Generation of hydroxyapatite patterns by electrophoretic deposition

• Published in: Journal of materials science. Materials in medicine Vol. 19; no. 3; pp. 1419 - 1424
• Main Authors: Yamaguchi, Seiji, Yabutsuka, Takeshi, Hibino, Mitsuhiro, Yao, Takeshi
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.03.2008; Springer Nature B.V
• Subjects: Algorithms; Biomaterials; Biomedical Engineering and Bioengineering; Biomedical materials; Calcium Compounds - chemical synthesis; Ceramics; Ceramics - chemical synthesis; Ceramics - chemistry; Chemistry and Materials Science; Composites; Durapatite - chemical synthesis; Durapatite - chemistry; Electric fields; Electroplating - methods; Glass; Materials Science; Microscopy, Electron, Scanning; Natural Materials; Polymer Sciences; Porosity; Regenerative Medicine/Tissue Engineering; Silicates - chemical synthesis; Studies; Surfaces and Interfaces; Thin Films; Simulated Body Fluid; Wollastonite; Electrophoretic Deposition; PTFE; Distinct Boundary
• ISSN: 0957-4530; 1573-4838
• DOI: 10.1007/s10856-006-0053-6

Hydroxyapatite (HAp) patterns with distinct boundaries were generated by electrophoretic deposition (EPD) utilizing an insulating mask that partially blocks the electric field. For the EPD process, we selected two types of mask: a polytetrafluoroethylene (PTFE) board with holes and a resist pattern. A porous PTFE film, which differed from the mask PTFE, was employed as a substrate and attached to the mask. EPD was performed with a suspension of wollastonite particles in acetone, which were deposited on the substrate in the form of the patterned mask. The deposited wollastonite particles induced HAp patterns during a soak in simulated body fluid (SBF). As a result, minute HAp patterns, such as dots, lines, and corners were fabricated on the porous PTFE substrate with a minimum line width of about 100 μm.