The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 2025
Filed:
May. 04, 2022
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Hao Mei, Redmond, WA (US);
Sheng Ye, Redmond, WA (US);
Christopher Yuan Ting Liao, Seattle, WA (US);
Jonathan Robert Peterson, Woodinville, WA (US);
Rongzhi Huang, Sammamish, WA (US);
Arman Boromand, Issaquah, WA (US);
Andrew John Ouderkirk, Kirkland, WA (US);
Taha Masood, Sammamish, WA (US);
Meta Platforms Technologies, LLC, Menlo Park, CA (US);
Abstract
A mechanically and piezoelectrically anisotropic polymer thin film may be formed by gel casting a solution that includes a crystallizable polymer and a liquid solvent. The solvent may be configured to interact with the polymer to facilitate chain alignment and, in some examples, create a higher crystalline content within the cast thin film. The thin film may also include up to approximately 90 wt. % of an additive and may be characterized by a bimodal molecular weight distribution of a crystallizable polymer where the molecular weight of the additive may be less than the molecular weight of the crystallizable polymer. In some examples, the polymer(s) and the additive(s) may be independently selected from vinylidene fluoride, trifluoroethylene, chlorotrifluoroethylene, hexafluoropropene, vinyl fluoride, etc. The anisotropic polymer thin film may be characterized by an electromechanical coupling factor (k) of at least 0.1.