Pressure sensitive micro particle adhesion through biomimicry of the…
Pressure sensitive micro particle adhesion through biomimicry of the pollen-stigma interaction
"Biomimetics Adhesive Structures"
"Recent studies on biomimetic adhesive structures have attributed the remarkable adhesion ability of a number of biological systems to micro scale and nanoscale hierarchical hairy or fibrillar interfacial structures"
"Generally, the fascinating adhesion features of those biomimetic structures result from large contact areas generated by the contact of millions of these hierarchical structures via weak but universal van der Waals forces and/or collective mechanical interlocking forces. "
"Nature also provides remarkable examples of evolutionary-optimized microscale biological particles with hierarchical strucutures and/or chemistries tailored for effective adhesion to a variety of natural surfaces."
Q:"In all of these examples, however, the adhesion produced is at a magnitude that is appropriate for macroscopic-sized objects ."
"Pollen possess features that allow adhesion to be finely tuned on a much smaller scale than those of animals and macroscopic plant surfaces."
Ornamentations that vary in morphology and feature size that are evolutionally-optimized .
adhere on animals
dispersion in air
Pollen adhesion is crucial to the complex steps in pollen transport.
"The pollens of plants pollenated by animals must 1) be easily removed from one flower by the pollinator, 2) adhere well to the pollinator during transport, and 3) readily release onto a complementary plant stigma surface."
How pollen and stigma surfaces accomplish such feats is not well understood.
have established a number of facts that lead us to believe
this is a fruitful system for the study of patterns in driving complementary adhesion in soft matter
1) pollen-stigma interfaces differ from species to species, exhibiting wide variation in morphology
2) initial adhesion of pollen on stigmas is generally driven by generic van der Waals interactions.
3) stigmas adhere poorly to pollen grains from other botanical families.
Mimicking pollen adhesive mechanism may enable micro scale particles with tailored adhesion for use in....
paints and coatings
Pollen as a unique template
inorganic metal and metal-oxide particles with unique functionalities has been produced.