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Methods to detect DC bus current in order to reconstruct three-phase currents have a well-known problem of short DC pulse duration. To expand the pulse duration, several pulse width modulation (PWM) modification techniques have been proposed. The "Half Pulse Shift (HPS) method is very promising because it has both robustness against detection errors that occur due to current ripple and low acoustic...
Carbon nanotubes (CNTs) are potentially useful for developing functional nanodevices such as thermal probes, flow sensor arrays, and AFM probes. Controlling the growth position of CNTs grown by chemical vapor deposition (CVD) is crucial to fabrication of these nanodevices. We propose an easy, non-lithographic process of making CNT sensor probes using CVD. Growth positions of CNTs were precisely controlled...
We used Langmuir–Blodgett films including iron atoms as a catalytic metal material for carbon nanotube (CNT) growth through chemical vapor deposition. We have found a new form of nanotube growth, which we call a giant carbon nanotube construction (GNC). The GNC seems to be a self-assembled knitted structure by carbon nanotubes. The GNC has thin (5 μm in diameter) and long (100 μm in length) structure...
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