期刊
NANO LETTERS
卷 20, 期 7, 页码 5185-5192出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c01418
关键词
reprogrammable magnetization; soft magnetic composite; soft magnetic actuator; smart materials
类别
资金
- National Research Foundation of Korea (NRF) - Ministry of Science and ICT (MSIP) of the Republic of Korea [2017R1D1A1B03034297, NRF-2017R1A2B4008286, 2017K1A4A3015437]
- Ministry of Education [NRF-2019R1I1A2A01059288]
- Industrial Strategic Technology Development Program by Ministry of Trade, Industry and Energy (MOTIE) of the Republic of Korea [20009103]
- UNIST [Ulsan National Institute of Science and Technology ] [1.180059.01, 1.160107.01, 1.200095.01]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20009103] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2017R1D1A1B03034297] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Soft magnetic materials have shown promise in diverse applications due to their fast response, remote actuation, and large penetration range for various conditions. Herein, a new soft magnetic composite material capable of reprogramming its magnetization profile without changing intrinsic magnetic properties of embedded magnetic particles or the molecular property of base material is reported. This composite contains magnetic microspheres in an elastomeric matrix, and the magnetic microspheres are composed of ferromagnetic microparticles encapsulated with oligomeric-PEG. By controlling the encapsulating polymer phase transition, the magnetization profiles of the magnetic composite can be rewritten by physically realigning the ferromagnetic particles. Diverse magnetic actuators with reprogrammable magnetization profiles are developed to demonstrate the complete reprogramming of complex magnetization profile.
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