A method of forming a polysiloxane film on a substrate comprises polymerizing a siloxane monomer in a reaction chamber containing the substrate. The polymerization is catalyzed by a 30-60 W radio frequency plasma, the pressure in the reaction chamber during the polymerization is 100-400 mTorr, the residence time of the siloxane monomer in the reaction chamber is 5-120 minutes, the siloxane monomer is heated to 30-200° C. before entering the reaction chamber, and the polymerization is carried out at a temperature of 30-100° C.

Described herein are triboelectric energy generators that generally include a first flexible layer having a first electron donating material coated on at least a first surface and an electron accepting material coated over the first electron donating material, and a second flexible layer having a second electron donating material coated on at least a first surface. The first and second layers are positioned adjacent each other with their first surfaces facing inward toward each other and separated by a gap distance. An electric potential is generated upon movement between the first and second flexible layers, such as at least alternating contact and no-contact between the first and second flexible layers. The electron donating material may be provided by a particle-free conductive ink.

A curable organopolysiloxane composition having rheological properties suitable for precision application and fine pattern formation by a fine droplet coating apparatus such as a jet dispenser, along with a method for forming a pattern using the same, and an electronic component using the same, is provided herein. The curable organopolysiloxane composition is hydrosilylation reaction curable and can be precisely applied by a jet dispenser, etc. The composition has a viscosity at a strain speed of 1,000 (1/s) of 2.0 Pa.Math.s or less, while the viscosity at a strain speed of 0.1 (1/s) is a value 50.0-fold or more the viscosity at a strain speed of 1,000 (1/s). The content of silicon atom-bonded aromatic functional groups in the composition is within a range of from 1.0 to 6.0 mass %.

A method of preparing a composition for forming a release coating is disclosed. The method comprises preparing a reaction product comprising a polyorganohydrogensiloxane compound having cyclic SiH-functional branching groups interconnected by linear polydiorganosiloxane segments (the “branched cyclic polyorganohydrogensiloxane compound”), by combining together (A) a hydroxyl terminated polydiorganosiloxane and (B) a cyclic polyorganohydrogensiloxane, in the presence of (C) a boron containing Lewis acid and a solvent. A release coating composition including the reaction product comprising the branched cyclic polyorganohydrogensiloxane is also disclosed. The reaction product may be combined with or prepared in the presence of a polyorganohydrogensiloxane diluent and stripped of solvent to prepare the composition as a blend of the branched cyclic polyorganohydrogensiloxane and the polyorganohydrogensiloxane diluent for use in solventless-curable compositions.

Embodiments of the present disclosure provide a method of manufacturing a metal column using 3D printing technology. The method of manufacturing a metal column includes steps of: creasing a 3D-CAD design for printing the metal column; printing the metal column; pretreating the inner surface of a channel inside the metal column at low temperature; and coating the inner surface of the channel with a stationary phase so that the metal column is capable of separating a gas mixture into components.

The present invention aims at providing a coating film excellent in water repellency and oil repellency and further excellent in wear resistance, and a layered body comprising said coating film formed on a base material and a method for manufacturing the same. The present invention provides a coating film having at least an outermost surface layer (M) and a layer (K1) in contact with the layer (M), wherein a density of the layer (M) is 0.7 g/cm.sup.3 or more and less than 1.0 g/cm.sup.3, and a density of the layer (K1) is 1.0 g/cm.sup.3 or more and less than 2.2 g/cm.sup.3. The layer (M) preferably has a polydimethylsiloxane skeleton and/or a trialkylsilyl group.

A non-stick, durable, and long-serving coating in an inner surface of a tube that transports adhesive, a material of the coating includes polysiloxane. The polysiloxane includes a first monomer unit and a second monomer unit. The first monomer unit is at least one group selected from the group consisting of —O—Si—(R.sub.1)(R.sub.2)(R.sub.3), Si—(R.sub.1)(R.sub.2)(—O—).sub.2, and Si—(R.sub.1)(—O—).sub.3, the R.sub.1, R.sub.2 and R.sub.3 being independently selected from the group consisting of substituted alkyl and unsubstituted alkyl. The second monomer unit includes Si(—O—).sub.4. An injection needle and a method for manufacturing the coating on an injection needle is also provided.

A method of attaching heterogeneous materials comprising pretreating the surface of a metal plate with an aromatic compound containing a pyrogallol group to bind the pyrogallol group to the surface of the metal plate and coating the pyrogallol-group-bound metal plate with a polymer resin, thereby greatly improving the adhesive strength between the metal plate and the polymer resin.

A method for manufacturing a photoacoustic ultrasound generator includes forming an uncured prepolymer polydimethylsiloxane (PDMS) film on a substrate, spraying a solution of light-absorbing nano-particles onto a surface of the uncured PDMS film, and then permeating and diffusing the light-absorbing nano-particles into the uncured PDMS film; and curing the uncured PDMS film containing the light-absorbing nano-particles distributed therein to form a composite film of nano-particles and PDMS.

A substrate with a superhydrophobic coating, wherein the superhydrophobic coating includes a binding layer disposed on the substrate, and a hydrophobic layer disposed on the binding layer, wherein the hydrophobic layer includes perfluoroalkyl-functionalized silica nanoparticles, and a method of fabricating the substrate with the superhydrophobic coating. Various combinations of embodiments of the substrate with the superhydrophobic coating and the method of fabricating thereof are provided.