Mechanical Metamaterials for Handwritten Digits Recognition

Adv Sci (Weinh). 2024 Mar;11(10):e2308137. doi: 10.1002/advs.202308137. Epub 2023 Dec 25.

Abstract

The increasing needs for new types of computing lie in the requirements in harsh environments. In this study, the successful development of a non-electrical neural network is presented that functions based on mechanical computing. By overcoming the challenges of low mechanical signal transmission efficiency and intricate layout design methodologies, a mechanical neural network based on bistable kirigami-based mechanical metamaterials have designed. In preliminary tests, the system exhibits high reliability in recognizing handwritten digits and proves operable in low-temperature environments. This work paves the way for a new, alternative computing system with broad applications in areas where electricity is not accessible. By integrating with the traditional electronic computers, the present system lays the foundation for a more diversified form of computing.

Keywords: 3D printing; image recognition; kirigami; mechanical metamaterial; non-electrical.