MED Probe (MEA)
Microelectrode array (MEA) with the industry’s lowest-impedance electrodes
The MED Probe has multiple microelectrodes embedded in the center of a transparent glass plate. The surrounding glass (or plastic) cylinder makes the MED Probe a self-contained recording chamber.
The MED Probe features the industry’s lowest-impedance electrodes (10 kΩ at 1 kHz for 50 μm electrodes). It provides excellent signal-to-noise ratio and capabilities of stimulation.
| Specifications | |
|---|---|
| Substrate/Chamber | |
| Substrate | Glass, T = 0.7 mm |
| Conducting layer | Indium tin oxide (ITO), 0.15 μm |
| Insulation layer | Acrylic resin (to be replaced with Polyimide when inventry runs out) |
| Cylindrical chamber | Glass (OD:25 / ID:22 mm) Acrylic resin (for Multi-well Probe) |
| Substrate size | |
| MED Probes (all types) | 50 x 50 mm |
| MED Probe 16 | 30 x 40 mm |
| MED Multi-well Probe | 100 x 35 mm |
| Recording Electrodes | |
| Material | Platinum Black |
| Impedance | |
| 50 μm electrodes | 10 kΩ (Typ.) |
| 20 μm electrodes | 15 kΩ (Typ.) |
| (1 kHz, 50 mV applied sinusoidal wave) | |
| Maximum Stimulus Output | |
| Current-driven | ±200 μA (t=300 μS) |
| Voltage-driven | ±1V |
| Reference Electrodes | |||
| Material | Platinum Black | ||
| Type | Size | Number of electrodes / chamber (well) | Total impedance (Typ) / chamber (well) (f=1 kHz) |
| A | 100 μm | 4 | 550 Ω |
| B | 200 μm | 4 | 550 Ω |
| B (1) | 200 μm | 1 | 2.2k Ω |
| B (2) | 200 μm | 2 | 1.1k Ω |
| C | φ100 μm | 16 | 550 Ω |
| D | φ100 μm | 16 | 550 Ω |
| D (2) | φ100 μm | 8 | 1.1k Ω |
| E | 200 μm | 16 | 300 Ω |
