<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>λ</mml:mi></mml:math>
-like transition in the dynamics of ratchet gears in active bath

Lugo, Maria Christine L.; Bayer, Khate Cheryl C.; Gonzales, Sheila G.; Confesor, Mark Nolan P.

doi:10.1103/physreve.102.052607

Cited by 6 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rotation reversal of a ratchet gear was also observed in these baths of active particles [36]. In the previous works [29][30][31][32][33][34][35][36], the asymmetry of the gear is necessary to obtain the directional rotation. Recently, Liao and coworkers [37] have discovered that a gear can rotate in a bath of chiral active particles.…”

Section: Introductionmentioning

confidence: 81%

“…Angelani and coworkers observed this directional motion of a rotary microdevice when placed in a bath of motile microorganisms [33]. Lugo and coworkers reported an inverse λ-like transition in the dynamics of ratchet gears in an active bath of self-propelling rods [34]. Jerez and coworkers studied the dynamics of these ratchets and established that their angular velocity displayed a nonmonotonic dependence with particle concentration [35].…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Chirality-induced directional rotation of a symmetric gear in a bath of chiral active particles

Zhu

et al. 2023

New J. Phys.

View full text Add to dashboard Cite

We conduct a numerical study exploring the rotation of a symmetric gear driven by chiral particles in a two-dimensional box with periodic boundary conditions. The symmetric gear is submerged in a ‘sea’ of chiral active particles. Surprisingly, even though the gear is perfectly symmetric, the microscopic random motion of chiral active particles can be converted into macroscopic directional rotation of the gear. (i) In the case of zero alignment interaction, the direction of rotation of the gear is determined by the chirality of active particles. Optimal parameters (the chirality, self-propelled speed, and packing traction) exist, at which the rotational speed reaches its maximum value. (ii) When considering a finite alignment interaction, alignment interactions between particles play an important role in driving the gear to rotate. The direction of rotation is dictated by the competition between the chirality of active particles and the alignment interactions between them. By tuning the system parameters, we can observe multiple rotation reversals. Our findings are relevant to understanding how the macroscopic rotation of a gear connects to the microscopic random motion of active particles.

show abstract

Section: Introductionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 98%

Chirality-induced directional rotation of a symmetric gear in a bath of chiral active particles

Zhu

et al. 2023

New J. Phys.

View full text Add to dashboard Cite

show abstract

“…The present rotor is symmetrical so that it fluctuates around the equilibrium position of the externally confined potential. Unlike the ratchet system, 35 the rotor does not apply directional torque to the active bath. Although the rotation angle fluctuates randomly, its angular velocity distribution deviates from the Gaussian function (see Fig.…”

Section: B Active Bathmentioning

confidence: 99%