Results 161 to 170 of about 3,302 (207)

pH-Responsive Hollow Polymeric Microspheres and Concentric Hollow Silica Microspheres from Silica−Polymer Core−Shell Microspheres

Langmuir, 2008
Nearly monodispersed silica-poly(methacrylic acid) (SiO 2-PMAA) core-shell microspheres were synthesized by distillation-precipitation polymerization from 3-(trimethoxysilyl)propylmethacrylate-silica (SiO 2-MPS) particle templates. SiO 2-PMAA-SiO 2 trilayer hybrid microspheres were subsequently prepared by coating of an outer layer of SiO 2 on the SiO ...
Li, G., Liu, G., Kang, E.T., Neoh, K.G., Yang, X.   +4 more
openaire   +2 more sources

Photons confined in hollow microspheres

Applied Physics Letters, 2001
Incorporation of CdSe quantum dots into a thin (<1 μm) surface shell of polymer microspheres (R∼2–4 μm) is achieved. The room-temperature emission spectra of single, hollow microcavities show several, spectrally well-separated cavity modes in the red-orange spectral range which have been assigned to high-Q whispering gallery modes (WGM) with ...
M. V. Artemyev, U. Woggon, R. Wannemacher   +2 more
openaire   +1 more source

Synthetic hollow aluminophosphate microspheres**

Advanced Materials, 1995
Hollow aluminophosphate microspheres, based on mesolamellar surfactant bilayer aluminophosphate composite material, have been synthesized in polyethylene glycol by an alkylamine surfactant based method. The surface of the spheres displays patterns of surface impressions as well as fine morphological detail withi the spherical features.
Scott Oliver, Geoffrey A. Ozin, Neil Coombs   +2 more
openaire   +1 more source

From Zn microspheres to hollow ZnO microspheres: A simple route to the growth of large scale metallic Zn microspheres and hollow ZnO microspheres

Physica E: Low-dimensional Systems and Nanostructures, 2006
Abstract Large scale metallic Zn microspheres and hollow ZnO microspheres are synthesized by thermal evaporation and vapor transport by heating a ZnO/graphite mixture at 1000 °C. Firstly, metallic Zn microspheres are fabricated with diameters in the range of 1–10 μm.
Aurangzeb Khan, Wojciech M. Jadwisienczak, Martin E. Kordesch   +2 more
openaire   +1 more source

Hollow silica microspheres as robust immobilization carriers

Bioorganic Chemistry, 2019
Hollow silica microspheres provide an ideal solid support for enzyme immobilization. We tested one of the newest development, namely MATSPHERES®, a silica openwork material as a carrier for the covalent immobilization of enzymes used to synthesize bioactive compounds.
Wojciech Snoch, Mateusz Tataruch, Olga Zastawny, Ewelina Cichoń, Mathilde Gosselin, Hubert Cabana, Maciej Guzik   +6 more
openaire   +2 more sources

Structure of hollow polystyrene microspheres: An SEM study

Journal of Microencapsulation, 1989
Hollow polystyrene microspheres have been prepared by a modified interfacial polymer deposition technique. The hollow microspheres were characterized using scanning electron microscopy. The effects of polymer concentration and the quantity of the internal phase material (methanol) used on the microsphere size and their wall thickness were studied ...
S, Ganguly, K V, Rao, V K, Mohan
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Interfacial synthesis of hollow microspheres of mesostructured silica

Chemical Communications, 2001
Hollow microspheres with ordered mesoporous walls are synthesised under ambient conditions by a simple procedure involving dilution and neutralisation of an aqueous tetraethoxysilane/cetyltrimethylammonium bromide reaction mixture.
Fowler, CE, Khushalani, D, Mann, S
openaire   +2 more sources

Hydrothermal synthesis of SnO2 hollow microspheres

Materials Letters, 2005
Abstract SnO 2 hollow microspheres have been synthesized by a hydrothermal method. X-ray powder diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM) were used to characterize such hollow microspheres. SEM image shows that SnO 2 microspheres with diameters of 0.5–1 μm are composed of SnO 2 nanoparticles with about 15 nm in ...
Fanglin Du, Zhiyan Guo, Guicun Li
openaire   +1 more source

Hollow Microspheres from Polyethylene Terephthalate

Fusion Technology, 1997
We discuss the technology developed at the Lebedev Physical Institute for the manufacture of hollow microspheres polyethylene terephthalate (PETP).
Valeriy M. Dorogotovtsev, Alexander A. Akunets, Yuriy A. Merkuliev   +2 more
openaire   +1 more source

Recent progress on the fabrication of hollow microspheres

Materials Science and Engineering: A, 2007
Hollow microspheres represent a special class of materials, on which intense interest has been paid in the fields of material science, medicine, chemistry and chromatography. Several methods, including templating method, emulsion processing, high temperature smelting and layer-by-layer self-assembly technique, have been used to produce this kind of ...
Ai-Juan Wang, Yu-Peng Lu, Rui-Xue Sun
openaire   +1 more source