Abstract The increasing demands for the reduction of carbon dioxide emission require intensified efforts to increase resource efficiency. Especially in mobility sector with large moving masses, savings can contribute enormously emissions. One possibility is reduce weight vehicles by using lightweight technologies. A frequently used method implementation multi-material systems. These consist dis...

We study the dynamics of a prolate spheroidal microswimmer in Poiseuille flow for different flow geometries. When moving between two parallel plates or in a cylindrical microchannel, the swimmer performs either periodic swinging or periodic tumbling motion. Although the trajectories of spherical and elongated swimmers are qualitatively similar, the swinging and tumbling frequency strongly depen...

We reveal that under moderate shear stress (etagamma[over ] approximately 0.1 Pa) red blood cells present an oscillation of their inclination (swinging) superimposed to the long-observed steady tank treading (TT) motion. A model based on a fluid ellipsoid surrounded by a viscoelastic membrane initially unstrained (shape memory) predicts all observed features of the motion: an increase of both s...

We present experimental results on statistics of polymer orientation angles relative to the shear plane and tumbling times in shear flow with thermal noise. The strong deviation of the probability distribution functions (PDFs) of the orientation angles from Gaussian PDFs was observed in good accord with theory. A universal exponential PDF tail for the tumbling times and its predicted scaling wi...

Robotic manipulation of a bulky object is challenging due to the limited kinematics and payload manipulator. In this study, robot realizes general-shaped objects utilizing contact with environment. We propose hierarchical planner that effectively combined three styles, namely, pivoting, tumbling, regrasping. our proposed method, we first generate set superimposed planar segments on surface obta...

Six Escherichia coli che loci (cheA,-B,-R,-W,-Y, and Z) are located in two adjacent operons that map at minute 42 on the chromosome. Point mutants defective in any of these six functions have aberrant swimming patterns and are generally nonchemotactic. Deletions within the two major che gene operons were isolated in order to examine epistatic interactions among these genes. We first constructed...