Multichannel Systems nanoZ manual - Manual (Page 20)

nanoZ User Manual
16
DC
electroplate
mode
This mode cycles through all (or a subset) of the electrodes on the selected
probe, applying a controlled DC constant current to each site. It has two sub-
modes of operation: fixed plating time per channel; and match impedances
mode, whereby the nanoZ will only advance to the next channel when the
electrode site impedance is lowered to the specified Target impedance.
The DC Electroplate mode has many possible applications, such as:
o plating with gold or other metals to lower electrode site impedances
o deposition of conductive polymers such as PEDOT to simultaneously
lower the electrode site impedance and improve the site charge capacity
o electrode site cleaning
o in vivo or in vitro rejuvenation of electrode sites
o tissue lesioning and electrode track marking
(A) Select the plating mode, either Fixed plating time, or Match impedances.
(B) Set the desired DC plating current. The current can be adjusted from -12uA
(electrode negative) to +12uA (electrode positive) in ~1nA steps by moving the
position of the slider or typing the desired current into the edit box. The Meter has
limited measurement resolution (39mV) and should be considered approximate,
however the calibrated current reading shown in the edit box is accurate to within
±5nA or 5% (whichever is greater).
The nanoZʼs electroplating circuit has a native resolution of ~100nA. To enable smaller
currents and ensure the specified electroplating accuracy, devices shipped prior to April
2012 need to be recalibrated (see Appendix E).
A B
C
D