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Navigation: Welcome to DigiElch! > IMP-Experiment Document

Tab-Window: GAMRY Experiments

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Ribbon Bar: Menu Commands

RibbonBarMess_IMP

Command Group: Active Experiment

•Command: Edit EditDuplicate
Edit the parameters associated with the active experiment.

•Command: Run RunIMP
Runs a IMP-experiment for the specified scan and experimental parameters.

•Command: Measure IR-Drop & Run
Determines the uncompensated ohmic resistance, Ru (Ohm), and runs an IMP-experiment setting the IR-compensation to the highest possible value ≤ Ru (Ohm). Note, however, that IR-compensation is only applied for the DC-Signal. It will be switched of just before the AC-signal is started.

•Command: IR-Drop IRDrop
Performs an AC (impedance) experiment from which the uncompensated ohmic resistance, Ru (Ohm), and the double layer capacity, Cdl (F), of the electrode is determined.

•Command: Simulated Background Correction ToolIMP
Eliminates the effect of Ru (Ohm) and Cdl (F) from the experimental impedance data.

•Command: Circles PlotCirclesIMP
The active current curve is plotted in the form of open circles.

•Command: Filled Circles
The active current curve is plotted in the form of filled circles.

•Command: Plot Graph
Display data obtained by means of Min/Max Info (or by selecting a a particular current point by double clicking on the active current curve) as function of scan rate, electrode size, species concentration etc. The graph is displayed in the Tab-Window: Plot Graph.

•Command: Compute
Opens a dialog box that enables the user to compute data from Screen Info.

Command Group: Data Exchange

•Clipboard Command: Copy
Copy the active experiment and put the copy on the clipboard.

•Clipboard Command: Cut
Cut the active experiment and put it on the clipboard.

•Clipboard Command: Paste
Paste clipboard content into the Tab-Window: Experiments.

•RAM_Disk Command: RAM-Disk
Opens a dialog box showing the actual content of the RAM-Disk. The RAM-Disk stores data in use-file format. It can be used for importing experiments from the RAM-Disk into the Tab-Window: Experiments where they can be used as target curves in a Data Fitting Project. Note that the Tab-Window: Experiments enables the user to modify the experimental parameters before subjecting them to Data Fitting. It cannot be accomplished when doing the Data Fitting using directly the experiments measured in the Tab-Window: GAMRY-Experiments.

•RAM-Disk Command: Export ExportRAM
Exports the active experiment in use-format and stores the use-file in the RAM-Disk.

•RAM-Disk Command: Export all Experiments to RAM-Disk
Exports all experiments shown in the Experiments-window in use-format and stores the use-files in the RAM-Disk.

•File Command: Export Export
Exports the active experiment as use- or txt- file analogously to exporting a simulation.

•File Command: Export all Experiments
Exports all experiments as use- or txt-files analogously to exporting all simulations.

tipbulb Note that the export of data in use-format is only available when selecting the Option: Plot ZI vs. ZR. The export of the remaining current components can be done only as txt-file by selecting the desired plotting option before exporting the data.

Command Group: Display

•Command: Next Next_Previous
The current curve referring to the next experiment is activated.

•Command: Previous
The current curve referring to the previous experiment is activated.

•Command: Delete Active Experiment DeleteExp
Deletes the active experiment.

•Command: Delete All Experiments
Deletes all experiments shown in the Tab-Window: Experiments.

•Command: Zoom Zoom_Unzoom
Zooms the screen display by pressing down the left mouse button and draw a rectangle around the region which is to be zoomed. The zoom command can be repeatedly applied.

•Command: Unzoom
Undo the zoom command.

•Command: Refresh Screen
Removes Min/Max-Info and redraws the screen display.

•Option: Plot ComboIMPPlot

oZI vs. ZR
Plots the imaginary part of the impedance, ZI, as function of the real part of the impedance, ZR.

oZ vs. 1/sqrt(ω)
Plots the real and imaginary part of the impedance as function of the 1/sqrt(ω) where w is the angular frequency, ω = 2πf.

oCot(Φ) vs. sqrt(ω)
Plots the cotangent of the phase angle, Φ, as function of sqrt(ω) where ω is the angular frequency, ω = 2πf.

ZI vs. ZR

Z vs. 1/sqr(w)

Cot(phi) vs. sqrt(w)

Command Group: Potentiostat

•Command: Connect Connect
If a GAMRY potentiostat is plugged in the USB port of a computer running DigiElch this command connects the potentiostat with DigiElch.

Summary: Play Video

Using DigiElch for conducting electrochemical Measurements. Part I.

tipbulb The measurements shown in this video clip were conducted on mercury drops generated by the Controlled Growth Mercury Electrode (BASi).

During the download of the video clip the scrolling of this page may be disabled!

The following Topics demonstrated for CV-Experiments are shown in another video clip:

•Continuation of the experiments shown in Part I

•Run a series of CV-Experiments using different scan rates

•Apply Background Correction by subtracting the experimentally measured background current

•Use background-corrected CVs directly for Data Fitting