Adhesion and friction in gecko toe attachment and detachment
Geckos can quickly attach and detach from walls and ceilings by controlling friction and adhesion with tiny structures on their toes. They create strong forces when attaching by rolling their toes inward and reduce the forces for detachment by rolling their toes upward and backward. This ability to rapidly adjust adhesion and friction could inspire dry adhesives and robotic designs.
Nature-Inspired Directional Microneedle Structures
A new, easy, and cost-effective method creates bio-inspired microhooks for use as reusable dry adhesives on soft materials like skin or fabric. The process uses photolithography and molding to make molds with tiny hooks. These hooks grip strongly in one direction and detach easily in the other, similar to natural hooks. They are 2.25 times stronger at gripping than sliding and provide a good hold on artificial skin, making them ideal for wearable medical devices.
Advances in the Fabrication and Characterization of Superhydrophobic Surfaces Inspired by the Lotus Leaf
The Lotus leaf has inspired the creation of superhydrophobic surfaces, which repel water. This review explains the science behind superhydrophobicity, including the role of surface texture and chemistry. It also discusses different methods for creating these surfaces, their pros and cons, and advances in measuring their effectiveness.
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