Super User The LEIS470 allows spatially resolved impedance measurements to be made, combining established principles of EIS measurements with BioLogic’s unique Model 470 scanning probe technology and has been designed to provide a totally integrated spatially resolved measurement system. The principles of LEIS are similar to those employed in traditional bulk EIS, in that a small sinusoidal voltage perturbation is applied to a working electrode sample and the resulting current is measured to allow the calculation of the impedance. However, rather than measure the bulk current, a small electrochemical probe is scanned close to the surface, measuring the local current in the electrolyte. Producing area maps over a sample at a single frequency has never been easier. The LEIS470 also allows the user to make galvanic or bulk impedance measurements simply by choosing which mode the potentiostat is operating in, and the software does the rest. M470 is available with a choice of potentiostat/galvanostat/FRAs: in place of the 3300, which is built-in the M470, the SP-300 can now be used with the M470. OptionsSpecificationsAccessoriesDocuments SP-300 + M470Read more Potentiostat Compliance voltage: ±12 V Applied potential: ±10 V FSR Resolution: 32-bit (4.7 nV) Measured potential: ±10 V FSR Resolution: 24-bit (1.2 μV) Current ranges: 10-decades 1 nA to 1 A Maximum current: 500 mA Current resolution: 23.8 fA Accuracy: <0.5% Floating capability Standard Cell connections 2, 3 or 4 Maximum ADC sample rate: 4 MHz Maximum ADC resolution: 24-bit Minimum pulse duration: 100 μs Scan rate: 1 μV/s to 200 V/s Electrometer Impedance: 10¹³ Ω II 7 pF typical Bias current: 1 pA typical Bandwidth: 1 MHz EIS Capability Frequency range: 1 µHz to 1 MHz Analyser accuracy: 0.1%, 0.1° Frequency resolution: 66 nHz Mode Single sine, Multisine, FFT analysis Positioning system specifications Stepper Motors Scan Range (x,y,z): 110 mm x 110 mm x 110 mm Minimal step size on all axes: 20 nm Closed loop positioning linear zero hysteresis encoder with direct real-time readout of displacement in x, y and z Linear position encoder resolution: 20 nm. Max. scan speed: 10 mm/s Measurement resolution: 32-bit decoder @ up to 40 MHz Piezoelectric element (for z axis only) Vibration range 20 nm – 2 µm peak to peak with 1 nm increments Min. vibration resolution: 0.12 nm calculated (16-bit DAC on 4 µm) Piezo crystal extension: 100 µm Positioning resolution: 0.09 nm calculated (20-bit DAC on 100 µm) Read more Environmental TriCell™ Long working distance optical video microscope (VCAM3) 3D shaded surface rendering software (3DIsoPlot™) MIRA software for data analysis and visualisation Read more M470 – LEIS Support M470 Brochure Products Catalog Accessories Catalog Read more
