This is our latest selection of worldwide publications and patents in english on Nanotechnologies, between many scientific online journals, classified and focused on nanotechnology, nanoparticles, nanomaterials, nanocomposites, quantum dots, carbon nanotubes, nanoscale engineering, nanofabrication and nanoelectronic.
Novel Bioactive Resin Coating with Calcium Phosphate Nanoparticles for Antibacterial and Remineralization Abilities to Combat Tooth Root Caries
Published on 2025-03-11 by Nader Almutairi, Abdullah Alhussein, Mohammad Alenizy, Ibrahim Ba-Armah, Heba Alqarni, Thomas W. Oates, Radi Masri, Gary D. Hack, Jirun Sun, Michael D. Weir, Hockin H. K. Xu @MDPI
Abstract: Tooth root caries account for 10.1% of all dental caries in the USA. This study developed a multifunctional resin coating with calcium (Ca) and phosphate (P) ion release and antibacterial properties to combat root caries. The effects of nano-sized amorphous calcium phosphate (NACP) and dimethylaminohexadecyl methacrylate (DMAHDM) on mechanical, physical, and antibacterial properties against Streptococcus mutans, and cytotoxicity on dental pulp stem cells and gingival fibroblasts were evaluated. [...]
Our summary: Novel resin coating with calcium phosphate nanoparticles developed to combat tooth root caries, with high ion release and antibacterial properties, low cytotoxicity, and strong mechanical integrity.
Bioactive Resin Coating, Calcium Phosphate Nanoparticles, Antibacterial, Remineralization
Publication
Green Synthesis, Characterization, and Optimization of Chitosan Nanoparticles Using Blumea balsamifera Extract
Published on 2025-03-10 by Johann Dominic A. Villarta, Fernan Joseph C. Paylago, Janne Camille H. Poldo, Jalen Stephen R. Santos, Tricia Anne Marie M. Escordial, Charlimagne M. Montealegre @MDPI
Abstract: Chitosan nanoparticles are nontoxic polymers with diverse biomedical applications. Traditional nanoparticle synthesis often involves harmful chemicals or results in reduced desirable properties, sparking interest in green synthesis methods for nanoparticle production. Utilizing plant-based phytochemicals as reducing and capping agents offers advantages like biocompatibility, sustainability, and safety. This study explored Blumea balsamifera leaf extract for chitosan nanoparticle (CNP) synthesis.[...]
Our summary: This study explores the use of Blumea balsamifera extract for the green synthesis of chitosan nanoparticles, which are characterized using DLS and SEM. Optimization of the synthesis process is achieved through UV-Vis analysis and FCCCD, with promising antibacterial applications against E. coli.
Green Synthesis, Characterization, Optimization, Chitosan Nanoparticles
Publication
Unlocking the Potential of Na2Ti3O7-C Hollow Microspheres in Sodium-Ion Batteries via Template-Free Synthesis
Published on 2025-03-10 by Yong-Gang Sun, Yu Hu, Li Dong, Ting-Ting Zhou, Xiang-Yu Qian, Fa-Jia Zhang, Jia-Qi Shen, Zhi-Yang Shan, Li-Ping Yang, Xi-Jie Lin @MDPI
Abstract: Layered sodium trititanate (Na2Ti3O7) is a promising anode material for sodium-ion batteries due to its suitable charge/discharge plateaus, cost-effectiveness, and eco-friendliness. However, its slow Na+ diffusion kinetics, poor electron conductivity, and instability during cycling pose significant challenges for practical applications. To address these issues, we developed a template-free method to synthesize Na2Ti3O7-C hollow microspheres. The synthesis began with polymerization-induced colloi[...]
Our summary: Unlocking potential of Na2Ti3O7-C hollow microspheres in sodium-ion batteries through template-free synthesis, enhancing cycling performance and rate capability, new strategy for high-performance anodes.
Na2Ti3O7-C, hollow microspheres, template-free synthesis, sodium-ion batteries
Publication
Bridging the Near- and Mid-Infrared
Published on 2025-03-10 by Zian Cai, Wenyao Zhang, Qi Kang, Hongfu Huang, Xin Xiang, Shunbin Lu, Qiao Wen @MDPI
Abstract: Quasi-one-dimensional (quasi-1D) transition metal chalcogenides (TMCs), a subclass of low-dimensional materials, have attracted significant attention due to their unique optical and electronic properties, making them promising candidates for nonlinear photonics. In this work, NbTe4, a quasi-1D transition metal tetrachalcogenide, was synthesized and employed for the first time as a broadband saturable absorber (SA) for pulsed laser applications. The nonlinear optical (NLO) properties of NbTe4 wer[...]
