Abstract
Hydroxyapatite (HA) nanorods elongated in the c axis were produced at 38-80 °C in an aqueous solution system that was based on simulated body fluid. Specific columnar structures consisting of HA nanorods were produced through epitaxial growth on a c-face HA substrate under a mildly acidic condition. The morphology of the columnar structure was controlled by changing the growth condition and adding amino acid. The length and width of the columns were varied in a range from several tens of nanometers to several micrometers. Densely packed columns were produced with hexagonal HA rods at 80 °C. Fibrous columns of HA with gaps were formed at 60 °C in the presence of aspartic acid. The Young's modulus of the densely packed HA columns was comparable to those of a human enamel and a rabbit bone oriented in c axis. The columnar structures can contribute to controlling the mechanical performance of biological and biomedical HA crystals.
| Original language | English |
|---|---|
| Pages (from-to) | 143-148 |
| Number of pages | 6 |
| Journal | Journal of Asian Ceramic Societies |
| Volume | 1 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2013 |
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Keywords
- Bioceramics
- Calcium phosphate
- Mechanical property
- Self-organization
ASJC Scopus subject areas
- Ceramics and Composites
Cite this
Formation of c-axis-oriented columnar structures through controlled epitaxial growth of hydroxyapatite. / Wang, Wensi; Oaki, Yuya; Ohtsuki, Chikara; Nakano, Takayoshi; Imai, Hiroaki.
In: Journal of Asian Ceramic Societies, Vol. 1, No. 2, 2013, p. 143-148.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Formation of c-axis-oriented columnar structures through controlled epitaxial growth of hydroxyapatite
AU - Wang, Wensi
AU - Oaki, Yuya
AU - Ohtsuki, Chikara
AU - Nakano, Takayoshi
AU - Imai, Hiroaki
PY - 2013
Y1 - 2013
N2 - Hydroxyapatite (HA) nanorods elongated in the c axis were produced at 38-80 °C in an aqueous solution system that was based on simulated body fluid. Specific columnar structures consisting of HA nanorods were produced through epitaxial growth on a c-face HA substrate under a mildly acidic condition. The morphology of the columnar structure was controlled by changing the growth condition and adding amino acid. The length and width of the columns were varied in a range from several tens of nanometers to several micrometers. Densely packed columns were produced with hexagonal HA rods at 80 °C. Fibrous columns of HA with gaps were formed at 60 °C in the presence of aspartic acid. The Young's modulus of the densely packed HA columns was comparable to those of a human enamel and a rabbit bone oriented in c axis. The columnar structures can contribute to controlling the mechanical performance of biological and biomedical HA crystals.
AB - Hydroxyapatite (HA) nanorods elongated in the c axis were produced at 38-80 °C in an aqueous solution system that was based on simulated body fluid. Specific columnar structures consisting of HA nanorods were produced through epitaxial growth on a c-face HA substrate under a mildly acidic condition. The morphology of the columnar structure was controlled by changing the growth condition and adding amino acid. The length and width of the columns were varied in a range from several tens of nanometers to several micrometers. Densely packed columns were produced with hexagonal HA rods at 80 °C. Fibrous columns of HA with gaps were formed at 60 °C in the presence of aspartic acid. The Young's modulus of the densely packed HA columns was comparable to those of a human enamel and a rabbit bone oriented in c axis. The columnar structures can contribute to controlling the mechanical performance of biological and biomedical HA crystals.
KW - Bioceramics
KW - Calcium phosphate
KW - Mechanical property
KW - Self-organization
UR - http://www.scopus.com/inward/record.url?scp=85010023126&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85010023126&partnerID=8YFLogxK
U2 - 10.1016/j.jascer.2013.03.009
DO - 10.1016/j.jascer.2013.03.009
M3 - Article
AN - SCOPUS:85010023126
VL - 1
SP - 143
EP - 148
JO - Journal of Asian Ceramic Societies
JF - Journal of Asian Ceramic Societies
SN - 2187-0764
IS - 2
ER -