Bubble-powered acoustic microsystems span a plethora of applications that range from lab-on-chip diagnostic platforms to targeted interventions as microrobots. Numerous studies strategize this bubble-powered mechanism generate autonomous self-propulsion microrobots in response high frequency sound waves. Herein, we present two micro-propeller designs which contain an axis-symmetric distribution...

In this paper dynamics of a vapour bubble generated due to a local energy input inside a vertical rigid cylinder and in the absence of buoyancy forces is investigated. Different ratios of the diameter of the rigid cylinder to the maximum radius of the bubble are considered. The Boundary Integral Equation Method is employed for numerical simulation of the problem. Results show that during the co...

An investigation was carried out for swirling flow in a rotating pipe with highly viscous fluid containing micro-bubbles experimentally and numerically. In the numerical analysis, bubble trajectory of each bubble was calculated using resultant numerical flow field solutions. From experimental results, with an aid of the numerical simulation, data were obtained for the location of a stagnation p...

ABSTRACT We have developed an on-chip micro-pipette, which has abilities of cell injection, local regent blow, enucleation, air bubble generator, piercing cells, and micro-manipulation, made by SU-8 photoresist for cloning, chimera technology, cell assays, and artificial lipid bilayer membrane making. We used the property of SU-8 which has a sufficient stiffness enough to penetrate cells as wel...

Fast liquid jets, called micro-jets, are produced within cavitation bubbles experiencing an aspherical collapse. Here we review micro-jets of different origins, scales and appearances, and propose a unified framework to describe their dynamics by using an anisotropy parameter ζ > 0, representing a dimensionless measure of the liquid momentum at the collapse point (Kelvin impulse). This paramete...