22 December 2015 A wirelessly powered microspectrometer for neural probe-pin device
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Treatment of neurological anomalies, whether done invasively or not, places stringent demands on device functionality and size. We have developed a micro-spectrometer for use as an implantable neural probe to monitor neuro-chemistry in synapses. The micro-spectrometer, based on a NASA-invented miniature Fresnel grating, is capable of differentiating the emission spectra from various brain tissues. The micro-spectrometer meets the size requirements, and is able to probe the neuro-chemistry and suppression voltage typically associated with a neural anomaly. This neural probe-pin device (PPD) is equipped with wireless power technology (WPT) to enable operation in a continuous manner without requiring an implanted battery. The implanted neural PPD, together with a neural electronics interface and WPT, enable real-time measurement and control/feedback for remediation of neural anomalies. The design and performance of the combined PPD/WPT device for monitoring dopamine in a rat brain will be presented to demonstrate the current level of development. Future work on this device will involve the addition of an embedded expert system capable of performing semi-autonomous management of neural functions through a routine of sensing, processing, and control.
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Sang H. Choi, Sang H. Choi, Min Hyuck Kim, Min Hyuck Kim, Kyo D. Song, Kyo D. Song, Hargsoon Yoon, Hargsoon Yoon, Uhn Lee, Uhn Lee, } "A wirelessly powered microspectrometer for neural probe-pin device", Proc. SPIE 9668, Micro+Nano Materials, Devices, and Systems, 96683Z (22 December 2015); doi: 10.1117/12.2202203; https://doi.org/10.1117/12.2202203

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