Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이향운 | * |
dc.contributor.author | 전상범 | * |
dc.contributor.author | 지창현 | * |
dc.date.accessioned | 2022-08-02T16:30:04Z | - |
dc.date.available | 2022-08-02T16:30:04Z | - |
dc.date.issued | 2022 | * |
dc.identifier.issn | 1741-2560 | * |
dc.identifier.issn | 1741-2552 | * |
dc.identifier.other | OAK-31856 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/261616 | - |
dc.description.abstract | Objective. This paper presents a conventional light emitting diode (LED) and polymer waveguide coupled silicon optrode array. Approach. Unique lens design at the waveguide inlet enables a high light coupling efficiency with a single LED light source, and provides small power consumption compatible with a wireless optogenetic neuromodulation system. To increase the light intensity at the waveguide tip, a lensed waveguide is fabricated with epoxy-based photoresist SU-8, which has a plano-convex lens shape at the waveguide inlet to focus the light in the horizontal direction. In addition, a cylindrical lens is assembled in front of the waveguide inlet to focus the source light in the vertical direction. Main results. The glass cylindrical lens and SU-8 plano-convex lens increased the light coupling efficiency by 6.7 dB and 6.6 dB, respectively. The fabricated 1 x 4 array of optrodes is assembled with a single LED with 465 nm wavelength, which produces a light intensity of approximately 2.7 mW mm(-2) at the SU-8 waveguide outlet when 50 mA input current is applied to the LED. Each optrode has four recording electrodes at the SU-8 waveguide outlet. The average impedance of the iridium oxide (IrO (x) ) electroplated recording electrodes is 43.6 k omega. Significance. In-vivo experiment at the hippocampus region CA1 and CA2 demonstrated the capability of optical stimulation and neural signal recording through the LED and SU-8 waveguide coupled silicon optrode array. | * |
dc.language | English | * |
dc.publisher | IOP Publishing Ltd | * |
dc.subject | optogenetics | * |
dc.subject | MEMS | * |
dc.subject | silicon optrode | * |
dc.subject | LED | * |
dc.subject | SU-8 waveguide | * |
dc.subject | in-vivo | * |
dc.title | Silicon optrode array with monolithically integrated SU-8 waveguide and single LED light source | * |
dc.type | Article | * |
dc.relation.issue | 4 | * |
dc.relation.volume | 19 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.journaltitle | JOURNAL OF NEURAL ENGINEERING | * |
dc.identifier.doi | 10.1088/1741-2552/ac7f5f | * |
dc.identifier.wosid | WOS:000827834200001 | * |
dc.identifier.scopusid | 2-s2.0-85134721018 | * |
dc.author.google | Ryu, Daeho | * |
dc.author.google | Lee, Youjin | * |
dc.author.google | Lee, Yongseung | * |
dc.author.google | Lee, Yena | * |
dc.author.google | Hwang, Seoyoung | * |
dc.author.google | Kim, Yong-Kweon | * |
dc.author.google | Jun, Sang Beom | * |
dc.author.google | Lee, Hyang Woon | * |
dc.author.google | Ji, Chang-Hyeon | * |
dc.contributor.scopusid | 이향운(34667959700) | * |
dc.contributor.scopusid | 전상범(15843339100) | * |
dc.contributor.scopusid | 지창현(7202015390) | * |
dc.date.modifydate | 20240322125603 | * |