Magnetic Shape Memory Polymers with Integrated Multifunctional Shape Manipulation
Abstract
Shape‐programmable soft materials that exhibit integrated multifunctional shape manipulations, including reprogrammable, untethered, fast, and reversible shape transformation and locking, are highly desirable for a plethora of applications, including soft robotics, morphing structures, and biomedical devices. Despite recent progress, it remains challenging to achieve multiple shape manipulations in one material system. Here, a novel magnetic shape memory polymer composite is reported to achieve this. The composite consists of two types of magnetic particles in an amorphous shape memory polymer matrix. The matrix softens via magnetic inductive heating of low‐coercivity particles, and high‐remanence particles with reprogrammable magnetization profiles drive the rapid and reversible shape change under actuation magnetic fields. Once cooled, the actuated shape can be locked. Additionally, varying the particle loadings for heating enables sequential actuation. The integrated multifunctional shape manipulations are further exploited for applications including soft magnetic grippers with large grabbing force, reconfigurable antennas, and sequential logic for computing.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 08, 2019
- Source ID
- 10.1002/adma.201906657
Entities
People
- Fengyuan Yang
- H. Jerry Qi
- Janet Wong
- Joshua M. Kovitz
- Qiji Ze
- Ruike Zhao
- Rundong Zhang
- S. Macrae Montgomery
- Shuai Wu
- Xiao Kuang
Organizations
- Air Force Office of Scientific Research
- Georgia Tech
- Ohio State University
- United States Department of Energy