CAS 7440-05-3 Pd nanopowder Ultrafine Palladium as catalyst
Size:20-30nm Purity:99.95% CAS No:7440-05-3 ENINEC No.:231-115-6 Appearance:black Powder Shape:spherical
Size:20-30nm Purity:99.95% CAS No:7440-05-3 ENINEC No.:231-115-6 Appearance:black Powder Shape:spherical
We can supply different size products of niobium silicide powder according to client's requirements. Size:1-3um; Purity:99.5%;Shape:granular CAS No:12034-80-9;ENINEC No.:234-812-3
Ni2Si particle,99.5% purity,granular shape,is used for Microelectronic integrated circuit, nickel silicide film,etc. Size:1-10um; CAS No:12059-14-2;ENINEC No.:235-033-1
Osteoarthritis (OA) is a common disease characterized by subchondral fractures in its early stages, and there is currently no precise and specific treatment method available. On June 14, 2024, Advanced Materials reported that researchers synthesized a novel multifunctional scaffold using photopolymerized modified hyaluronic acid (GMHA) as a matrix in the presence of hydroxyapatite based hollow porous magnetic microspheres (HAp-Fe3O4), which is expected to solve this problem. The results of subchondral bone repair indicate that the carefully designed scaffold has the most suitable properties for subchondral bone repair. The porous structure of the magnetic microspheres inside the scaffold promotes the effective transfer of exogenous vascular endothelial growth factor (VEGF) loaded, and the Fe3O4 nanoparticles assembled in the microspheres promote osteogenic differentiation of bone marrow mesenchymal stem cells and accelerate new bone formation. These characteristics enable the scaffold to exhibit good subchondral bone repair properties and achieve high cartilage repair scores. The treatment results have shown that subchondral bone support significantly affects the process of upper cartilage repair. In addition, magnetic resonance imaging monitoring shows that Fe3O4 nanoparticles are gradually replaced by new bone during subchondral defect repair, allowing for non-invasive and radiation free evaluation to track the development of new bone during OA repair. This hydrogel scaffold achieves long-term in vivo tracking of subchondral bone and cartilage through its magnetic imaging effect, which meets the clinical needs. After further research and improvement, it is expected to be used for clinical applications. SAT NANO is a best supplier of iron oxide Fe3O4 nanoparticle in China, we can supply 10-20nm, 50nm, 100nm, 1-3um particle size, if you have any enquiry, please feel free to contact us at admin@satnano.com
Read MoreAccurate imaging of collateral circulation and ischemic penumbra is crucial for the diagnosis and treatment of acute ischemic stroke (AIS). Unfortunately, there is currently a lack of high-sensitivity and high-resolution in vivo imaging technology to meet this requirement. On July 4, 2024, Small reported that researchers had developed for the first time a contrast-enhanced magnetic sensitive weighted imaging (CE-SWI) technique, which is expected to meet the high-precision imaging needs. This technology utilizes Fe3O4 nanoparticles modified with dextran（ Fe3O4@Dextran NPs can perform high sensitivity and resolution imaging of AIS at 9.4T. Researchers synthesized it at room temperature using a simple co precipitation method Fe3O4@Dextran Nanoparticles have the advantages of small size (hydrodynamic size of 25.8nm), good solubility, high transverse relaxation (r2) (r2 reaches 51.3mM-1s-1 at 9.4T), and good biocompatibility. Fe3O4@Dextran Nano particle enhanced SWI can easily highlight cerebral blood vessels under a 9.4TMR scanner, with significantly improved contrast and a resolution of 0.1 millimeters, enabling clear