TY - JOUR
T1 - Wetting of ferrofluids
T2 - Phenomena and control
AU - Latikka, Mika
AU - Backholm, Matilda
AU - Timonen, Jaakko V.I.
AU - Ras, Robin H.A.
PY - 2018/7/1
Y1 - 2018/7/1
N2 - Ferrofluids are liquids exhibiting remarkably strong response to magnetic fields, which leads to fascinating properties useful in various applications. Understanding the wetting properties and spreading of ferrofluids is important for their use in microfluidics and magnetic actuation. However, this is challenging as magnetically induced deformation of the ferrofluid surface can affect contact angles, which are commonly used to characterize wetting properties in other systems. In addition, interaction of the magnetic nanoparticles and solid surface at nanoscale can have surprising effects on ferrofluid spreading. In this review we discuss these issues with focus on interpretation of ferrofluid contact angles. We review recent literature examining ferrofluid wetting phenomena and outline novel wetting related ferrofluid applications. To better understand wetting of ferrofluids, more careful experimental work is needed.
AB - Ferrofluids are liquids exhibiting remarkably strong response to magnetic fields, which leads to fascinating properties useful in various applications. Understanding the wetting properties and spreading of ferrofluids is important for their use in microfluidics and magnetic actuation. However, this is challenging as magnetically induced deformation of the ferrofluid surface can affect contact angles, which are commonly used to characterize wetting properties in other systems. In addition, interaction of the magnetic nanoparticles and solid surface at nanoscale can have surprising effects on ferrofluid spreading. In this review we discuss these issues with focus on interpretation of ferrofluid contact angles. We review recent literature examining ferrofluid wetting phenomena and outline novel wetting related ferrofluid applications. To better understand wetting of ferrofluids, more careful experimental work is needed.
KW - Contact angle
KW - Ferrofluid
KW - Magnetic field
KW - Magnetic nanoparticles
KW - Wetting
UR - http://www.scopus.com/inward/record.url?scp=85047612779&partnerID=8YFLogxK
U2 - 10.1016/j.cocis.2018.04.003
DO - 10.1016/j.cocis.2018.04.003
M3 - Review Article
AN - SCOPUS:85047612779
SN - 1359-0294
VL - 36
SP - 118
EP - 129
JO - Current Opinion in Colloid and Interface Science
JF - Current Opinion in Colloid and Interface Science
ER -