TY - JOUR A2 - Zeng, Wen AU - Filikhin, I. AU - Karoui, A. AU - Vlahovic, B. PY - 2016 DA - 2016/02/04 TI - Nanosensing Backed by the Uncertainty Principle SP - 3794109 VL - 2016 AB - Possibility for a novel type of sensors for detecting nanosized substances (e.g., macromolecules or molecule clusters) through their effects on electron tunneling in a double nanoscale semiconductor heterostructure is discussed. We studied spectral distributions of localized/delocalized states of a single electron in a double quantum well (DQW) with relation to slight asymmetry perturbations. The asymmetry was modeled by modification of the dot shape and the confinement potential. Electron energy uncertainty is restricted by the differences between energy levels within the spectra of separated QWs. Hence, we established a direct relationship between the uncertainty of electron localization and the energy uncertainty. We have shown in various instances that a small violation of symmetry drastically affects the electron localization. These phenomena can be utilized to devise new sensing functionalities. The charge transport in such sensors is highly sensitive to minuscule symmetry violation caused by the detected substance. The detection of the electron localization constitutes the sensor signal. SN - 1687-9503 UR - https://doi.org/10.1155/2016/3794109 DO - 10.1155/2016/3794109 JF - Journal of Nanotechnology PB - Hindawi Publishing Corporation KW - ER -