Patent · US Active

Systems and methods for fabricating water-responsive actuators

US11603827B1 · kind B1 · utility

1Cited by

4References

10Claims

0Family size

Assignee

The Trustees of Columbia University in the City of New York · US

Inventors

Ozgur Sahin · New York, US
Onur Cakmak · New York, US
Xi Chen · New York, US

Key dates

Filing date	May 10, 2019
Grant date	Mar 14, 2023
Priority date	—
Expiry date	Mar 3, 2041

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF03G7/0612
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

Water-responsive actuators and methods for creating water responsive actuators are disclosed. In some embodiments, the disclosed subject matter includes a first layer, for example a plastic tape, and a second layer, for example bacterial spores and cured adhesive. The second layer can be created in a pattern. The pattern can include joints, which can contract when exposed to dry air and can thereby bend the actuator, and can expand when exposed to humid air and thereby return the actuator its original position.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.