Nanoscale tipping bucket effect in a quantum dot transistor-based counter
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Electronic circuits composed of one or more elements with inherent memory - memristors, memcapacitors and meminductors - offer lower circuit complexity and enhanced functionality for certain computational tasks. Networks of these elements are proposed for novel computational paradigms that rely on information processing and storage on the same physical platform. We show a nanoscaled memdevice able to act as an electronic analogue of tipping buckets that allows reducing the dimensionality and complexity of a sensing problem by transforming it into a counting problem. The device offers a well adjustable, tunable and reliable periodic reset that is controlled by theamounts of transferred quantum dot charges per gate voltage sweep. When subjected to periodic voltage sweeps the quantum dot (bucket) may require up to several sweeps before a rapid full discharge occurs thus displaying period doubling, period tripling and so on between self-governing reset operations.
Hartmann , F , Maier , P , Rebello Sousa Dias , M , Göpfert , S , Castelano , L K , Emmerling , M , Schneider , C , Höfling , S , Kamp , M , Pershin , Y V , Marques , G E , Lopez-Richard , V & Worschech , L 2017 , ' Nanoscale tipping bucket effect in a quantum dot transistor-based counter ' Nano Letters , vol. 17 , no. 4 , pp. 2273-2279 . DOI: 10.1021/acs.nanolett.6b04911
© 2017, American Chemical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at pubs.acs.org / https://doi.org/10.1021/acs.nanolett.6b04911
DescriptionThe authors are grateful for financial support by the European Union (FPVII (2007-2013) under grant agreement no. 318287 LANDAUER), and the Brazilian Agencies FAPESP (grants 2012/13052 - 6, and 2012/51415 - 3), CNPq and CAPES. V. L.-R. acknowledges the support of FAPESP (grant: 2014/02112-3). Y.V.P. was supported by National Science Foundation grant ECCS-1202383.
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