Article
Nanoscience & Nanotechnology
Roberto Merlin
Summary: The tutorial discusses the differences between the near and far regions of the electromagnetic field, highlighting the source-dependent behavior of the former and the universal nature of the latter. It also delves into the field patterns of near-field plates used for sub-wavelength applications, providing examples of exponential and algebraic decays. Additionally, it demonstrates how a properly designed system of two parallel near-field plates can generate fields with pseudo minima, which could be beneficial for certain applications.
Article
Chemistry, Multidisciplinary
Huimin Wang, Tao Wang, Simei Zhong, Jinyan Zhang, Ruoqin Yan, Peng Xu, Yu-hui Zhang, Xinzhao Yue, Lu Wang, Yuandong Wang, Xuyang Yuan, Jinwei Zeng, Jian Wang
Summary: This study compares the sensitivity of PSPR sensor and the resonant coupling mode between PSPR and LSPR sensors, showing significantly improved sensitivity of PSPR in the near-infrared region excitation wavelength. The biosensing sensitivity of GF-AuNP is proven to be better than PSPR in the carcinoembryonic antigen immunoassay, and the study serves as a guide for design of plasmonic sensors for detecting substances at different scales.
Article
Chemistry, Multidisciplinary
Rohith Mittapally, Ju Won Lim, Lang Zhang, Owen D. Miller, Pramod Reddy, Edgar Meyhofer
Summary: Recent experiments have revealed that near-field radiative heat transfer (NFRHT) between objects separated by nanoscale gaps can significantly enhance heat transfer rates. Silicon dioxide (SiO2) surfaces, which support surface phonon polaritons (SPhP), demonstrate the most prominent enhancements. However, theoretical analysis suggests that SPhPs in SiO2 occur at frequencies much higher than optimal. In this study, we demonstrate theoretically that NFRHT mediated by SPhPs can be 5-fold larger for materials supporting SPhPs closer to the optimal frequency of 67 meV at room temperature. Furthermore, we experimentally show that MgF2 and Al2O3 closely approach this limit, with near-field thermal conductance between MgF2 plates separated by 50 nm reaching nearly 50% of the global SPhP bound. These findings lay the foundation for exploring the limits of radiative heat transfer rates at the nanoscale.
Article
Astronomy & Astrophysics
Caio C. Holanda Ribeiro, Vitorio A. De Lorenci
Summary: The velocity dispersions of a charged test particle due to modified vacuum fluctuations of quantum fields are divergent under idealized boundary conditions. When the mirror is modeled by a Drude-like susceptibility, these dispersions become regular, indicating that the assumption of idealized boundary conditions is the cause of the divergences. The implementation of a more realistic description reveals that the dispersion curves exhibit oscillatory behavior due to the effective mass of field modes inside the medium.
Article
Engineering, Electrical & Electronic
Erda Wen, Daniel F. Sievenpiper, Patrick P. Mercier
Summary: In this letter, we analyze the mechanism of two coils in the near-field/far-field hybrid zone quantitatively. We propose to separate the coupling into static and radiative instead of the ambiguous near or far field. The results of our impedance matrix model demonstrate that the dominance of these mechanisms depends on antenna geometry and arrangement. We illustrate how to utilize the hybrid coupling mechanism to achieve maximized gain and broaden channel bandwidth.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Optics
Tevfik bulent Kanmaz, Efe Ozturk, Hilmi volkan Demir, Cigdem Gunduz-demir
Summary: This paper proposes and demonstrates a deep-learning-enabled method for rapid prediction of electromagnetic near-field response and inverse prediction of metasurface designs. By using an encoder-decoder neural network, the common limitation of predicting only transmission spectra is overcome.
Article
Engineering, Electrical & Electronic
Quan Huang, Rongquan Chen, Wenxiao Fang, Xin Liu, Xinxin Tian, Weiheng Shao, Lei Wang, Chen Sun, Zhiqiang Yi, Yunfei En, Guoguang Lu, Zeyi Li, Yan Gao
Summary: This article investigates the localization of radiated emission sources in integrated circuits (ICs) using near-field mapping technology. By analyzing the relationship between the physical position of the circuit and the distribution of electromagnetic field, the study demonstrates the effective localization of emission sources in microstrip line models and large-scale IC experiments.