Our summary: NbTe4 synthesized as broadband saturable absorber for pulsed laser applications, characterized for NLO properties at different wavelengths, successfully used for PQS and mode-locked operation in fiber lasers.
transition metal chalcogenides, nonlinear photonics, saturable absorber, quasi-1D
Publication
Flavonoids as Promising Natural Compounds for Combating Bacterial Infections
Published on 2025-03-10 by Ying Liu, Jiajia Zhu, Zhenyi Liu, Yan Zhi, Chen Mei, Hongjun Wang @MDPI
Abstract: The increasing emergence and dissemination of multidrug-resistant (MDR) bacterial pathogens have intensified the need for new antibiotics and alternative therapeutic strategies. Flavonoids, a diverse group of bioactive natural compounds found in plants, have shown significant promise as antibacterial agents. Flavonoids inhibit bacterial growth through various mechanisms, including disruption of cell wall synthesis, prevention of biofilm formation, disruption of cell membrane integrity, and inhib[...]
Our summary: Flavonoids show promise as antibacterial agents by inhibiting bacterial growth through various mechanisms. Recent advances in drug delivery systems and formulation techniques aim to improve their bioavailability and therapeutic efficacy. Continued research on flavonoids is crucial for combating multidrug-resistant bacterial infections.
Flavonoids, Natural Compounds, Bacterial Infections, Antibacterial Agents
Publication
The Chemical Deformation of a Thermally Cured Polyimide Film Surface into Neutral 1,2,4,5-Benzentetracarbonyliron and 4,4′-Oxydianiline to Remarkably Enhance the Chemical–Mechanical Planarization Polishing Rate
Published on 2025-03-10 by Man-Hyup Han, Hyun-Sung Koh, Il-Haeng Heo, Myung-Hoe Kim, Pil-Su Kim, Min-Uk Jeon, Min-Ji Kim, Woo-Hyun Jin, Kyoo-Chul Cho, Jinsub Park, Jea-Gun Park @MDPI
Abstract: The rapid advancement of 3D packaging technology has emerged as a key solution to overcome the scaling-down limitation of advanced memory and logic devices. Redistribution layer (RDL) fabrication, a critical process in 3D packaging, requires the use of polyimide (PI) films with thicknesses in the micrometer range. However, these polyimide films present surface topography variations in the range of hundreds of nanometers, necessitating chemical–mechanical planarization (CMP) to achi[...]
Our summary: Rapid advancement of 3D packaging technology requires polyimide films with nanometer-level surface flatness for RDL fabrication. Introducing Fe(NO3)3 into CMP slurries deforms the polyimide film surface, enhancing the chemical-mechanical polishing rate. Optimal Fe(NO3)3 concentration for maximum film removal rate is 0.05 wt%.
polyimide film, chemical-mechanical planarization, Fe(NO3)3, polishing rate
Publication
Diffractive optical element, method for manufacturing same, hologram using same, vr/ar device using same, and hud using same
Patent published on the 2025-03-06 in WO under Ref WO2025048334 by KOREA UNIV RESEARCH AND BUSINESS FOUNDATION [KR] (Lee Seung Woo [kr], Lim Yong Jun [kr])
Abstract: Provided is a method for manufacturing a diffractive optical element. The method for manufacturing a diffractive optical element may comprise: a step for preparing an imprinting stamp including a stamp pattern in which peaks and valleys having a curved shape are alternately and repeatedly arranged; a step for preparing a base structure in which a coating layer including a photocurable polymer and nanoparticles is formed on a base substrate; and a step for applying pressure to the coating layer o[...]
Our summary: Method for manufacturing diffractive optical element includes preparing imprinting stamp with curved peaks and valleys, coating base structure with polymer and nanoparticles, applying pressure with stamp to form base pattern.
diffractive optical element, manufacturing method, hologram, AR/VR device
Patent
Dual immunodiagnostic chip
Patent published on the 2025-03-06 in WO under Ref WO2025048611 by KOREA BASIC SCIENCE INST [KR] (Nam Ki-hwan [kr], Jeong Bong Jin [kr], Kim Hye Mi [kr], Kim Gyuri [kr], Choi Jong Soon [kr])
Abstract: The present invention provides a dual immunodiagnostic chip. The dual immunodiagnostic chip can be used to observe changes in color and electrical signal, through a single sample injection. Thus, the presence or absence of a target material can be rapidly and accurately detected. The dual immunodiagnostic chip of the present invention comprises: an injection unit into which a composite nanostructure in which a sample, nanoparticles, and a primary bioreceptor are conjugated; a reaction unit coate[...]
Our summary: Dual immunodiagnostic chip for rapid and accurate detection of target materials, observing changes in color and electrical signal through single sample injection, comprising injection unit, reaction unit, electrode unit, and microfluidic channel unit.
immunodiagnostic, chip, color, electrical signal
Patent
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