Reduced hysteresis and reduced creep in nanovoided polymer devices

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United States of America Patent

PATENT NO 11133455
APP PUB NO 20200185592A1
SERIAL NO

16703291

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Abstract

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An example device includes a nanovoided polymer element, which may be located at least in part between the electrodes. In some examples, the nanovoided polymer element may include anisotropic voids, including a gas, and separated from each other by polymer walls. The device may be an electroactive device, such as an actuator having a response time for a transition between actuation states. The gas may have a characteristic diffusion time (e.g., to diffuse half the mean wall thickness through the polymer walls) that is less than the response time. The nanovoids may be sufficiently small (e.g., below 1 micron in diameter or an analogous dimension), and/or the polymer walls may be sufficiently thin, such that the gas interchange between gas in the voids and gas absorbed by the polymer walls may occur faster than the response time, and in some examples, effectively instantaneously.

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Patent Owner(s)

Patent OwnerAddress
META PLATFORMS TECHNOLOGIES LLC1 META WAY MENLO PARK CA 94025

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Diest, Kenneth Kirkland, US 30 213
Elabbasi, Nagi Framingham, US 9 21
Landig, Renate Eva Klementine Seattle, US 44 98
Ouderkirk, Andrew John Redmond, US 310 1186
Schmitt, Eric Needham, US 54 66
Smyth, Katherine Marie Seattle, US 66 442
Spann, Andrew Needham, US 3 16

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