Abstract Directed transport of a deformable particle is numerically investigated in two-dimensional periodic channel. Unlike the rigid particle, can pass through channel bottleneck that significantly smaller than size. The characteristics greatly affect directed particle. (i) For case active self-propelled velocity break thermodynamics equilibrium and induce transport. average peak (or valley) ...

A simple zero-velocity method to determine the particle magnetic susceptibility by measuring the magnetophoretic velocity was proposed. The principle is that the magnetophoretic velocity of a particle in a liquid medium must be zero when the magnetic susceptibilities of the medium and the particle are equal, or the gravity force and the magnetophoretic force are balanced. By changing the medium...

The most sensitive hearing and peak frequencies of courtship calls of the stream goby, Padogobius martensii, fall within a quiet window at around 100 Hz in the ambient noise spectrum. Acoustic pressure was previously measured although Padogobius likely responds to particle motion. In this study a combination pressure (p) and particle velocity (u) detector was utilized to describe ambient noise ...

As we all know, when the relative velocity of two inertial reference frames ∑ and ∑′ is less than the speed of light, the relations of xμ with x ′ μ, a particle mass m with its velocity υ, and a particle mass with its energy are all given by Einstein’s special relativity. In this paper, we will give new relation of xμ and x ′ μ when the relative velocity of ∑ and ∑′ frame is larger than the spe...

Vestibular afferents display linear responses over a range of amplitudes and frequencies, but comparable data for central vestibular neurons are lacking. To examine the effect of stimulus frequency and magnitude on the response sensitivity and linearity of non-eye movement central vestibular neurons, we recorded from the vestibular nuclei in awake rhesus macaques during sinusoidal yaw rotation ...

1. Velocity thresholds of neurones in the displacement-sensitive pathway of the crayfish were investigated using a stimulus programme of ramp fluid movements, with a range of velocities from 0-01-55 cm s" at the source (in both forward and backward directions). 2. The velocity of the stimulus was calculated to produce particle movements with velocities of between 0-001-1-0cms" at the receptors ...

A shear flow of particles in a laser-driven two-dimensional (2D) dusty plasma is observed in a study of viscous heating and thermal conduction. Video imaging and particle tracking yields particle velocity data, which we convert into continuum data, presented as three spatial profiles: mean particle velocity (i.e., flow velocity), mean-square particle velocity, and mean-square fluctuations of pa...

Laser-wakefield accelerators (LWFA) can produce electric fields of order 10-100 GV/m suitable for acceleration of electrons to relativistic energies. The wakefields are excited by a relativistically intense laser pulse propagating through a plasma and have a phase velocity determined by the group velocity of the light pulse. Two important effects that can limit the acceleration distance and hen...