نتایج جستجو برای: monodispersity
تعداد نتایج: 252 فیلتر نتایج به سال:
In recent years, there has been increasing interest in developing a multifunctional nanoscale platform for cancer monitoring and chemotherapy. However, there is still a big challenge for current clinic contrast agents to improve their poor tumor selectivity and response. Herein, we report a new kind of Gd complex and folate-coated redox-sensitive lipid-polymer hybrid nanoparticle (Gd-FLPNP) for...
Chemically synthesized superparamagnetic nanoparticles are widely used in biology and medicine for applications that include biomolecule purifications and cell separations, magnetic resonance imaging (MRI) contrast agents, and biomagnetic sensing. Magnetic nanoparticles with high moments are often desired to produce large signals for biomagnetic sensing or to avoid restrictive requirements for ...
Microfluidic systems with splitting structures are excellent for increasing emulsion production. However, traditional two-dimensional (2D) lithographic systems require complex modification of the microchannel surfaces and achieve only 2D splitting of the droplets. Herein, we present new glass capillary microfluidic devices that perform three-dimensional (3D) splitting of droplets. These devices...
Designing strategies to reach monodispersity in fabrication of semiconductor nanowire ensembles is essential for numerous applications. When Ga-catalyzed GaAs nanowire arrays are grown by molecular beam epitaxy with help of droplet-engineering, we observe a significant narrowing of the diameter distribution of the final nanowire array with respect to the size distribution of the initial Ga drop...
Spontaneous emulsification through microchannels, in which droplets are formed due to Laplace pressure difference, is a relatively new technique for preparing monodisperse emulsions. The technique is extremely suited for products containing temperature and shear sensitive ingredients and for products that require high monodispersity; however, industrial application is still not possible due to ...
In our present work, magnetic cobalt ferrite (CoFe2O4) nanoparticles have been successfully synthesised by thermal decomposition of Fe(III) and Co(II) acetylacetonate compounds in organic solvents in the presence of oleic acid (OA)/ oleylamine (OLA) as surfactants and 1,2-hexadecanediol (HDD) or octadecanol (OCD-ol) as an accelerating agent. As a result, CoFe2O4 nanoparticles of different shape...
Carbon graphitic structures that differ in morphology, graphiticity and specific surface area were used as support for platinum for Oxygen Reduction Reaction (ORR) in low temperature fuel cells. Graphitic supports were first non-covalently functionalized with pyrene carboxylic acid (PCA) and, subsequently, platinum nanoparticles were nucleated on the surface following procedures found in previo...
The roles of CTAB and Ag + have been discovered given us a deeper understanding the seed-mediated method in gold nanorods synthesis. Former work used binary surfactants NaOL (sodium oleate) to greatly improve dimensional tunability monodispersity nanorods. However, they only few concentration combinations surfactants, influence under this has not systematically studied. In work, we carried out ...
The unclear structures and polydispersity of metal nanoparticles (NPs) seriously hamper the identification active sites construction structure-reactivity relationships. Fortunately, ligand-protected nanoclusters (NCs) with atomically precise monodispersity have become an ideal candidate for understanding well-defined correlations between structure catalytic property at atomic level. programmabl...
Five samples of liquid dispersions colloidal gold nanorods having various aspect ratios have been studied using light scattering methods. Transmission electron microscopy has employed as a reference method. Advantages and drawbacks dynamic nanoparticle tracking analysis methods for study geometrical parameters concentration, sample monodispersity degree detection large particle aggregations qua...
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