Compressing slippery surface-assembled amphiphiles for tunable haptic energy harvesters.

ABSTRACT: A recurring challenge in extracting energy from ambient motion is that devices must maintain high harvesting efficiency and a positive user experience when the interface is undergoing dynamic compression. We show that small amphiphiles can be used to tune friction, haptics, and triboelectric properties by assembling into specific conformations on the surfaces of materials. Molecules that form multiple slip planes under pressure, especially through π-π stacking, produce 80 to 90% lower friction than those that form disordered mesostructures. We propose a scaling framework for their friction reduction properties that accounts for adhesion and contact mechanics. Amphiphile-coated surfaces tend to resist wear and generate distinct tactile perception, with humans preferring more slippery materi

SUBMITTER: Jani PK 

PROVIDER: S-EPMC11734710 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature