Magnetically actuated circular displacement micropump

Magnetically Actuated Multiscale Medical Robots

Magnetic manipulation systems designed to date have typically relied on either stationary electromagnetswhich facilitate straightforward real-time control, but result in large and complex systemsor slowly moving permanent magnetswhich generate strong fields, but are typically controlled in a quasistatic fashion. In the Telerobotics Lab at the University of Utah, we are exploring the use of smal...

An Electromagnetically-Actuated All-PDMS Valveless Micropump for Drug Delivery

This paper presents the fabrication process of a single-chamber planar valveless micropump driven by an external electromagnetic actuator. This micropump features a pair of micro diffuser and nozzle elements used to rectify the fluid flow, and an elastic magnetic membrane used to regulate the pressure in the enclosed fluid chamber. Polydimethylsiloxane (PDMS) is used as the main construction ma...

Magnetically induced circular polarization.

Magnetically actuated nanorod arrays as biomimetic cilia.

We present a procedure for producing high-aspect-ratio cantilevered micro- and nanorod arrays of a PDMS-ferrofluid composite material. The rods have been produced with diameters ranging from 200 nm to 1 mum and aspect ratios as high as 125. We demonstrate actuation of these superparamagnetic rod arrays with an externally applied magnetic field from a permanent magnet and compare this actuation ...

Magnetically-actuated artificial cilia for microfluidic propulsion.

In this paper we quantitatively analyse the performance of magnetically-driven artificial cilia for lab-on-a-chip applications. The artificial cilia are fabricated using thin polymer films with embedded magnetic nano-particles and their deformation is studied under different external magnetic fields and flows. A coupled magneto-mechanical solid-fluid model that accurately captures the interacti...