BEOL Electro-Biological Interface for 1024-Channel TFT Neurostimulator with Cultured DRG Neurons
The demand for high-quality neurostimulation, driven by the development of brain-computer interfaces, has outpaced the capabilities of passive microelectrode-arrays, which are limited by channel-count and biocompatibility. This work proposes a back-end-of-line (BEOL) process for 1024channel stimulator with bioelectrodes and waterproof encapsulation to stimulate dorsal root ganglion neurons. We introduce an active-matrix neurostimulator based on n-type low-temperature poly-silicon thin-film transistor, adding PEDOT:PSS and SU-8 as bioelectrodes and encapsulation. This enables precise stimulation of DRG neurons, addressing key challenges in neurostimulation systems.
Authors
- Chen Jiang
- Taoming Guo (ORCID: https://orcid.org/0000-0002-8461-4784)
- H. Zhou (ORCID: https://orcid.org/0000-0002-9153-3675)
- Hanbin Ma (ORCID: https://orcid.org/0000-0002-7629-2287)
- Bowen Liu (ORCID: https://orcid.org/0000-0002-4194-8119)
Institutions
- Suzhou Institute of Biomedical Engineering and Technology (CN)
- Tsinghua University (CN)
Publication Details
- Published
- 2025-03-09
- DOI
- https://doi.org/10.1109/edtm61175.2025.11040178
- Primary Topic
- Neuroscience and Neural Engineering
- Type
- article
- Field-Weighted Citation Impact
- 0.00