Article
Nanoscience & Nanotechnology
Ruoheng Chai, Qi Liu, Wenwei Liu, Zhancheng Li, Hua Cheng, Jianguo Tian, Shuqi Chen
Summary: In this Perspective, recent advancements in planar nanophotonics involving localized resonances, nonlocal modes, and their couplings are reviewed. The intriguing physical effects and applications related to local and/or nonlocal modes are discussed, along with large-area optimization strategies for directly simulating optical responses. Several current challenges and future directions in this attractive field are summarized as well.
Article
Chemistry, Multidisciplinary
Daniela Scorza, Sabrina Vantadori, Raimondo Luciano
Summary: This study extends the two-phase stress-driven integral model to nanobeams with internal discontinuities, addressing the issue by introducing a mixture parameter. The analysis of various case studies and a centrally-cracked nanobeam demonstrates the strong dependency of fracture properties on characteristic length and mixture parameter values.
Article
Computer Science, Interdisciplinary Applications
Mahdi Javanbakht, Sam Mirzakhani, Mohammad Silani
Summary: This paper investigates single and two variant martensitic transformations, including twinning, using the phase field approach. The study compares the local and nonlocal models with different kernels and analyzes various phase transformation examples. The results show that the compensated TP kernel (CTP) performs better than the well-known two-phase (TP) kernel and the local model in resolving certain issues.
ENGINEERING WITH COMPUTERS
(2023)
Article
Optics
Jairo D. Garcia, Fabiola Gomez, Victor Velazquez, Boris A. Rodriguez
Summary: The semiclassical theory predicts zero even-order susceptibilities for centrosymmetric materials, but experimental observations show the existence of even-order nonlinear optical phenomena. This work presents an extension of the theory, proposing more general expressions for susceptibilities and suggesting that bulk even-order susceptibilities may transform as pseudo-tensors and have nonzero values in centrosymmetric structures. Examples are provided to explain conflicting experiments. The results have important implications in various fields such as lasing, communications, imaging, quantum optics, and quantum computing, expanding the range of materials for nonlinear effects.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Engineering, Multidisciplinary
Yiyuan Jiang, Li Li, Yujin Hu
Summary: A nonlocal surface theory is proposed to describe the interactions between surface and bulk media of nanostructures. The theory considers nonlocal contributions and receptions of surface and divides the nonlocal interactions into four parts: bulk-to-bulk, surface-to-surface, surface-to-bulk, and bulk-to-surface. Results show that the surface-to-bulk nonlocal interactions have the same order of magnitude as the bulk-to-bulk interactions.
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE
(2022)
Article
Optics
Fatemeh Abtahi, Pallabi Paul, Sebastian Beer, Athira Kuppadakkath, Anton Pakhomov, Adriana Szeghalmi, Stefan Nolte, Frank Setzpfandt, Falk Eilenberger
Summary: Second-harmonic generation (SHG) is observed in periodic stacks of alternating, subwavelength dielectric layers due to the broken symmetry at the surface. The surface SHG is significantly enhanced by the large number of surfaces in these stacks. Experimental results on SiO2/TiO2 multilayer stacks grown by PEALD demonstrate substantial SHG under large angles of incidence, surpassing that of simple interfaces. The experimental results are in agreement with theoretical calculations.
Article
Chemistry, Physical
Yann Foucaud, Jean-Francois Dufreche, Bertrand Siboulet, Magali Duvail, Alban Jonchere, Olivier Diat, Rodolphe Vuilleumier
Summary: The study proposes a method to simulate the SHG signal of a model water/air interface by considering both local and non-local contributions. The results demonstrate the importance of including the bulk quadrupole contribution in predicting the SHG response.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Shayan Z. T. Motlagh, Asghar Akbari Foroud
Summary: This paper proposes an intelligent approach, based on empirical Fourier decomposition (EFD), to identify harmonic sources at the point of common coupling (PCC) in different inverter-based distributed generations (DGs). The proposed method uses strife feature selection to reduce memory storage and computational burden. The voltage signals are used for processing, which decreases the processing time and the need for measurement devices. The whale optimization algorithm (WOA) is used as the optimizer for the support vector machine (SVM) classifier parameters.
IET GENERATION TRANSMISSION & DISTRIBUTION
(2023)
Article
Mechanics
Daniela Scorza, Raimondo Luciano, Sabrina Vantadori
Summary: The study analyzes the size-dependent fracture behavior of stressed nanobeams using the two-phase local/nonlocal Stress-Driven integral Model (SDM), showing that nanobeams have superior fracture performance compared to large-scale beams.
