ELFT HÍRADÓ

[Kádár György <kadargy AT mfa.kfki.hu>]

MFA Szeminárium (nem szerda!!!, csütörtök)

A.Subrahmanyam (IIT Madras):
Thin Films for Biomedical Engineering :
Emerging Concepts

2011. június 16.-án, csütörtökön 11:00 órakor
az MTA Műszaki Fizikai és Anyagtudományi
Kutatóintézet Tanácstermében,
KFKI 26. épület I. emelet

Minden érdeklődőt szívesen várunk

Kádár György (MFA)
kadargy AT mfa.kfki.hu

Thin films have advanced to may front line and strategic areas. In 
biomedical engineering many new concepts are emerging with thin films. 
Three concepts are chosen for the present talk as these are being 
executed in our laboratory in Chennai.
1.	Lung assist devices using principles of photocatalysis: 
Photocatalysis is an established technique in generating hydrogen and 
oxygen from water. Human blood contains about 80% of water. It is 
proposed to split the water available in the blood to generate oxygen 
using photocatalysis so that the haemoglobin can pick up this oxygen 
directly. This concept is being worked out in our laboratory over the 
past five years and the results are positive (this work is under a 
non-disclosure agreement with a company).
2.	 Single molecule detection by Surface Enhanced Raman Scattering 
(SERS): Raman effect gives the finger print of the molecule. However, 
single molecule detection is extremely difficult because of the hardware 
(detector sensitivity) problems. New concepts in Plasmonics and Surface 
Enhanced Raman Scattering (SERS) using gold and silver substrates have 
been successful in single molecule detection. An effort has been made in 
our laboratory to develop silver oxide substrates for SERS using the 
principles of photo-activation process. This technique is also believed 
to be most powerful in detecting toxic substances in minute traces.
3.	An early detection of failure of artificial heart valves: Artificial 
heart valves are routinely being used. It is important to diagnose the 
possible failure of the artificial heart valve well in advance so that a 
repair or a replacement is possible. The present effort involves 
development of magnetic sensors on artificial heart valves. This work is 
being taken up as Indo – European project with Institute for New 
Materials Saarbrucken, Germany.