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SUMMARY:Optical Microsystems and Applications in Biosensing and Thermal Im
 aging  - Prof. Hakan Urey\, Koç University\, Electrical&amp\;Electronic E
 ngineering Department\, Optical Microsystems Laboratory (OML)\, Istanbul-T
 urkey
DTSTART:20131115T133000Z
DTEND:20131115T143000Z
UID:TALK48700@talks.cam.ac.uk
CONTACT:Dr Myriam Ouberai
DESCRIPTION:Optics and MEMS is a powerful combination with many applicatio
 ns. In this talk I’ll focus on two projects in our group: cantilever bas
 ed biosensor and thermo-mechanical infrared imaging using.  Both systems s
 how good examples of combining MEMS with optical readout to achieve high-s
 ensitivity and parallel readout. \n\nLabel-free biosensing offer important
  advantages for point-of-care diagnostics due to its simplicity. We develo
 ped a biosensor platform technology platform where nickel-based MEMS canti
 levers are placed in a disposable cartridge with no electrical connections
 . The reader unit contains an electromagnet for remote actuation\, a laser
  for optical readout\, and detectors and control electronics to track the 
 phase and amplitude of multiple cantilevers near resonance. Initial applic
 ations we demonstrated are coagulation time measurements using serum and w
 hole blood\, and detection of hepatitis at low concentrations. \n\nIn the 
 second part of the talk\, I’ll describe our work on thermal imaging sens
 or where MEMS based pixels absorb thermal radiation and bend in response t
 o heating. The detection is using a remote laser and grating interferomete
 r integrated underneath each pixel\, which offer excellent sensitivity. We
  exploited both CCD camera based readout and integrated CMOS readout. CMOS
  readout IC is post-processed to open through silicon via holes next to ea
 ch pixel to allow laser light before integration with the MEMS detector ar
 ray. \n\n
LOCATION:Kapitza Building Seminar Room 16\, Cavendish Laboratory\, Departm
 ent of Physics
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