Effects of large copper deficiency and surface modification on the photoluminescence CuInS2 nanocrystals were explored. The improved PL intensity due to enhanced internal defect-related emission. Surface deficient by simply refluxing with zinc acetate fatty acid resulted in more than 10 times improvement a blueshift spectra. uniformity size/shape distribution after was attributed origin shrinkage Stokes shift from ∼600 meV ∼300 Cu0.2InS2/ZnS nanocrystals. Furthermore, contribution lattice...

A reflective color filter based on a two-dimensional subwavelength grating is proposed. The has been designed by performing numerical simulations and fabricated 5×5 mm2 quartz glass using electron beam lithography. shows reflectance of 74% spectral width about 80 nm. Furthermore, it good angular tolerance, up to ±45°, for unpolarized incident light. By analyzing the distributions in band diagram, we found that high tolerance achieved due refractive index contrast structures.

Spherical inverse opal (IO) porous carbon was produced utilizing silica colloidal crystal spheres as templates. The spherical crystals were obtained through the self-assembly of monodisperse particles inside an emulsion droplet with confined geometry. templates inverted using a precursor, phenol-formaldehyde (PF) resol. We demonstrated two-step synthesis involving subsequent infiltration PF resol precursor into template and one-step solution containing dissolved In former case, sizes IO...

In this study, monodisperse polystyrene nanospheres were prepared by dispersion polymerization using alcohol as reaction medium to prepare colloidal clusters of the latex beads. Polyvinylpyrrolidone (PVP) and 2-(methacryloyloxy)ethyltrimethylammonium chloride (MTC) used stabilizer comonomer, respectively. The particle size could be controlled adjusting reactant compositions such amount stabilizer, water in mixture. monodispersity polymeric particles also changing with different alcohols...

In this study, Taylor-vortex reactor was adopted to synthesize silica nanoparticles from sodium silicate solution and carbon dioxide. The outstanding advantages of the have been demonstrated by comparing synthesis results Erlenmeyer reactor. showed that particles synthesized are smaller in size than SEM images histogram particle distribution obtained experiments clearly exhibited concentration SiO2 solution, reaction temperature, rotation speed cylinder significantly affected morphology as...

A mathematical model describing the controlled release of urea from rosin-coated granules has been developed on basis experimental results. The mechanism was also elucidated observation a single pellet. Two classes pattern were observed single-pellet experiments including (1) immediate and relatively rapid through few holes or many microscopic pores originally present in coating (2) little no for an extended period time followed by sudden, formed coating. It found that individual could not...

In this Article, we report on a packing scheme of monodisperse colloidal nanospheres by aerosol-assisted clustering. When an aqueous suspension was sprayed into aerosol droplets ultrasonic nebulizer, the were encapsulated in and evaporation water from at high temperatures led to packings nanospheres. The configurations minimized interparticle potential energy or second moment mass distribution depending number constituting Other types nonspherical microparticles hollow microclusters also...

In this study, hollow silica particles were fabricated by atomizing the dispersion of nanocolloids synthesized modified Stober method and self-organization spray drying technique. Rapid evaporation droplet containing nanoparticles resulted in formation microparticles at high temperature due to hydrodynamic instability droplet. Similar strategy was adopted for fabrication macroporous sol hetero-colloidal polystyrene nanospheres commercial nanoparticles. The morphologies porous observed...

Some intensive farmers tend to expect short-term beneficial effects by applying soil amendments, but inconsistent fertilization practices are often conducted, causing economic losses and environmental problems. This study aimed at investigating the application of different amendments on organic carbon (SOC) fractions, biogeochemical properties, crop performance for finding best land management approach using one-year field trial growing Chinese cabbages. filed experiment was conducted in...

Polymeric nanoparticles with sufficient solid concentration could be synthesized by emulsion polymerization without using surfactants. The polymeric nano-colloids surface functional groups were to obtain carboxylated polystyrene beads or amidine nanoparticles. Sodium styrene sulfonate was also adopted for the synthesis of sulfonated less than 50 nm in diameter KPS as an initiator. particles controlled adjusting reaction parameters such amount monomer, cross-linker, and temperature. range...

Facile synthesis of highly luminescent SiO2-based nanocomposites containing CdSe–ZnS quantum dots at extremely high concentration is reported.

In this study, polystyrene nanospheres were synthesized by dispersion polymerization using batch-type reactor for the self-organization with precursor materials inside emulsion droplets. Mechanical homogenization was applied emulsification of polymeric and titanium diisopropoxide bis (acetylacetonate) to produce macroporous titania particles evaporation-driven self-assembly. Similarly, spherical crystallites could be via triblock copolymer instead latex beads after successive calcination....

In this study, porous ceramic fibers were prepared by the sol–gel-assisted electro-spinning process using colloidal dispersion of complex fluids for application phtotocatalysts. First, polystyrene nanospheres synthesized polymerization as sacrificial templates fibers. Then, mixture polyvinylpyrrolidone and precursor with polymeric was spinning solution self-organized electro-spinning, followed calcination electrospun composite The morphologies could be controlled according to size amount...