Self-folding 3D film assemblies

A substantially planar self-folding film assembly, comprising:

• a flexible support substrate;
• an array of adhesive elements;
• an array of flexible folding members, each comprising a base, at least one folding region, and at least one pre-strained polymer actuator having a shape, a thickness, a glass transition temperature;
• and
• a light to heat converting die or coating attached to the folding member,
• wherein the pre-strained polymer actuator is not co-extensive with the folding member.

A substantially planar self-folding film assembly, comprising:

• a flexible support substrate;
• an array of adhesive elements;
• an array of flexible folding members, each comprising a base, at least one folding region, and at least one pre-strained polymer actuator composite having a shape, a thickness, a glass transition temperature;
• and
• a light to heat converting die or coating attached to the folding member,
• wherein the pre-strained polymer actuator composite comprises overlapped, interleaved, or woven individual shaped pre-strained polymer actuator elements.