Matrix Array Series
Hardware
A Matrix Array is a silicon 3D probe platform: several 32-site 2D arrays are installed in slots on a platform and connected through a flexible cable to percutaneous connectors, so the array designs and the spacing between them are chosen independently, at 64 to 256 channels and to 10 mm deep.
Unlike a multi-shank probe cut from one wafer, the arrays in a platform need not be the same design, and one slot can take an ECoG grid. Platform spacing is set at order, 300 to 1,000 µm, and sets the sampled volume: about 1.5 mm³ at 300 µm and 5.0 mm³ at 1,000 µm with the same arrays and channel count. Each 2D array is a separate penetration, so the surgical approach is planned across the whole footprint. Catalog 2D arrays have 1 to 4 shanks at 2 to 12 mm, with 177, 413 or 703 µm² iridium sites on 50 µm silicon. The passive and Activus packages are under Matrix package.
Records and stimulates. Research use only.
Typical values
| 2D array designs, catalog | 29 |
|---|---|
| Sites per 2D array | 28 to 64 |
| Shanks per array | 1 to 4 |
| Shank length | 2 to 12 mm |
| Site area | 177 to 703 µm² |
| Assembled 3D platform | 64 to 256 channels; 32 catalog probes tagged 3D |