Micrograph of the surface of ferrofluid,taken with episcopic lighting and Normarski Interference Contrast (DIC). Ferrofluids are colloidal liquids consisting of nanoscale ferromagnetic,or ferrimagnetic,particles suspended in a fluid,usually an oil. Each tiny particle is thoroughly coated with a surfactant to inhibit clumping. One application of ferrofluids is to keep dust off of the drive shafts of magnetic disk drives,which it does by creating a liquid seal held in place by magnetic fields. Object size; 0.5 mm | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Pasieka, Alfred |
Taille de l’image : | 4781 px × 3655 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |