@inproceedings{48d005b3c35244d3b2487cbb696d7658,
title = "Implantable wireless neural interface for multichannel neural recording and optogenetic neuromodulation",
abstract = "This paper presents a low cost, light-weight, and low power consuming wireless neural interface for multichannel neural recording and optogenetic neuromodulation with 470 and 589 nm light sources and a customizable pulse generator. To enhance the light coupling efficiency between the light emitting diode (LED) and 4 x 4 array of optical fibers, microlens array is used. Measured light intensity at the tip of the fiber array is 2.812 and 1.765 mW/mm2 for 470 and 589 nm light sources, respectively. Optical fibers are assembled with 4 x 4 microlens array on a silicon die, which enables the illumination of relatively large area in the brain. To record the neural signal, two zero-drift operational amplifiers and 12-bit ADC (analog-To-digital converter) were used. The sampling frequency on each channel is 16 kHz. A ± 160 μV, 100 Hz sine wave in saline solution was successfully measured and wirelessly transmitted with the fabricated device.",
keywords = "microlens array, neural recording, Optogenetics, wireless interface",
author = "Daeho Ryu and Saeyoung Jeon and Kim, {Yong Kweon} and Jun, {Sang Beom} and Ji, {Chang Hyeon}",
note = "Funding Information: ACKNOWLEDGMENT This work was supported by the Center for Integrated Smart Sensors funded by the Ministry of Science, ICT & Future Planning as Global Frontier Project (CISS-2012M3A6A6054204). Publisher Copyright: {\textcopyright} 2019 IEEE.; 2019 International Conference on Optical MEMS and Nanophotonics, OMN 2019 ; Conference date: 28-07-2019 Through 01-08-2019",
year = "2019",
month = jul,
doi = "10.1109/OMN.2019.8925256",
language = "English",
series = "International Conference on Optical MEMS and Nanophotonics",
publisher = "IEEE Computer Society",
pages = "8--9",
booktitle = "OMN 2019 - 2019 International Conference on Optical MEMS and Nanophotonics, Proceedings",
}