摘要
A multidisciplinary approach to the fabrication of biologically based magnetic monomers for biolimited forming is described. Rod-like Bacilli cereus about 0.5 mm in diameter and 3—5 mm in length, were used as templates on which the ferromagnetic material was deposited by an elec-troless deposition method. Different electroless plating solu-tions were compared in detail and CoNiP solution was se-lected. During the deposition process, both dispersant and mechanical stirring were used to solve the problem of ag-gregation of bacterial cells so as to obtain a uniform plating layer. The CoNiP film on Bacilli cereus was a mixture of crystalline and non-crystalline in the phase structure and showed a good magnetism. The magnetic metallized bacte-rial cells could be manipulated with a magnetic field. Parallel arrays of these micro magnetic particles were achieved and they could rotate along with the magnetic field.
A multidisciplinary approach to the fabrication of biologically based magnetic monomers for biolimited forming is described. Rod-like Bacilli cereus about 0.5 mm in diameter and 3—5 mm in length, were used as templates on which the ferromagnetic material was deposited by an elec-troless deposition method. Different electroless plating solu-tions were compared in detail and CoNiP solution was se-lected. During the deposition process, both dispersant and mechanical stirring were used to solve the problem of ag-gregation of bacterial cells so as to obtain a uniform plating layer. The CoNiP film on Bacilli cereus was a mixture of crystalline and non-crystalline in the phase structure and showed a good magnetism. The magnetic metallized bacte-rial cells could be manipulated with a magnetic field. Parallel arrays of these micro magnetic particles were achieved and they could rotate along with the magnetic field.
基金
This work was supported by the National Hi-Techno-logy Research and Development Program of China (Grant No. 2001AA421120) and the National Natural Science Foundation of China (Grant No. 59975007).
