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Note:
Biotechnology Congress 2018 & Emerging Materials 2018
Biomedical Research
|
ISSN: 0976-1683
|
Volume 29
S e p t e m b e r 0 6 - 0 7 , 2 0 1 8 | B a n g k o k , T h a i l a n d
allied
academies
Joint Event on
EMERGING MATERIALS AND NANOTECHNOLOGY
BIOTECHNOLOGY
&
Annual Congress on
Global Congress on
Biomed Res 2018, Volume 29 | DOI: 10.4066/biomedicalresearch-C4-011
ADVANCED NANO MATERIALS FOR
RENEWABLE ENERGIES
Purushottam Joshi
INL- International Iberian Nanotechnology Laboratory, Portugal
T
he energy conversion from most of the present-day
process is 15% to 30%. And remaining energy is lost.
Traditional energy regenerators for renewables are bulky and
needs higher capital investment. By incorporating advanced
nano materials into the energy process efficiency of energy
conversion can be increased by another 15%. Figure of merit
provides rough estimate of efficiency of energy conversion.
Devices manufactured using conventional materials have
figure of merit of 0.7 to 0.9. Recently theoretically and
practically it has shown that by incorporating nano materials in
renewable devices, figure of merit can enhance by two to three
folds. In this talk we will show various strategies for producing
nano materials and show that how figure of merit is increased
using such nano materials.
ORIGINAL PROCESS OF BIOACTIVE
GLASS NANOPARTICLES
ELABORATION: APPLICATIONS
IN BONE BIOMATERIALS
RECONSTRUCTION
Oudadesse H, Najem S, B Lefeuvre, Lucas-Gitot A
and
P Pellen
University of Rennes 1, France
R
ecently, nanotechnology offers a new strategy to develop
novel bioactive materials. Nanoscience are attractive
in relation to regenerative medicine and tissue engineering
approaches. Nanoparticles with size of 100 to 120 nm
enhanced the interactions between cells and biomaterial
surfaces. The higher specific surface area of nanoscale
bioactive glasses allows faster release of ions and accelerates
the deposition process of hydroxyapatite. Ternary bioactive
glass nanoparticles (BGN) composed by SiO
2
– CaO – P
2
O
5
were prepared by a novel method based on a quick alkali-
mediated sol-gel method, in which the size of the bioactive
glasses could be controlled. Particles size distribution of BGN
has been determined by using dynamic light scattering (DLS).
Obtained results show the size between 20 and 40 nm with
an average of 36 nm. These sizes have been increased to 120
nm for biomedical applications according to the experimental
method. Physicochemical characterization has been
conducted by using several complementary techniques. The
bioactive character of these BGN biomaterials was confirmed
by using
in vitro
assays. Nanoparticles have been immersed
in simulated body fluid (SBF) for different periods. The
formation of hydroxyapatite layer was rapidly observed on the
surface of BGN. Based on these results, this bioactive glass
nanoparticle with excellent bioactivity would be a promising
biomaterial for bone tissues engineering. After preparation
and characterization, these BGN will be coated on metallic
prosthesis using the electrophoresis method and associated
with therapeutic molecules.