COMPOSITE STRUCTURES
(2022)
Article
Mathematics, Applied
Yanming Ren, Hai Qing
Summary: In this paper, new general strain- and stress-driven two-phase local/nonlocal piezoelectric integral models are proposed to distinguish the difference of nonlocal effects on the elastic and piezoelectric behaviors of nanostructures. It is found that purely strain- and stress-driven nonlocal piezoelectric integral models are ill-posed, and the traditional nonlocal piezoelectric differential model would lead to inconsistent bending response for Euler-Bernoulli piezoelectric beam under different boundary and loading conditions.
APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION
(2021)
Article
Optics
Nader Daneshfar, Zeinab Noormohammadi
Summary: This paper investigates the linear and nonlinear optical response of spherical plasmonic nanoshells within the nonlocal hydrodynamical model for conduction electrons, focusing on the optical absorption and surface second-harmonic generation (SHG) associated with metallic core-shell nanoparticles. The study shows that nonlocal effects can enhance SHG from plasmonic nanoshells, lead to surface SHG radiation from nanoshell surfaces, and influence the resonant wavelengths of optical absorption and SHG in metal nanoshells.
JOURNAL OF LUMINESCENCE
(2021)
Article
Chemistry, Multidisciplinary
Dongying Fu, Jianli Xin, Yueyue He, Shichao Wu, Xinyuan Zhang, Xian-Ming Zhang, Junhua Luo
Summary: The introduction of chirality into organic-inorganic hybrid perovskites is expected to achieve excellent photoelectric and nonlinear materials related to circular dichroism. By developing the SHG-CD effect, circularly polarized light can be distinguished in OIHPs bulk single crystals, extending the detection range to the near infrared region. The anisotropy factor (g(SHG-CD)) through SHG-CD signal is as high as 0.21.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Multidisciplinary
Zhu XiaoWu, Li Li
Summary: This study demonstrates how both cross-sectional nonlocal interactions and axial nonlocality affect the tensile behaviors of nanobars. When the length-to-height ratio is small, nonlocal interactions become significant, while in slender bars, the main nonlocal effect stems from the nonlocal cross-sectional effect. Overcoming the ill-posed problem of pure nonlocal integral elasticity can be achieved by employing both pure nonlocal integral elasticity and surface elasticity.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2021)
Article
Chemistry, Physical
Guillaume Le Breton, Oriane Bonhomme, Emmanuel Benichou, Claire Loison
Summary: In this study, electronic gamma(2 omega, omega, omega,0) and beta(2 omega, omega, omega) for water molecules in liquid water are computed using QM/MM calculations. The average value of gamma(2 omega, omega, omega,0) is smaller in the liquid phase compared to the gas phase, with a relatively small standard deviation among molecules. The study demonstrates that the average bulk second hyperpolarizability gamma(2 omega, omega, omega,0) can be used to describe the electrostatic effects of the distant neighborhood on the first hyperpolarizability beta(2 omega, omega, omega).
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Acoustics
Carlos Collado, Marta Gonzalez-Rodriguez, Jordi Mateu, Rafael Perea-Robles, Robert Aigner
Summary: This work introduces a new method to analyze weak distributed nonlinear effects in bulk acoustic wave resonators and filters, focusing on harmonic and intermodulation generation. The new methodology is compared with harmonic balance analysis, showing a drastic reduction in computation time with identical results. The IOES method is approximately 700 times faster for simulating a seventh-order filter compared to HB simulations.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2021)
Article
Chemistry, Multidisciplinary
Emanuele Marino, Alice Sciortino, Annemarie Berkhout, Katherine E. MacArthur, Marc Heggen, Tom Gregorkiewicz, Thomas E. Kodger, Antonio Capretti, Christopher B. Murray, A. Femius Koenderink, Fabrizio Messina, Peter Schall
Article
Physics, Applied
B. Miranda, R. Moretta, S. De Martino, P. Dardano, I. Rea, C. Forestiere, L. De Stefano
Summary: A 3D plasmonic sensing platform utilizing citrate gold nanoparticles (AuNPs) and poly-(ethylene glycol) diacrylate (PEGDA) hydrogels is proposed for biosensing applications, with tunable optical properties and sensitivity predicted by the Mie theory. AuNPs embedded in the hydrogel network are found to be more stable than in colloidal solutions, with the PEGDA hydrogel physically retaining the gold nanoparticles even after full swelling in liquids. This property enables the development of a biorecognition hybrid device for optical detection of small molecules like biotin.
JOURNAL OF APPLIED PHYSICS
(2021)
Review
Chemistry, Analytical
Bruno Miranda, Ilaria Rea, Principia Dardano, Luca De Stefano, Carlo Forestiere
Summary: This review summarizes the latest research progress in flexible platforms for optical biosensors, focusing on localized surface plasmon resonance (LSPR) and surface-enhanced Raman spectroscopy (SERS)-based biosensors and discussing some of the current issues in the field. The study demonstrates the potential for large-scale, cost-effective plasmonic platforms and highlights the performance of hybrid nanomaterials and nanocomposites in comparison to traditional hard substrates.
