Microcontact printing stamps with functional features

An elastomeric microcontact printing stamp comprising a base surface and a stamping surface extending away from the base surface, the stamping surface comprising:

• at least one first pattern element with a fill factor of 20 to 99 percent, wherein the first pattern element of the stamping surface comprises a continuous region and at least one discontinuous region comprising at least one of:
• (1) one or more elongated concavities, and (2) one or more interior voids;
• and
• at least one second pattern element having a fill factor of 0.25 to 10 percent, and wherein the second pattern element of the stamping surface comprises a plurality of traces, wherein each trace has a width from 0.1 micrometers to 50 micrometers;
• wherein the stamping surface has disposed thereon an ink comprising a plurality of functionalizing molecules comprising at least one functional group selected to bind to a substrate and form a self-assembled monolayer (SAM) of the functionalizing molecules on the substrate.

An electrically conductive pattern disposed on a visible light transparent substrate, the pattern comprising:

• at least one first pattern element comprising a fill factor of 20 to 99 percent, wherein the first pattern element comprises a continuous region and at least one discontinuous region, wherein the discontinuous region comprises at least one of:
• (1) one or more elongated concavities, and (2) one or more interior voids;
• and
• at least one second pattern element electrically connected to the first pattern element, wherein the second pattern element has a fill factor of 0.25 to 10 percent, and wherein the second pattern element further comprises traces, and wherein each trace has width from 0.1 micrometers to 50 micrometers.

A method comprising:

• tensioning a web material between two support rollers at a tension up to about 10 pounds per lineal inch;
• mounting a poly(dimethylsiloxane) stamp on a surface of a roller supported by an air bearing, wherein the stamp comprises a base surface and a stamping surface extending away from the base surface, the stamping surface comprising an arrangement of pattern elements, the pattern elements comprising:
• at least one first pattern element with a fill factor of 20 to 99 percent, wherein the first pattern element comprises a continuous region and at least one discontinuous region, the discontinuous region comprising at least one of:
• (1) one or more elongated concavities;
• and (2) one or more interior voids;
• and
• at least one second pattern element contiguous with the first pattern element, wherein the second pattern element has a fill factor of 0.25 to 10 percent, wherein the second pattern element comprises a plurality of elongated traces, and wherein each trace has a width of 0.1 micrometers to 50 micrometers;
• inking the stamping surface with an ink composition comprising an organosulfur compound;
• contacting the inked stamping surface with a major surface of the web material for a contact time sufficient for a thiol functional group on the organosulfur compound to bind to an ink-receptive surface of the web material to provide a self-assembled monolayer (SAM) of the organosulfur compound thereon according to the arrangement of pattern elements on the stamping surface;
• and removing the stamping surface from the major surface of the web material.