Experimental study on actuation functions of coating-type magnetic wood

Experimental study on electromagnetic wave absorbing control of coating-type magnetic wood using a grooving process

“…Magnetic wood, which was first introduced and developed by the Oka group in 1991 [1][2][3], achieves a good harmony of both woody and magnetic functions through the active addition of magnetic characteristics to the wood itself. In addition to showing magnetic characteristics, this magnetic wood also offers a woody texture, low specific gravity, humidity control and acoustic absorption and is very easy to process.…”

Nanofibrillated cellulose composites and wood derived scaffolds for functional materials

“…77 Early works of Oka et al report on the simple pressure impregnation of wood and wood materials with aqueous magnetite particle dispersions proposing applications of the magnetized wood materials in electromagnetic shielding, actuation or induction heating. [78][79][80] The potential of magnetic wood as induction heating material was recently investigated by Gan and coworkers, by measuring a temperature rise of the magnetic wood from $20 C to $70 C in 10 min at a low frequency magnetic eld. In addition the magnetic wood acts as a thermal insulator due to the low thermal conductivity.…”

Growth of CoFe2O4 particles on wood template using controlled hydrothermal method at low temperature

“…Oka et al fabricated three types of magnetic wood by impregnating wood fiberboards (impregnated type), coating (coating type) and hot-pressing (powder type) with commercial magnetic materials, such as magnetite Fe 3 O 4 and Mn-Zn ferrite powder [12][13][14][15]. Recently, Merk et al precipitated magnetic iron oxide particles via the coprecipitation of ferric and ferrous ions in the presence of wood to produce hierarchical cell structure with a unique magnetic anisotropy [16].…”