Methods of making a bonded assembly and a re-entrant structure, and method of transfer printing a masking layer
AssigneeThe Board of Trustees of the University of Illinois
InventorsSeok Kim, Hohyun Keum, Jun Kyu Park
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Abstract
A method of making a bonded polymeric assembly by transfer printing comprises contacting a stamp with a solid-phase ink comprising a photoresist to form an inked stamp, where the solid-phase ink is reversibly bound to the stamp. The inked stamp is aligned with an object comprising the photoresist and is stamped onto the object. The stamp is then removed, thereby transferring the solid-phase ink onto the object. The solid-phase ink is thermally joined with the object. Thus, a bonded polymeric assembly comprising a bonded joint between the solid-phase ink and the object is formed.
Claims20
A method of making a bonded polymeric assembly by transfer printing, the method comprising:
- contacting a stamp with a solid-phase ink comprising a photoresist to form an inked stamp, the solid-phase ink being reversibly bound to the stamp;
- aligning the inked stamp with an object comprising the photoresist;
- stamping the inked stamp onto the object;
- removing the stamp, thereby transferring the solid-phase ink onto the object;
- and
- thermally joining the solid-phase ink with the object, thereby forming a bonded polymeric assembly including a bonded joint between the solid-phase ink and the object.
A method of making a bonded assembly by transfer printing, the method comprising:
- contacting a stamp with a solid-phase ink to form an inked stamp, the solid-phase ink being reversibly bound to the stamp;
- aligning the inked stamp with an object;
- stamping the inked stamp onto the object;
- removing the stamp, thereby transferring the solid-phase ink onto the object;
- and
- heating the solid-phase ink and the object with a laser beam to effect thermal joining, thereby forming a bonded joint between the solid-phase ink and the object.
A re-entrant structure for repelling liquid droplets, the re-entrant structure comprising:
- a first object disposed on and bonded to a second object at a bonded joint between the first and second objects, each of the first and second objects comprising a polymer, the first object being oriented so as to include a suspended portion not supported by the second object, the suspended portion including an array of through-thickness holes.
A method of transfer printing a masking layer, the method comprising:
- contacting a stamp with a solid-phase ink comprising a polymer to form an inked stamp, the solid-phase ink being reversibly bound to the stamp;
- aligning the inked stamp with a target substrate;
- stamping the inked stamp onto the target substrate;
- removing the stamp, thereby transferring the solid-phase ink comprising the polymer onto the target substrate to form a masking layer of a predetermined pattern thereon, the target substrate including one or more unmasked portions not covered by the masking layer;
- processing the one or more unmasked portions of the target substrate;
- and
- after the processing, removing the masking layer.
Dependencies are inferred from the claim text.