Actuator using photo-responsive shape-changing construct and method of driving same
AssigneeSeoul National University R&Db Foundation
InventorsMaeng Hyo Cho, Hee Jun Sung, Hong Seok Kim, Hyun Su Kim
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Abstract
The present invention relates to an actuator using a photo-responsive shape-changing construct, the actuator comprising: a 1-1 polymer film and a 1-2 polymer film, configured to undergo a bending deformation in response to a light irradiation; a first restricting member provided between the 1-1 polymer film and the 1-2 polymer film so as to allow the 1-1 polymer film and the 1-2 polymer film to be connected to each other; and a rotation member configured to rotate as the rotation member, at least in part, is pushed by an end of the 1-1 polymer film along with the bending deformation of the 1-1 polymer film.
Claims6
An actuator using a photo-responsive shape-changing construct, comprising:
- a 1-1 polymer film and a 1-2 polymer film, configured to undergo a bending deformation in response to a light irradiation;
- a first restricting member provided between the 1-1 polymer film and the 1-2 polymer film so as to allow the 1-1 polymer film and the 1-2 polymer film to be connected to each other;
- a rotation member configured to rotate as the rotation member, at least in part, is pushed by an end of the 1-1 polymer film along with the bending deformation of the 1-1 polymer film;
- and
- a first light radiating member configured to emit light to the 1-1 polymer film and the 1-2 polymer film,
- wherein the first light radiating member comprises:
- a 1-1 a light radiating member configured to emit light to one surface of the 1-1 polymer film so that the 1-1 polymer film undergoes bending deformation in one direction;
- and
- a 1-2b light radiating member configured to emit light to one surface of the 1-2 polymer film so that the 1-2 polymer film undergoes bending deformation in another direction;
- wherein the one surface of the 1-1 polymer film faces a first direction and the one surface of the 1-2 polymer film faces a second direction opposite to the first direction.
A method of driving an actuator using a photo-responsive shape-changing construct, comprising:
- emitting light to one surface of a 1-1 polymer film configured to undergo bending deformation in response to light irradiation so that the 1-1 polymer film undergoes bending deformation in one direction and a rotation member rotates as the rotation member, at least in part, is pushed by an end of the 1-1 polymer film along with the bending deformation;
- emitting light to one surface of a 1-2 polymer film, connected to the 1-1 polymer film by a first restricting member and configured to undergo bending deformation in response to light irradiation, so that the 1-2 polymer film undergoes bending deformation in another direction, which allows the 1-2 polymer film and the 1-1 polymer film to pass through without interfering with the rotation member;
- emitting light to the other surface of the 1-1 polymer film so that the 1-1 polymer film which has been bent undergoes straightening deformation and returns to an original form;
- and
- emitting light to the other surface of the 1-2 polymer film so that the 1-2 polymer film which has been bent undergoes straightening deformation and returns to an original form without causing interference to the rotation member,
- wherein the one surface of the 1-1 polymer film and the other surface of the 1-2 polymer film face a first direction, and the other surface of the 1-1 polymer film and the one surface of the 1-2 polymer film face a second direction opposite to the first direction.
Dependencies are inferred from the claim text.