identification of collateral circulation spaces in a rat model of middle cerebral artery occlusion (MCAO). In addition, Fe3O4@Dextran The SWI enhanced by NPs, through matching analysis with other multimodal magnetic resonance sequences, helps to accurately depict the ischemic core, collateral branches, and ischemic penumbra after AIS. The study's Fe3O4@Dextran Nanoparticle enhanced SWI provides a highly sensitive and high-resolution imaging tool for personalized feature description and precise treatment of stroke patients. SAT NANO is a best supplier of iron oxide Fe3O4 nanopowder supplier in China. we can offer 20nm, 50nm, 100nm, if you have any enquiry, please feel free to contact us at admin@satnano.com
Read MoreThe combination of flexibility and elasticity makes elastomers essential in a wide range of industries, including automobiles, construction, and consumer goods. In addition, they are becoming increasingly attractive in emerging fields such as microfluidics, soft robots, wearable electronics, and medical devices. Having sufficient mechanical strength is a prerequisite for any application. Therefore, resolving the seemingly contradictory attributes between softness and strength has always been an eternal pursuit. Natural spider silk has extraordinary strength, providing a constant source of inspiration for designing and synthesizing soft materials. Although its unique superstructure is difficult to replicate, the broader principles of designing layered structures provide useful tips for designing elastic materials with high mechanical strength. However, the above design principles cannot be directly applied to digital light processing (DLP) 3D printing based on photopolymerization. DLP printing needs fast light curing to achieve the necessary fast gel. Therefore, photo resins usually contain a considerable amount of multifunctional acrylic or methyl acrylic esters, which severely limits the freedom of molecular design. In addition, rapid curing can lead to uneven network formation and residual stress, which is also detrimental to mechanical properties. The potential for large-scale production of 3D printing is hindered by its low manufacturing efficiency (printing speed) and insufficient product quality (mechanical performance). The latest progress in ultra fast 3D printing of photopolymers has alleviated the issue of manufacturing efficiency, but the mechanical properties of typical printed polymers still lag far behind traditional processing techniques. Recently, Professor Xie Tao and Associate Researcher Wu Jingjun's team from the School of Chemical Engineering and Bioengineering at Zhejiang University published an article titled "3D printable elastomers with exceptional strength and toughness" in Nature. The study reported a 3D photo printed resin chemistry that produced elastomers with a tensile strength of 94.6 MPa and a toughness of 310.4 MJ m-3, far exceeding any 3D printed elastomer. Mechanically speaking, this is achieved by printing dynamic covalent bonds in polymers, allowing for network topology reconfiguration and facilitating the formation of hierarchical hydrogen bonds (especially amide hydrogen bonds), microphase separation, and interpenetrating structures, thereby synergistically promoting excellent mechanical properties. This work provides a brighter future for large-scale manufacturing using 3D printing. Figure 1: Chemical Design of 3D Photoprinted Elastomers © 2024 Springer Nature Figure 2. Mechanical properties of elastomers and their strengthening and toughening mechanisms © 2024 Springer Nature Figure 3. Elasticity and mechanical properties of elastomers © 2024 Springer Nature Figure 4: Stron...
