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Metal Electrodes

  1. Metal Electrode Selection Guide for Profile B
    May 01, 2013
    Profile B Microelectrodes These electrodes are sold in packages of 10. Tungsten Profile B Comparison Chart, 76 mm long, 0.216 mm shaft Order code Length  InsulationThickness
  2. Metal Microelectrodes Basics
    April 26, 2013
    Superior microelectrodes for outstanding extracellular recording — tungsten, iridium, platinum-iridium, and Elgiloy® Click here to view the Metal Microelectrode Selection Guide Types of Metal Electrodes WPI offers a large variety of metal electrodes and they come in three basic styles (profiles). The selection guide that follows references the three electrode profiles. In addition, concentric bipolar electrodes are also discussed, as well as some of the options offered for the metal electrodes. NOTE: The electrode diagrams below are not shown to scale.  Profile A  
  3. Metal Microelectrode Selection Guide
    April 26, 2013
    WPI offers an array of metal microelectrodes. In this guide, we will look at introductory assortments, concentric electrodes, profile A, profile B and profile C electrodes. For basic information on these types of metal electrodes, see the Metal Microelectrode Basics page. Links to these related posts appear below this article. Eligoy Steel is a *Cobalt/chromium/nickel alloy. Deciphering Part Numbers With few exceptions, the WPI metal electrodes conform to a part number standard depicted below. For the part number shown, you can determine that: Metal - The electrode is made of platinum iridium. (See the metal codes below.) Length in inches - It is 2" long. Coating Thickness in microns - It has a 3µm coating. Core shaft diameter in millimeters - "B" electrodes with Kapton coating are 0.356mm.(See the core sh
  4. Metal Electrodes Selection Guide for Assortments and Concentric
    April 26, 2013
    Introductory Assortments Each of these assortment kits includes electrodes with different impedance within each style. Use an assortment kit to determine which electrode you need for your experiment. Each box includes the electrodes listed. There are no mix and match assortment kits. Profile A Profile B Profile C ssortments Profile A Comparison Chart 
  5. Metal Electrode Selection Guide for Profile A
    April 26, 2013
    Profile A Metal Microelectrodes Platinum Iridium These electrodes are sold in packages of 10. Order code Length Insulation Thickness Shaft Diameter Nominal Impedance ±20%
  6. Metal Electrode Selection Guide for Profile C
    April 26, 2013
    NOTE: A heat treated tip is ideal for penetrating tough membranes. (It is not recommended for chronic implantation.) This process is performed using a microforge in which the heating element is positioned in close proximity to the tip in order to melt the Parylene-C distal to the exposed metal. It provides a smooth transition and produces better adherence of the Parylene-C to the metal. Both the KT and non-KT electrodes are heat-treatable. The heat treatment is applied only to the parylene coating. The heat melts the parylene so it feathers down close to the shank near where the tip is exposed. This removes the abrupt edge where the parylene has been removed to create the tip exposure. The purpose is to prevent the parylene from delaminating from the electrode during implantation into tissue which could catch on the edge. Heat treatment does not work well in chronic applications, because the feather edge is susceptible to fluid intrusion overtime, which will alter the impedance
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