公开(公告)号：US12144260B2

公开(公告)日：2024-11-12

申请号：US17154711

申请日：2021-01-21

Applicant: Wisconsin Alumni Research Foundation

Inventor： Xudong Wang ,  Fan Yang ,  Jun Li

IPC: H10N30/00 ,  C08J5/18 ,  C08J7/06 ,  C09D1/00 ,  H10N30/02 ,  H10N30/87

Abstract: A flexible piezoelectric thin film, and method of manufacture, has a polyvinyl alcohol (PVA)-glycine-PVA sandwich heterostructure. The thin film is manufactured by evaporating the solvent from a glycine-PVA mixture solution. The film automatically assembles into the PVA-glycine-PVA sandwich heterostructure as it is salted out. Strong hydrogen bonding between the oxygen atoms in glycine and hydroxyl groups on PVA chains are responsible for the nucleation and growth of the piezoelectric γ-glycine and alignment of the domain orientation.

公开(公告)号：US20220231218A1

公开(公告)日：2022-07-21

申请号：US17154711

申请日：2021-01-21

Applicant: Wisconsin Alumni Research Foundation

Inventor： Xudong Wang ,  Fan Yang ,  Jun Li

IPC: H01L41/08 ,  C08J5/18 ,  C09D1/00 ,  C08J7/06 ,  H01L41/047 ,  H01L41/23

Abstract: A flexible piezoelectric thin film, and method of manufacture, has a polyvinyl alcohol (PVA)-glycine-PVA sandwich heterostructure. The thin film is manufactured by evaporating the solvent from a glycine-PVA mixture solution. The film automatically assembles into the PVA-glycine-PVA sandwich heterostructure as it is salted out. Strong hydrogen bonding between the oxygen atoms in glycine and hydroxyl groups on PVA chains are responsible for the nucleation and growth of the piezoelectric γ-glycine and alignment of the domain orientation.