Tunable mass separation via negative mobility

A Słapik, J Łuczka, P Hänggi, J Spiechowicz - Physical Review Letters, 2019 - APS
A prerequisite for isolating diseased cells requires a mechanism for effective mass-based
separation. This objective, however, is generally rather challenging because typically no …

Separation of interacting active particles in an asymmetric channel

A Gupta, PS Burada - Physical Review E, 2023 - APS
We study the diffusive behavior of interacting active particles (self-propelled) with mass m in
an asymmetric channel. The particles are subjected to an external oscillatory force along the …

Separating micrometer-sized particles utilizing a dusty plasma ratchet

ZM Cai, ZB Ma, YK Zhao, FC Liu, YF He - Applied Physics Letters, 2023 - pubs.aip.org
Directional transport-dominated particle separation presents major challenges in many
technological applications. The Feynman ratchet can convert the random perturbation into …

Skyrmion dynamics and transverse mobility: skyrmion Hall angle reversal on 2D periodic substrates with dc and biharmonic ac drives

NP Vizarim, CJO Reichhardt, PA Venegas… - The European Physical …, 2020 - Springer
We numerically examine the dynamics of a skyrmion interacting with a two-dimensional
periodic substrate under dc and biharmonic ac drives. We show that the Magnus force of the …

Propagating density spikes in light-powered motility-ratchets

C Lozano, B Liebchen, B Ten Hagen, C Bechinger… - Soft Matter, 2019 - pubs.rsc.org
Combining experiments and computer simulations, we use a spatially periodic and flashing
light-field to direct the motion of phototactic active colloids. Here, the colloids self-organize …

Dimensional coupling-induced current reversal in two-dimensional driven lattices

AK Mukhopadhyay, T **e, B Liebchen, P Schmelcher - Physical Review E, 2018 - APS
We show that the direction of directed particle transport in a two-dimensional ac-driven
lattice can be dynamically reversed by changing the structure of the lattice in the direction …

External-field-induced dynamics of a charged particle on a closed helix

A Siemens, P Schmelcher - Physical Review E, 2021 - APS
We investigate the dynamics of a charged particle confined to move on a toroidal helix while
being driven by an external time-dependent electric field. The underlying phase space is …

Asymptotic population imbalance of an ultracold bosonic ensemble in a driven double well

J Chen, AK Mukhopadhyay, P Schmelcher - Physical Review A, 2020 - APS
We demonstrate that an ultracold many-body bosonic ensemble confined in a one-
dimensional double-well potential exhibits a population imbalance between the two wells at …

Mass separation in an asymmetric channel

N Khatri, PS Burada - Physical Review E, 2021 - APS
We present a mechanism to sort out particles of different masses in an asymmetric channel,
where the entropic barriers arise naturally and control the diffusion of these particles. When …

Superexponential self-interacting oscillator

P Schmelcher - Journal of Physics A: Mathematical and …, 2020 - iopscience.iop.org
The superexponential self-interacting oscillator (SSO) is introduced and analyzed. Its power
law potential is characterized by the dependence of both the base and the exponent on the …