Illustration from Scientific Research

Schematic illustrating the process of capillary-induced self-assembly of printed high-aspect-ratio (slender) microstructures. r is the diameter of the slenders, d is the spacing distance of surrounding slenders and θ is the contacting angle of liquid and slenders. When the elastic restoring force ( F e ) cannot resist the adhesion ( F a ) of the slenders, the assembly is thus formed.

DOI