ferrofluid – TechConnect Briefs

Controlling light diffraction with nanostructures

Tufaile A., Tufaile A.P.B., Vanderelli T.A., Snyder M., Tufaile A., Tufaile A.P.B., University of Sao Paulo, BR

We are presenting the main results of our research using smart fluids to control the light scattering using some devices based on nanotechnology. We are presenting the Ferrolens or Ferrocell®, which consists of a Hele-Shaw [...]

A novel Planetary Motion of Ferrofluid Drops in a Rotating Magnetic Field

Chen C-Y, National Chiao Tung University, TW

Driven by an external rotating field, a novel phenomenon of planetary-like double rotations, such as a local self-spin of individual drops and the global revolution of the drop array, is uncovered in arrayed ferrofluid drops. [...]

Synthesis of Magnetically Sensitive Nanomaterials with Tunable Properties

Ieta A., Patus J., Apenowic J., Marius C., State University of New York at Oswego, US

New magnetic nanomaterials with tunable properties were produced using three procedures. (1) Mixtures of polyvinyl alcohol (PVA) solutions and ferric oxide [3] based ferrofluid were prepared and also electrospun with the purpose of synthesizing magnetic [...]

Computational Modeling of Electromagnetically Induced Heating of Magnetic Nanoparticle Materials for Hyperthermic Cancer Treatment

Rast L., Harrison J.G., University of Alabama at Birmingham, US

We present results on the computational modeling of electromagnetically induced heating for the purpose of hyperthermic cancer treatment with magnetic nanoparticle fluids. Magnetic hyperthermia can therefore be used for direct targeting and destruction of tumors [...]

Multifunctional Microvalves Control by Optical Illumination on Nanoheaters and its Application in Centrifugal Microfluidic Devices

Park J.M., Cho Y-K, Lee B-S, Lee J-G, Lee B-S, Lee J-G, Ko C., Samsung Advanced Institute of Technology, KR

We report ultrafast control of phase-change based microvalves utilizing nanoheaters; ferronanoparticles dispersed in paraffin wax, and heating by optical illumination using a 808 nm laser diode. High speed camera images showed that the actual response [...]

Ferrofluid Masking for Lithographic Applications

Yellen B., Friedman G., Drexel University, US

A novel self-aligned “soft masking” method that is compatible with traditional photolithographic processes is demonstrated. This method uses a suspension of ultra-fine iron oxide grains (ferrofluid) to protect or de-protect selected areas of a magnetically [...]

A Study on the Novel Type of Ferrofluid Magnetic Pipette

Ahn J.J., Oh J., Choi B., Sogang University, KR

This study was performed to design the novel type of ferrofluid magnetic pipette on a micro scale for the purpose of applications to delivery systems, which is the core device of Lab on a chip [...]

Numerical Modeling of Ferrofluid Flow Instabilities in a Capillary Tube at the Vicinity of a Magnet

Berthier J., Ricoul F., LETI, FR

The use of ferrofluids is now foreseen to be important for microfluidic systems and biotechnological microsystems as microvalves, micropumps or for the control and synchronization of the flow. The advantage lies in the possibility of [...]