Logic gates based on ion transistors

Klas Tybrandt, Robert Forchheimer and Magnus Berggren ()
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Klas Tybrandt: Linköping University, Organic Electronics
Robert Forchheimer: Linköping University
Magnus Berggren: Linköping University, Organic Electronics

Nature Communications, 2012, vol. 3, issue 1, 1-6

Abstract: Abstract Precise control over processing, transport and delivery of ionic and molecular signals is of great importance in numerous fields of life sciences. Integrated circuits based on ion transistors would be one approach to route and dispense complex chemical signal patterns to achieve such control. To date several types of ion transistors have been reported; however, only individual devices have so far been presented and most of them are not functional at physiological salt concentrations. Here we report integrated chemical logic gates based on ion bipolar junction transistors. Inverters and NAND gates of both npn type and complementary type are demonstrated. We find that complementary ion gates have higher gain and lower power consumption, as compared with the single transistor-type gates, which imitates the advantages of complementary logics found in conventional electronics. Ion inverters and NAND gates lay the groundwork for further development of solid-state chemical delivery circuits.

Date: 2012
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DOI: 10.1038/ncomms1869

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