Article
Materials Science, Multidisciplinary
Ylli Conti, Nicolas Passarelli, Jose Mendoza-Carreno, Leonardo Scarabelli, Agustin Mihi
Summary: The narrow spectral features of surface lattice resonances are highly suitable for the rational design of optical nanocavities aiming at enhanced light-matter interaction, ultrasensitive detection, or efficient light-energy conversion. Traditional fabrication methods for metal arrays are limited in scalability and adaptability, while template-assisted self-assembly offers a high-throughput approach for implementing colloidal plasmonic metasurfaces on various materials. In this study, pre-synthesized silver nanoparticles are used to construct versatile lasing architectures directly on the gain media, resulting in optical nanocavities with high-quality factors. The proposed architecture eliminates the need for an index-matching superstrate and allows for post-assembly modification of the plasmonic surface. Additionally, the angular dispersion of the metasurfaces is utilized to modify the angle of the lasing emission, achieving normal and off-normal lasing by adjusting the lattice parameter of the array. This research highlights the scalable and versatile nature of colloidal self-assembly techniques for the fabrication of plasmonic and photonic devices targeting advanced and non-linear optical phenomena.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Bo Chu, Yan Li, Yiheng Qin, Taozheng Hu, Facheng Zhong, Fanguang Zeng, Pei Ding, Li Shao, Yinxiao Du, Shuo Tian, Zhuo Chen
Summary: We present a transparent display using a metasurface of silver nanoparticles (Ag NPs) consisting of a transparent substrate and a layer of Ag NPs deposited by a dielectric film. By a simple annealing process, the prepared Ag NPs metasurface shows a deep transmission valley at a wavelength of lambda = 468 nm, enabling transparent display by projecting monochromatic images. Truncated nanospheres formed by deposited Ag NPs exhibit directional scattering properties with a wide angular beamwidth of about 90 degrees, resulting in wide viewing angles and high brightness characteristics of the fabricated displays. The transmission modes can also be controlled by the thickness of the deposited dielectric film to achieve a red-shifted wavelength of lambda = 527 nm. This simple and low-cost approach using traditional thin film deposition and annealing techniques allows for scalable fabrication of transparent displays in large areas.
Article
Chemistry, Multidisciplinary
Richard Robinson, Virginia Krause, Shan Wang, Shan Yan, Guojun Shang, Justine Gordon, Serena Tycko, Chuan-Jian Zhong
Summary: There is an increasing need to reduce the silver content in silver-based inks or pastes and achieve low-temperature sintering for scalable and low-cost production of printed wearable electronics. This study reports a scalable wet chemical synthesis method for the preparation of bimetallic silver-copper alloy nanoinks with room temperature sintering properties. It is found that the nanoinks can sinter on paper substrates at room temperature.
Article
Chemistry, Physical
Tomas Zikmund, Jiri Bulir, Michal Novotny, Ladislav Fekete, Sergii Chertopalov, Stefan Andrei Irimiciuc, Mariana Klementova, Jarmila Balogova, Jan Lancok
Summary: This study reports on the formation of silver nanoparticles by gas aggregation in a reaction chamber at room temperature. The size distribution of the nanoparticles was analyzed using atomic force microscopy, while their physical shape and optical properties were characterized using scanning and transmission electron microscopy and spectral ellipsometry. The nanoparticles were then incorporated into various materials to study their influence on emission spectra and transmittance at different annealing temperatures.
Article
Chemistry, Multidisciplinary
Devendra Kumar, Rudramani Tiwari, Rajiv Kumar Patel, Pubali Adhikary, S. Krishnamoorthi
Summary: A new, efficient method for the synthesis of graphene coated silver nanoparticles (GCAgNPs) from an organosilver compound has been developed. The presence of graphene over silver nanoparticles was confirmed by various analysis methods, and the electrical conductivity of the nanoparticles was also studied. These GCAgNPs show potential applications in the field of photovoltaics.
JOURNAL OF NANOPARTICLE RESEARCH
(2021)
Article
Biotechnology & Applied Microbiology
Touqeer Ahmad, Fazal Mahbood, Rizwana Sarwar, Ayesha Iqbal, Majid Khan, Sayyar Muhammad, Khamis AL-Riyami, Nusrat Hussain, Jalal Uddin, Ajmal Khan, Ahmed Al-Harrasi
Summary: In this study, gemifloxacin conjugated silver nanoparticles (Gemi-AgNPs) showed excellent antimicrobial and biofilm inhibition activities against human pathogens such as Proteus mirabilis and methicillin-resistant Staphylococcus aureus. Various analyses confirmed the antibacterial efficacy of Gemi-AgNPs, especially in inhibiting urease and disrupting bacterial cell morphology.
ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Suvarchala Vankudoth, Sunithabai Dharavath, Spoorthi Veera, Narsimhulu Maduru, Radhika Chada, Pavani Chirumamilla, Chaitanya Gopu, Shasthree Taduri
Summary: This study describes the green synthesis of silver nanoparticles using leaf extracts of Muntingia calabura, and characterizes their properties. The synthesized silver nanoparticles showed photoluminescence, antioxidant, anti-inflammatory, antidiabetic, and antibacterial effects.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2022)
Article
Biochemistry & Molecular Biology
Suvarchala Vankudoth, Sunithabai Dharavath, Spoorthi Veera, Narsimhulu Maduru, Radhika Chada, Pavani Chirumamilla, Chaitanya Gopu, Shasthree Taduri
Summary: This study focuses on the green synthesis of silver nanoparticles using leaf extracts of Muntingia calabura, demonstrating various biological activities. The synthesized particles were characterized using multiple methods, showing potential applications in various fields.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Nikita B. Leonov, Igor A. Gladskikh, Anton A. Starovoytov
Summary: The effect of the dielectric and chemical properties of the surrounding medium on the extinction spectra of silver island films is investigated. It is found that the shift in the plasmon resonance towards lower energies is determined by the permittivity of the medium and the shape of nanoparticles, and it is accompanied by an increase in the optical density. The shift of the resonance peak in anisotropic media depends on the local permittivity and molecular interactions with the substrate and nanoparticles.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
Arya, Ruby, Mohan Singh Mehata
Summary: In this study, silver nanoparticles were synthesized using leaves of the herbal plant Kalanchoe pinnata, showing antibacterial activity against E. coli and photocatalytic activity in dye degradation. The physicochemical parameters, absorption spectra, crystalline nature, stability, and morphology of AgNPs were examined to understand their properties.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Azeem Ullah, Perveen Fazil, Gul Rukh, Munira Taj Muhammad, Muhammad Rahim, Muhammad Ateeq, Rozina Khattak, Muhammad Sufaid Khan, Ola A. Abu Ali, Dalia Saleh
Summary: In this study, Ferene-S-conjugated silver nanoparticles were synthesized and showed selective quenching effects in the presence of Fe2+, along with substantial selectivity towards Fe2+ in the presence of other competitive ions. The system followed Beer's law over a concentration range of 110-190 nM with a detection limit of 110 nM.
Article
Chemistry, Multidisciplinary
Irina Postnova, Yury Shchipunov
Summary: In this study, a precursor with ethylene glycol residues was used to synthesize bio-nanocomposites of tannic acid and silica in neutral media without the addition of acid/alkali and organic solvents. The silica was fabricated in the form of optically transparent monoliths with various shapes and 2-4 nm pores. The polyphenol remaining in the pores of the silica matrix served as a reducing agent to synthesize gold and silver nanoparticles in situ. The resulting Au@SiO2 and Ag@SiO2 nanocomposites exhibited localized surface plasmon resonance and high catalytic activity.
Article
Chemistry, Multidisciplinary
Hiba Abbas Widatalla, Layla Fathi Yassin, Ayat Ahmed Alrasheid, Shimaa Abdel Rahman Ahmed, Marvit Osman Widdatallah, Sahar Hussein Eltilib, Alaa Abdulmoneim Mohamed
Summary: The use of silver nanoparticles (AgNPs), with their antiviral, antifungal, anti-inflammatory, and anticancer activities, is of great importance in nanomedicine. In this study, AgNPs were synthesized using a nontoxic and ecofriendly method with green tea leaf extract as a reducing agent. The synthesized AgNPs showed antibacterial activity against Staphylococcus aureus and Klebsiella sp., indicating their potential as an antimicrobial agent.
NANOSCALE ADVANCES
(2022)
Article
Chemistry, Multidisciplinary
Alexander Al-Zubeidi, Frederic Stein, Charlotte Flatebo, Christoph Rehbock, Seyyed Ali Hosseini Jebeli, Christy F. Landes, Stephan Barcikowski, Stephan Link
Summary: Gold-silver alloy nanoparticles are utilized for various applications, with gold acting as a stabilizer for silver to prevent corrosion and control the release of antimicrobial ions. The kinetics of silver ion leaching from these nanoparticles is characterized by two stages, with a reduction in leaching rate due to alloying with gold and a dependence on silver content. Individual nanoparticles show diverse silver ion leaching yields, with some nanoparticles completely releasing silver while others exhibit arrested leaching. Scalable production methods and kinetic studies provide insights for designing the durability and bioactivity of alloy nanoparticles.