Article
Physics, Applied
Carlo Forestiere, Giovanni Miano, Bruno Miranda
Summary: This study investigates the electromagnetic scattering from a network of high-permittivity dielectric thin wires with a size smaller than or equal to the operating wavelength. A simple theory for the polarization current intensities induced in the wires is developed, along with an analytical expression for the induced polarization currents. The spectral properties of the loop inductance matrix are connected to the network's resonances, and the allowed current modes and resonances are deduced from the circuit's digraph topology. The study also includes radiative coupling effects, with derived radiative frequency shifts and quality factors. The introduced concept and methods may have applications in both radio frequencies and nanophotonics.
PHYSICAL REVIEW APPLIED
(2021)
Article
Biochemistry & Molecular Biology
Chiara Tramontano, Bruno Miranda, Giovanna Chianese, Luca De Stefano, Carlo Forestiere, Marinella Pirozzi, Ilaria Rea
Summary: This study combined inorganic diatomite nanoparticles with gelatin-stabilized gold nanoparticles to develop an optical platform for drug delivery. By increasing the thickness of the gelatin shells, the drug loading capacity was improved. Optical modeling was used to monitor drug release processes and proved to be an efficient tool for designing polymer-coated nanocarriers.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Nanoscience & Nanotechnology
Mariano Pascale, Sander A. Mann, Carlo Forestiere, Andrea Alu
Summary: This study explores the resonant phenomena of plasmonic nanostructures with singular geometries, showing that while individual plasmon resonances obey the Chu limit, the connection between the Q factor and the overall bandwidth of the scattering response is lost. The research sheds light on the exotic resonant phenomena when plasmonic materials are shaped in singular geometries, outlining their opportunities and limitations for nanophotonics.
Article
Materials Science, Multidisciplinary
Bruno Miranda, Rosalba Moretta, Principia Dardano, Ilaria Rea, Carlo Forestiere, Luca De Stefano
Summary: A hybrid plasmonic transducer made of a Poly-(ethylene glycol) diacrylate (PEGDA) hydrogel and citrate gold nanoparticles is able to detect the biotin-streptavidin interaction at picomolar concentrations. The fabrication strategy is large-scale, tunable, and low-cost. The device is highly reproducible and optically stable, and it can be used in dual-optical mode.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Engineering, Electrical & Electronic
Mariano Pascale, Sander A. Mann, Dimitrios C. Tzarouchis, Giovanni Miano, Andrea Alu, Carlo Forestiere
Summary: This study determines the lower bounds of the Q factors of small-size plasmonic and high-permittivity dielectric resonators, and provides closed-form analytical expressions for the electric and magnetic polarizability tensors. The results allow for the determination of the corresponding optimal current density field and open up exciting opportunities in the analysis and design of optimally shaped resonators for enhanced light-matter interactions in the field of nano-optics and metamaterials.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Carlo Forestiere, Giovanni Gravina, Giovanni Miano, Guglielmo Rubinacci, Antonello Tamburrino
Summary: This paper introduces longitudinal and transverse static surface modes and applies them to solve the scattering problem from penetrable objects with arbitrary shapes. The longitudinal static modes are eigenmodes that determine the tangential component of the electric field, while the transverse static modes determine the tangential component of the vector potential. These static modes are solely determined by the object's shape and can be used regardless of the operating frequency or material properties. By expanding the unknown surface currents in terms of the static modes and using Galerkin-projections, the numerical solution of the scattering problem can be obtained more efficiently and with reduced CPU-time.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Optics
Carlo Forestiere, Giovanni Miano
Summary: In this paper, the macroscopic electromagnetic response of a finite size dispersive dielectric object in unbounded space is studied using the Heisenberg picture and a Hopfield type scheme. The time evolution of the polarization density field and the electric field observable are expressed through integral operators, and the statistical functions of the observables are expressed through integral operators of the statistics of the initial conditions. The diagonalization of the Hamiltonian is achieved by expanding the polarization density field observable in terms of static longitudinal and transverse modes. Few static modes are needed to calculate each element of the impulse response matrix for dielectric objects of different sizes.
Article
Optics
Carlo Forestiere, Giovanni Miano
Summary: This article presents an approach to the full wave analysis of the time evolution of induced polarization in electromagnetic scattering from dispersive nonmagnetic particles. It is based on the Hopfield model, expansion of polarization and radiation fields, and principle of least action. The method provides a general way to analyze the temporal evolution of polarization induced in dispersive particles of any shape.
Proceedings Paper
Engineering, Electrical & Electronic
Bruno Miranda, Rosalba Moretta, Principia Dardano, Ilaria Rea, Carlo Forestiere, Luca De Stefano
PROCEEDINGS OF 2020 ITALIAN CONFERENCE ON OPTICS AND PHOTONICS (ICOP)
(2020)
