If so, where can I find labels of this thickness?
Most RFID labels are as thin as an ordinary label that you would use to put on an envelope. The antenna in a passive tag is a thin piece of copper or aluminum, or it can be printed with metallic ink. The chip is about the size of a grain of pepper, so it makes only a very tiny bump in the surface of the label. If that is not thin enough for your needs, you could contact Arjowiggins Creative Papers, which has created a product called PowerCoat Alive—a paper product with an embedded Near Field Communication (NFC) tag (see Arjowiggins Offers Paper With Embedded NFC RFID Tags). PowerCoat Alive provides users with uniform NFC-tagged paper sheets that they could modify as necessary for use on packaging, labels, business cards or other paper-based products that they wish to track electronically.
Tageos has developed a method for creating transponders without plastic substrates, which makes them even thinner than normal RFID labels (see Tageos Makes RFID Inlays on Paper, Eliminating Plastic Substrate). And Uniqarta, a startup based in Cambridge, Mass., is commercializing technology for embedding an ultrathin RFID inlay in standard paper or packaging rather than laminating it between two paper layers. The solution involves EPC ultrahigh-frequency (UHF) RFID chips that are about 0.02 millimeter (20 microns) thick—one-fifth the thickness of most of the smallest existing ICs, according to the company (see Uniqarta Seeks to Commercialize Solution for Embedding Ultrathin RFID Chips in Paper).
—Mark Roberti, Founder and Editor, RFID Journal
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