An etching method that includes using the etching liquid composition containing (A) 0.1 to 15 mass % of hydrogen peroxide, (B) 0.01 to 1 mass % of a fluoride ion source, (C) 2-hydroxyethane sulfonic acid or a salt thereof in an amount of 0.1 to 20 mass % in terms of organic sulfonic acid, (D) 0.01 to 5 mass % of at least one compound selected from the group consisting of azole-based compounds and compounds having a structure that has a 6-membered heterocycle including at least one nitrogen atom and three double bonds, and (E) water, is provided.

An etching method that includes using the etching liquid composition containing (A) 0.1 to 15 mass % of hydrogen peroxide, (B) 0.01 to 1 mass % of a fluoride ion source, (C) 2-hydroxyethane sulfonic acid or a salt thereof in an amount of 0.1 to 20 mass % in terms of organic sulfonic acid, (D) 0.01 to 5 mass % of at least one compound selected from the group consisting of azole-based compounds and compounds having a structure that has a 6-membered heterocycle including at least one nitrogen atom and three double bonds, and (E) water, is provided.

Surfaces of metals and alloys that exhibit hydrophilic, omniphilic or hydrophobic properties, and methods of preparation thereof. The surface is roughened by surface polishing, thermo-catalytic etching, and temperature gradient etching. This procedure produces a hierarchical micro-/nano-scale roughness in the surface which comprises grooves, micro-cavities, and nano-cavities. This greatly enhances the hydrophilic and omniphilic properties of the pure surface without the need for coatings or oxidation. A further step of immersing the roughened surface in a stearic acid solution makes the surface hydrophobic or superhydrophobic.

Surfaces of metals and alloys that exhibit hydrophilic, omniphilic or hydrophobic properties, and methods of preparation thereof. The surface is roughened by surface polishing, thermo-catalytic etching, and temperature gradient etching. This procedure produces a hierarchical micro-/nano-scale roughness in the surface which comprises grooves, micro-cavities, and nano-cavities. This greatly enhances the hydrophilic and omniphilic properties of the pure surface without the need for coatings or oxidation. A further step of immersing the roughened surface in a stearic acid solution makes the surface hydrophobic or superhydrophobic.

A web support with a high degree of patterning freedom and excellent durability, a production method therefor, and a patterning method. The web support is used when applying a pattern to a nonwoven substance by jetting a high-pressure water stream on a web. The web support production method comprises: a step of preparing a flat metal base material; a step for forming, by etching, a first water conduction hole and second water conduction hole that pass through the front surface of the base material to the back surface, and a recess on the front surface of the base material that includes the first water conduction hole and that corresponds to the pattern; and a step for forming the base material into a cylindrical main body section by welding the edges of the base material to each other.

A web support with a high degree of patterning freedom and excellent durability, a production method therefor, and a patterning method. The web support is used when applying a pattern to a nonwoven substance by jetting a high-pressure water stream on a web. The web support production method comprises: a step of preparing a flat metal base material; a step for forming, by etching, a first water conduction hole and second water conduction hole that pass through the front surface of the base material to the back surface, and a recess on the front surface of the base material that includes the first water conduction hole and that corresponds to the pattern; and a step for forming the base material into a cylindrical main body section by welding the edges of the base material to each other.

Capacitive sensing devices are provided that include a sensing pattern of conductive traces disposed upon the surface of a substrate and a first passive circuit element that includes a metallic conductor disposed upon the same surface of the substrate. In some embodiments, the first passive circuit element is a component of an electronic circuit that can be, for example, a low pass filter. Provided capacitive sensing devices are useful, for example, when incorporated into projected touch screen display panels for use on electronic devices.

Capacitive sensing devices are provided that include a sensing pattern of conductive traces disposed upon the surface of a substrate and a first passive circuit element that includes a metallic conductor disposed upon the same surface of the substrate. In some embodiments, the first passive circuit element is a component of an electronic circuit that can be, for example, a low pass filter. Provided capacitive sensing devices are useful, for example, when incorporated into projected touch screen display panels for use on electronic devices.

A liquid flow path portion of a vapor chamber according to the present invention includes a plurality of main flow grooves which each extend in the first direction and through which working fluid in liquid form passes. A convex array which includes a plurality of liquid flow path convex portions arranged in the first direction via a communicating groove, is provided between a pair of the main flow grooves adjacent to each other. Each of the communicating grooves allows communication between the corresponding pair of the main flow grooves. The width of the communicating groove is larger than the width of the main flow groove.

A touch screen sensor includes a visible light transparent substrate and an electrically conductive micropattern disposed on or in the visible light transparent substrate. The micropattern includes a first region micropattern within a touch sensing area and a second region micropattern. The first region micropattern has a first sheet resistance value in a first direction, is visible light transparent, and has at least 90% open area. The second region micropattern has a second sheet resistance value in the first direction. The first sheet resistance value is different from the second sheet resistance value.