Concept
Chiral knot
Publications associées (19)
The strength of surgical knots involves a critical interplay between friction and elastoplasticity
Pedro Miguel Nunes Pereira de Almeida Reis, Paul Johanns, Changyeob Baek, Paul Grandgeorge
Knots are the weakest link in surgical sutures, serving as mechanical ligatures between filaments. Exceeding their safe operational limits can cause fatal complications. The empirical nature of present guidelines calls for a predictive understanding of the ...
AMER ASSOC ADVANCEMENT SCIENCE2023Mechanics of Physical Knots: From Filaments in Contact to Surgical Suturing
In this thesis, we study the mechanics of tight physical knots. Knots are omnipresent in surgery, climbing, and sailing, with disastrous consequences when the filament or the rope fails to perform its function. Even if the importance of mechanical analysis ...
EPFL2023Exploring the inner workings of the clove hitch knot
Pedro Miguel Nunes Pereira de Almeida Reis, Tomohiko Sano, Paul Johanns, Changyeob Baek, Paul Grandgeorge
We perform a combined experimental and computational investigation of the clove hitch knot. We develop a physical model for the clove hitch by tying an elastic rod onto a rigid cylinder. In the experiments, we characterize the mechanical performance, geome ...
ELSEVIER2022On chirality of toroidal embeddings of polyhedral graphs
We investigate properties of spatial graphs on the standard torus. It is known that nontrivial embeddings of planar graphs in the torus contain a nontrivial knot or a non-split link due to [2, 3]. Building on this and using the chirality of torus knots and ...
World Scientific Publishing2017Tuning knot abundance in semiflexible chains with crowders of different sizes: a Monte Carlo study of DNA chains
We use stochastic simulation techniques to sample the conformational space of linear semiflexible polymers in a crowded medium and study how the knotting properties depend on the crowder size and concentration. The abundance of physical knots in the chains ...
Royal Society of Chemistry2016Untangling the Mechanics and Topology in the Frictional Response of Long Overhand Elastic Knots
Pedro Miguel Nunes Pereira de Almeida Reis
We combine experiments and theory to study the mechanics of overhand knots in slender elastic rods under tension. The equilibrium shape of the knot is governed by an interplay between topology, friction, and bending. We use precision model experiments to q ...
American Physical Society2015Mechanical form-finding of timber fabric structures
How about fastening a knot? not with ropes... but with timber panels. Timber Fabric
Structures (TFS) originate from such an inspiration. An architectural reinterpretation
of fabric techniques (mainly braiding) using building scale timber panels to design ...
EPFL2014