High durable mold fabricated with hot-embossing a sol-gel derived organically modified silicate film

2005 ◽  
Author(s):  
Eri Ito ◽  
Kenjiro Hasui ◽  
Masahiro Tomiki ◽  
Naomichi Okamoto
Keyword(s):  
Sol Gel ◽  
Hot Embossing ◽  
Silicate Film ◽  
Organically Modified

Microstructural characterization of sol-gel coating on PET films

1994 ◽  
Vol 52 ◽  
pp. 886-887
Author(s):  
R. T. Chen ◽  
R.A. Norwood
Keyword(s):  
Ion Beam ◽  
Sol Gel ◽  
Industrial Applications ◽  
Hard Coatings ◽  
Nanometer Scale ◽  
Ion Beam Sputtering ◽  
Process Technology ◽  
Refractive Index Measurement ◽  
Organically Modified ◽  
Pet Films

Sol-gel processing has been used to control the structure of a material on a nanometer scale in preparing advanced ceramics and glasses. Film coating using the sol-gel process was also found to be a viable process technology in applications such as optical, porous, antireflection and hard coatings. In this study, organically modified silicate (Ormosil) coatings are applied to PET films for various industrial applications. Sol-gel materials are known to exhibit nanometer scale structures which havepreviously been characterized by small-angle X-ray scattering (SAXS), neutron scattering and light scattering. Imaging of the ultrafine sol-gel structures has also been performed using an ultrahigh resolution replica/TEM technique. The objective of this study was to evaluate the ultrafine structures inthe sol gel coatings using a direct imaging technique: atomic force microscopy (AFM). In addition, correlation of microstructures with processing parameters, coating density and other physical properties will be discussed.The materials evaluated are organically modified silicate coatings on PET film substrates. Refractive index measurement by the prism coupling method was used to assess density of the sol-gel coating.AFM imaging was performed on a Nanoscope III AFM (by Digital Instruments) using constant force mode. Solgel coating samples coated with a thin layer of Ft (by ion beam sputtering) were also examined by STM in order to confirm the structures observed in the contact type AFM. In addition, to compare the previous results, sol-gel powder samples were also prepared by ultrasonication followed by Pt/Au shadowing and examined using a JEOL 100CX TEM.

Preparation of Porous Organically-Modified Silicate Hybrids for Cell Culture Matrix

2007 ◽  
Vol 330-332 ◽  
pp. 1177-1180 ◽  
Author(s):  
Kanji Tsuru ◽  
Satoshi Hayakawa ◽  
Yuki Shirosaki ◽  
T. Okayama ◽  
K. Kataoka ◽  
...  
Keyword(s):  
Cell Culture ◽  
Mammalian Cells ◽  
Pore Diameter ◽  
Sol Gel ◽  
Three Dimensional ◽  
Culture Methods ◽  
Organically Modified ◽  
Dimensional Cell

Porous & rubbery organic-inorganic hybrids were synthesized from tetraethoxysilane (TEOS) and polydimethylsiloxane (PDMS) through a sol-gel route using sieved sucrose granules as a porogen. The porous hybrids with a high content of PDMS behaved like polymer sponge. The porosity was over 90% irrespective of the hybrid composition and the pore diameter ranged from 100 to 500 μm. In the three-dimensional cell culture, mammalian cells were well cultured in the porous hybrids. The present results indicate that the hybrids may be a promising scaffold for developing such functional culture methods.

scholarly journals Inorganic-Organic Composites (Ormocers) as Structured Layers for Microelectronics

1990 ◽  
Vol 180 ◽  
Author(s):  
Michael Popall ◽  
Henning Meyer ◽  
Helmut Schmidt ◽  
Jochen Schulz
Keyword(s):  
System Integration ◽  
Signal Transmission ◽  
Sol Gel ◽  
Unsaturated Hydrocarbon ◽  
Direct Laser ◽  
Organically Modified ◽  
Integration Techniques ◽  
Edge Quality ◽  
Low Permittivity ◽  
High Bulk

ABSTRACTEnhanced integration, faster signal transmission and reduced size of mounting devices in components for microelectronics requires new patternable materials. Inorganic-organic copolymers (ORMOCERs = ORganically MOdified CERamics), prepared by sol-gel techniques have been developed for interconnection technologies in microelectronics. Photopolymerization is enabled by unsaturated hydrocarbon or epoxide substituents and UV-sensitive initiators. Using a frequency doubled Argonion laser at 257 nm for direct laser writing, patterned layers with high edge quality have been realized. In combination with high breakthrough voltages, low permittivity constants and high bulk resistivities they open interesting aspects for very large system integration techniques (VLSI).

Amorphous Calcium Silicate Coating on Metallic Titanium

2006 ◽  
Vol 11-12 ◽  
pp. 235-238
Author(s):  
El-Sayed Ghaith ◽  
Toshihiro Kasuga ◽  
Masayuki Nogami
Keyword(s):  
Calcium Silicate ◽  
Sol Gel ◽  
Titanium Substrate ◽  
Metallic Titanium ◽  
Silicate Coating ◽  
Tissue Replacement ◽  
Biomimetic Apatite ◽  
Silicate Film ◽  
Deposited Film ◽  
Deposited Films

Amorphous calcium silicate coating on a metallic titanium substrate for hard tissue replacement was prepared by a sol-gel method. Calcium silicate film was deposited on a titanium substrate by a spin-coating technique and subsequently heated at 500°C for 2 h in air. The deposited film, which was dense, had thickness of about 800 nm and strongly adhered to the substrate. Biomimetic apatite-forming ability of the deposited films was examined by soaking in simulated body fluid (SBF). Thin film X-ray diffractometry and scanning electron microscopy showed the formation of apatite on the surface after 10 days of soaking in SBF.

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