Vortex mixer

A novel vortex mixer actuated by one-shot electricity-free pumps

Effective mixing is vitally important to many microfluidic devices in the areas of biotechnical industries, analytic chemistry and medical industries. However, most micro-mixers require complicated fabrication procedures, possibly inappropriate for practical microfluidic utilization. These mixers generally operate under low Reynolds-number conditions, causing a relatively long reaction time in ...

A Formal Model of Identity Mixer Mixer

Identity Mixer is an anonymous credential system developed at IBM that allows users for instance to prove that they are over 18 years old without revealing their name or birthdate. This privacy-friendly technology is realized using zero-knowledge proofs. We describe a formal model of Identity Mixer that is well-suited for automated protocol verification tools in the spirit of black-box cryptogr...

Tissue grinding with ball bearings and vortex mixer for DNA extraction.

Many of the current applications of DNA technology require either the isolation of uncontaminated DNA from small tissue samples or the processing of a large number of samples. We are currently analyzing genetic variation in Panicum miliaceum L. and Manihot esculenta Christz by RAPD (Random Amplified Polymorphic DNA) (1). For RAPD analysis we require a technique that both quickly extracts DNA fr...

New Mixer Design Notes

This mixer is based on a passive FET resistive frequency converter cell described by first described in the literature by Steven Maas [ ] and explored by Wes Hayward and others [ ]. One difficulty with a DFET passive mixer is obtaining negative gate bias. This has been achieved using gate conduction as in the TriQuint 5M31 [Campbell, Criss], a LO frequency driven negative voltage converter as i...

Adaptive Control Mixer Method