Article
Materials Science, Multidisciplinary
Shahid Ali, Muhammad Rahim, Perveen Fazil, Malik Shoaib Ahmad, Azeem Ullah, Muhammad Raza Shah, Gul Rukh, Muhammad Ateeq, Rozina Khattak, Muhammad Sufaid Khan, Ola A. Abu Ali, Dalia I. Saleh
Summary: The study focused on synthesizing silver nanoparticles, functionalizing them with afzelechin, and analyzing their differences in surface plasmon resonance and morphology. Characterization was done using UV-Visible spectroscopy and atomic force microscopy.
Article
Engineering, Chemical
Qinwen Liu, Wenqi Zhong, Aibing Yu, Chi-Hwa Wang
Summary: With the improvement of the models for oxy-fuel co-firing, the adaptability of the models to the oxy-fuel atmosphere can be enhanced, and the accurate prediction of NO, N2O, SO2 emissions can be achieved. This study also provided valuable information for the design and operation control of oxy-fuel co-firing of coal and biomass in a fluidized bed.
Article
Engineering, Chemical
Haishan Miao, Hao Zhang, Xizhong An, Chunhai Ke, Aibing Yu
Summary: This study investigates the combined effect of particle shape and porosity on the momentum and heat transfer of granular matter under laminar flow. It is found that particle shape, characterized by aspect ratio, plays a dominant role in affecting the drag coefficient and Nusselt number, while the influence of porosity becomes significant under high Reynolds number conditions.
Article
Engineering, Chemical
Ying Cui, Wenqi Zhong, Zongyan Zhou, Aibing Yu, Xuejiao Liu, Jun Xiang
Summary: This study investigates the combustion process and heat transfer characteristics of the supercritical CO2 (S-CO2) power cycle in a circulating fluidized bed (CFB) using computational fluid dynamics (CFD) simulation and multiphase particle-in-cell (MP-PIC) method. A novel method using Radial Base Function (RBF) neural network for predicting simulation results is proposed to improve the prediction accuracy. The findings are significant for the design and optimization of S-CO2 CFB boilers.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Haiqi Nie, Aibing Yu, Lulu Jiao, Xiaoming Mao, Haifa Xu, Shibo Kuang
Summary: This study systematically investigates the effects of shaft gas injection on an oxygen blast furnace and finds that the fuel consumption decreases with increasing oxygen enrichment and shaft gas injection rate/temperature, while it increases less significantly at a higher injection position. When the oxygen enrichment is high or the shaft gas injection position/rate is low, the shaft injected gas can better replace coke, leading to improved utilization.
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2022)
Article
Engineering, Chemical
Zeyu Li, Zhenbo Tong, Aibing Yu, Hao Miao, Kaiwei Chu, Hao Zhang, Gang Guo, Jiang Chen
Summary: Hydrogen utilization is gaining attention and the supercritical water circulating fluidized bed reactor can generate hydrogen. This study uses CFD to analyze cyclone separation mechanisms under supercritical fluid, finding that changing the content of carbon dioxide and adding extra dipleg can improve cyclone performance.
Article
Thermodynamics
Haishan Miao, Hao Zhang, Xizhong An, Jiang Chen, Aibing Yu
Summary: This study investigates the distribution of drag coefficient (Cd) and average Nusselt number (Nu) of a porous spheroid in a fluid under different conditions using particle-resolved direct numerical simulations. The results show that the shape, Reynolds number, and porosity have noticeable effects on Cd and Nu, and there are certain trends in their variations within certain ranges. Predictive correlations are established based on the numerical data, which can be used to improve multiphase models and computational fluid dynamics methods.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Materials Science, Multidisciplinary
Jing Li, Shibo Kuang, Ruiping Zou, Aibing Yu
Summary: The study examines the effects of peripheral opening extent and shaft-injected hydrogen flow rate on the performance of a hydrogen blast furnace using computational fluid dynamics. Increasing the peripheral opening extent hinders the pre-reduction and pre-heating roles of shaft-injected hydrogen, but improves the CO indirect reduction rate. Increasing the shaft-injected hydrogen flow rate slows down the CO indirect reduction rate but enhances the H-2 indirect reduction rate.
