US 12,217,909 B2
Soft bistable magnetic actuator and fabrication method thereof, fatigue testing device and auto underwater vehicle
Jian Lu, Shenzhen (CN); Zhou Chen, Shenzhen (CN); Lei Wan, Shenzhen (CN); and Yunhu He, Shenzhen (CN)
Assigned to City University of Hong Kong Matter Science Research Institute (Futian), Shenzhen (CN)
Filed by City University of Hong Kong Matter Science Research Institute (Futian), Shenzhen (CN)
Filed on Mar. 22, 2022, as Appl. No. 17/700,831.
Application 17/700,831 is a continuation of application No. PCT/CN2021/128207, filed on Nov. 2, 2021.
Claims priority of application No. 202111260482.0 (CN), filed on Oct. 27, 2021.
Prior Publication US 2023/0131840 A1, Apr. 27, 2023
Int. Cl. C08K 3/38 (2006.01); B29C 45/00 (2006.01); B29C 45/16 (2006.01); C08L 83/00 (2006.01); C08L 83/04 (2006.01); H01F 1/053 (2006.01); H01F 1/113 (2006.01); H01F 1/117 (2006.01); H01F 1/34 (2006.01); H01F 7/20 (2006.01); H01F 41/02 (2006.01); H01H 55/00 (2006.01); B29C 71/00 (2006.01); B29K 83/00 (2006.01); B29K 505/02 (2006.01); B29K 505/08 (2006.01); B29K 505/12 (2006.01); C08K 3/22 (2006.01)
CPC H01F 7/204 (2013.01) [B29C 45/006 (2013.01); B29C 45/1615 (2013.01); B29C 45/164 (2013.01); H01F 1/0533 (2013.01); H01F 41/0266 (2013.01); H01H 55/00 (2013.01); B29C 2045/1601 (2013.01); B29C 2045/169 (2013.01); B29C 2071/0027 (2013.01); B29K 2083/00 (2013.01); B29K 2505/02 (2013.01); B29K 2505/08 (2013.01); B29K 2505/12 (2013.01); B29K 2995/0008 (2013.01); C08K 2003/2265 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for fabricating a soft bistable magnetic actuator, comprising the following operations:
casting a soft precursor by injection molding, wherein the soft precursor consists of a soft deformable portion and a soft peripheral portion surrounded, the soft deformable portion is made of magnetic particles and polymer, and the soft peripheral portion is made of magnetic particles, a mixture of organic liquid and polymer; and
extracting the organic liquid by an organic solvent to shrink the soft peripheral portion, to buckle the soft deformable portion.