Optimized Magnetization Distribution in Body-Centered Cubic Lattice-Structured Magnetoelastomer for High-Performance 3D Force–Tactile Sensors
Year: 2025
Type: article
Abstract: Flexible magnetic tactile sensors hold transformative potential in robotics and human-computer interactions by enabling precise force detection. However, existing sensors face challenges in balancing sensitivity, detection range, and structural adaptability for sensing force. This study proposed a pre-compressed magnetization method to address these limitations by amplifying the magnetoelastic effect through optimized magnetization direction distribution of the elastomer. A body-centered cubic lattice-structured magnetoelastomer featuring regular deformation under compression was fabricated via digital light processing (DLP) to validate this method. Finite element simulations and experimental analyses revealed that magnetizing the material under 60% compression strain optimized magnetization direction distribution, enhancing force-magnetic coupling. Integrating the magnetic elastomer with a hall sensor, the prepared tactile sensor demonstrated a low detection limit (1 mN), wide detection range (0.001-10 N), rapid response/recovery times (40 ms/50 ms), and durability (>1500 cycles). By using machine learning, the sensor enabled accurate 3D force prediction.
Source: Sensors
DOI: 10.3390/s25072312
Authors: Hongfei Hou, Ziyin Xiang, Chaonan Zhi, Haodong Hu, Xingyu Zhu, Baoru Bian, Yuanzhao Wu, Yiwei Liu, Xiaohui Yi, Jie Shang, Run-Wei Li
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,137
Awards: G118314349, G1192502648, G1211141985, G1249360007, G1381819005, G1410147047, G1508298044, G1668353697, G2153453404, G2248619385, G2536012318, G2950026750, G3074742920, G3204896003, G3211879242, G3532016498, G3908935739, G411121281, G4232962775, G4241420002, G4507273932, G466049214, G5022443925, G5109964013, G5132670681, G5335062011, G542026788, G551104146, G6446743242, G6737972779, G6840153049, 压力-动摩擦力-静摩擦力电子皮肤的制备和性能研究, G7127913201, G7181473386, G7661834432, G7722371915, G7731757837, G7778824946, G8014656041, G8456845543, G8525468545, G8676283809, G8727874483, 5d自旋霍尔氧化物的电荷-自旋转换效率调控及微观机理研究, G8764143420
OpenAlex ID: W4409210531