Electrophoretic Deposition of Hydroxyapatite Nanocrystal


Article Preview

Homogeneous nano-thin layer of hydroxyapatite (HAp) nanocrystals on the gold surface was fabricated by an electrophoretic deposition method (EPD); the HAp nanocrystals were dispersed into ethanol and the applied voltage was varied. The HAp nanocrystals were prepared by a wet method at 4 °C and 80 °C, which were characterized by X-ray diffraction and Fourier-transform infrared spectroscopy. The micro-thin layer of HAp nanocrystals was initially formed, and the ultrasonic treatments can remove the surplus nanocrystals from the surface. The nanostructure of the surface was investigated by atomic force microscopy and contact angle measurement. The thickness of coating layers was approximately 20nm and the root mean square (RMS) roughness was under 6.6 nm, which was clearly depended on the crystal sizes, applied voltages and applied times.



Key Engineering Materials (Volumes 309-311)

Main Theme:

Edited by:

Takashi Nakamura, Kimihiro Yamashita and Masashi Neo




A. Monkawa et al., "Electrophoretic Deposition of Hydroxyapatite Nanocrystal", Key Engineering Materials, Vols. 309-311, pp. 643-646, 2006

Online since:

May 2006




[1] J. Hamagami, Y. Ato, K. Kanamura Solid State Ionics Vol. 172 (2004), p.331.

[2] A. Stoch, A. Brozek, G. Kmita, J. Stoch, W. Jastrzebski, J. Rakowska Mol. Struct. Vol. 596 (2001), p.191.

DOI: https://doi.org/10.1016/s0022-2860(01)00716-5

[3] I, Zhitomirsky L. Gal-Or J Mater Sci Mater Med Vol. 8 (1997), p.213.

[4] M. Wei, A.J. Ruys, M.V. Swain, S.H. Kim, B.K. Milthorpe, C.C. Sorrell. J. Mater. Sci. Mater. Med. Vol 10 (1999), p.401.

[5] D.M. Liu, Q.Z. Yang, T. Troczynski Vol. 23 (2002), p.691.

[6] L. Sun, C.C. Berndt, K.A. Gross, A. Kucuk, J. Biomed. Mater. Res. Appl. Biomat. Vol. 58 (2001), p.570.

[7] K. A. Khor, P. J. Cheang, Therm. Spray Technol. Vol. 3 (1994), p.45.

[8] C. Wang, Z. Chen, L. Guan, Z. Liu, P. Wang, S. Zheng, X. Liao, Surf. Coat. Technol. Vol. 130 (2000), p.39.

[9] L. Cleries, E. Martinez, J. M. Fernandez-Pradas, G. Sardin, J. Esteve, J. L. Morenza, Biomaterials Vol. 21 (2000), p.967.

DOI: https://doi.org/10.1016/s0142-9612(99)00240-9

[10] J. M. Fernandez-Pradas, M. V. Garcia-Cuenca, L. Cleries, G. Sardin, J. L. Morenza, Appl. Surf. Sci. Vol. 195 (2002), p.31.

[11] I, Zhitomirsky L. Gal-Or J Mater Sci Mater Med Vol. 8 (1997), p.213.

[12] L. P. Kangasniemi, K. de Groot, T. Kokubo, J. Am. Ceram. Soc. Vol. 77 (1994), p.1307.

[13] Y. Zhang, C. J. Brinker and R. M. Crooks, Mater. Res. Soc. Symp. Proc. Vol. 271 (1992), p.465.

[14] M. J. Shane, J. B. Talbot, B. G. Kinney, E. Sluzky and K. R. Hesse, J. Colloid Interface Sci. Vol. 165 (1994).