{"id":2193,"date":"2013-10-05T02:36:46","date_gmt":"2013-10-05T06:36:46","guid":{"rendered":"http:\/\/pages.vassar.edu\/ltt\/?p=2193"},"modified":"2013-10-09T16:54:11","modified_gmt":"2013-10-09T20:54:11","slug":"6-data-update","status":"publish","type":"post","link":"https:\/\/pages.vassar.edu\/ltt\/?p=2193","title":{"rendered":"6 – Data Update"},"content":{"rendered":"

Our project started ambitiously with the goal of amplifying NFC signals, or reversing the nullification of NFC that occurs when a chip is backed with metal. Unfortunately we could not acquire thin enough materials (such as permalloy or ferrite foil\/film) to properly test whether this was possible. We then pivoted and decided to test the range of data transfers when the NFC chip was backed with various materials of different electromagnetic permeability.<\/p>\n

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<\/pre>\n
Establish an average distance of transfers from<\/p>\n
Samsung NFC NFC on Li-ion battery
\n<\/strong>to
\n3.8cm Circular RapidNFC NTAG203
\n<\/strong>with
\nno backing<\/strong><\/p>\n
 <\/p>\n
Trials<\/em><\/p>\n
    \n
  1. 3.5cm<\/li>\n
  2. 4.0cm<\/li>\n
  3. 3.7cm<\/li>\n
  4. 3.7cm<\/li>\n
  5. 3.8cm<\/li>\n
  6. 4.0cm<\/li>\n
  7. 3.7cm<\/li>\n
  8. 3.5cm<\/li>\n
  9. 3.3cm<\/li>\n
  10. 3.8cm<\/li>\n
  11. 3.6cm<\/li>\n
  12. 3.8cm<\/li>\n
  13. 3.3cm<\/li>\n
  14. 3.9cm<\/li>\n
  15. 3.5cm<\/li>\n
  16. 3.8cm<\/li>\n
  17. 3.9cm<\/li>\n
  18. 3.3cm<\/li>\n
  19. 3.3cm<\/li>\n
  20. 3.5cm<\/li>\n<\/ol>\n
    Avg. <\/b>3.645cm<\/strong><\/p>\n
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<\/pre>\n
    Establish an average distance of transfers from
    \nSamsung NFC NFC on Li-ion battery
    \n<\/strong>to
    \n3.8cm Circular RapidNFC NTAG203
    \n<\/strong>with
    \n.9mm stainless steel backing<\/strong><\/p>\n
     <\/p>\n
    Trials<\/em><\/p>\n
      \n
    1. No Transfer<\/li>\n<\/ol>\n
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<\/pre>\n
      Establish an average distance of transfers from<\/p>\n
      Samsung NFC NFC on Li-ion battery
      \n<\/strong>to
      \n3.8cm Circular RapidNFC NTAG203
      \n<\/strong>with
      \n10cm iron backing
      \n<\/strong><\/p>\n
      Trials
      \n<\/em><\/p>\n
        \n
      1. 1.9<\/li>\n
      2. 2<\/li>\n
      3. 1.4<\/li>\n
      4. 1.1<\/li>\n
      5. 1.6<\/li>\n
      6. 1.8<\/li>\n
      7. 1.2<\/li>\n
      8. 1.1<\/li>\n
      9. 1.5<\/li>\n
      10. 1.7<\/li>\n
      11. 1.6<\/li>\n
      12. 2.2<\/li>\n
      13. 1.9<\/li>\n
      14. 2.3<\/li>\n
      15. 2.4<\/li>\n
      16. 2.1<\/li>\n
      17. 1.7<\/li>\n
      18. 1.6<\/li>\n
      19. 1.5<\/li>\n
      20. 1.8<\/li>\n<\/ol>\n
        Avg.\u00a01.72cm<\/strong><\/p>\n
        +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<\/pre>\n
        Samsung NFC NFC on Li-ion battery
        \n<\/strong>to
        \n3.8cm Circular RapidNFC NTAG203
        \n<\/strong>with
        \n1.2 cm glass backing
        \n<\/strong><\/p>\n
        Trials<\/em><\/p>\n
          \n
        1. 4.1<\/li>\n
        2. 3.5<\/li>\n
        3. 3.7<\/li>\n
        4. 4<\/li>\n
        5. 4.5<\/li>\n
        6. 3<\/li>\n
        7. 4.2<\/li>\n
        8. 4.3<\/li>\n
        9. 4<\/li>\n
        10. 4<\/li>\n
        11. 4.1<\/li>\n
        12. 4.7<\/li>\n
        13. 4.5<\/li>\n
        14. 4.1<\/li>\n
        15. 4.2<\/li>\n
        16. 4.2<\/li>\n
        17. 3.8<\/li>\n
        18. 4.3<\/li>\n
        19. 4.5<\/li>\n
        20. 4.6<\/li>\n<\/ol>\n
          Avg. 4.115cm<\/strong><\/p>\n
          +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<\/pre>\n
