Nanoparticles of silver halides are widely used to study the quantum confinement effects in indirect band gap semiconductors [1]. These particles are typically prepared by carrying out a precipitation reaction in the water pools of w/o microemulsions, or reverse micelles, by mixing two identical microemulsions containing aqueous solutions of AgNO3 and KBr, or other halides [2]. The mixing of tw...

In the Belousov-Zhabotinsky (BZ) reaction carried out in a reverse microemulsion with Aerosol OT as surfactant, the existence of two different sizes of droplets containing the BZ reactants leads to the emergence of segmented (dashed) waves. This bimodal distribution of sizes is stabilized by adding small amounts of the homopolymer poly(ethylene oxide) (PEO). Addition of PEO lengthens the period...

High surface area alumina-supported cobalt oxides and carbides were synthesized using a one-pot reverse microemulsion method (followed by carburization for carbides). Two synthesis variations gave fine powders having specific areas ranging from 178−272 m2/g, consisting of oxide or carbide nanoparticles (5−10 nm) dispersed on γ-alumina (10−13 wt% loadings). The resulted materials tested CO2 hydr...

In this paper we investigate the receipt of cadmium sulfide nanoparticles in the microemulsion system stabilized by nonionic surfactants, and the effect of the volume of microemulsion droplets and supersaturation on the size of the particles formed CdS. The photoluminescence spectrum microemulsion system containing nanoparticles of CdS, is shifted to shorter wavelengths of the spectrum and the ...

The finite-wavelength instability gives rise to a new type of wave in reaction-diffusion systems: packet waves, which propagate only within a wave packet, are found in experiments on the Belousov-Zhabotinsky reaction dispersed in water-in-oil AOT microemulsion (BZ-AOT) as well as in model simulations. Inwardly moving packet waves with negative curvature occur in experiments and in a model of th...

The objective of the present study was to design and develop a microemulsion based transungual drug delivery formulation of ciclopirox olamine using colloidal carrier for treatment of onychomycosis. Capmul PG8 was selected as oil phase due to the high solubility of ciclopirox in it as compared to other oils and Cremophor EL and Transcutol P were used as surfactant and cosurfactant respectively....

BACKGROUND Microemulsion propofol produces more frequent and severe pain upon injection than lipid emulsion propofol. This study examined the analgesic effect of lidocaine-premixed microemulsion propofol in patients pretreated with remifentanil. The induction of anesthesia with this combination was compared with microemulsion propofol accompanied with either remifentanil or lidocaine. METHODS...

The polymerase chain reaction (PCR) has been widely used for diagnosis of infectious diseases of domestic animals. Rapid detection of respiratory pathogens of cattle is useful for making therapeutic decisions. Therefore, we developed a new genetic-based method called droplet-real-time PCR, which can detect bovine respiratory syncytial virus (BRSV) within 10 min. Our droplet-real-time PCR marked...

Calcium carbonate nano-particles were synthesized by a reverse micro-emulsion method at room temperature with Tween® 80 and Span® 80 as co-surfactants. The nano-particles synthesized were surface modified by stearic acid. An important operating variable in the Span 80-Tween 80/toluene/water reverse micro-emulsion system, the ω-value (water/surfactant molar ratio) was i...

Miniemulsion polymerization is a new way to synthesize polymer nanoparticles in the size range of 40–500 nm with high morphological uniformity and chemical flexibility. Focusing on the very small particles, miniemulsion polymerization already steps into the range of microemulsion polymerization, however, with a minimum expense of surfactant which is up to a factor of 10 lower than in microemuls...