Electrical Sensing in a Magnetic Liquid

• We have investigated the electrical current transmission characteristics of a magnetic field controlled self-assembled percolated structure of conducting colloid particles. The colloidal liquid contains conducting magnetic and non-magnetic microbeads suspended in an oil-based ferrofluid. The applied in-plane magnetic field is able to precisely control the current transmission. Optical transmission microscopy reveals the local ordering in the liquid with the microparticles forming percolating chains through which the current is transmitted.

Subject headings

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Keyword

Conducting liquid

electromagnetic assembly

ferrofluid

percolation

Publication and Content Type

ref (subject category)

art (subject category)