Electrospun piezoresistive pressure sensor integrated into a soft ball for portable, battery-free monitoring of hand grip strength

IF 7.9 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design Pub Date : 2025-06-16 DOI:10.1016/j.matdes.2025.114257

Abdulkadir Sanli

{"title":"Electrospun piezoresistive pressure sensor integrated into a soft ball for portable, battery-free monitoring of hand grip strength","authors":"Abdulkadir Sanli","doi":"10.1016/j.matdes.2025.114257","DOIUrl":null,"url":null,"abstract":"<div><div>Hand grip strength is a critical biomarker for assessing muscular function and rehabilitation progress, but existing measurement systems are bulky, expensive, and confined to clinical settings, limiting accessibility. We report a portable, low-cost monitoring system using a soft spherical device embedded with a highly sensitive, scalable multiwalled carbon nanotubes (MWCNTs)-enhanced electrospun thermoplastic polyurethane nanofiber sensor. The sensor exhibits a 600 % relative current change at 10 N load and maintains stability over 500 cycles, enabling precise grip assessment. Integrated into an elastomeric ball, the system wirelessly transmits data via near-field communication, allowing real-time smartphone monitoring without batteries. Results confirmed reliable detection of inter-hand strength differences, demonstrating clinical applicability for rehabilitation and home-based care. This scalable, user-friendly platform bridges the gap between lab-grade sensing and practical rehabilitation, offering a versatile solution for personalized biomechanical monitoring.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"256 ","pages":"Article 114257"},"PeriodicalIF":7.9000,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials & Design","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S026412752500677X","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Hand grip strength is a critical biomarker for assessing muscular function and rehabilitation progress, but existing measurement systems are bulky, expensive, and confined to clinical settings, limiting accessibility. We report a portable, low-cost monitoring system using a soft spherical device embedded with a highly sensitive, scalable multiwalled carbon nanotubes (MWCNTs)-enhanced electrospun thermoplastic polyurethane nanofiber sensor. The sensor exhibits a 600 % relative current change at 10 N load and maintains stability over 500 cycles, enabling precise grip assessment. Integrated into an elastomeric ball, the system wirelessly transmits data via near-field communication, allowing real-time smartphone monitoring without batteries. Results confirmed reliable detection of inter-hand strength differences, demonstrating clinical applicability for rehabilitation and home-based care. This scalable, user-friendly platform bridges the gap between lab-grade sensing and practical rehabilitation, offering a versatile solution for personalized biomechanical monitoring.

Abstract Image

查看原文本刊更多论文

电纺丝压阻式压力传感器集成在一个软球中，用于便携式，无电池监测手的握力

手部握力是评估肌肉功能和康复进展的关键生物标志物，但现有的测量系统体积庞大，价格昂贵，并且仅限于临床环境，限制了可及性。我们报告了一种便携式、低成本的监测系统，该系统使用软球形装置嵌入高灵敏度、可扩展的多壁碳纳米管（MWCNTs）增强电纺热塑性聚氨酯纳米纤维传感器。该传感器在10 N负载下显示600%的相对电流变化，并在500个周期内保持稳定性，从而实现精确的抓地力评估。该系统集成在弹性球中，通过近场通信无线传输数据，无需电池即可实现智能手机实时监控。结果证实了手间力量差异的可靠检测，证明了康复和家庭护理的临床适用性。这种可扩展的，用户友好的平台弥合了实验室级传感和实际康复之间的差距，为个性化生物力学监测提供了一个通用的解决方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Materials & Design Engineering-Mechanical Engineering

CiteScore

14.30

自引率

7.10%

发文量

1028

审稿时长

85 days

期刊介绍： Materials and Design is a multi-disciplinary journal that publishes original research reports, review articles, and express communications. The journal focuses on studying the structure and properties of inorganic and organic materials, advancements in synthesis, processing, characterization, and testing, the design of materials and engineering systems, and their applications in technology. It aims to bring together various aspects of materials science, engineering, physics, and chemistry. The journal explores themes ranging from materials to design and aims to reveal the connections between natural and artificial materials, as well as experiment and modeling. Manuscripts submitted to Materials and Design should contain elements of discovery and surprise, as they often contribute new insights into the architecture and function of matter.