Nanoscale Tipping Bucket Effect in a Quantum Dot Transistor-Based Counter

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Hartmann, F. ; Maier, P. ; Rebello Sousa Dias, M. ; Goepfert, S. ; Castelano, L. K. ; Emmerling, M. ; Schneider, C. ; Hoefling, S. ; Kamp, M. ; Pershin, Y. V. ; Marques, G. E. ; Lopez-Richard, V. ; Worschech, L.

• Tipo de documento: Artigo Científico
• Fonte: Nano Letters; v. 17, n. 4, p. 2273-2279, APR 2017.
• Citações Web of Science: 3

Resumo

Electronic circuits composed of one or more elements with inherent memory, that is, 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 the amounts 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 occurs thus displaying period doubling, period tripling, and so on between self-governing reset operations. (AU)

• Processo FAPESP: 14/02112-3 - Fenômenos ópticos e de transporte em nano-dispositvos
• Beneficiário: Victor Lopez Richard
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/13052-6 - Propriedades de transporte e computação quântica em nanoestruturas
• Beneficiário: Leonardo Kleber Castelano
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/51415-3 - Network for nano-optics and nano-electronics
• Beneficiário: Victor Lopez Richard
• Linha de fomento: Auxílio à Pesquisa - Regular