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A thermo-pneumatically actuated tunable microlens has been developed as a completely integrated system with on-chip actuation and temperature sensing. The focal length of the microlens can be adjusted over a wide range without any external pressure controller. The module consists of a structured silicon chip, a spin-coated PDMS membrane, an optical fluidic chamber, a thermal cavity, and a heating...
We report the first imaging SPR instrument that uses polarisation modulation and ellipsometric detection. This instrument achieves a good combination of both spatial and refractive index resolution in a simple optical setup. The polarisation of the incident beam is modulated and the reflected light imaged onto a high speed CMOS camera. To demonstrate sensitivity and linearity, refractive index measurements...
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