Read MoreSilver nanoparticles are widely used as reagents for enhancing Raman scattering in SERS due to their stability and excellent enhancement properties. On March 29, 2024, Nano Convergence reported an economically efficient, easy to operate, and environmentally friendly method for in-situ manufacturing of SERS substrates. This method utilizes the self-assembly of bCP in a single droplet to form an organic thin film doped with silver nanoparticles (AgNPs) on the surface of paper for the first time. The researchers used micro liter level ultra-low components, and the entire self-assembly process occurred at the air/liquid interface of a single droplet deposited on a paper substrate. The research results indicate that bCP has a dual function. One is to promote the self-assembly of silver loaded thin films, and the other is to stabilize micro droplets. SEM analysis showed that with the help of self-assembled copolymer films, AgNPs with an average size of 47.5nm were formed. These morphological characteristics of AgNPs endow the paper surface with plasma characteristics. In addition, researchers investigated the sensitivity of the designed nano hybrid electro pulp paper substrate by recording the SERS curve of Rhodamine 6G (R6G) aqueous solution, with a LOD value of 48.9pM. As a proof of concept, the detection limits of nanohybrid plasma paper for two newly emerging pollutants, sildenafil (SD) and flubenzelin (FLBN), are 1.48nM and 3.45nM, respectively. The advantage of this new method is that it can bypass additional steps such as synthesizing colloidal nanoparticles when preparing ultra sensitive and reproducible SERS substrates, and is expected to develop into an on chip laboratory detection device. SAT NANO is a best supplier of silver nanoparticle in China, we can offer 20-30nm, 50nm, 100nm particle, if you have any enquiry, please contact us at admin@satnano.com
Read MoreSilver based materials have strong antibacterial properties, but their potential toxicity issues cannot be underestimated. Therefore, it is urgent to construct a safe and non resistant dual antibacterial system. On June 6, 2024, Food Hydroloids reported that researchers synthesized montmorillonite fixed AgNPs using tea polyphenols as reducing agents and montmorillonite as fixing agents（ AgNPs@MMT ）. Then, arginine was grafted onto the C2-NH2 group of the chitosan chain through N-acylation reaction to obtain arginine grafted chitosan (ACS), and finally AgNPs@MMT Prepare composite films by mixing ACS and gelatin G. The results showed that the work successfully prepared AgNPs with a size of 6.72 ± 4.66nm and ACS with a grafting degree of 0.153, and verified the relationship between ACS and FIC index AgNPs@MMT The synergistic antibacterial effect of. When ACS and AgNPs@MMT When the addition amount was reduced by 75% and 79.1% respectively, the antibacterial rate could still reach 99.9%. ACS/G/ AgNPs@MMT-2 Composite films have excellent mechanical properties, water vapor/UV barrier properties, antioxidant activity, degradation performance, and biosafety. In addition, due to synergistic effects, ACS/G/ AgNPs@MMT-2 The antibacterial rates of the film reached 99.24 ± 0.19% and 99.49 ± 0.40%, respectively, and due to the slow release of silver (only about 11.27% of silver was released within 20 days), the film has excellent long-term antibacterial performance. Finally, ACS/G/ AgNPs@MMT-2 Thin films can significantly improve the freshness of food and can be used as new antibacterial packaging materials. SAT NANO is a best supplier of silver nanoparticle in China, we can offer 20-30nm, 50nm, 100nm particle size, if you have any enquiry, please feel free to contact us at admin@satnano.com
Read MoreThe integration of nanotechnology and textile engineering has promoted the development and performance improvement of multifunctional intelligent materials in various application fields. On June 13, 2024, the Chemical Engineering Journal reported that researchers used a one-step method to anchor silver nanoparticles (AgNPs) onto multi walled carbon nanotubes (CNTs) and spray them onto non-woven fabrics to synthesize a multifunctional smart textile. The addition of carbon nanotubes not only enhances the conductivity of the fabric, but also improves the heating efficiency of the fabric, thereby improving its comfort in cold environments through electric heating. The addition of AgNPs enhances the photothermal function of the fabric. Under illumination of 100mW/cm, the photothermal conversion efficiency reaches 89.7%, and at a current of 1.0A, the temperature can reach 45.0 ° C. The study also found that the fabric has excellent piezoresistive and strain sensing capabilities, with a response time of only 359ms at a pressure of 3.25kPa. In addition, the fabric can also detect subtle physiological signals such as the wearer's pulse, finger bending, and spinal curvature, while also monitoring environmental humidity in real-time. This study not only promotes the development of intelligent textile technology, but also solves the unique challenges faced in the one-step preparation of CNTs and AgNPs on non-woven fabrics, thereby achieving the design and manufacturing of innovative materials with customized functions. These developments will have significant impacts on fields such as electric heating, photothermal effects, heat conduction, and heat treatment. SAT NANO is a best supplier of silver nanoparticle in China, we can offer 20-30nm, 50nm, 100nm particle, if you have any enquiry, please feel free to contact us at admin@satnano.com
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