Sound Processing

From an engineering perspective, there are several aspects to the relationship between optics and sound. For example, the notation of sound events (i.e., through the musical notation system) offers a graphical representation of sound in terms of quantized frequency along a quantized time axis. In other words, optical characters are used to capture sound and [..]

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A portable microscope, developed as part of a scalable, point-of-care, label-free microarray platform, may offer more rapid detection of sepsis and other infections caused by bacteria, ultimately saving millions of lives each year. The device combines photonics technology, microfluidics and molecular biology to produce sample-to-result processing up to 50 times faster than current testing techniques.. [..]

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By combining expertise in photonics – manipulating light beams in nanoscale waveguides on a chip – and materials science, Cornell researchers have laid the groundwork for a chemical sensor on a chip that could be used in small portable devices to analyze samples in a lab, monitor air and water quality in the field and [..]

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Optical coherence tomography (OCT), adaptive optics and other technologies have opened up a world of possibilities for imaging the retina, right down to the photoreceptor cells (rods and cones) that are the gateway to vision. But the equipment for cellular-resolution imaging is bulky, heavy and inconvenient, making it all but useless for addressing one key [..]

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A camera technology dubbed Coded Access Optical Sensor (CAOS) now works in unison with CCD and CMOS camera sensors to extract previously unseen images. The CCD sensor camera — a technology that earned its inventors a Nobel Prize in 2009 — and CMOS sensor camera, and dominate imaging.. Read more

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The ability to employ a single laser source in more than one microscopy modality has obvious theoretical advantages, but in practice is tricky to achieve effectively. Read more

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Recent and upcoming deployments of satellite laser communication systems are bringing Internet-like speeds for data transmission in space. The result could be a revolution in communication, both on Earth and across the solar system. Read more

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A material that can control excitons — bound pairs of electrons and electron holes — at room temperature could enable optoelectronic devices for commercial applications. Excitons are created when a laser is shone onto a semiconductor device. They can transport energy without transporting net electric charge. Read more

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Researchers from Germany, Greece and the United States have found a way to use the “noise” from X-ray crystallography of imperfect crystals to produce sharp, 3-D images of large protein complexes without the usual need for molecular phase data. Read more

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Transparent metamaterials under development could enable computer chips and interconnecting circuits that use light instead of electrons to process and transmit data, representing a potential leap in performance. Read more

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