Neural Probes · Q-Trode Series
Tetrode Single-Shank 4-Channel Probe, 3 mm
Four sites clustered at one depth — isolation by amplitude ratio, not a depth profile
A single short shank with sites grouped in tetrodes at intervals, for unit isolation at set depths. Among the 371 probe designs in the design space it sits at the bottom: 4 sites (5th percentile), 3 mm shanks (a common choice — 37 of 363), a 0.05 mm-deep site array (5th percentile), 1,861 sites/mm² (95th percentile) and a 0.15 mm³ neural interface (1st percentile).
Small sites read a local patch at higher impedance, sharpening single-unit isolation, packed densely enough to track a unit across neighbouring sites. The short shank suits superficial targets.
Orders as a probe-plus-package assembly, in 15 package configurations. Silicon 15 or 50 µm thick. Z-coat available. Optical stimulation runs from a separate laser or LED source. Research use only.
SKU prb_qtr--q1x1_tet_3mm_121 · Neural Probes in the webstore
Specifications
| Channels | 4 |
|---|---|
| Shanks | 1 |
| Shank length | 3 mm |
| Site layout | Tetrode |
| Site area | 121 µm² |
| Site pitch | 18 µm |
| Vertical span | 46 µm |
| Substrate | Silicon |
|---|---|
| Site material | Iridium |
| Thickness | 15, 50 µm |
| Neural interface volume | 0.149 mm³ (higher than 1% of 371 designs) |
| Site coverage density | 1,861.1 sites/mm² (higher than 95% of 371 designs) |
| Brain coverage density | 26.8 sites/mm³ (higher than 20% of 371 designs) |