Dielectric and electret properties of nanoemulsion spin-on polytetrafluoroethylene films

Schwödiauer, Reinhard; Neugschwandtner, Gerhard S.; Bauer‐Gogonea, S.; Bauer, Siegfried; Rosenmayer, Tom

doi:10.1063/1.126425

Cited by 22 publications

(7 citation statements)

References 13 publications

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“…C max and C min positions are presented in Figure 20(b, c). The capacitance of the converter is expressed in equation (12).…”

Section: Capacitances Values and Electrostatic Forcesmentioning

confidence: 99%

“…Teflon [4][5][6][7], SiO 2 [8][9] and CYTOP [10][11][12][13][14] are clearly the most well-known and the most used electrets in electret-based electrostatic converters. Of course, many more electrets can be found in the state of the art.…”

Section: E Well-known Electretsmentioning

confidence: 99%

“…Where N is the number of fingers, l 0 the facing length of C c1 and C c2 at the equilibrium position and w the thickness of the fingers (third dimension). The capacitance of the converter is expressed in equation (12).…”

Section: Figure 17 Capacitance Of the Simple Plane Capacitormentioning

confidence: 99%

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Electrostatic Conversion for Vibration Energy Harvesting

Boisseau¹,

Despesse²,

Seddik³

2012

Small-Scale Energy Harvesting

176

137

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This chapter focuses on vibration energy harvesting using electrostatic converters. It synthesizes the various works carried out on electrostatic devices, from concepts, models and up to prototypes, and covers both standard (electret-free) and electret-based electrostatic vibration energy harvesters (VEH).After introducing the general concept of Vibration Energy Harvesting and the global advantages and drawbacks of electrostatic devices to convert mechanical power into electricity ( §1), we present in details the conversion principles of electret-free and electret-based electrostatic converters and equations that rule them in §2. An overview of electrostatic VEH, comparing the results from several laboratories (powers, sizes, concepts…) is provided in §3. In §4, we introduce several power management circuits dedicated to electrostatic VEH. These circuits are extremely important as they are the only way to turn VEH output powers into viable supply sources for electronic devices (sensors, microcontrollers, RF chips…). Assessments, limits and perspectives of electrostatic VEH are then presented in §5.

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“…C max and C min positions are presented in Figure 20(b, c). The capacitance of the converter is expressed in equation (12).…”

Section: Capacitances Values and Electrostatic Forcesmentioning

confidence: 99%

Section: E Well-known Electretsmentioning

confidence: 99%

See 1 more Smart Citation

Electrostatic Conversion for Vibration Energy Harvesting

Boisseau¹,

Despesse²,

Seddik³

2012

Small-Scale Energy Harvesting

176

137

View full text Add to dashboard Cite

show abstract

“…22 Thin-film, low-k dielectric substrates are polymers or inorganic oxides having dielectric constants (k) lower than bulk silicon dioxide (k # 4). [23][24][25][26] Capacitance depends on the dielectric constant, so low-k dielectric materials are desirable because they reduce the capacitance between wires and allow increased operating frequencies in microelectronic devices. 24 There is great interest in generating porous dielectrics because of their reduced effective dielectric constant as compared to bulk materials.…”

Section: Introductionmentioning

confidence: 99%

Patterning micron-sized features in a cross-linked poly(acrylic acid) film by a wet etching process

et al. 2007

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This paper describes a photolithographic method to create sub-micron-scale patterns of cationcross-linked poly(acrylic acid) (CCL-PAA). PAA can be cross-linked with a wide range of metal cations-including, but not limited to, Ag + , Ca 2+ , Pd 2+ , Al 3+ , La 3+ , and Ti 4+ . Upon patterning a positive photoresist (diazonaphthoquinone-novolac resin) on a film of CCL-PAA, the exposed regions of CCL-PAA were etched by either an aqueous NaOH or EDTA solution. The initial cross-linking cation could be exchanged for a second cation that could not be patterned photolithographically. We used these patterned films of CCL-PAA i) to host and template the reduction of metallic cations to metallic nanoparticles, and ii) to fabricate porous, low-k dielectric substrates.

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“…Nevertheless, inorganic materials such as SiO 2 can be really interesting for energy harvesting as they are able to keep a more important surface charge density (up to 12mC/m² [12,13]) than organic materials which rarely exceed 2mC/m² [14][15][16][17][18][19].…”

Section: -P4 Nd European Energy Conferencementioning

confidence: 99%

New DRIE-Patterned Electrets for Vibration Energy Harvesting

Boisseau

Duret

Chaillout

et al. 2012

EPJ Web of Conferences

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Abstract. This paper is about a new manufacturing process aimed at developing stable SiO 2 /Si 3 N 4 patterned electrets using a Deep Reactive Ion Etching (DRIE) step for an application in electret-based Vibration Energy Harvesters (e-VEH). This process consists in forming continuous layers of SiO 2 /Si 3 N 4 electrets in order to limit surface conduction phenomena and is a new way to see the problem of electret patterning. Experimental results prove that patterned electrets charged by a positive corona discharge show excellent stability with high surface charge densities that may reach 5mC/m² on 1.1µm-thick layers, even with fine patterning and harsh temperature conditions (up to 250°C). This paves the way to new e-VEH designs and manufacturing processes.

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Dielectric and electret properties of nanoemulsion spin-on polytetrafluoroethylene films

Cited by 22 publications

References 13 publications

Electrostatic Conversion for Vibration Energy Harvesting

Electrostatic Conversion for Vibration Energy Harvesting

Patterning micron-sized features in a cross-linked poly(acrylic acid) film by a wet etching process

New DRIE-Patterned Electrets for Vibration Energy Harvesting

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