Abstract:
Techniques are generally described that include electrokinetic pumping an emulsion comprising an ionic fluid and a nonpolar fluid to promote flow of the ionic fluid by electro-osmotic flow and drag the nonpolar fluid by viscous drag forces. In some examples, the electrokinetic pump may be utilized to deliver one or more reagents within a fluidic reactor system, such as a micro-scale reactor system. In some additional examples, a reagent may be dissolved in the nonpolar fluid of a first emulsion and pumped through the electrokinetic pump to a mixing channel to allow the reagent of the first emulsion to react with a reagent of second emulsion to form a reactive product.
Abstract:
A flame retardant additive includes red phosphorus adsorbed into a porous carrier. The carrier may be mixed with white phosphorus above its melting point (41° C.), so that liquid phosphorus is pulled into the pores of the carrier by capillary action. The phosphorus-loaded carrier may be heated above 250° C. to convert the white phosphorus to red phosphorus. The resulting red phosphorus-loaded carrier may retain flame retardant activity, and may also be protected from the environment for easier handling and formulation. By employing a carrier of a suitably small particle size, it is practical to incorporate the flame retardant red phosphorus-loaded carrier in thin films.
Abstract:
Disclosed herein are solubility changeable dye compositions, methods of preparing such compositions and methods of using them. The composition includes a dye component linked via a linker moiety to a stimulus responsive hydrophobic moiety which modulates the solubility of the dye, wherein the hydrophobic moiety is configured to be de-linked from the dye component on exposure to a stimulus and render the dye component more hydrophilic.
Abstract:
Techniques are generally described for adjusting a magnetic field in a magnetic bearing by moving permanent magnets in real time. Some example devices or systems include a magnetic bearing comprising electro-actuators adapted to move permanent magnets relative to a rotor to balance the rotor. For instance, in one example, each electro-actuator includes electro-active material adapted to deform in response to being exposed to an electrical field. This deformity causes permanent magnets attached to a surface of each electro-actuator to move relative to a rotor to balance the rotor. In many examples, a measurement circuit may be coupled to each electro-actuator and adapted to measure a capacitance of each electro-actuator. The capacitance measurement may be used to determine an adjustment signal to adjust the magnetic field in real time.
Abstract:
A method for preparing a biocompatible polymeric composite includes modifying a first biocompatible polymer with a primer group to form a modified biocompatible polymer; blending the modified biocompatible polymer with a second biocompatible polymer and an inorganic material; allowing the primer group of the modified biocompatible polymer to react with the inorganic material to form a biocompatible polymeric composite. Such biocompatible polymeric composites may be formed into medical devices such as tissue growth scaffolds and bone growth scaffolds.