Li alloy-based non-volatile actuators
- Title
- Li alloy-based non-volatile actuators
- Author
- 김상태
- Keywords
- Artificial Muscles; Non-Volatile Actuation; Li Alloys; Electrochemistry
- Issue Date
- 2019-03
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- NANO ENERGY, v. 57, Page. 653-659
- Abstract
- Conventional artificial muscles induce bending by aligning large-sized ions within the electrolyte upon bias application. Such design, alike many other actuator types, suffer from volatile actuation where the actuated position gets lost upon switch-off. Here, we develop a non-volatile artificial muscle with ion insertion electrode materials. Upon bias application, the inserted ions pose stress on the electrodes that sustain even after power shut-off. The demonstrated actuator consists of lithium germanide (LixGe) thin films deposited on both sides of a flexible polyimide (PI) substrate. The device exhibits 35.2 mm displacement when operated at 2 V and generates the blocking force of 0.67 mN. The observed stress and volume expansion reach 248 MPa and 8.2% for the 284 nm Li3Ge thin films, respectively. The actuated position is maintained against gravity with 12.1% decay in the actuated distance after 10 min. The novel actuator type proves the potential use of lithium insertion materials as actuation materials and shows that non-volatile actuation can be realized with ion-insertion electrodes.
- URI
- https://www.sciencedirect.com/science/article/pii/S2211285518310085?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/151498
- ISSN
- 2211-2855; 2211-3282
- DOI
- 10.1016/j.nanoen.2018.12.095
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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