南方科技大学知识苑(SUSTech KC): 基于 PDMS 的柱面阵列式柔性力传感器研究

题名	基于 PDMS 的柱面阵列式柔性力传感器研究
其他题名	RESEARCH ON CYLINDRICAL FLEXIBLE PRESSURE SENSOR ARRAY BASED ON PDMS
姓名	史妍
姓名拼音	SHI Yan
学号	12132565
学位类型	硕士
学位专业	0856 材料与化工
学科门类/专业学位类别	0856 材料与化工
导师	熊璟
导师单位	中国科学院深圳先进技术研究院
论文答辩日期	2023-05-17
论文提交日期	2023-07-06
学位授予单位	南方科技大学
学位授予地点	深圳
摘要	柔性压力传感器因其能够模仿人体皮肤的触觉功能，在电子皮肤、人机交互以及健康监测等领域得到了广泛研究。在普通外科诊疗中，医生常通过触摸患者的组织来对患者进行诊断；但在消化内镜手术中，医生无法通过触觉反馈来确定组织异常，缺乏触觉反馈可能对正常组织造成损伤，这极大增加了内镜诊疗的不确定性和风险。针对此问题，本文设计并制备了一种圆柱状的离-电式压力传感器阵列，可集成到消化内镜的前端，在诊疗过程中为医生提供触觉信息，提高内镜诊疗的效率和安全性。离-电式压力传感器因具有高灵敏度、高信噪比以及便于信号采集等优点得到了广泛研究；在传感器中引入微结构可有效提高传感器的性能。因此，本文采用刮涂法制备了聚二甲基硅氧烷（Polydimethylsiloxane, PDMS）/银浆柔性电极，并采用溶液浇铸法制备了无微结构、金字塔微结构以及圆柱微结构的聚偏氟乙烯-六氟丙烯（Polyvinylidene Fluoride-Hexafluoropropylene, PVDF-HFP）/离子液体（Ionic Liquid, IL）离子凝胶介电层，在消化内镜前端将电极和介电层以三明治结构进行组装形成柱面压力传感器阵列。对传感器的性能进行了测试，测试结果表明金字塔微结构的传感器具有较高灵敏度（0.39 kPa-1）、快速响应/恢复时间（46 ms）以及良好的循环稳定性（1200次加/卸载循环），满足消化道触觉感知的需求。此外，本文设计了阵列式传感器数据采集系统，在消化道模型中进行了触觉感知实验，结果表明该柱面传感器阵列可以帮助医生获取触觉信息，这将有助于提高内镜诊疗的效率和安全性。所设计的传感器及触觉感知系统在医疗健康领域具有良好的应用前景和价值。
其他摘要	Flexible pressure sensors have been widely studied in the fields of electronic skin, human-computer interaction and health monitoring because of their ability to mimic the tactile function of human skin. In general surgery, doctors often diagnose patients by touching their tissues; however, in gastrointestinal endoscopy, doctors are unable to identify tissue abnormalities through tactile feedback, and the lack of tactile feedback may cause damage to normal tissues, which greatly increases the uncertainty and risk of endoscopic procedures. To address this problem, this paper designs and prepares a cylindrical iontronic pressure sensor array that can be integrated into the front end of a gastrointestinal endoscope to provide tactile information to the physician during treatment, improving the effectiveness and safety of endoscopic treatment. Iontronic pressure sensors have been widely studied for their advantages of high sensitivity, high signal-to-noise ratio and ease of signal acquisition. The introduction of microstructures in the sensors can effectively improve the performance of the sensors. Therefore, in this paper, PDMS/silver paste flexible electrodes were prepared by the scrape coating method, and PVDF-HFP/IL ionic gel dielectric layers without microstructure, pyramidal microstructure and cylindrical microstructure were prepared by the solution casting method. The electrode and dielectric layer are assembled with a sandwich structure at the front end of the digestive endoscopy to form a cylindrical pressure sensor array. The performance of the sensors was tested and the results showed that the pyramidal microstructure had high sensitivity (0.39 kPa^-1), fast response/recovery time (46 ms) and good cycling stability (1200 loading/unloading cycles), which meets the need of tactile perception of the digestive tract. In addition, this paper designed an array sensor data acquisition system and performed haptic perception experiments in a digestive tract model, the results showed that the cylindrical sensor array can help doctors to obtain haptic information, which will help to improve the effectiveness and safety of endoscopic treatment. The designed sensor and haptic sensing system has good prospects and value for application in the medical and health field.
关键词	柱面压力传感器阵列微结构 PDMS 离子凝胶消化内镜
语种	中文
培养类别	独立培养
入学年份	2021
学位授予年份	2023-06
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所在学位评定分委会	材料与化工
国内图书分类号	TP212
来源库	人工提交
成果类型	学位论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/545145
专题	中国科学院深圳理工大学（筹）联合培养
推荐引用方式 GB/T 7714	史妍. 基于 PDMS 的柱面阵列式柔性力传感器研究[D]. 深圳. 南方科技大学,2023.

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