Electrochemical measurements combined with xyz translation stage

Description:
Simultaneous control of the xyz translation stage and the electrochemical interface by computer via a program developed on Testpoint software.	Electrochemical Plexiglas cell and a xyz translation stage to control the relative position and displacement of an object with respect to a disk working electrode.	Electrochemical interface coupled with a Frequency Response Analyzer (FRA) in order to study the DC or the AC response of the electrochemical cell.
Example of application: Study of the variations of the flow of primary current to one or several disk electrodes due to an insulating or a conducting sphere, Comparison between the experimental measurements and the predicted variations calculated by the collocation method developed by Jan Fransaer. That work is part of the project aiming at developing a particle sensor able to detect in a solution the presence and the motion of particles in the vicinity of an electrochemical probe made of several microdisk electrodes. The principle of detection is based on the variations of the electrolyte resistance measured on the microelectrodes and due to the presence of the particles.

Technical details:
Solartron SI 1287 Electrochemical interface
Measurement configuration
	Working electrode	resistor range : 0.1 ohm to 1 Mohm full scale current ranges : 2 A to 200 nA
	Counter electrode	Output voltage ±30 V
	Reference electrode	Input impedance > 10 GW, Capacitance : 50 pF, Current < 1 nA
Polarisation	DC polarisation and sweep, analogue or stepped ramp, ramp rate : 0.1 mV/s to 100 V/s
Solartron 1255 H.F. Frequency Response Analyzer
Generator
	Waveform	sine, Frequency range : 10 µHz to 20 MHz
	Amplitude	< 10 MHz 0 to 3 Vrms, > 10 MHz 0 to 1 Vrms
	Resolution	5 mV
	DC bias	range -40.95 V to 40.95 V, resolution: 10 mV, Max. cur.: 100 mA
Analyzers
	Two independent analyzers operating in parallel. Range Sensitivity Full scale peak input Com. Mode rejected 30 mV 300 mV 30 mV 1 µV 10 µV 100 µV 45 mV 500 mV 5 V 5 V 5 V 5 V Input Impedance : 1 Mohm
XYZ translation stage
	DC motor controller C-812 Physik Instrumente Positioning and motion control via 3 DC-motors.
	X and Y directions (horizontal)	minimal step : 8.10-3 µm
	Z direction (vertical)	minimal step : 6.10-2 µm
Setup control by PC via parallel port IEEE Interface
Programming by Testpoint software

 

Room: 01.19

 

More Technical information: Techinfo@mtm.kuleuven.be

 

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