TY - GEN
T1 - Biomedical sensing with hydroxyapatite ceramics in GHz frequency range
AU - Korostynska, Olga
AU - Gandhi, Abbasi A.
AU - Mason, Alex
AU - Al-Shamma'a, Ahmed
AU - Tofail, Syed A.M.
PY - 2013
Y1 - 2013
N2 - Hydroxyapatite (HA) is a leading biocompatible material extensively used for bone implants as a porous ceramic graft and as a bioactive coating. Electrical characteristics of HA can be employed in implantable devices for real-time in vivo pressure sensor applications such as in knee or hip prosthesis. In particular, high piezo and pyroelectricity of HA, its polarisation by electron beam and selective adsorption of proteins on polarised domains indicate the potential for real-time biosensing applications of HA. For this purpose, a comprehensive understanding of the dielectric behaviour of different forms of HA over a frequency range relevant for biomedical sensing is critical. Such information for HA, especially its frequency dependent dielectric behaviour over the GHz range, is rare. To this end, we report on novel investigations of properties of HA in powder and film forms in the GHz frequency range.
AB - Hydroxyapatite (HA) is a leading biocompatible material extensively used for bone implants as a porous ceramic graft and as a bioactive coating. Electrical characteristics of HA can be employed in implantable devices for real-time in vivo pressure sensor applications such as in knee or hip prosthesis. In particular, high piezo and pyroelectricity of HA, its polarisation by electron beam and selective adsorption of proteins on polarised domains indicate the potential for real-time biosensing applications of HA. For this purpose, a comprehensive understanding of the dielectric behaviour of different forms of HA over a frequency range relevant for biomedical sensing is critical. Such information for HA, especially its frequency dependent dielectric behaviour over the GHz range, is rare. To this end, we report on novel investigations of properties of HA in powder and film forms in the GHz frequency range.
KW - Biocompatible sensor
KW - GHz frequency range
KW - Hydroxyapatite
KW - Piezoelectic and pyroelectric properties
KW - Powder and films
KW - Real-time pressure sensing in medical applications
UR - http://www.scopus.com/inward/record.url?scp=84876396966&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.543.26
DO - 10.4028/www.scientific.net/KEM.543.26
M3 - Conference contribution
AN - SCOPUS:84876396966
SN - 9783037856161
T3 - Key Engineering Materials
SP - 26
EP - 29
BT - Materials and Applications for Sensors and Transducers II
PB - Trans Tech Publications Ltd
T2 - 2nd International Conference on Materials and Applications for Sensors and Transducers, IC-MAST 2012
Y2 - 24 May 2012 through 28 May 2012
ER -