Conferences related to Electrets

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2020 IEEE Photovoltaic Specialists Conference (PVSC)

Promote science and engineering of photovoltaic materials, devices, systems and applications


2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII)

The world's premiere conference in MEMS sensors, actuators and integrated micro and nano systems welcomes you to attend this four-day event showcasing major technological, scientific and commercial breakthroughs in mechanical, optical, chemical and biological devices and systems using micro and nanotechnology.The major areas of activity in the development of Transducers solicited and expected at this conference include but are not limited to: Bio, Medical, Chemical, and Micro Total Analysis Systems Fabrication and Packaging Mechanical and Physical Sensors Materials and Characterization Design, Simulation and Theory Actuators Optical MEMS RF MEMS Nanotechnology Energy and Power


2019 IEEE 17th International Symposium On Electrets (ISE)

Electrets and related phenomena are at the frontier of both fundamental scientific and technological interest. The advent of additive manufacturing also opens up new challenges in this field, which can aid solving many process-related challenges and bring about new ways of manufacturing. The huge success of device applications of electrets in the past can expand on novel applications in energy harvesting, bioelectrical stimulation, new sensors and actuators, device and components and characterisation techniques. The ISE conference series is a unique meeting opportunity for scientists and engineers from all over the world working in the field of electrical engineering, manufacturing and process engineering, materials science and engineering, condensed matter physics and chemistry. It provides a platform for interdisciplinary discussions, debate and dialogues on recent advances in research, development and applications.


2019 IEEE 28th International Symposium on Industrial Electronics (ISIE)

The conference will provide a forum for discussions and presentations of advancements inknowledge, new methods and technologies relevant to industrial electronics, along with their applications and future developments.


2019 IEEE International Ultrasonics Symposium (IUS)

The conference covers all aspects of the technology associated with ultrasound generation and detection and their applications.


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Periodicals related to Electrets

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Communications, IEEE Transactions on

Telephone, telegraphy, facsimile, and point-to-point television, by electromagnetic propagation, including radio; wire; aerial, underground, coaxial, and submarine cables; waveguides, communication satellites, and lasers; in marine, aeronautical, space and fixed station services; repeaters, radio relaying, signal storage, and regeneration; telecommunication error detection and correction; multiplexing and carrier techniques; communication switching systems; data communications; and communication theory. In addition to the above, ...


Dielectrics and Electrical Insulation, IEEE Transactions on

Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.


Electrical Insulation Magazine, IEEE

The magazine covers theory, analysis, design (computer-aided design), and practical implementation of circuits, and the application of circuit theoretic techniques to systems and to signal processing. Content is written for the spectrum of activities from basic scientific theory to industrial applications.


Electron Device Letters, IEEE

Publishes original and significant contributions relating to the theory, design, performance and reliability of electron devices, including optoelectronic devices, nanoscale devices, solid-state devices, integrated electronic devices, energy sources, power devices, displays, sensors, electro-mechanical devices, quantum devices and electron tubes.


Electron Devices, IEEE Transactions on

Publishes original and significant contributions relating to the theory, design, performance and reliability of electron devices, including optoelectronics devices, nanoscale devices, solid-state devices, integrated electronic devices, energy sources, power devices, displays, sensors, electro-mechanical devices, quantum devices and electron tubes.


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Most published Xplore authors for Electrets

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Xplore Articles related to Electrets

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Photorectifier based on a combination of a photoconductor and an electret

1960 IEEE International Solid-State Circuits Conference. Digest of Technical Papers, 1960

None


Integrated active speech network for subscriber set application

1982 IEEE International Solid-State Circuits Conference. Digest of Technical Papers, 1982

A bipolar integrated speech network providing DTMF and high impedance microphone inputs, regulated 3V output together with 2-4 wire conversion, balance and 7dB of loop length compensation for use in normal or subscriber carrier modes of operation, will be described.


X-ray analysis of electrets

1985 5th International Symposium on Electrets (ISE 5), 1985

It is proposed to study the mechanism of the formation and decay of electrets in some non-polar inorganic polycrystalline and amorphous dielectrics. The formation of electrets in these materials under different conditions of sample temperatures polarizing fields and cooling rates will be experimentally pursued. The decay of these electrets both in the open circuit and closed circuit conditions are to ...


Fully integrated 500uW speech detection wake-up circuit

Proceedings of 2010 IEEE International Symposium on Circuits and Systems, 2010

Speech analysis requires substantial computation. It is desirable to run this analysis only when needed and at other times to go to a low power state. Here we propose a self-biased low power speech detection wake up circuit which interfaces directly to standard electret microphones. The speech detector includes a microphone preamplifier, a power extraction squaring circuit, a bandpass filter ...


Electrostatic subtraction radiography

Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1983, 1983

A simple on-line analog method for subtraction radiography using electrostatic imaging techniques is presented, Various electrostatic imaging methods have been proposed for radiography. The best known is xeroradiography which has gained widespread use in mammography[1] and is based on x-ray induced charge cancellation on a prepolarized photoconductive plate to form an electrostatic latent image of the object. Another technique referred ...


