Microorigami: Fabrication of small, three-dimensional, metallic structures

Microcontact printing (mu CP) and wet chemical etching generated two-dimens ional (2D) patterns in thin silver films, Electroplating silver onto these patterns increased the structural integrity of the metal layer. Separating the metal film from the substrate resulted in free-standing, 2D structures. Folding of these structures along predesigned "hinges" produced three-dime nsional (3D) objects. Additional electrodeposition of nickel welded hinges into position, strengthened the structure, and joined separate pieces. By p rinting onto cylindrical surfaces, it was possible to generate complex shap es efficiently and to minimize joining steps.