We observe both the well-characterized short wavelength sinewave buckling mode and two types of torsional instabilities, ... Collagen fibrils are nanoscale biological ropes with a diameter between 50 and 500 nm. They are the main constituent of load ... We extract single collagen fibrils from bovine tendons and absorb them on a pre-stretched silicon rubber. We characterize the ... Abstract: R12.00008 : Compressing collagen fibrils attached to an elastic substrate: buckling and torsional instabilities*. 9: ...