. Vertolli, R. Wallner, A. Vorburger
Summary: In the observations of the BepiColombo mission, the previously unexplored southern inner magnetosphere of Mercury was discovered, revealing different ion populations and signs of erosion in the magnetosphere. This is crucial for understanding the behavior of Mercury's magnetosphere in such proximity to the Sun.
NATURE COMMUNICATIONS
(2022)
Proceedings Paper
Optics
J. Dong, A. Tomasino, G. Balistreri, P. You, A. Vorobiov, E. Charette, B. Le Drogoff, M. Chaker, A. Yurtsever, S. Stivala, M. A. Vincenti, C. De Angelis, D. Kip, J. Azana, R. Morandotti
Summary: We introduce a new metal-wire waveguide topology called a four-wire waveguide, which serves as both a broadband terahertz polarization-division multiplexer and a novel platform for performing independent manipulation of polarization-division multiplexed terahertz signals.
2022 PHOTONICS NORTH (PN)
(2022)
