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| Mechanism | A word that generally describes the class of materials used for actuation (e.g. Dielectric Elastomer or Conducting Polymer or Carbon Nanotubes). |
| Material | The particular active material used (e.g. Silicone or polypyrrole or Multiwall Carbon Nanotubes). |
| Additive | Additional material additive (e.g. particles to increase dielectric constant or influence mechanical properties). |
| Density (kg/m^3) | Density of the active material. |
| Dielectric Constant | Relative dielectric permittivity. Most relevant in dielectric elastomers, ferroelectric elastomers and other electronic EAPs. |
| Conductivity (S/cm) | Electronic conductivity along the primary direction in which current flows. Not relevant for dielectrics. |
| Young's Modulus (GPa) | The normalized stiffness of the active material along the primary actuation axis. |
| Tensile Strength (MPa) | The stress above which mechanical failure commonly occurs. |
| Strain at Break (%) | The relative elongation at which the material fails. |
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| Form | Fiber, film, tube, bilayer or other geometry. |
| Length (mm) | Length of the active material along the primary axis of actuation. |
| Width (mm) | Width of the active material. |
| Thickness (mm) | Thickness of the active material (not including packaging, separators etc.). |
| Outer Diameter (mm) | The diameter of the active material (in the case of a fiber or tube). |
| Inner Diameter (mm) | The inner diameter of the active material (in the case of a tube). |
| Volume (mm^3) | The volume of active materials used. |
| Number of Strands | If multiple films, fibers or tubes are used, how many of them are there? |
| Turns (turns/cm) | If the active material is wound, how tight is the winding? |
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| Name of Material | What material is used to make electrical contact with the active material? |
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| Solvent Type | The type of solvent in which ions are dissolved (e.g. aqueous, organic, ionic liquid, gel or solid electrolyte). |
| 1st Solvent | The dominant solvent (e.g. aqueous, acetonitrile etc.). |
| 2nd Solvent | In case of a mixture, the second largest component (e.g. ethylene carbonate). |
| Salt | The chemical name for the ions added (e.g. Sodium Chloride or Tetrabutylammonium hexafluorophosphate). |
| Concentration (M) | The salt concentration. |
| Ratio (1st:2nd Solution) | The relative proportions of the first and second solvents. |
| pH | The pH (when aqueous solutions are used). |
| Anion | The anion name (repetition of salt category above). |
| Cation | The cation name (repetition of salt category above). |
| Coating Material | Metal, dielectric or other material that coats the electrode. |
| Isometric or Isotonic | Is the testing done under constant load (isotonic), constant length (isometric) or other? |
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| Type of Cycling | What is the input voltage or current waveform (e.g. Voltage step, voltammetry, swept sine). |
| Voltage Min. (V) | The lowest voltage used in operating the actuator (e.g. 0 V or - 10 V) |
| Voltage Max. (V) | The maximum voltage applied (Peak to Peak). |
| Voltage Difference (V) | The amplitude of the applied voltage. |
| Prestrain (Primary Axis) (%) | The relative amount by which the actuator is pre-stretched along the direction of actuation. |
| Prestrain (Secondary Axis) (%) | The relative amount by which the actuator is pre-stretched perpendicular to the direction of actuation. |
| Constant Load (N) | Magnitude of force applied when operated under fixed load conditions. |
| Frequency (Hz) | Number of actuation cycles per second. |
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| Work Density (kJ/m^3) | The amount of work generated per unit volume of active material (not including packaging, electrodes, electrolyte etc.) |
| Typical Strain (%) | The strain that is typically observed. |
| Operating Stress (MPa) | The load normalized by the cross-section area. |
| Power Density (kW/m^3) | The mechanical power per unit volume. |
| Continuous Power (W/kg) | The average mechanical power under continuous actuation. |
| Cycles (Minimum) | The number of cycles at which strain (or stress under isometric conditions) drops to half of its initial value. |
| Efficiency (%) | The ratio of the mechanical work out to the electrical energy in. |
| Electrochemical Strain Coefficient (%/(C/m^3)) | The amount of strain obtained per unit charge, per unit volume (primarily for conducting polymers.) |
| Charge (mC) | The absolute amount of charge transferred. |
| Capacitance (F) | The total capacitance of the cell. |
| Bandwidth (Hz) | The rate at which the actuator strain (or stress) drops by 50 %. |
| Strain Rate (%/s) | The average strain per unit time. |
| Stress Rate (MPa/s) | The average stress per unit time. |
| Stress Relax Rate (Active) (%/cycle) | The average rate at which stress changes under constant load. |
| Stress Relax Rate (Inactive) (%/cycle) | The peak rate at which stress drops (under isometric conditions). |
| Creep Rate (Active) (%/cycle) | The peak rate of creep during actuation (typically under constant load) |
| Creep Rate (Inactive) (%/cycle) | The maximum rate at which creep is observed under fixed electrical conditions (typically at constant load) |
| Peak Power (W/kg) | The maximum observed mechanical power per unit active material mass |
| Peak Engineering Strain (%) | The maximum strain observed. |
| Average Strain Rate (%/s) | The typical strain rate. |
| Average Stress Rate (MPa/s) | The rate at which stress is changing (primarily calculated for isometric measurements). |
| Charge/Volume (mC/m^3) | The amount of charge transferred per unit volume of active material. |
| Charge/Mass (mC/kg) | The amount of charge transferred per unit mass of active material. |
| Capacitance/Volume (F/m^3) | The charge divided by the voltage, normalized by volume. |
| Electric Field Intensity (V/m) | The intensity of the electric field applied (primarily used to describe actuation in dielectrics). |
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| Source | A reference to the publication from which the data are obtained or, if unpublished, the group from which the data originated. |
| Author | The names of the authors or providers of the data. |
