A silver-coated resin particle having a resin particle and a silver coating layer provided on a surface of the resin particle, in which an average value of a 10% compressive elastic modulus is in a range of 500 MPa or more and 15,000 MPa or less and a variation coefficient of the 10% compressive elastic modulus is 30% or less.

A modified resin base material that includes a resin material having a base at a surface thereof, and a plating catalytic metal on the surface of the resin material, wherein a combination of the plating catalytic metal and the base is at least one of the following Lewis acid-base combinations according to a HSAB principle: a hard acid and a hard base or an intermediate base, an intermediate acid and a hard base, an intermediate base or a soft base, or a soft acid and an intermediate base or a soft base.

A method for manufacturing a wiring board is capable of forming a metal layer included in a wiring layer to have an even thickness. The method includes preparing a conductive first underlayer on a surface of a substrate; a conductive second underlayer on a surface of the first underlayer; and a seed layer on a surface of the second underlayer and containing metal. The method disposes a solid electrolyte membrane between an anode and the seed layer as a cathode; applies voltage between the anode and the first underlayer to form a metal layer on the surface of the seed layer; removes an exposed portion of the second underlayer without the seed layer from the substrate; and removes an exposed portion of the first underlayer without the seed layer from the substrate. The first underlayer is a material having a higher electrical conductivity than that of the second underlayer.

Metal coated resin particles include: spherical core resin particles; and a metal coated layer provided on a surface of each of the core resin particles, in which the metal coated layer consists of: a first silver layer formed on the surface of each of the core resin particles; a tin intermediate layer consisting of one or more of metallic tin and/or tin compounds selected from the group consisting of tin (Sn), tin oxide (Sn.sub.xO.sub.y), and tin hydroxide (Sn.sub.x(OH).sub.y) formed on a surface of the first silver layer (where, 0.1<x<4, 0.1<y<5); and a second silver layer formed on a surface of the tin intermediate layer.

It is provided a method for manufacturing a metal coated substrate by forming a metal coating on a surface of a substrate, comprising: immersing the substrate in a palladium/tin colloidal solution; immersing the substrate in an acid solution; carrying out electroless metal plating in order to obtain a continuous film-coated substrate, and subjecting the metal coating to a cryogenic treatment step in order to make it permeable to electromagnetic waves, the cryogenic treatment step being carried out by cooling the substrate with liquid nitrogen. It is also provided a metal coated substrate obtainable by the mentioned method and an article of manufacture made of the metal coated substrate.

A process for the large scale manufacturing of vertically standing hybrid nanometer-scale structures of different geometries, including fractal architecture made of flexible materials, on a flexible substrate including textiles is disclosed. The nanometer-scale structures increase the surface area of the substrate. The nanometer-scale structures may be coated with materials that are sensitive to various physical parameters or chemicals such as but not limited to temperature, humidity, pressure, atmospheric pressure, electromagnetic signals originating from biological or non-biological sources, volatile gases, and pH. The increased surface area achieved through the disclosed process is intended to improve the sensitivity of the sensors formed by coating of the nanometer-scale structure and substrate with a material which can be used to sense physical parameters and chemicals as listed previously. An embodiment with nanometer-scale structures on a textile substrate coated with a conductive, malleable and bio-compatible sensing material for use as a biopotential measurement electrode is provided.

A microstructure comprises a plurality of interconnected units wherein the units are formed of hexagonal boron nitride (h-BN) tubes. The graphene tubes may be formed by photo-initiating the polymerization of a monomer in a pattern of interconnected units to form a polymer microlattice, removing unpolymerized monomer, coating the polymer microlattice with a metal, removing the polymer microlattice to leave a metal microlattice, depositing an h-BN precursor on the metal microlattice, converting the h-BN precursor to h-BN, and removing the metal microlattice.

An example method of coating a substrate involves cleaning the substrate and, after cleaning the substrate, sensitizing the substrate using a sensitizing solution including tin chloride and hydrochloric acid. The method also involves, after sensitizing the substrate, activating the substrate in an activating solution including palladium chloride and hydrochloric acid. Further, the method involves subsequently neutralizing the substrate using a neutralizing solution including ammonium hydroxide. Still further, the method involves, after neutralizing the substrate, depositing an electroless nickel layer on the substrate. The method may then involve depositing an electrolytic nickel layer on top of the electroless nickel layer, and depositing an outer layer of metallic material, ceramic material, polymeric material, or any combination thereof on top of the electrolytic nickel layer.

There is provided a method for treating a surface comprising heating the object and the object with a solution comprising a thermal initiator and a polymerizable molecule, wherein the polymerizable molecule reacts with the surface and forms a covalent bond and optionally a covalently bound polymer on the surface of the object. Metal ions are bound to the surface to make the surface possible for adding further metal later. Advantages include that complicated geometries can be coated, problems with oxygen inhibition of the initiator is reduced, and surface reaction to form covalent bonds is promoted compared to the bulk polymerization reaction.

Provided is a method of manufacturing a printed circuit nano-fiber web. A method of manufacturing a printed circuit nano-fiber web according to an embodiment of the present invention includes (1) a step of electrospinning a spinning solution including a fiber-forming ingredient to manufacture a nano-fiber web; and (2) a step of forming a circuit pattern to coat an outer surface of nano-fiber included in a predetermined region on the nano-fiber web using an electroless plating method. According to the present invention, a circuit pattern-printed nano-fiber web having flexibility and resilience suitable for future smart devices may be realized. In addition, a circuit pattern may be densely formed to a uniform thickness on a flexible nano-fiber web using an electroless plating method, and the flexible nano-fiber web may include a plurality of pores. Accordingly, since the printed circuit nano-fiber web may satisfy waterproofness and air permeability characteristics, it can be used in various future industrial fields including medical devices, such as biopatches, and an electronic device, such as smart devices.