Home  About us  Contact
 

Micelle Method (micelle + method)

Distribution by Scientific Domains
Physics and Astronomy75%

Kinds of Micelle Method

  • reverse micelle method
    		•

    Selected Abstracts

    Fabrication of high-performance, gradient-refractive-index plastic rods with surfmer-cluster-stabilized nanoparticles

    JOURNAL OF POLYMER SCIENCE (IN TWO SECTIONS), Issue 20 2006
    Jui-Hsiang Liu
    Abstract A novel method was developed with surfmer-cluster-stabilized silver nanoparticles to prepare high-performance, gradient-refractive-index (GRIN) plastic rods based on methyl methacrylate. To fabricate the GRIN plastic rods, a novel polymerizable surfactant (surfmer) of 4-(11-acryloxyundecyloxy)benzoic acid (AUBA) was synthesized. Silver nanoparticles were prepared with a reverse micelle method in the presence of the novel surfmer. During the fabrication of the silver nanoparticles, the sodium salt of AUBA was formed. GRIN plastic rods were fabricated through centrifugal polymerization and then were heat-treated at 100 °C under 0.1 Torr for 24 h to remove residual monomers and water. The distribution of the surfmer-cluster-stabilized nanoparticles inside the plastic rods was studied with transmission electron microscopy (TEM). The real-image transmission through the fabricated rods was also confirmed. The results obtained in this investigation suggested that the control of the distribution of surfmer-cluster-stabilized nanoparticles could be used to fabricate GRIN rods. Furthermore, the existence of the crosslink-like surfmers increased the thermal stability of the plastic rods. The GRIN distribution of the rods was established by the dispersion of nanoparticles inside the plastic rods through TEM analysis, refractive-index analysis, and real-image transmission. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 5933,5942, 2006 [source]

    Raman scattering spectra of CdS nanocrystals fabricated by a reverse micelle method

    PHYSICA STATUS SOLIDI (C) - CURRENT TOPICS IN SOLID STATE PHYSICS, Issue 1 2009
    Aishi Yamamoto
    Abstract Raman scattering (RS) spectra of CdS nanocrystals (NCs) fabricated by a reverse micelle method were studied and were analysed using a phonon confinement model. One broad and red-shifted RS peak due to the LO phonon confined in CdS NCs was observed. The RS spectra were calculated using a phonon confinement model with the NC sizes estimated from the optical absorption spectra. The calculated RS spectra as suming that the NCs have the wurtzite structure reproduce the experimental spectra better than those assuming zincblende structure, which is consistent with the result of transmission electron microscope (TEM) observations. Our finding indicates that the crystal structure of the nanocrystal can be determined by the analyses of Raman scattering spectral shape. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]

    Synthesis and properties of ,-Fe2O3 nanorods

    CRYSTAL RESEARCH AND TECHNOLOGY, Issue 9 2010
    R. Ramesh
    Abstract We report synthesis of ,-Fe2O3 (hematite) nanorods by reverse micelles method using cetyltrimethyl ammonium bromide (CTAB) as surfactant and calcined at 300 °C. The calcined ,-Fe2O3 nanorods were characterized by X-ray diffraction (XRD), high-resolution scanning electron microscopy (HRSEM), transmission electron microscopy (TEM), energy dispersive spectrometer (EDS), fourier transform infrared spectroscopy (FTIR) and vibrating sample magnetometer (VSM). The result showed that the ,-Fe2O3 nanorods were hexagonal structure. The nanorods have diameter of 30-50 nm and length of 120-150 nm. The weak ferromagnetic behavior was observed with saturation magnetization = 0.6 emu/g, coercive force = 25 Oe and remanant magnetization = 0.03 emu/g. (© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]