Piezoelectric microactuators in polymer-composite technology

Friese, C.; Goldschmidtböing, Frank; Woias, Peter

doi:10.1109/sensor.2003.1216938

Cited by 7 publications

(8 citation statements)

References 3 publications

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“…In the case of high parasitic damping δ > k 2 /2, the electrical damping has to be maximized according to equation (19). To simplify the results, the limit δ k 2 is used, and further simplification is possible with k 2 1,…”

Section: Optimum Loadmentioning

confidence: 99%

Parameter identification for resonant piezoelectric energy harvesters in the low- and high-coupling regimes

Goldschmidtboeing

Wischke

Eichhorn

et al. 2011

J. Micromech. Microeng.

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We demonstrate a method for identifying the parameters of piezoelectric harvesters by simple electrical measurements. The basic equations are derived from a simplified yet accurate model. The accuracy of the model is proven by comparison with the full model. Two beam harvesters, one with a unimorph beam and one with a bimorph beam, have been fabricated and characterized. The results coincide well with proposed theory and demonstrate the differences between harvesters with low and high coupling constants. It turns out that four parameters are sufficient to completely describe the electrical behavior of a harvester with a low coupling constant. For harvesters with high coupling constants, five parameters are needed.

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Section: Optimum Loadmentioning

confidence: 99%

Parameter identification for resonant piezoelectric energy harvesters in the low- and high-coupling regimes

Goldschmidtboeing

Wischke

Eichhorn

et al. 2011

J. Micromech. Microeng.

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“…The cantilever suspension is fabricated by laminating together the two PZT ceramics with an epoxy resin in a PDMS mold [20]. All dimensions as well as the characteristic material values are listed in table 1.…”

Section: Fabricationmentioning

confidence: 99%

Electromagnetic vibration harvester with piezoelectrically tunable resonance frequency

Wischke¹,

Masur

Goldschmidtboeing

et al. 2010

J. Micromech. Microeng.

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This paper presents an electromagnetic vibration scavenger that exhibits a tunable eigenfrequency. By applying a static electrical field the eigenfrequency can be shifted. This feature is originated from exploiting the elastostriction of the utilized piezoelectric bimorph suspension. It is demonstrated that in the tuning operation mode more than 50 μW are scavenged continuously across the feasible frequency range of 20 Hz.

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“…4 an optimum stroke is observed for an equal thickness of the piezo and polymer layer when using the same materials as described in [14]. Based on these and other simulations (not shown here), the membrane actuator was designed with a membrane radius of 8 m m and a piezoelectric disk radius of 7 mm.…”

Section: Design and Mathematical Modelmentioning

confidence: 84%

“…A composed silicone molding form was made for this purpose as shown in fig. 7 and described in [14]. The piezo disc is inserted into the lower segment of the molding form which is closed and subsequently filled with a two component epoxy resin.…”

Section: E475mentioning

confidence: 99%

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A membrane actuator based on piezo-polymer-composite technology

Just

Pustan

Woias

The 13th International Conference on Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDU

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This paper presents the design, fabrication and characterization of a novel piezo-polymer-composite membrane actuator, Based on this membrane actuator, a valve for liquids and gases is presented as an application example. In measurements with water, the functionality of the valve was demonstrated for a pressure up to 650 hPa with a maximum flow of 1.5 l/h and a leak rate of less than 4 ml/h in the closed state. Moreover, a novel lowcost fabrication technology was developed that combines laser micromachining and polymer insert casting.

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Piezoelectric microactuators in polymer-composite technology

Cited by 7 publications

References 3 publications

Parameter identification for resonant piezoelectric energy harvesters in the low- and high-coupling regimes

Parameter identification for resonant piezoelectric energy harvesters in the low- and high-coupling regimes

Electromagnetic vibration harvester with piezoelectrically tunable resonance frequency

A membrane actuator based on piezo-polymer-composite technology

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