Impedance Measurement

nanoZ

The nanoZ is a computer-based device for multichannel electrode impedance measurement, automated electroplating, site activation, and site rejuvenation, as well as delivering electrical current for lesioning or tissue marking. It uses very low test currents for in vitro or in vivo experiments, and can measure the impedance of a 64-channel electrode in under a minute.



nanoZ User Manual

Hardware Specifications
Number of channels64
Z measurement range1kΩ ~ 100MΩ
Z accuracy & precision1kΩ display resolution ± 1% (10kΩ~15MΩ, 1Hz~2kHz)
Z test current1.4nA RMS (max) bias current 50pA (typ)
Test signalsdefault 1kHz sinusoid waveform, frequency range 1Hz to 4986Hz, arbitrary user-defined waveforms
Electroplate modebipolar constant current
Electroplate range± 12µA, ±5V compliance
Electroplate resolution100nA adjustment step (nom)
LED Indicatorspower, operating mode
EEPROMdevice-specific calibration values
PC interfaceUSB 1.1 or 2.0 compatible
Connectivitytwo Samtec FOLC‐110‐01‐S‐Q 2.5mm phono socket (future I/O) 3rd party electrode adaptors
Weight2.9 oz (82 g)
Dimensions3.2 x 2.8 x 0.47 inches (81 x 70 x 12 mm)

 

 

The nanoZ was specifically designed for multichannel microelectrode arrays. It features extremely low test currents for measuring impedance or electrode impedance spectroscopy (EIS). Several inbuilt electroplating modes are provided for automated electrode impedance matching, activation, and cleaning.


Features

  • 64 channels
  • 1k ~ 100MΩ working range
  • 1Hz ~ 5kHz test frequencies
  • 1kΩ display resolution, 1% accuracy
    • or better for 5k ~ 15MΩ electrodes at test frequencies < 2kHz
  • low (nanoamp) test currents suitable for in vitro or in vivo testing
  • constant current electroplating with ±12μA range, ±5V compliance
  • intuitive graphical user interface
  • software development kit for Matlab