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Nanoscale single-electron pumps could serve as the realization of a new quantum standard of electrical current. Here, a silicon quantum dot with tunable tunnel barriers is used as a source of quantized current. By controlling the electrostatic confinement of the dot via purposely engineered gate electrodes, we show that the robustness of the pumping mechanism can be dramatically enhanced and the detrimental...
Students' progress and development in an engineering program is often left unexamined when much of the attention is placed on benchmarking students' performance against absolute standards. This study aims at tracking students' development on program learning outcomes across a two-year associate degree engineering curriculum. Nine Likert-scale items were designed to measure students' perception of...
The presence of Te inclusions degrades the quality of today's CdZnTe (CZT) crystals used for X- and gamma-ray detectors; both their sizes and concentrations densities must be reduced. Over the past years, many researchers proposed using long-term annealing 24 h) under Cd vapor pressure to reduce or even eliminate the inclusions visible under IR microscopes. We annealed detector-grade CZT samples...
Smart grid and micro-grid are global development trend worldwide in which many countries are planning to do. Some of them will take this as a driving force to the green industry development. They would make use of it for carbon emission reduction. In micro-grid, peak demand response, renewable energy and energy efficiency will also play vital roles as well. We may use the smart meters and building...
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