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Educational Resources on Electrets

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IEEE.tv Videos

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IEEE-USA E-Books

  • Photorectifier based on a combination of a photoconductor and an electret

    None

  • Integrated active speech network for subscriber set application

    A bipolar integrated speech network providing DTMF and high impedance microphone inputs, regulated 3V output together with 2-4 wire conversion, balance and 7dB of loop length compensation for use in normal or subscriber carrier modes of operation, will be described.

  • X-ray analysis of electrets

    It is proposed to study the mechanism of the formation and decay of electrets in some non-polar inorganic polycrystalline and amorphous dielectrics. The formation of electrets in these materials under different conditions of sample temperatures polarizing fields and cooling rates will be experimentally pursued. The decay of these electrets both in the open circuit and closed circuit conditions are to be observed (with improved methods whenever possible). An extension of the Swann-Gubkin theory to a more elaborate microscopic theory in agreement with the experimental observations will be sought.

  • Fully integrated 500uW speech detection wake-up circuit

    Speech analysis requires substantial computation. It is desirable to run this analysis only when needed and at other times to go to a low power state. Here we propose a self-biased low power speech detection wake up circuit which interfaces directly to standard electret microphones. The speech detector includes a microphone preamplifier, a power extraction squaring circuit, a bandpass filter passing power of the modulation spectrum in the speech band from 2-12 Hz, a half rectifier which extracts this phoneme band power, and a PFM silicon neuron which emits spikes indicating phoneme-rate modulation of the audio spectrum. The output of the speech detector circuit is an asynchronous stream of digital spikes at a rate of 1Hz to 20Hz whose temporal structure indicates the presence of speech. A subsequent conventional processor will go to sleep between spikes and only wake up for full power speech analysis when the temporal structure indicates speech. The circuit is built in 1.6um 2P-2M CMOS and consumes 500uW with a 3V supply when attached to a standard electret microphone.

  • Electrostatic subtraction radiography

    A simple on-line analog method for subtraction radiography using electrostatic imaging techniques is presented, Various electrostatic imaging methods have been proposed for radiography. The best known is xeroradiography which has gained widespread use in mammography[1] and is based on x-ray induced charge cancellation on a prepolarized photoconductive plate to form an electrostatic latent image of the object. Another technique referred to as Electron Radiography [2] or gas ionography [3] employs a gas in an electric field such that free charge carriers produced in the gas by the x-ray photons subsequently form the electrostatic latent image of the object.

  • Studies on charging op polymer foils by triboelectricity

    Triboelectricity, which is a kind of old and well known phenomena, has been used as a method of charging of polymer electrets(1). G.M. Sessler has shown that this method has not been used extensively, mostly because of lack of accurate reproducibility(2)R. Gerhard-Multhaupt mentioned in his recent paper that triboelectricity will probably be used as a simple and safe charging method(3). We used "The Arrangement of Triboelectrometer and Auto-measuring Recorder" which was assembled by us to charge polymer such as LDPE, PS and teflon PEP foils. In this paper we discuss effects of some factors such as fimes of friction (n), normal pressure (p), frictional separate velocity (v) and relative humidity (RH) at RT. The results of our experiments have shown that charging electret by using suitable frictional materials is controllable, reproduceable and relatively uniform.

  • Channel and noise normalization using affine transformed cepstrum

    The paper addresses the environmental mismatch problem that arises from noise and channel variabilities. A new feature mapping technique based on an optimal affine transform of the cepstrum is proposed to solve the mismatch problem observed over the speaker recognition systems. It is designed based on the fact that both the channel and noise interferences basically cause the cepstrum space to undergo an affine transformation. By taking an inverse transformation, one can easily decouple from the speech the effects of the channel and noise. Alternatively, one can take a forward transform of the training data to simulate the operating conditions.

  • Electrical and electret properties of non-woven "spunbond" polypropylene.

    Non-woven polypropylene(PP) is the nonpolar polymer that is widely used in mechanical engineering, in the manufacture of composite materials and medical equipment. It's widely available and it's relatively inexpensive. The article is devoted to the study of mechanical, electrical and electret properties of non-woven "Spunbond" polypropylene CC20, CC35, CC40 CC50, CC60, CC70, CC80, CC90, and CC100. Here CC means grams per square meter (g/m2). The stability of the electret state was studied by the method of thermoactivation spectroscopy. The dependences of the compensating potential difference on time under isothermal conditions were received over a wide range of temperatures. The influence of humidity on the stability of the electret state is shown. Electrets were produced in a corona discharge with the negative and positive polarity of corona electrode.

  • Preparation of electrets by interlayer polarization methods

    The effects of interlayer polarization in the preparation of electret are studied in this paper. We have deeply discussed several different samples by different ways, which is meaningful for the research of mini electret devices.

  • α-Relaxation in Nylon studied by TSD

    The TSD technique has been used to study the α-relaxation in Nylon terpolymer films. A well isolated peak observed at about 60 °C in the TSD spectrum suggests the onset of low frequency molecular motions in the polymer. Experimental results indicate that the induced polarization is due to dipole alingment. TSP experiments give a peak characterized by the same position and height as the TSD peak. Tqdetermined by DTA lies in the region in which the α-peak occurs, a.c. measurements also reveal a loss peak in the region of Tg. It is concluded that the relaxation is due to large-scale segmental motions at the glass transition.



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