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Detectors play a vital role in ultrasound sensing and imaging applications. With the rapid development of photoacoustic imaging technology in recent years, novel ultrasound detectors based on optical methods have gained increased attention, among which the imprinted polymer microring is a representative one. This review covers the device design, fabrication, and characterization, with an emphasis...
We report high angular tolerant transmission visible spectrum filters exploiting strong resonance behaviors in an ultrathin semiconductor layer between two metals. The angle robust property remains over a wide incident angular range up to ±70°.
Prism coupled silica micro-tubes were studied as optical bio-sensing elements. We demonstrated to sense the glucose concentration change in the micro-tube and the smallest concentration change can be detected in our system is 0.3 mM.
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