An artificial spin ice array exploits two-dimensional chirality to take a step towards technology. The functionality of the micromagnetic array may be understood by analogy with a mechanical ratchet ...

A little perpetual motion device called the Feynman-Smoluchowski Rachet, also known as the Brownian Ratchet, was an early attempt at defying the laws of thermodynamics. It failed, but it was an ...

The ratchet mechanism is a fascinating energy-conversion system that converts disorderly or random motion into orderly, directed movement through a process known as spontaneous rectification. It is a ...

A recently granted patent (Publication Number: US11772527B2) describes a vehicle seat reclining device that includes a ratchet, a guide, a pawl, and a cam. The ratchet and guide are assembled in an ...

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