Aggregation-induced emission (AIE) molecules have great potential to enhance the performance of micronano lasers due to their excellent aggregated luminescence properties, so it is valuable to expand their applications in micronano lasers. In this work, a typical AIE active fluorescent dye motif 9,10-bis(2,2-diphenylvinyl) anthracene (BDPVA) was selected as the gain medium. First, drop-casting was used to fabricate BDPVA single-crystal nanowires, which can be used as Fabry-Perot (FP)-type resonators with a lasing threshold of 49.4 μJ/cm. Furthermore, we innovatively doped BDPVA molecules as gain mediums into external polymer Whispering-Gallery-Mode (WGM)-type resonators via the emulsion self-assembly method. Fabricated BDPVA-doped polystyrene (PS) microspheres exhibit a much lower lasing threshold of 9.04 μJ/cm. These results prove that the BDPVA molecules, in addition to realizing the reported AIE single-crystal lasers, can also be used as a guest-doped gain medium in the resonant cavity for obtaining better fluorescence gain. In addition, multimode tunability of two types of lasers has been successfully achieved by tuning the structure of the resonant cavity. This work further expands the application potential of AIE materials and will provide a useful reference for the rational design and fabrication of photonic micronano laser components using AIE materials.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsami.4c09070 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Efficacy of Air and Oxygen Micro-nano Bubble Waters Against Colletotrichum gloeosporioides and Impacts on Postharvest Quality of 'Fan Retief' Guava Fruit.
J Food Prot
December 2024
Department of Food Science, Faculty of AgriSciences, Stellenbosch University, Matieland, South Africa; AgriFood BioSystems and Technovation Research Group, Africa Institute for Postharvest Technology, Faculty of AgriSciences, Stellenbosch University, Matieland, South Africa. Electronic address:
This study focused on the application of micro-nano bubbles (MNBs) water generated using air or oxygen (O), as an alternative to chlorine-based wash for fruits. For the in vitro and in vivo investigation, 10 spore or conidia/mL Colletotrichum gloeosporioides suspension was used, and treated with solutions of air- or O-MNB for 30- or 60-min, sodium hypochlorite (NaOCl), and untreated (as control). In the second experiment, freshly harvested guava fruits were washed with tap water (control), NaOCl (standard practice), air-, or O-MNB (for 15- or 30-min).
View Article and Find Full Text PDFLaser processing materials for photo-to-thermal applications.
Adv Colloid Interface Sci
December 2024
School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China.
Photothermal conversion materials (PCMs) are crucial component in solar-thermal energy technologies. Although various PCMs with excellent sunlight harvesting have been developed for colorful solar-thermal applications, uniform and large-scale production of PCMs remains a challenge, and the PCMs prepared through the conventional methods are often non-site specific. Laser processing technology (LPT), as an efficient, convenient, green and sustainable technology, can directly create micro/nano structures and patterns at specific locations on materials surface, attracting widespread attention in photo-to-thermal applications.
View Article and Find Full Text PDFNano-size Joule-Heating to Achieve Low-Ohmic Ag-Si Contact on Boron Emitters of n-TOPCon Solar Cells.
Small
December 2024
School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen, 518055, China.
Over the past decade, Tunnel Oxide Passivated Contact (TOPCon) solar cells have emerged as a leading technology for high-efficiency silicon solar cells. Conventional metallization processes using silver/aluminum (Ag/Al) pastes encounter significant hurdles due to reliability risks and insufficient contact quality. Recent advancements in laser-induced metallization technologies, particularly laser-enhanced contact optimization (LECO), offer promising solutions.
View Article and Find Full Text PDFMicro-nano hierarchical urchin-like ZnO/Ag hollow sphere for SERS detection and photodegradation of antibiotics.
Nanophotonics
February 2024
School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
Hollow urchin-like substrates have been widely interested in the field of surface-enhanced Raman scattering (SERS) and photocatalysis. However, most reported studies are simple nanoscale urchin-like substrate with limited light trapping range and complicated preparation process. In this paper, a simple and effective controllable synthesis strategy based on micro-nano hierarchical urchin-like ZnO/Ag hollow spheres was prepared.
View Article and Find Full Text PDFHierarchical Micro/Nanostructures with Anti-Reflection and Superhydrophobicity on the Silicon Surface Fabricated by Femtosecond Laser.
Micromachines (Basel)
October 2024
State Key Laboratory of Intelligent Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Article Synopsis
- The study details the creation of micro/nano structures using femtosecond laser processing, which incorporate periodic microstructures, LIPSS, and nanoparticles.
- Perfluorosilane modification was applied to develop hydrophobic characteristics, resulting in an impressive reflective reduction of silicon surfaces to 3.0% and a high contact angle of 172.3°, indicating superhydrophobicity.
- The research contributes to understanding anti-reflection and superhydrophobicity mechanisms while offering new design methods for self-cleaning and anti-reflective surfaces.
Want 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!