Electrodes for Research & Development
Item # 102 – Thick Film Interdigitated Finger Electrode
This thick film printed electrode consists of interdigitated gold lines on a 0.6 mm thick alumina substrate. The overall dimensions of the alumina substrate is 15 mm x 15 mm. The electrode is used by spreading material over the interdigitated fingers. The holes in the bonding pads allow wires to be threaded through them as an aid for electrical connection. The gold thick film screen printed electrode fingers are 250 μm wide with 250 μm spacing between them. The 102 can be made in platinum by special request.
Item # 103 and 103a – Thick Film Interdigitated Finger Electrode with heater and temperature detector
This electrode consists of thick film printed interdigitated platinum lines (Item 103 - 250 μm width and spacing, 103a - 350 μm width and spacing ) and platinum resistance temperature detector (RTD) on one side of an alumina substrate and a platinum heater on the other side. The overall dimensions of the alumina is 15 mm x 13 mm (see drawing above). The bonding pads are silver for easier soldering.
Item # 106 –Thin Film Interdigitated Finger Electrodes
This thin film fabricated electrode consists of interdigitated platinum or gold lines on a silicon, Pyrex or highly polished alumina substrate. On silicon substrates there is 3000 Angstrom thick layer of thermally grown, electrically insulating silicon dioxide between the metallic interdigitated fingers and the silicon substrate. The overall dimensions of the substrate are 8 mm x 8 mm. #106 electrodes have 100 micron line/spaces, #106b electrodes have 30 micron line/spaces and #106c electrodes have 50 micron line/spaces between the interdigitated fingers.
Item # 100 – Thick Film 4-Point Probe Electrode
This electrode consists of four thick film gold lines on an alumina substrate. The overall dimensions of the alumina is 12 mm x 10 mm. The thickness of the gold lines is between 10 and 15 microns thick. The electrode is used by spreading material over the four electrodes and then testing the resistivity of the material.
Item # 115 - Thin Gold 4 Point Probe Electrodes
This electrode consists of four thin film sputtered gold electrodes on a highly polished alumina or Pyrex substrate. The overall dimensions of the silicon die are 12 mm x 14 mm. The gold thickness is approximately 2000 Angstroms. Line spacing on this item is 2.5 mm.