This paper exploits the unique ambipolar conduction property of graphene field effect transistors to realize a single transistor polarity controllable amplifier. The amplifier is polarity controllable since its small signal gain can be switched between positive and negative modes through proper biasing. Polarity controllable amplifiers can greatly simplify communication circuits in applications...

Electric field induced by charge oscillation has been investigated by simulation of the electric field distribution using the finite-difference frequency-domain method. In addition, the electric field was induced by spatial oscillation of a sample to which a DC voltage was applied. The simulation and evaluation of the electric field verified that the efficiency for inducing the electric field h...

Dc-deflections were recorded with the paraffin gap method from the terminal of isolated single.type spindles in the frog sartorius muscle during ramp-and-hold stimulation. The amplitude of the dc-deflection over 60/lV was independent of the rate of afferent discharge and was little changed after inactivation of the axon terminal by irradiation with an ultraviolet light. The amplitude and the po...

The purpose of this study is to develop a system analyzing cell activity by the dielectrophoresis method. Our previous studies revealed a correlation between the growth activity and dielectric property (Re[K(ω)]) of mouse hybridoma 3-2H3 cells using dielectrophoretic levitation. Furthermore, it was clarified that the differentiation activity of many stem cells could be evaluated by the Re[K(ω)]...

worming: The behaviors of Caenorhabditis (C.) elegans in DC and AC electric fields" (2011). Departmental Papers (MEAM). 278.

With the increasing need to incorporate more complex mixed-signal controller for switched mode power supplies, CMOS compatibility becomes a very important consideration for monolithic DC-DC converters. This paper examines the different power output stage designs and identifies the key device characteristics such as onresistance, gate capacitance, switching speed that ensure optimized power conv...

Dc-dc power converters are employed in a variety of applications, including power supplies for personal computers, office equipment, spacecraft power systems, laptop computers, and telecommunications equipment, as well as dc motor drives. The input to a dc-dc converter is an unregulated dc voltage Vg. The converter produces a regulated output voltage V, having a magnitude (and possibly polarity...

the already multiple DC-links already existing in all propulsion and thruster drives accomplishing for usually more than 80% of the electrical power consumption on electric propulsion vessels. This extension means that we keep all the good and well proven products already used in today’s electric ships like AC generators, inverter modules, AC motors, etc. All main AC SWBDS and transformers are ...