          Samsung NFC NFC on Li-ion battery
          \n<\/strong>to
          \n3.8cm Circular RapidNFC NTAG203
          \n<\/strong>with
          \n16mm ferrite backing
          \n<\/strong><\/p>\n
          Trials<\/em><\/p>\n
            \n
          1. 2.1<\/li>\n
          2. 2.4<\/li>\n
          3. 2<\/li>\n
          4. 1.8<\/li>\n
          5. 2<\/li>\n
          6. 1.9<\/li>\n
          7. 2<\/li>\n
          8. 2.2<\/li>\n
          9. 2.4<\/li>\n
          10. 1.7<\/li>\n
          11. 2.1<\/li>\n
          12. 1.9<\/li>\n
          13. 1.7<\/li>\n
          14. 2<\/li>\n
          15. 1.5<\/li>\n
          16. 1.9<\/li>\n
          17. 2.1<\/li>\n
          18. 2.0<\/li>\n
          19. 1.8<\/li>\n
          20. 2.1<\/li>\n<\/ol>\n
            Avg.\u00a01.98cm<\/strong><\/p>\n
            +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<\/pre>\n
            Samsung NFC NFC on Li-ion battery
            \n<\/strong>to
            \n3.8cm Circular RapidNFC NTAG203
            \n<\/strong>with
            \nWood backing <\/strong><\/p>\n
            Trials<\/em><\/p>\n
              \n
            • \u00a0 \u00a0 \u00a01. \u00a03.2<\/li>\n<\/ul>\n
                \n
              1. 3.2<\/li>\n
              2. 3<\/li>\n
              3. 2.8<\/li>\n
              4. 2.9<\/li>\n
              5. 2.7<\/li>\n
              6. 2.4<\/li>\n
              7. 3.6<\/li>\n
              8. 3.8<\/li>\n
              9. 3.4<\/li>\n
              10. 3.6<\/li>\n
              11. 3<\/li>\n
              12. 3.9<\/li>\n
              13. 3.7<\/li>\n
              14. 3.9<\/li>\n
              15. 3.3<\/li>\n
              16. 3.5<\/li>\n
              17. 3.9<\/li>\n
              18. 3.5<\/li>\n
              19. 3.2<\/li>\n<\/ol>\n
                Avg. 3.325cm<\/strong><\/p>\n
                +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<\/pre>\n
                \u00a0<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"
                Our project started ambitiously with the goal of amplifying NFC signals, or reversing the nullification of NFC that occurs when a chip is backed with metal. Unfortunately we could not acquire thin enough materials (such as permalloy or ferrite foil\/film) to properly test whether this was possible. We then pivoted and decided to test the […]<\/p>\n","protected":false},"author":2186,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2193","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/pages.vassar.edu\/ltt\/index.php?rest_route=\/wp\/v2\/posts\/2193","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pages.vassar.edu\/ltt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pages.vassar.edu\/ltt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pages.vassar.edu\/ltt\/index.php?rest_route=\/wp\/v2\/users\/2186"}],"replies":[{"embeddable":true,"href":"https:\/\/pages.vassar.edu\/ltt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2193"}],"version-history":[{"count":8,"href":"https:\/\/pages.vassar.edu\/ltt\/index.php?rest_route=\/wp\/v2\/posts\/2193\/revisions"}],"predecessor-version":[{"id":2251,"href":"https:\/\/pages.vassar.edu\/ltt\/index.php?rest_route=\/wp\/v2\/posts\/2193\/revisions\/2251"}],"wp:attachment":[{"href":"https:\/\/pages.vassar.edu\/ltt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2193"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pages.vassar.edu\/ltt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2193"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pages.vassar.edu\/ltt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2193"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}