[ Back to EurekAlert! ]

Contact: FANG HaiPing
Science in China Press

Schematic of How a Ratchet Works at Macro-/Meso-Scale and Nanoscale

Caption: At macro-/meso-scale, an additional perturbation with long-range time correlation is required for unidirectional transport in asymmetric systems. However, at nanoscale, because thermal noise has a significantly long autocorrelation time, unidirectional transport is feasible in asymmetric systems, even in the situation that thermal noise is the only perturbation. In such a situation, extra energy is required to sustain the asymmetry of the system against thermal noise.

Credit: Science China Press

Usage Restrictions: None

Related news release: Thermal noise molecular ratchet mechanism found by researchers in the Chinese Academy of Sciences

[ Back to EurekAlert! ]