We studied the performance of a plasmonic chain waveguide by employing an array of nanoshell structures. The optical properties of the proposed structures are discussed in detail with respect to the mode coupling for both low-order resonances and high-order multipolar modes. We show (a) that the choice of nanoshell particles allows an easy tuning of the structure's resonances according to given wavelength specifications and (b) that the resonances are insensitive to the chain length when high-order multipolar modes are involved. Moreover, chain waveguides that are operated on resonant multipolar modes provide propagation lengths up to 1.88 microm, which is beyond what is maximally achieved by conventional solid particle chains. This is attributed to the large field enhancement within metallic nanoshell structures, as well as to far-field effects, which play an important role in low-loss light guiding along nanoshell chains.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/josaa.25.001783 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Convergence of Tandem Catalysis and Nanoconfinement Promotes Electroreduction of CO to C Products.
ACS Appl Mater Interfaces
December 2024
Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China.
An efficient electrocatalytic conversion of CO into valuable multicarbon (C) products requires enhanced C-C coupling of C1 intermediates. Herein, we combine a tandem effect with a confinement strategy to construct a hollow CuO@Ag nanoshell electrocatalyst with a well-defined porous structure to improve the *CO intermediate coverage on the catalyst surface. In CO electroreduction, in situ Raman spectroscopy shows that the introduction of Ag can not only promote the CO intermediate production but also improve the stability of Cu to capture the *CO intermediate due to a CO-tandem effect, and the fine-tuned hollowness degree and pore size of CuO@Ag create a spatially confined microenvironment for trapping CO as well as the enrichment of CO, which greatly facilitate subsequent C-C coupling for C product.
View Article and Find Full Text PDFAu@Ag hollow nanoshells-based SERS integrated microfluidic chip as a sample-to-answer platform for the ultra-sensitive detection of geosmin.
Anal Chim Acta
January 2025
College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China. Electronic address:
Article Synopsis
- * The study develops a detection platform using Surface-enhanced Raman spectroscopy (SERS) with dual-metal nanomaterials that enhances sensitivity, allowing the quick and direct measurement of GSM with results in as little as 4 minutes.
- * The new detection method is highly sensitive, with a detection limit of 0.16 ng/L for GSM, and shows great potential for real-time monitoring of earthy odors without the need for labels or biomaterials.
Construction of uniform MgO nanoshells for improved high-voltage performance of Li-ion batteries.
Chem Commun (Camb)
December 2024
CAS Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China.
A conformal Mg(OH) nanoshell was constructed through a wet-chemical process, where a gradual release of OH as the precipitating agent was designed to ensure the heterogeneous growth of the coating species. Such a coating treatment was found to be efficient in improving the structural stability and electrochemical stability of a 5 V LiNiMnO cathode.
View Article and Find Full Text PDFFabrication of highly biocompatible SiO@Au-BSA nanoconjugates: Towards a promising thermal therapy route.
J Photochem Photobiol B
December 2024
Centro de Investigación en Genética y Ambiente-Universidad Autónoma de Tlaxcala, Autopista San Martín-Tlaxcala Km 10.5, Ixtacuixtla, 90120 Tlaxcala, Mexico. Electronic address:
SiO@Au nanoshells have gained relevance in recent years, especially in biomedical areas, acting as thermal therapy agents due to their high capacity to absorb light and transform it into heat that increases the temperature of the medium. Therefore, it is important to develop methodological strategies to obtain stable, highly specific and biocompatible nanoparticles. In this work, the synthesis of core-shell structures based on SiO@Au is reported, where the growth a thin shell ⁓ 46 nm on silica platform was possible.
View Article and Find Full Text PDF[Hyperthermia on colorectal cancer: gold nanoshells-mediated photothermal therapy].
Rev Med Inst Mex Seguro Soc
July 2024
Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, Unidad de Biotecnología Médica y Farmacéutica, Laboratorio de Investigación Traslacional de Terapias contra el Cáncer. Guadalajara, Jalisco, México.
Colon cancer or colorectal cancer is one of the most common malignant neoplasms in the world, characterized by uncontrolled cell growth on the colon mucosa. Treatment approaches depend primarily on the characteristics of the tumor´s localization, size, metastasis, and the health status of the patient. Nanomedicine shows itself as a novelty strategy to overcome the limitations of the therapies used in the clinic due to the disregard of the mechanisms associated with multidrug resistance because of the nanometric size of the particles utilized.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!