TY - GEN
T1 - The first neural probe integrated with light source (blue laser diode) for optical stimulation and electrical recording
AU - Park, Hyungdal
AU - Shin, Hyun Joon
AU - Cho, Il Joo
AU - Yoon, Eui Sung
AU - Suh, Jun Kyo Francis
AU - Im, Maesoon
AU - Yoon, Euisik
AU - Kim, Yong Jun
AU - Kim, Jinseok
PY - 2011
Y1 - 2011
N2 - In this paper, we report a neural probe which can selectively stimulate target neurons optically through Si wet etched mirror surface and record extracellular neural signals in iridium oxide tetrodes. Consequently, the proposed approach provides to improve directional problem and achieve at least 150/m gap distance between stimulation and recording sites by wet etched mirror surface in V-groove. Also, we developed light source, blue laser diode (OSRAM Blue Laser Diode-PL 450), integration through simple jig for one-touch butt-coupling. Furthermore, optical power and impedance of iridium oxide tetrodes were measured as 200W on 5mW from LD and 206.5k at 1kHz and we demonstrated insertion test of probe in 0.5% agarose-gel successfully. We have successfully transmitted a light of 450nm to optical fiber through the integrated LD using by butt-coupling method.
AB - In this paper, we report a neural probe which can selectively stimulate target neurons optically through Si wet etched mirror surface and record extracellular neural signals in iridium oxide tetrodes. Consequently, the proposed approach provides to improve directional problem and achieve at least 150/m gap distance between stimulation and recording sites by wet etched mirror surface in V-groove. Also, we developed light source, blue laser diode (OSRAM Blue Laser Diode-PL 450), integration through simple jig for one-touch butt-coupling. Furthermore, optical power and impedance of iridium oxide tetrodes were measured as 200W on 5mW from LD and 206.5k at 1kHz and we demonstrated insertion test of probe in 0.5% agarose-gel successfully. We have successfully transmitted a light of 450nm to optical fiber through the integrated LD using by butt-coupling method.
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U2 - 10.1109/IEMBS.2011.6090813
DO - 10.1109/IEMBS.2011.6090813
M3 - Conference contribution
C2 - 22254962
AN - SCOPUS:84055222561
SN - 9781424441211
T3 - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
SP - 2961
EP - 2964
BT - 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 2011
T2 - 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 2011
Y2 - 30 August 2011 through 3 September 2011
ER -