Search Results - "SESSLER, G. M"

Electret transducer for vibration-based energy harvesting by Hillenbrand, J., Pondrom, P., Sessler, G. M.

“…Vibration-based electret energy harvesters with soft cellular spacer rings are presented. These harvesters are closely related to recently introduced electret…”
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Stacked and folded piezoelectrets for vibration-based energy harvesting by Sessler, G. M., Pondrom, P., Zhang, X.

“…Vibration-based energy harvesting with piezoelectrets can be significantly improved by using multiple layers of these materials. In particular, folding or…”
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Electromechanical response of cellular electret films by Sessler, G. M., Hillenbrand, J.

“…Charged polypropylene films with a cellular structure show pseudopiezoelectric properties. Measurements of the direct and inverse electromechanical transducer…”
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Electret accelerometers: Physics and dynamic characterization by Hillenbrand, J., Haberzettl, S., Motz, T., Sessler, G. M.

“…Electret microphones are produced in numbers that significantly exceed those for all other microphone types. This is due to the fact that air-borne electret…”
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Vibration-based energy harvesting with piezoelectrets having high d31 activity by Wu L, Sessler, G M

“…Sandwiched fluoroethylene propylene films with charged, parallel-tunnel voids between the layers, which exhibit high d31 piezoelectric activity, were designed…”
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Piezoelectricity in cellular electret films by Hillenbrand, J., Sessler, G.M.

“…Permanently charged films with a cellular or porous structure represent a new family of polymer electrets. These materials show piezoelectric properties with…”
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Cantilever-based ferroelectret energy harvesting by Ben Dali, O., Pondrom, P., Sessler, G. M., Zhukov, S., von Seggern, H., Zhang, X., Kupnik, M.

“…We present a vibrational energy harvester with fluorinated ethylene propylene (FEP)-ferroelectrets working in d31 mode. The ferroelectret film consists of two…”
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Vibration-based energy harvesting with stacked piezoelectrets by Pondrom, P., Hillenbrand, J., Sessler, G. M., Bös, J., Melz, T.

“…Vibration-based energy harvesters with multi-layer piezoelectrets (ferroelectrets) are presented. Using a simple setup with nine layers and a seismic mass of 8…”
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Large and broadband piezoelectricity in smart polymer-foam space-charge electrets by Neugschwandtner, G. S., Schwödiauer, R., Vieytes, M., Bauer-Gogonea, S., Bauer, S., Hillenbrand, J., Kressmann, R., Sessler, G. M., Paajanen, M., Lekkala, J.

“…Charged closed-cell microporous polypropylene foams are shown to exhibit piezoelectric resonance modes in the dielectric function, coupled with a large…”
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Compact electret energy harvester with high power output by Pondrom, P., Sessler, G. M., Bös, J., Melz, T.

“…Compact electret energy harvesters, based on a design recently introduced, are presented. Using electret surface potentials in the 400 V regime and a seismic…”
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Charge distribution and transport in polymers by Sessler, G.M.

“…Experimental work on charge distributions and charge transport in polymer films is reviewed. For studying the charge distributions in the thickness dimension,…”
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DC-Biased Piezoelectret Film Transducers for Airborne Ultrasound by Hillenbrand, J., Sessler, G. M.

“…Ultrasonic senders with DC-biased piezoelectret films were built and characterized. The generated sound pressure of the transducers is inversely proportional…”
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Thermally stable fluorocarbon ferroelectrets with high piezoelectric coefficient by ZHANG, X, HILLENBRAND, J, SESSLER, G. M

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Piezoelectric d33 coefficient of cellular polypropylene subjected to expansion by pressure treatment by Zhang, X., Hillenbrand, J., Sessler, G. M.

“…The piezoelectric activity of charged cellular polypropylene films of originally 40 and 50μm thickness can be significantly increased by thickness expansion…”
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Electret microphones with stiff diaphragms by Hillenbrand, J., Haberzettl, S., Sessler, G. M.

“…Electret microphones with stiff plates instead of flexible diaphragms are described. The stiff plate and a backplate, separated by a soft cellular polymer…”
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Space-charge electrets by Kressmann, R., Sessler, G.M., Gunther, P.

“…A literature review on space-charge electrets, covering the time period 1987 to 1996, is presented. The review starts out with a discussion of new inorganic…”
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High-sensitivity piezoelectret-film accelerometers by Hillenbrand, J, Kodejska, M, Garcin, Y, Seggern, H V, Sessler, G M

“…Accelerometers based on polypropylene ferroelectret films are described and characterized by frequency response measurements of their sensitivity. For these…”
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Piezoelectricity in polyvinylidenefluoride by Sessler, G. M.

“…A review of the physical properties of polyvinylidenefluoride (PVDF) with particular emphasis on its piezoelectric activity is given and the applications of…”
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Electret-thermal analysis of blood by Pinchuk, L.S., Goldade, V.A., Sessler, G.M., Kravtsov, A.G., Zotov, S.V., Tsvetkova, E.A.

“…The thermally stimulated discharge (TSD) method, intended for the analysis of charged dielectrics, was used for human blood research. Above-room-temperature…”
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Stacked piezoelectret microphones of simple design and high sensitivity by Hillenbrand, J., Sessler, G.M.

“…Pressure-chamber and free-field measurements of high sensitivity piezoelectret microphones of two different designs are reported. High sensitivity is achieved…”
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