Back to results
US 2021/0238001 A1Published application
Continous manufacturing of surface wrinkle features
AssigneeThe Trustees of the University of Pennsylvania
InventorsDaeyeon LEE, Kathleen STEBE, Shu YANG, Xu ZHANG
Life of this patent
Estimating the term…
Abstract
Provided are systems and methods for inducing strain fields to give rise to controllable wrinkle patterns in a variety of substrates. Also provided are articles having persistent wrinkling patterns thereon.
Claims43
A method, comprising:
- (a) with a working material that comprises an elastomeric material and a second material that defines the uppermost portion of the working material,
- effecting a stress within the working material, the effecting being accomplished by contacting the elastomeric material to a support substrate,
- optionally applying a stimulus so as to change a mechanical property of the uppermost portion of the working material, and
- at least partially releasing the stress within the working material so as to give rise to a plurality of persistent wrinkles in the uppermost portion of the working material;
- (b) applying a stimulus so as to change a mechanical property of an uppermost portion of a working material that comprises an elastomeric material,
- effecting a stress within the working material, the effecting being accomplished by contacting the elastomeric material to a support substrate, and
- at least partially releasing the stress within the intermediate material so as to give rise to a plurality of persistent wrinkles in the uppermost portion of the working material;
- or
- (c) any combination of (a) or (b).
6 more elements
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
An article, comprising:
- a flexible sheet having an uppermost portion, the uppermost portion comprising a plurality of wrinkles having a wavelength of from about 100 nm to about 100 um and an amplitude of from 50 nm to about 20 um.
(canceled)
A system, comprising:
- a support substrate;
- the system being configured to contact a working material to the support substrate so as to give rise to a stress within the working material;
- and
- optionally, a stimulus source configured to apply a stimulus to an uppermost portion of the working material, and
- the system being configured to at least partially release the stress within the working material so as to give rise to a plurality of persistent wrinkles in the uppermost portion of the working material.
2 more elements
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
Dependencies are inferred from the claim text.