NK Material List We have found 2 records that matches the element you are searching. Please continue to see the details. Select Compound Material Name ID Category Chemical Symbol Element Percentage Temperature / Orientation Polymer 0 Polymer N/A N/A Polyethylene Terephthalate (PET) 0 Polymer N/A N/A Please specify the following parameters for the plot(s) you want to view. Choose a data type for the plot: Refractive Index, n Extinction Coefficient, k n and k Epsiron r Epsiron i Er and Ei Choose a unit for the plot (for the data type of Epsiron r or Epsiron i, eV is the only avaiable unit): µm nm cm-1 eV Hi Powered Data