Slot Effect Electrets - CONCEPTCASINO.NETLIFY.APP

Potassium ions in SiO2: electrets for silicon surface... - IOPscience.
Design and performance of a small-scale wind turbine exploiting an.
Theoretical and experimental study of the electromechanical electret.
Slot-effect electrometers with monopolar electrets - NASA/ADS.
Electret webs with charge-enhancing additives - Google Patents.
Making an Electret, or several actually. - overunity.
Anwendung des Energieprinzips auf die Berechnung der Kraft auf den.
Comparative analysis of isothermal decay of the... - AIP Publishing.
Slot‐effect electrometers with monopolar electrets: Review of.
(PDF) Erratum: Slot‐effect electrometers with monopolar electrets [Rev.
Forces and torques acting on plane and cylindrical electrets in slot.
Optimization of an electret-based soft hybrid generator... - IOPscience.
Electrostatic Motors; Their History, Types, And Principles Of Operation.
Erratum: Slot-effect electrometers with monopolar electrets.

Potassium ions in SiO2: electrets for silicon surface... - IOPscience.

An electrostatic generator is a mechanical device that produces continuous electrical current. The knowledge of static electricity dates back to the earliest dawn of civilization but for ages it remained merely an interesting and mystifying phenomenon. Development of electrostatic machines did not begin in earnest till the 18th Century. Electrets are permanently charged dielectrics which are the electrostatic equivalent of permanent magnets.... = 0 (slot effect connection scheme) (3) Then, the relative motion between the. The effect of charged potassium ions on the surface recombination at the oxide-silicon interface was evaluated using photo-conductance decay (PCD) lifetime measurements using a Sinton WCT120 instrument [ 56 ]. These were conducted on 3 × 3 cm 2 samples where K ions had been deposited and driven in at high temperatures.

Design and performance of a small-scale wind turbine exploiting an.

Dielectric materials ABSTRACT A theoretical discussion of forces and torques acting on electrets in slot‐effect transducers of plane and cylindrical geometry is presented. Both bipolar and monopolar electrets are considered. The electrets are assumed to carry arbitrary internal and surface charges.

Theoretical and experimental study of the electromechanical electret.

The U.S. Department of Energy's Office of Scientific and Technical Information. Erratum: Slot‐effect electrometers with monopolar electrets [Rev. Sci. Instrum. 53, 1746 (1982)]... Slot‐effect electrometers with monopolar electrets Article Metrics Views 67. Citations Crossref 0. Web of Science. Electrets are insulators developing a surface potential V s, generally obtained by a corona discharge method. On the upper part stands the elastomeric membrane (②) on which a compliant deformable electrode (③) is applied. When a deformation is applied to the structure, the electric capacitance of the device changes.

Slot-effect electrometers with monopolar electrets - NASA/ADS.

Erratum: Slot‐effect electrometers with monopolar electrets [Rev. Sci. Instrum. 53, 1746 (1982)]. Most electrets are made of amorphous or polycrystalline polymers with a high degree of structural disorder, implying that they have a high concentration of deep and shallow traps. In particular, deep traps are important for good electrets because they can hold the trapped charge carriers (electrons or holes) for a prolonged period of time. Theoretical and experimental investigations of the electromechanical electret slit-effect transducer are presented. After deriving the basic equations of the bidirectional (or reciprocal).

Electret webs with charge-enhancing additives - Google Patents.

Slot‐effect electrometers with monopolar electrets as active elements are, in several aspects, superior to similar electrometers with bipolar electrets. In particular, the sensitivity of electrometers with monopolar electrets does not depend on the electret thickness and on the electret-electrode gap. This motor designed by the author utilizes the slot effect. The rotor of the motor is a carnauba wax electret made of two oppositely polarized half-disks. The motor was built in 1966. PLATE 6 A more practical design of an electret motor incorporates stationary electrets and rotating electrodes. The electrets can be easily withdrawn from the. The force excerted on an electret in a slot-effect transducer, which has been calculated by several authors using different methods and thereby obtaining somewhat different results, is evaluated by a method not yet employed in this problem, namely by direct application of the energy principle.

Making an Electret, or several actually. - overunity.

In this work, all the converters have been achieved according to a "slot effect" configuration ( Figure 10a and [40]) where the electric current flows between the fixed electrodes of the device. We. This paper presents a small-scale airflow energy harvester built on an axial turbine architecture and exploiting an electret-based electrostatic converter. When the airflow velocity is high enough,.

Anwendung des Energieprinzips auf die Berechnung der Kraft auf den.

Electret webs include a thermoplastic resin and a charge-enhancing additive. The charge-enhancing additive is a fused aromatic thiourea, a fused aromatic urea compound, or a combination thereof. The change-enhancing additive may also include a hindered amine light stabilizer compound. The electret webs may be a non-woven fibrous web or a film. The force excerted on an electret in a slot-effect transducer, which has been calculated by several authors using different methods and thereby obtaining somewhat different results, is evaluated by a method not yet employed in this problem, namely by direct application of the energy principle. This method permits to extend the calculation of the force so far performed for neutral surface.

Comparative analysis of isothermal decay of the... - AIP Publishing.

It is well known that fluorocarbon electrets, although thermally very stable, suffer a surface potential decay if exposed to high temperatures. This potential decay is of considerable interest in applications, for example, in the so-called prepolarized microphones.

Slot‐effect electrometers with monopolar electrets: Review of.

You'll find a large attraction-force that pulls the dielectric back into the capacitor (called "slot-effect" in electrostatics.) Pulling out the dielectric is performing work and storing energy. Also, if you separate the parallel plates, the voltage increases, and the stored energy increases faster (as the square of voltage.). The statement that you should 'short circuit' with aluminum foil after making the electret and leave it for several months short circuited like that, and the electret will change polarity during this period, and this reversed polarity can be even stronger than the original charge. That is a pretty odd effect.