Growth of mesoporous materials within colloidal crystal films by spin-coating

Article Abstract:

A combination of colloidal crystal planarization, stabilization and novel infiltration techniques is used to build a bimodal porous silica film showing order at both the micron and the nanometer length scale. An infiltration method based on the spin-coating of the mesophase precursor onto a three-dimensional polystyrene colloidal crystal film allows a nanometer control tuning of the filing fraction of the mesoporous phase while preserving the optical quality of the template.

Scanning electron microscopes, Infiltration (Hydrology)

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Sub-nanometer control of the interlayer spacing in thin films of intercalated rodlike conjugated molecules

Article Abstract:

A practical method to fabricate mixed layer containing two conjugated moieties with vastly different electronic properties is described. The process involves the vacuum co-deposition of a rigid conjugated molecule with an alkylated rodlike molecule which could be used to study intermolecular coupling between conjugated layer stacks.

X-rays, X-ray diffraction, Optical properties, Atomic force microscopy, Alkyl groups

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Studying the growth of cubic boron nitride on amorphous tetrahedral carbon interlayers

Article Abstract:

The growth of cubic boron nitride (cBN) films on bare silicon and amorphous tetrahedral carbon layers prepared on silicon substrates was studied. The cBN films were prepared by radio frequency magnetron sputter deposition at approximately 870 degree Celsius.

Boron nitride, Electrophoretic deposition

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