Shape Memory Alloy (SMA) Actuators: The Role of Material, Form, and Scaling Effects

Autor: Min‐Soo Kim, Jae‐Kyung Heo, Hugo Rodrigue, Hyun‐Taek Lee, Salvador Pané, Min‐Woo Han, Sung‐Hoon Ahn
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Advanced Materials
ISSN: 0935-9648
1521-4095
Popis: Shape memory alloys (SMAs) are smart materials that are widely used to create intelligent devices because of their high energy density, actuation strain, and biocompatibility characteristics. Given their unique properties, SMAs are found to have significant potential for implementation in many emerging applications in mobile robots, robotic hands, wearable devices, aerospace/automotive components, and biomedical devices. Here, the state-of-the-art of thermal and magnetic SMA actuators in terms of their constituent materials, form, and scaling effects are summarized, including their surface treatments and functionalities. The motion performance of various SMA architectures (wires, springs, smart soft composites, and knitted/woven actuators) is also analyzed. Based on the assessment, current challenges of SMAs that need to be addressed for their practical application are emphasized. Finally, how to advance SMAs by synergistically considering the effects of material, form, and scale is suggested.
Advanced Materials
ISSN:0935-9648
ISSN:1521-4095
Databáze: OpenAIRE
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