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A novel micro optical diffusion sensor device has been developed, which enables high-speed measurement with a small sample volume and without using any additives. In this paper, the design of this sensor is considered.
We present simulations showing how light scattered by isolated particles increases by a factor 10, when they are placed in photonic crystal membranes. Exploiting this effect, single nano-particles have been detected with an optical microscope.
A conical micromirror is shown to increase the signal from fluorescent molecules within a collocated subwavelength metal aperture by 5×. Large-scale integration (75,000 miromirrors/aperture pairs) is demonstrated.
An integrated optical technique for interrogating the height of a suspended micro-electro-mechanical systems (MEMS) beam is demonstrated. This technique is highly sensitive, and capable of using WDM techniques to interrogate the height information of large arrays of beams. Our experimental results show a 7 dB change in the transmitted optical power when the beam height changes by 100 nm. It is predicted...
We demonstrated generation of various optical trap spots using a MEMS scanning micromirror with optical tweezers. By controlling the actuation voltage pattern, various focused laser lines and separate laser spots were achieved.
We have fabricated coplanar liquid lens having dielectric layer with thickness gradient, which was realized using reflow process of photoresist, demonstrating that the off-centering error was 20um that is considerably smaller than geometrical centering.
The ion image sensor was invented. The device enables two dimensional visualization of both the ion and optical imaging of chemical activity of solutions and cell activity. The CMOS device consists of an array of CCDs covered with functionalized membrane. Changes in the concentration and two dimensional distributions of several ions are detected by charge accumulation. We have recently reported on...
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