Electrohydrodynamics and dielectrophoresis in microsystems: scaling laws

Electrohydrodynamics and dielectrophoresis in microsystems: scaling laws

The movement and behaviour of particles suspended in aqueous solutions subjected to non-uniform ac electric fields is examined. The ac electric fields induce movement of polarizable particles, a phenomenon known as dielectrophoresis. The high strength electric fields that are often used in separation systems can give rise to fluid motion, which in turn results in a viscous drag on the particle....

Dielectrophoresis and electrohydrodynamics-mediated fluidic assembly of silicon resistors

In this letter, we present techniques, utilizing dielectrophoresis and electrohydrodynamics, which can be used for assembling single-crystal silicon devices suspended in a solution onto a binding site on a heterogeneous substrate. Silicon resistors with gold/chromium layers located at the end of the resistors and silicon blocks without metal were fabricated on bonded and etched-backed silicon-o...

Scaling Laws in Turbulence∗

The largely open problem of scaling laws in fully developed turbulence is discussed, with the stress put on similarities and differences with scaling in field theory. A soluble model of the passive advection is examined in more detail in order to illustrate the principal ideas. 1 LANGEVIN VERSUS NAVIER-STOKES Many dynamical problems in physics may be described by evolution equations of the type...

Scaling Laws in Robotics

Scaling laws are pervasive in biological systems, found in a large number of life processes, and across 27 orders of magnitude. Recent findings show both biological and engineered motors adhering to two fundamental regimes for the mass scaling of maximum force output. This scaling law is of particular interest for the robotics field as it can affect the design stage of a robot. In this study we...

Dimensional analysis and scaling laws