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SUMMARY:An Ultra-sensitive Polymer Composite Cantilever Technology for Dis
 posable Bio-chemical Sensing Applications - Prof. V. Ramgopal Rao\, ITT Bo
 mbay
DTSTART:20100521T130000Z
DTEND:20100521T140000Z
UID:TALK24907@talks.cam.ac.uk
CONTACT:spl37
DESCRIPTION:Many bio-chemical sensing applications require ultra sensitive
 \, low cost and disposable sensors. Conventional silicon based materials t
 end to be expensive\, less sensitive and not suitable for disposable appli
 cations. In this work we present a novel polymer process technology for re
 alization of a highly sensitive nano-particle based piezo-resistive polyme
 r composite cantilevers that can be fabricated at sub 100o C process tempe
 ratures.  Electro-mechanical characterization of the fabricated microcanti
 levers yielded a resonance frequency which is a few tens of kHz and a defl
 ection sensitivity in the range of 1.1 ppm (ΔR/R) for a nanometer of defl
 ection. These cantilevers have been used for a range of applications such 
 as for detection of explosive molecules such as TNT/RDX in the parts-per-t
 rillion level of concentrations as well as for developing an integrated sy
 stem to provide point-of-care diagnostic support for cardiovascular diseas
 es. Prototypes of these systems are currently under development for field 
 trials. \n
LOCATION:Kapitza Building Seminar Room\, Cavendish Laboratory\, Department
  of Physics
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