Friction-free Precision, from Space to Watchmaking

(EPFL, September 25, 2025)

Researchers from EPFL, CSEM, and Almatech SA, led by Prof. Simon Henein and Dr. Florent Cosandier, have engineered compliant mechanisms that withstand higher loads and offer larger strokes, surpassing traditional limitations. This advancement enhances reliability and precision in fields like robotics, aerospace, and possibly biomedical devices, introducing systems that demand minimal maintenance while maximizing durability. The team used parasitic motion and created a new flexure-based oscillator that moves more freely. They applied advanced additive manufacturing, such as Laser Bed Powder Fusion, to produce complex, assembly-free components, ensuring smooth operation. This innovation paves the way for more robust mechanisms in space exploration, watchmaking, and medical devices, likely cutting maintenance costs and boosting reliability across sectors. EPFL and CSEM's work, eliminating wear and lubrication needs through creative design and manufacturing, redefines compliant mechanism development.