Picture of flying drone

Award-winning sensor signal processing research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by Strathclyde researchers involved in award-winning research into technology for detecting drones. - but also other internationally significant research from within the Department of Electronic & Electrical Engineering.

Strathprints also exposes world leading research from the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

Performance of ultra-high-density microelectrode arrays

Gunning, D. E. and Chichilnisky, E. J. and Litke, A. M. and O'Shea, V. and Smith, K. M. and Mathieson, K. (2007) Performance of ultra-high-density microelectrode arrays. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 576 (1). pp. 215-219. ISSN 0168-9002

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

Imaging the electrical output activity of biological cells is important to gain an understanding of how cell networks process information. This has implications for the understanding of brain processing, such as that performed by the retina in encoding the visual scene. The performance and electrical quality of a state-of-the-art high-density 519-microelectrode array, that recorded simultaneously from hundreds of live retinal output cells (ganglion cells) is reported on. The fabrication process for these devices has been optimised and their electrical characteristics examined. The electrode arrays typically exhibit an impedance of 200 kO at 1 kHz and the RMS noise of the whole recording system is 7 mV with a signal to noise ratio of 20:1. With a view to direct stimulation of retinal ganglion cells, a low impedance Z ¼ 300 kO iridium oxide interface capable of delivering large currents Qcap ¼ 4 mC/cm2 to cells was also developed.