| abstract |
It has been discovered that iron-platinum magnetic particles can be dispersed in a polymer, coated in or on a polymeric material (especially a hydrogel), or directly coupled to and magnetized. By using a magnetized material, magnetically labeled cells within the material are attracted, captured and / or retained in vivo. These magnetic particles have an iron / platinum core. The annealing of Fe: Pt is very important in order to derive the LI0 internal crystal phase which is a crystal structure. The Fe: Pt molar ratio for forming the crystalline phase is important and a molar range of 1.2 to 3.0 Fe (molar precursor, i.e. starting compound) relative to Pt is desirable for magnetization. The overall magnetic force can be measured using a “superconducting quantum interference scaffold” which is a sensitive magnetometer. The total magnetic force is in the range of 0.1 to 2.0 Tesla. |