柔性可延展的皮肤电子温度传感器设计
时间:2020-01-03 20:54 来源:毕业论文 作者:毕业论文 点击:次
| 摘要皮肤作为人体最大的器官和保护层有着多方面的传感能力，包括触觉，痛觉，感知温度以及有效控制体温和体液交换的能力等。这些功能都直接或间接地与皮肤的热传导性质相关。将高精度大面积温度传感器应用在皮肤上获得有效的皮肤温度信息和热传导性质可以为日常体征以及临床病理状况监测ᨀ供相关重要信息。传统的皮肤热成像方法包括昂贵的红外热像仪或单点探针式电学温度传感器。这些传统的皮肤热成像方式在投入临床使用时都存在一定的局限性。本次毕业设计建立在力学性质近似皮肤的柔性液晶光子温度传感系统的基础上，改进目前单个无线柔性加热器的设计，采用分形几何的方法设计高密度多电阻加热器阵列，在保证高密度器件的可延展性同时，通过多点加热的方法以实现更复杂精确的皮肤热传导性质的研究。课题还设计集成轻便的电池系统以实现对电阻加热器的供能和真正可穿戴的应用，并通过光刻技术和电学表征验证了器件制备的可行性。 43608 毕业论文关键词 皮肤热性质 温度传感 光子传感 可延展电子器件 可穿戴传感器 Title Soft and Stretchable Electronics for Epidermal Thermal Imaging Abstract As the largest organ and protective layer of human body, human skin has many sensing capabilities, including tactile, pain, skin temperature and the ability to control body temperature and fluid exchange. Most of the functions are all related to thermal properties of human skin. Traditional methods for skin thermography use either sophisticated and expensive infrared digital cameras, or simple, paste-on temperature sensors for single-point measurements. These and other related technologies have value in certain contexts, but they also have some limitations in clinical use. Previous work has integrated thermochromic liquid crystals and stretchable wireless metal heater for an ultra soft and compliant epidermal sensor device. Such system showed great promise in simple, precise skin thermal property measurements in clinical and daily usage. However, the wireless single heater design is not sufficient and ideal for daily skin property monitoring. This project is aimed to design an ultra stretchable heater array with higher device density based on the concept of self-similar fractal geometry. With the multi-point heating capacity, the liquid crystal sensor system can be useful for a more comprehensive study of skin thermal properties. Integrated with a portable battery system would achieve a low-cost, well-controlled wearable sensor system for commercial applications. Photolithographic technique and electrical characterization has proved the feasibility of this design. Keywords skin thermal property；temperature sensor ；photonic sensor ；stretchable electronics ；wearable sensor 目次 1绪论..1 1.1课题研究背景.1 1.3课题背景下的研究内容..2 2加热器阵列设计的理论基础5 2.1几何设计理念.5 2.2柔性光子液晶温度传感系统..7 2.3转印技术.9 2.4加热器阵列设计方案的选择10 2.5本章小结...12 3加热器阵列的设计结果..13 3.1加热器阵列的实现...13 3.2加热器阵列的性能...14 3.3结果分析15 3.4本章小结...16 4器件制备和性能表征..17 4.1器件制作步骤...17 4.2代表性实验结果...18 4.3本章小结...20 结论...22 致谢...23 参考文献.24
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