A nanoporous stamp for printing a variety of materials is disclosed. The nanoporous stamp may include a substrate and an array of carbon nanotubes disposed on and attached to the substrate. The array of carbon nanotubes can have an etched top surface and a wettable, nanoporous structure, and may include a coating thereon. The nanoporous stamp can be used in a variety of printing applications, and can print, among other things, colloidal and non-colloidal inks on a variety of substrates with a high degree of accuracy and fidelity.

A nanoporous stamp for printing a variety of materials is disclosed. The nanoporous stamp may include a substrate and an array of carbon nanotubes disposed on and attached to the substrate. The array of carbon nanotubes can have an etched top surface and a wettable, nanoporous structure, and may include a coating thereon. The nanoporous stamp can be used in a variety of printing applications, and can print, among other things, colloidal and non-colloidal inks on a variety of substrates with a high degree of accuracy and fidelity.

A stamping-face plate holder is provided. The stamping-face plate holder comprises a plate holding member formed with a positioning recess for receiving and positioning a stamping-face plate and a film for covering the stamping-face plate held in the plate holding member. The stamping-face plate is made of a porous material impregnated with ink. The plate holding member consists of a top paper board and a bottom paper board, both boards being integrated by adhering and the positioning recess is formed in the top paper board. The film covers the whole surface of the top paper board and adheres to the top paper board excepting the stamping-face plate held therein.

A stamping-face plate holder is provided. The stamping-face plate holder comprises a plate holding member formed with a positioning recess for receiving and positioning a stamping-face plate and a film for covering the stamping-face plate held in the plate holding member. The stamping-face plate is made of a porous material impregnated with ink. The plate holding member consists of a top paper board and a bottom paper board, both boards being integrated by adhering and the positioning recess is formed in the top paper board. The film covers the whole surface of the top paper board and adheres to the top paper board excepting the stamping-face plate held therein.

Provided in one embodiment is a dynamically tunable structure including an elastic layer, and a plurality of ferromagnetic micropillars disposed over the elastic layer. The elastic layer may have an elasticity that is greater than an elasticity of the micropillars.

Provided in one embodiment is a dynamically tunable structure including an elastic layer, and a plurality of ferromagnetic micropillars disposed over the elastic layer. The elastic layer may have an elasticity that is greater than an elasticity of the micropillars.

A marking device that targets a fastened member and a fastening member (5,6), the marking device comprising; a housing that covers the fastening member (5, 6); and a marking member that is coupled to the housing via a support shaft (30) and is swingable toward the fastening member (5, 6),
characterized in that when a vector having, as a start point, a marked corner part (MC1) and having the swing center (31) as an end point at is a first vector (V1a), and a vector having the marked corner part (MC1) as a start point, and is directed in a direction orthogonal to a central axis (C) of the fastening member (5) and away from the fastening member (5, 6) is a second vector (V2a), an angle (1) formed by these two vectors (V1a, V2a) is equal to or greater than 90 degrees and less than 180 degrees.