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
(2022)
Article
Chemistry, Physical
Yijia Huang, Rongxiao Yang, Tianxiao Xiao, Hong Li, Mingyang Tian, Zhengwei Xie, Jie Zheng, Jianqi Zhu, Yarong Su, Weidong Chen, Ke Liu, Mingjun Tang, Ling Li
Summary: A metal-insulator-metal (MIM) 2.5D metasurface is proposed with enhanced electromagnetic (EM) manipulation in both near-field and far-field. It is fabricated with high uniformity using a lithography-free method. Experimental demonstrations of centimeter-scale metadevices show broadband EM absorption, structural color display, and surface-enhanced Raman scattering.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Jiahao Pan, Wei Wang, Min Ji, Xing Xing, Zhenda Lu
Summary: This study reports a robust method to synthesize single-crystalline Ag nanocubes with high purity (>95%) and uniform size in oil phase, which has received little attention. The evolution of Ag nanoparticles from different reaction times reveals that multiply twinned seeds and single-crystalline seeds were formed together in the early stage of the reaction. The synthetic parameters such as temperature, air flow, and the concentration of cupric chloride and AgNO3 precursors have been systematically investigated to control the morphology and size of Ag nanocubes, with temperature playing a crucial role.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Xuan Yue, Jinlan Li, Nan Yan, Wei Jiang
Summary: Recently, the spontaneous organization of two types of nanoparticles into binary nanoparticle superlattices has been widely studied. The distributions and arrangements of the nanoparticles can be precisely controlled by adjusting the gap size between neighboring nanoparticles, allowing for the design of new functional materials and devices.
Article
Chemistry, Physical
Heng Xu, Spencer Hao, Benjamin J. Wiley
Summary: This study investigates the roles of polyvinyl-pyrrolidone (PVP) and bromide (Br-) in the anisotropic growth of Ag nanocubes using seed-mediated growth, single-crystal electrochemistry, and surface-enhanced Raman spectroscopy (SERS). The results show that Ag nanocubes can only form in the presence of both PVP and sufficiently high concentrations of Br-. Truncated octahedra form in the presence of PVP alone, and truncated cubes form in the presence of Br- alone. The study suggests that the chemisorption of Br- beneath a physisorbed layer of PVP creates a unique condition for the growth of Ag nanocubes.
CHEMISTRY OF MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
A. Boyer, N. Nolhier, F. Caignet, S. Ben Dhia
Summary: Near-field scan (NFS) is an effective method for diagnosing electromagnetic compatibility (EMC) issues, with some applications requiring quantitive measurements that rely on calibrated near-field probes (NFPs). The calibration of NFPs using microstrip lines may seem simple, but the determination of near-field distribution is complex and often requires 3-D electromagnetic (EM) simulation. This article proposes closed-form expressions based on quasi-static approximation to calculate near-field distribution over microstrip line and simple calibration structures, with frequency limits reaching several gigahertz to cover most EMC diagnosis needs at PCB and IC levels.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Nanoscience & Nanotechnology
Shuai Sun, Mengyue He, Yu Mao, Ran Li, Shuo Tian, Junqiao Wang
Summary: Dielectric materials have low energy losses and strong electromagnetic multipolar optical responses, and can be manipulated to excite and enhance anapole resonances, leading to enhanced photon emission and near-field enhancement.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Quan Huang, Yuxin Wu, Jiangao Ruan, Yan Gao, Wenxiao Fang, Chen Sun, Yunfei En, Peng Han
Summary: A nonlocal noise removal technique, called block-matching 3-D (BM3D), is introduced to enhance the quality of fuzzy electromagnetic patterns produced from a device's near field. The technique utilizes sparse representation in a 3-D transformation domain to remove noise based on the nonlocal self-similarity of the pattern. The effectiveness of the BM3D technique is demonstrated through applications in profile recovery, source localization, and pattern clustering.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Quan Huang, Yuxin Wu, Jiangao Ruan, Yan Gao, Wenxiao Fang, Chen Sun, Yunfei En, Peng Han
Summary: A nonlocal noise removal technique, called block-matching 3-D (BM3D), is used to enhance the quality of a blurry electromagnetic pattern generated from a device's near field. The technique analyzes the noise distribution in the pattern and removes it in a 3-D transformation domain using sparse representation. The BM3D technique is validated on weak emission profile recovery, source localization in a field programmable gate array (FPGA), and pattern clustering in a double data rate (DDR) synchronous dynamic random access memory (SDRAM) integrated circuit (IC), demonstrating its effectiveness in near-field scanning patterns of a device.
