BUMP: Buckled Microlens Patterns for Optics and Adhesion A new
method to produce microlens arrays based on confinement of
surface wrinkles. A material is laterally confined in at least
one dimension as a stress is applied, such as compression,
swelling, photopolymerization or heat, which then generates
surface "wrinkles" in the desired configuration. Previous
chemical modification creates the necessary elastic moduli
differences on the surface to control wrinkle formation. -
Tunable optical refractive devices - Compound lens for multi-
angular light detection - Smart surfaces for adhesion control -
True pressure-sensitive adhesives - Self-cleaning surfaces -
Rapid generation of microlens arrays over macroscopic lateral
dimensions - Low cost, efficient method - Ease of tuning
microlens arrays through control of elastic moduli of materials
and degree of lateral confinement - Ability to pattern microlens
arrays over non-planar substrates. - Optical properties are
easily tuned and amenable to a wide variety of mat