Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Manipulating the optical landscape of single quantum dots (QDs) is essential to increase the emitted photon output, enhancing their performance as chemical sensors and single-photon sources. Micro-optical structures are typically used for this task, with the drawback of a large size compared to the embedded single emitters. Nanophotonic architectures hold the promise to modify dramatically the emission properties of QDs, boosting light-matter interactions at the nanoscale, in ultracompact devices. Here, we investigate the interplay between gallium arsenide (GaAs) single QDs and aluminum gallium arsenide (AlGaAs) nanostructures, capitalizing on the Kerker condition for precise control of the QD emission directivity. An extensive analysis of the photoluminescence spectra of several QDs embedded in nanodisks revealed a pronounced directivity enhancement due to the Kerker effect, confirmed by theoretical simulations, resulting in a 14-fold increase of emitted intensity. Angle-resolved spectroscopy experiments also proved that the integration of GaAs QDs within nanostructures determines a precise angled emission, offering a distinctive avenue for manipulating the spatial characteristics of emitted light by exploiting Mie resonances. This work contributes to the optimization of QD integration in nanostructures and suggests potential improvements for applications in optical communications.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsnano.4c13327 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Quantitative estimation of odorous emissions from heterogeneous area sources via thermal imaging drone.
Sci Total Environ
September 2025
Politecnico di Milano, Department of Chemistry, Materials and Chemical Engineering, "Giulio Natta" - Piazza Leonardo da Vinci 32, 20133, Milano, Italy.
The outdoor storage of wood chips, used in biomass thermal power plants, may lead to different diffuse gaseous emissions. These emissions can contain different molecules, often with a non-negligible odour potential. Despite this need, these solid area sources are particularly complex to be characterised, due to their very high heterogeneity determined by a complex phenomenon of self-heating.
View Article and Find Full Text PDFHydrothermal-based Wastewater Solids Management for Targeted Resource Recovery and Decarbonization in the Contiguous U.S.
Environ Sci Technol
September 2025
The Grainger College of Engineering, Department of Civil and Environmental Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States.
Wastewater solids management is a key contributor to the operational cost and greenhouse gas (GHG) emissions of water resource recovery facilities (WRRFs). This study proposes a 'waste-to-energy' strategy using a hydrothermal liquefaction (HTL)-based system to displace conventional energy- and emission-intensive practices. The proposed system directs HTL-produced biocrude to oil refineries and recovers regionally tailored nitrogen and phosphorus fertilizers.
View Article and Find Full Text PDFRecent Progress In Organic High-Temperature Photothermal Materials.
Chem Asian J
September 2025
School of Science and Engineering, Shenzhen Institute of Molecular Aggregate Science and Engineering, The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen), Shenzhen, 518172, China.
Organic high-temperature photothermal materials (T > 100 °C) have demonstrated significant application values because of their ability to exceed the temperature limits of traditional organic photothermal materials, enabling spatiotemporally controllable long-distance heating and high-temperature conversion of laser or sunlight. In this review, we summarize the recent progress in organic high-temperature photothermal materials, mainly including organic small molecule and polymer materials. Their photothermal conversion mechanisms and the factors influencing their performance as well as their applications, including photo controlled ignition/deflagration, photothermal induced actuators, photo controlled metal processing, and concentrated sunlight energy conversion were elaborated.
View Article and Find Full Text PDFReview of Graphene Materials as Electrocatalysts for the Production of Green Ammonia from Nitrogen-Containing Compounds.
Chem Rec
September 2025
Millenium Institute on Green Ammonia as Energy Vector, Pontificia Universidad Católica de Chile, Santiago, 7820436, Chile.
Ammonia is one of the most important inputs in the global chemical industry, used primarily in fertilizers and explosives. It is increasingly recognized as a potential energy carrier. Its production is dominated by the Haber-Bosch process, which requires high energy consumption and significant capital investment, and contributes significantly to greenhouse gas emissions.
View Article and Find Full Text PDFP-Doped Cu-N-C Single-Atom Catalysts Boost Cathodic Electrochemiluminescence of Luminol for MicroRNA-320d Detection.
Anal Chem
September 2025
Institute for Advanced Interdisciplinary Research (iAIR), School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China.
Compared with efficient anodic luminol electrochemiluminescence (ECL), the disadvantage of cathodic ECL is that luminol cannot be electrochemically oxidized in a direct manner, and the conversion efficiency of dissolved oxygen (DO) as the coreactant to reactive oxygen species (ROS) is poor, which limits its application. Therefore, it is necessary to develop a functional catalyst suitable for the luminol-DO ECL system to directly trigger cathodic ECL. In this study, a coordination microenvironment modulation strategy was proposed.
View Article and Find Full Text PDF