IEEE SENSORS JOURNAL
(2023)
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
Nanoscience & Nanotechnology
Adrien Lalisse, Abeer Al Mohtar, Minh Chau Nguyen, Remi Carminati, Jerome Plain, Gilles Tessier
Summary: Temperature characterization and quantification at the nanoscale is a core challenge in applications relying on photoinduced heating of nanoparticles. A new approach combining modulated photothermal stimulation and heterodyne digital holography allows for quantitative temperature measurements on individual nanoparticles with a precision of 0.3 K without the need for calibration or fitting parameters. Additionally, the dependence of temperature on the aspect ratio of gold nanoparticles is investigated, showing good agreement with numerical simulation.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Sarra Mitiche, Jean-Frederic Audibert, Sylvie Marguet, Bruno Palpant, Robert Bernard Pansu
Summary: The emission properties of the fluorescent probe SOSG are strongly dependent on the concentration of cetyltrimethylammonium bromide (CTAB), a widely used capping agent for nanoparticles synthesis and stabilization. The presence of CTAB significantly affects SOSG's sensitivity to O-1(2), due to the probe's aggregation in CTAB premicellar aggregates and micelles, as well as the emergence of fluorescent conformers in the micelles. It is important to consider the type of nanoparticle stabilizer when using SOSG probe, with investigations into the behavior of SOSG in the presence of other capping agents like citrate and Polyethylene Glycol (PEG) to determine the most suitable option.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Chemistry, Physical
Farid Kameche, Wajdi Heni, Siham Telitel, Loic Vidal, Sylvie Marguet, Ludovic Douillard, Celine Fiorini-Debuisschert, Renaud Bachelot, Olivier Soppera
Summary: The localized surface plasmon-induced photopolymerization of free-radical acrylate monomers is an efficient method for preparing metal/polymer hybrid nanoparticles with precise control over the thickness and distribution of the polymer on the nanoparticle surface. Experimental studies have shown that the photochemical pathway may be the main mechanism, although various mechanisms involving electromagnetic hot spots, thermoplasmonic effects, and electrochemical processes have been proposed.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
M. Hadded, A. Hmima, T. Maurer, A. Chehaidar, J. Plain
Summary: The paper theoretically analyzes the absorption and scattering efficiencies of a single magnetoplasmonic nanoparticle in human tissue, focusing on different nanostructures and their optical responses. It highlights the potential of these nanostructures in photothermal therapy, with an emphasis on the spectral position and magnitude of resonant absorption peaks.
Article
Nanoscience & Nanotechnology
Ali Issa, Irene Izquierdo, Melissa Merheb, Dandan Ge, Aurelie Broussier, Nawres Ghabri, Sylvie Marguet, Christophe Couteau, Renaud Bachelot, Safi Jradi
Summary: The article introduces a general strategy for patterning different types of nanoparticles, allowing precise immobilization and organization even within complex 3D structures. By controlling the position and density of nanoparticles within photopolymer, potential applications in nanophotonics are shown. Successful integration of quantum dots within a gold nanocube demonstrates high spatial resolution and nanometer precision, highlighting the potential of this hybrid nanosource of light.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Wajdi Chaabani, Julien Proust, Samuel Ouellet, Artur Movsesyan, Jeremie Beal, Renaud Bachelot, Tao Xu, Anne-Laure Baudrion, Pierre-Michel Adam, Denis Boudreau, Abdallah Chehaidar, Jerome Plain
Summary: The paper presents a new method to obtain hybrid dielectric-metal nanoparticles, with different types of hybrid colloidal structures achieved by increasing the stabilizing agent. The obtained colloidal heterostructures were analyzed and the optical properties were carefully studied, revealing a splitting phenomenon in the extinction spectra.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Biomaterials
Sarra Mitiche, Syrine Gueffrache, Sylvie Marguet, Jean-Frederic Audibert, Robert Bernard Pansu, Bruno Palpant
Summary: The study shows that adding a dense silica shell around gold nanoparticles can efficiently inhibit the production of reactive oxygen species, making them safer for a range of biomedical developments.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Nanoscience & Nanotechnology
Marion Castilla, Silvere Schuermans, Davy Gerard, Jerome Martin, Thomas Maurer, Uri Hananel, Gil Markovich, Jerome Plain, Julien Proust
Summary: This article reports on a method for the production of crystalline aluminum nanoparticles starting from commercial aluminum foils without the use of a catalyst. The obtained nanoparticles have long-term stability in ethanol and exhibit well-defined plasmonic resonances.
