Abstract
We present an LED-waveguide-based neural probe array with the highest total light power delivery from a single commercial LED. A separable configuration between the LED and the waveguide has been proposed and verified experimentally for a disposable probe tip. The system comprises of a disposable MEMS optrode array and a reusable unit. The optrode array consists of a 4 × 4 array of 6 mm-long optical fibers assembled with thermally reflowed square-shaped glass microlenses. The reusable unit includes a domed top LED and driving circuitry. Measured light delivery efficiency of the optrode array and the total power efficiency of the probe were −10.6 dB and −21.6 dB, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 276-284 |
| Number of pages | 9 |
| Journal | Sensors and Actuators, A: Physical |
| Volume | 273 |
| DOIs | |
| State | Published - 15 Apr 2018 |
Bibliographical note
Funding Information: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), by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2015R1D1A1A09058627), and by the Convergence Technology Development Program for Bionic Arm through the National Research Foundation of Korea (NRF) funded by the Ministry of Science & ICT (2017M3C1B2085310).
Publisher Copyright:
© 2018 Elsevier B.V.
Keywords
- Light Emitting Diode (LED)
- Neural probe
- Neurostimulation
- Optrode