Effect of substrate patterning on hydroxyapatite sol-gel thin film growth

被引：8

作者：

Mudenda, S. ^{[1
]}

Streib, K. L. ^{[1
]}

Adams, D. ^{[1
]}

Mayer, J. W. ^{[2
]}

Nemutudi, R. ^{[3
]}

Alford, T. L. ^{[2
]}

机构：

[1] Univ Western Cape, Dept Phys, ZA-7535 Bellville, South Africa

[2] Arizona State Univ, Sch Mat Sci, Tempe, AZ 85287 USA

[3] IThemba LABS, Mat Res Grp, ZA-7129 Somerset W, South Africa

来源：

THIN SOLID FILMS | 2011年 / 519卷 / 16期

基金：

美国国家科学基金会; 新加坡国家研究基金会;

关键词：

Hydroxyapatite; Micro-patterned substrates; AFM; XRD; Substrate geometry; Sol-gel; Spin coating; Crystallite size; FIBROBLAST-LIKE CELLS; GROOVED SURFACES; MIGRATION; POLYSTYRENE; ALIGNMENT; BEHAVIOR; SHAPE;

D O I：

10.1016/j.tsf.2011.02.067

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of substrate patterning on hydroxyapatite (HA) sol-gel thin film growth is investigated. Sol-gel derived HA was spun onto wet and dry etched micro-patterned titanium substrates to obtain thin films of thickness similar to 400 nm. The amorphous films were made crystalline by firing at temperatures ranging from 650 to 850 degrees C for 5 min. Rutherford backscattering spectrometry (RBS), X-ray diffraction (XRD), and atomic force microscopy (AFM) were used to characterize the films. Crystal sizes calculated from XRD data show that films on patterned substrates contained larger grains than those on un-patterned substrates. The films on wet etched substrates contained larger grains than the films on dry etched substrates. AFM results confirm XRD results. A marked difference between the films on patterned and unpatterned substrates was observed, with those on the patterned substrates being much rougher than those on the unpatterned substrates. The films inside the channels contained larger grains than those outside of channels, on the polished, unetched portion of the substrate. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：5603 / 5608

页数：6

共 32 条

[31] Surface roughness and resistivity of Au film on Si-(111) substrate [J].