Article
Optics
Dandan Ge, Ali Issa, Safi Jradi, Christophe Couteau, Sylvie Marguet, Renaud Bachelot
Summary: This paper demonstrates the selective immobilization of nano-emitters on gold nanocubes using a smart polymer, achieving spatial memory of specific plasmonic modes and polarization sensitivity. The ability to adjust the statistical average lifetime is also shown.
PHOTONICS RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Jerome Deumer, Brian R. Pauw, Sylvie Marguet, Dieter Skroblin, Olivier Tache, Michael Krumrey, Christian Gollwitzer
Summary: This article presents a versatile software package called CDEF, which is a Python extension used to calculate approximate scattering profiles of arbitrarily shaped nanoparticles. The software generates a quasi-randomly distributed point cloud and utilizes the open-source software DEBYER to efficiently evaluate Debye's scattering formula for small-angle X-ray scattering (SAXS). The study demonstrates that the quasi-random distribution provides faster convergence compared to a true-random distribution, especially at higher momentum transfer. The software's usability is shown through the evaluation of scattering data of Au nanocubes with rounded edges, and its accuracy is validated through comparison with analytically known form factors.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2022)
Article
Materials Science, Multidisciplinary
Thinhinane Aoudjit, Andreas Horrer, Sergei Kostcheev, Renaud Bachelot, Jerome Plain, Davy Gerard
Summary: This article reports a subwavelength imaging approach based on the interaction between the enhanced optical near-field around chiral nanoparticles and an azobenzene molecular probe. It is experimentally demonstrated that the near-field of chiral structures exhibit dissymmetry under left and right circular polarizations. The near-field dissymmetry factor, related to the local circular dichroism of the near-field intensity, can be experimentally mapped.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Nicolas Feltin, Loic Crouzier, Alexandra Delvallee, Francesco Pellegrino, Valter Maurino, Dorota Bartczak, Heidi Goenaga-Infante, Olivier Tache, Sylvie Marguet, Fabienne Testard, Sebastien Artous, Francois Saint-Antonin, Christoph Salzmann, Jerome Deumer, Christian Gollwitzer, Richard Koops, Noham Sebaihi, Richard Fontanges, Matthias Neuwirth, Detlef Bergmann, Dorothee Hueser, Tobias Klein, Vasile-Dan Hodoroaba
Summary: This study aims to propose new reference certified nanomaterials to improve the reliability and traceability of nanoparticle size measurements. A comparison of different measurement techniques showed consistent results. For complexly shaped nanoparticles, the use of hybrid approaches combining multiple techniques improved the reliability of size results.
Article
Optics
Hongshi Chen, Quanbo Jiang, Ali Issa, Borui Li, Dandan Ge, Safi Jradi, Jacques Lalevee, Sylvie Marguet, Regis Deturche, Christophe Couteau, Jerome Plain, Renaud Bachelot
Summary: We report on a novel active probe for scanning near-field optical microscopy (SNOM) using a fluorescent nanosphere as a secondary source. The spatial resolution is determined by the size of the fluorescent nanosphere, and the polarization-dependent near-field images are ascribed to the local excitation rate enhancement. The measurement of the distance-dependent fluorescence lifetime provides evidence of modified local density of states, allowing extraction of additional information during near-field scanning.
Article
Chemistry, Multidisciplinary
Feifei Zhang, Jerome Plain, Davy Gerard, Jerome Martin
Summary: This study numerically investigates the influence of surface roughness on the plasmonic properties of aluminum nanodisks, revealing different effects on the out-of-plane quadrupolar mode and in-plane dipolar mode. The results show that increasing surface roughness significantly dampens the quadrupolar mode while broadening and redshifting the dipolar resonance. These effects are attributed to the decoherence and dissipation of electronic oscillations due to surface roughness, and are experimentally confirmed by characterizing the optical properties of periodic aluminum nanodisk arrays.
