The Storing Properties of Electric Energy in Bone

Rumi Hiratai; Miho Nakamura; Akiko Nagai; Kimihiro Yamashita

doi:10.4028/www.scientific.net/KEM.493-494.170

Paper Titles

Nanostructured Bone Grafting Substitutes – A Pathway to Osteoinductivity
p.147

Characterization and Monitoring of the Evolution of a Calcium Phosphate/Calcium Sulfate Self−Setting Bone Cement
p.153

Effect of Simulated Body Fluid on the Behaviour of Artificial Bone Composite Material Extended by Hydroxyapatite and Silicate Powders
p.159

Calcite Bone Substitute Prepared from Calcium Hydroxide Compact Using Heat-Treatment under Carbon Dioxide Atmosphere
p.166

The Storing Properties of Electric Energy in Bone
p.170

Evaluation of TCP Loaded Clinoptilolite Use as Graft Material on Rabbit Tibia
p.175

Synthesis of Silver Incorporated Hydroxyapatite under Magnetic Field
p.181

Control of Antibiotic Delivery from TCP along with HA on Bone Cement in the Interface Bioactive Bone Cement for Prevention of Infection in Joint Replacement
p.186

Preparation and Characterization of Calcium Phosphate Crystals by Precursor Thermolysis Method
p.191

HomeKey Engineering MaterialsKey Engineering Materials Vols. 493-494The Storing Properties of Electric Energy in Bone

The Storing Properties of Electric Energy in Bone

Abstract:

We have shown that hydroxyapatite (HA), which characteristics were similar to those of bone’s inorganic components, had polarization capability and was possible to accumulate electricity under high temperature and pressure. Then, we presumed that bones had polarization capability which enabled electrical storage and conducted the experiment to measure the polarization capability of bones using rabbit’s femurs. After preparing and polarizing bone samples using KOH treatment (koh), KOH and baking treatment (koh+bake) and decalcification treatment (decalcification) as well as the bone without any treatment (untreat), quantitative amounts of stored charge in samples were determined by thermally stimulated depolarization current (TSDC) measurement of these samples. Under the condition of 400 °C for 1 h with the electric fields of 5kV/cm, samples of koh, koh+bake, and untreat showed polarization capability. In addition, under the polarization condition of 37 °C for 1 hour with the electric fields of 5kV/cm, all samples showed polarization capability. Those findings can be summarized that bones have the polarization capability which enables electrical storage and polarization of bones is possible even under the low temperature condition, which was at 37 °C in our experiment, where polarization is impossible for HA.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 493-494)

Pages:

170-174

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.493-494.170

Citation:

Cite this paper

Online since:

October 2011

Authors:

Rumi Hiratai, Miho Nakamura, Akiko Nagai, Kimihiro Yamashita

Keywords:

Bone, Electrical Mechanism, Polarization

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] E. Fukada and I Yasuda. On the Piezoelectric effect of bone. J. Phys. Soc. Japan. 12, 1158-1162. (1957).

DOI: 10.1143/jpsj.12.1158

Google Scholar

[2] K. Yamashita, N . Oikawa, T . Umegaki. Acceleration and deceleration of bone-like crystal growth on ceramic hydroxyapatite by electric poling. Chem Mater. 8. 2697-2700. (1996).

DOI: 10.1021/cm9602858

Google Scholar

[3] S. Ito, S. Nakamura. Enhanced bone ingrowth into hydroxyapatite with interconnected pores by Electrical Polarization. Biomaterials; 27(32)5572-5579. (2006).

DOI: 10.1016/j.biomaterials.2006.07.007

Google Scholar

[4] S. Itoh, S. Nakamura. Effect of electrical polarization of hydroxyapatite ceramics on new bone formation. Calcif Tissue Int; 78(3)133-142(2006).

DOI: 10.1007/s00223-005-0213-6

Google Scholar

[5] T. Kobayashi, S. Itoh. Enhanced bone bonding of hydroxyapatite-coated titanium implants by electrical polarization. J Biomed Mater Res A; 82(1)145-151(2007).

DOI: 10.1002/jbm.a.31080

Google Scholar

[6] S . Nakamura, H. Takeda, K. Yamashita. Proton Transport Polarization and Depolarization of Hydroxyapatite Ceremics. J Appl Phys; 89(10): 5386-92. (2001 ).

DOI: 10.1063/1.1357783

Google Scholar

[7] S. Mascarenhas. The electrets effect in bone and biopolymers and the bound-water problem , Annals New Tork Academy of Sciences.

Google Scholar