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2022)
Article
Engineering, Chemical
Jieqing Gan, Zongyan Zhou, Aibing Yu, Dean Ellis, Reece Attwood, Wei Chen
Summary: Multibody dynamics (MBD) simulation is a useful tool for analyzing the kinematic function of multibody systems, while discrete element method (DEM) is commonly used for simulating particle flows and overall processes. Combining MBD and DEM methods through functional mock-up interface (FMI) co-simulation can predict equipment performance by considering both material and equipment behavior. This study utilized Dymola software to perform MBD and FMI co-simulations, developing MBD models for a hydraulic excavator system and GPU-based DEM models for excavator digging cycles. The results demonstrated the significant impact of solid materials on excavator movement.
Article
Engineering, Chemical
Lingling Liu, Shibo Kuang, Baoyu Guo, Aibing Yu
Summary: Optimization of ironmaking blast furnaces involves considering bottom and top operations. A recently developed integrated BF model and numerical orthogonal experiments are used to predict BF performance indicators and conduct multi-objective optimization and operatable zone identification.
CHEMIE INGENIEUR TECHNIK
(2023)
Article
Energy & Fuels
Lingling Liu, Shibo Kuang, Baoyu Guo, Aibing Yu
Summary: Oxygen blast furnace (OBF) is a low carbon ironmaking technology that suffers from high gas flame temperature. Injecting COREX off-gas (CROG) into the industrial BF can improve coal combustion and overall performance. The optimum injection rate of CROG helps achieve better fuel economy by enhancing indirect reduction and coke combustion.
Article
Engineering, Chemical
E. Dianyu, Haihan Fan, Zhongfang Su, Guangtai Xu, Ruiping Zou, Aibing Yu, Shibo Kuang
Summary: This paper proposes a hydrocyclone with a tapered inlet design to reduce the influence of particles misplacement. The new hydrocyclone integrates the advantages of both spiral inlet and tangential inlet. Through the analysis of separation performance, flow characteristics, and volume fraction distributions, an optimum design is identified. Compared to a standard hydrocyclone, the new design significantly improves tangential velocities, expands the locus of zero vertical velocity, and achieves more stable air core, symmetric radial and axial velocity distributions, as well as reduced eddy flow and short-circuit flow. This study offers a new perspective for improving hydrocyclone flows and performance.
Article
Chemistry, Multidisciplinary
Yang Zhang, Danjiao Zhao, Lei Cao, Lanlan Fan, Aiping Lin, Shufen Wang, Feng Gu, Aibing Yu
Summary: Flexible strain sensors are crucial for public healthcare as they can noninvasively monitor vital health signals. In this study, we developed structurally integrated 3D conductive networks-based flexible strain sensors using a droplet-based aerosol jet printing process and a transfer process. The sensors showed enhanced conduction and mechanical properties during stretching, and demonstrated effective responses to human movements such as finger bending and arm bending. Our findings highlight the potential of droplet-based aerosol jet printing for advanced flexible devices in optoelectronics and wearable electronics applications.
Article
Engineering, Chemical
Yifan Qin, Xiao Dong Chen, Aibing Yu, Jie Xiao
Summary: Mathematical modeling of mass transfer and absorption in the small intestine is challenging and requires a reliable and computationally efficient predictive model. This study derives an absorption model that considers the 3D intestinal inner wall structure and can be used in a 1D distributed model. Computational fluid dynamics simulations are used to quantify the mass-transfer coefficient. The model provides insights into the influence of intestinal morphology and motility on mass transfer and absorption.
Article
Energy & Fuels
E. Dianyu, Peng Zhou, Langyong Ji, Jiaxin Cui, Qiang Xu, Liejin Guo, Aibing Yu
Summary: In this study, a validated CFD-DEM model is used to investigate the dynamics, microstructure, and thermochemical behaviors in the raceway of a blast furnace with hydrogen injection operations. The effects of hydrogen injection concentration on raceway size, gas temperature, and components are studied.
Article
Pharmacology & Pharmacy
Hao Miao, Ke Huang, Yingwen Li, Renjie Li, Xudong Zhou, Jingyu Shi, Zhenbo Tong, Zhenhua Sun, Aibing Yu
Summary: In this study, the LNP formulation, atomization methods, and buffer system were optimized to maintain stability and efficiency of mRNA encapsulated LNPs during the atomization process. A suitable LNP formulation for atomization, AX4, DSPC, cholesterol, and DMG-PEG2K at a 35/16/46.5/2.5 (%) molar ratio, was identified based on in vitro experiments. Soft mist inhaler (SMI) was found to be the most suitable method for pulmonary delivery of mRNA encapsulated LNPs. The physico-chemical properties of the LNPs, such as size and entrapment efficiency, were further improved by adjusting the buffer system with trehalose. In vivo fluorescence imaging of mice demonstrated the potential of SMI with proper LNPs design and buffer system for inhaled mRNA-LNP therapies.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)