Photo-responsive composite actuator

{
  "publication_number": "US10011882B2",
  "country": "US",
  "kind": "B2",
  "title": "Photo-responsive composite actuator",
  "abstract": "A photo-responsive composite actuator according to the present invention includes a polymeric scaffold film; an azobenzene liquid crystal polymer applied on a surface of the polymeric scaffold film; and a protective film attached to a surface of the azobenzene liquid crystal polymer.",
  "claims": [
    "1. A photo-responsive composite actuator comprising: a polymeric scaffold film; an azobenzene liquid crystal polymer applied on a surface of the polymeric scaffold film by immersing the film in the polymer; and a protective film attached to a surface of the azobenzene liquid crystal polymer.",
    "2. The photo-responsive composite actuator according to claim 1, wherein the polymeric scaffold film has a porous structure.",
    "3. The photo-responsive composite actuator according to claim 2, wherein the porous structure of the polymeric scaffold film is formed by intertwining polymer fibers constituting the polymeric scaffold film and having pores.",
    "4. The photo-responsive composite actuator according to claim 3, wherein the polymeric scaffold film has a mesh structure.",
    "5. The photo-responsive composite actuator according to claim 1, wherein the azobenzene liquid crystal polymer is applied on both surfaces of the polymeric scaffold film.",
    "6. The photo-responsive composite actuator according to claim 1, wherein the polymeric scaffold film has a concave pattern.",
    "7. The photo-responsive composite actuator according to claim 1, wherein the protective film has a pattern composed of a light transmission portion configured to transmit ultraviolet (UV) rays and a light-blocking portion configured to suppress UV transmission, contrary to the light transmission portion."
  ],
  "description_excerpt": "The present invention relates to a composite actuator, and particularly, to a photo-responsive composite actuator capable of controlling bending deformation by light radiation.\n\nRecently, a great deal of research for applying intelligent composite actuators which exhibit mechanical responses by external stimuli to actively or manually control a structure has been conducted.\n\nAn intelligent composite actuator generally uses an intelligent material such as a shape-memory alloy, a piezoelectric material and an electro-active polymer, and may be used in the form of a driver by directly attaching such an intelligent material to a structure or by inserting such an intelligent material into other materials.\n\nIn Korean Patent Application Publication No. 10-2013-0011880, one example of an intelligent composite actuator is disclosed. The composite actuator disclosed in the document includes an intelligent material whose shape can be deformed due to an external signal such as a current signal and a directional material which can support the intelligent material, regulate an exterior shape, and suppress deformation in a specific direction, and realizes the deformation of the composite actuator by a combination of the arrangement form of the intelligent material and the deformation suppressing directivity of the directional material.\n\nIn addition, in Korean Patent Application Publication No. 10-2016-0017278, another example of an intelligent composite is disclosed. The composite actuator disclosed in the document realizes the deformation thereof using a wire instead of an intelligent material.",
  "cpc": [
    "C12Q 1/6888",
    "A61F 2/02",
    "B25J 9/10",
    "B25J 9/1095",
    "C09K 19/38"
  ],
  "ipc": [
    "A61F 2/02",
    "B25J 9/10",
    "C08F 20/60",
    "C08F 4/04",
    "C12Q 1/6888",
    "H10N 30/20"
  ],
  "assignees": [
    "Seoul National University R&DB Foundation"
  ],
  "inventors": [
    "Maeng Hyo Cho",
    "Joon Myung Choi"
  ],
  "filing_date": "2017-06-02",
  "publication_date": "2018-07-03",
  "grant_date": "2018-07-03",
  "priority_date": "2016-06-03",
  "application_number": "US-201715612451-A",
  "family_id": "60482221",
  "cited_by_count": 0,
  "citations": [
    "JP3137275B2",
    "JP2007106945A",
    "US20100052196A1",
    "JP5224261B2",
    "US8901247B2",
    "KR20130011880A",
    "KR20160017278A"
  ]
}