Tunable mass separation via negative mobility
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. This objective, however, is generally rather challenging because typically no …
Separation of interacting active particles in an asymmetric channel
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 …
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 …
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
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 …
periodic substrate under dc and biharmonic ac drives. We show that the Magnus force of the …
Propagating density spikes in light-powered motility-ratchets
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 …
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
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 …
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 …
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
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 …
dimensional double-well potential exhibits a population imbalance between the two wells at …
Mass separation in an asymmetric channel
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 …
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 …
law potential is characterized by the dependence of both the base and the exponent on the …