This method of shifting liquids around uses integrated microelectrodes to create voltage differences along the microchannels.
"Harvesting refers specifically to collecting energy that would otherwise be wasted," said Michael C. McAlpine, an assistant professor of mechanical engineering at Princeton who is developing a rubbery, energy-harvesting piezoelectric material that creates voltage when it bends.
Bit streams generated by the keyboards that indicate what keys have been struck create voltage fluctuations in the grounds, they say….
The filtered power is given to the droop controller to create voltage magnitude E and the frequency ω.
The applied current that is injected into the cells is a fluctuating waveform (combination of Ornstein-Uhlenbeck processes) chosen to create voltage traces that are in-vivo-like in that they fluctuate and explore the entire range of subthreshold voltages.
The signals were passed through an analog circuit that rejected signals at frequencies above 25 Hz (−20 dB per decade) and differentiated signals at lower frequencies to create voltages proportional to horizontal and vertical eye velocity.
Time-varying magnetic field gradients, used for the MR signal spatial encoding, produce large changes in the magnetic flux over short time-periods, creating voltages at the amplifier inputs that appear as artefacts one to three orders of magnitude larger than the EEG signal [Allen et al., 2000].
Together, these reactions created a voltage difference between the electrodes of a little more than 0.53 volts, generating power of a few microwatts, the researchers report in Journal of the American Chemical Society.
A self-biased Vth (threshold voltage) generator circuit creates a voltage equal to the Vth of a CMOS transistor; this voltage is used to generate a current proportional to V2th that, when forced into another transistor, creates a voltage which presents a negative non-linear temperature coefficient.
To perform a Q u (voltage control mode) test, it is necessary to create a voltage disturbance to simulate voltage fluctuation.
