title: A dual-shank neural probe integrated with double waveguides on each shank for optogenetic applications.
abstract: This paper presents a dual-shank neural probe integrated with double-waveguides on each shank, which enables both optical stimulation and electrical recording. Two 15-μm-thick polymeric (SU-8) waveguides on each neural probe shank have been precisely defined by photolithography with a width of 24 μm and a spacing of 10 μm. The waveguides transmit a light coupled from optical fibers which are placed in the grooves located at the neural probe body. Each shank has 8 iridium recording electrodes which have the area of 11 μm × 13 μm. In front of each waveguide, four recording sites are deployed with a pitch of 100 μm. Blue light (473 nm in wavelength) has been successfully transmitted to the stimulation sites located at the end of the fabricated neural probe tips.
authors.affiliation: Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI 48109, USA.
authors.forename: Maesoon
authors.initials: M
authors.lastname: Im
authors.forename: Il-Joo
authors.initials: IJ
authors.lastname: Cho
authors.forename: Fan
authors.initials: F
authors.lastname: Wu
authors.forename: Kensall D
authors.initials: KD
authors.lastname: Wise
authors.forename: Euisik
authors.initials: E
authors.lastname: Yoon
mesh_terms: D000818:Animals; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D006801:Humans; D009474:Neurons / Q000502:physiology*; D010775:Photic Stimulation / Q000295:instrumentation*; D018511:Systems Integration