Robust optimal design of quantum electronic devices
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Ociel Morales was supported by CONACyT (Consejo Nacional de Ciencia y Tecnología, Mexico) (Grant no. 726714), under programMovilidad en el Extranjero (291062). Francisco Periago was supported by Ministerio de Economía y Competitividad (Spain) (Projects DPI2016-77538-R and MTM2017-83740-P) and Fundación Séneca (Agencia de Ciencia y Tecnología de la Región de Murcia (Spain)) (19274/PI/14). José A. Vallejo was supported by a CONACyT Project CB-179115.Fecha de publicación
2018-04-05Editorial
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MORALES, Ociel, PERIAGO ESPARZA, Francisco and VALLEJO José A. , “Robust Optimal Design of Quantum Electronic Devices,” Mathematical Problems in Engineering, vol. 2018, Article ID 3095257, 10 pages, 2018. https://doi.org/10.1155/2018/3095257.Palabras clave
Robust optimal designNanoelectronics
Stochastic collocation methods
WKB approximation
Resumen
We consider the optimal design of a sequence of quantum barriers in order to manufacture an electronic device at the nanoscale such that the dependence of its transmission coefficient on the bias voltage is linear. The technique presented here is easily adaptable to other response characteristics. The transmission coefficient is computed using the Wentzel-Kramers-Brillouin (WKB) method, so we can explicitly compute the gradient of the objective function. In contrast with earlier treatments, manufacturing uncertainties are incorporated in the model through random variables and the optimal design problem is formulated in a probabilistic setting. As a measure of robustness, a weighted sum of the expectation and the variance of a least-squares performance metric is considered. Several simulations illustrate the proposed approach.
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