Nanocrystalline biphasic resorbable calcium phosphate (HAp/beta-TCP) thin film prepared by electron beam evaporation technique

作者：Elayaraja K; Chandra V Sarath; Joshy M I Ahymah; Suganthi R V; Asokan K; Kalkura S Narayana^*

来源：Applied Surface Science, 2013, 274: 203-209.

DOI：10.1016/j.apsusc.2013.03.016

• Biomaterials
• Electron beam evaporation
• Wettability
• Bioactivity
• Drug delivery system

Biphasic calcium phosphate (BCP) thin film having resorbable beta-tricalcium phosphate (beta-TCP) and nonresorbable hydroxyapatite (HAp) phases having enhanced bioactivity was synthesized by electron beam evaporation technique. Nanosized BCP was deposited as a layer (500 nm) on (0 0 1) silicon substrate by electron beam evaporation and crystalline phase of samples were found to improve on annealing at 700 degrees C. Uniform deposition of calcium phosphate on silicon substrate was verified from elemental mapping using scanning electron microscope (SEM-EDX). Annealing of the samples led to a decrease in surface roughness, hydrophobicity and dissolution of the coating layer. Amoxicillin loaded thin films exhibited significant bacterial resistance. In addition, BCP thin films did not exhibit any cytotoxicity. Antibiotics incorporated BCP coated implants might prevent the post-surgical infections and could promote bonebonding of orthopedic devices.

• 出版日期2013-6-1