Brown L F
Biomed Sci Instrum. 1989;25:119-26.
The unique properties of piezoelectric/pyroelectric polymers offer many new opportunities for biomedical engineering sensor applications. Since their discovery nearly 20 years ago, the polymer films have been used for many novel switching and sensor applications. Despite the prodigious exposure from many recent publications describing piezo film applications, methods of sensor fabrication and circuit interfacing still elude most engineers. This paper is presented as a tutorial guide to applying piezo polymers to biomedical engineering applications. A review of the fundamentals of piezoelectricity/pyroelectricity in piezo polymers is first presented. Their material properties are contrasted with piezoelectric ceramic materials. Some advantages and disadvantages of the films for biomedical sensors are discussed. Specific details on the fabrication of piezo film sensors are presented. Methods are described for forming, cutting, and mounting film sensors, and making lead connections. A brief discussion of equivalent circuit models for the design and simulation of piezoelectric/pyroelectric sensors is included, as well as common circuit interface techniques. Finally, several sources are recommended for further information on a variety of biomedical sensor applications.
压电/热释电聚合物的独特性能为生物医学工程传感器应用提供了许多新机遇。自近20年前被发现以来，聚合物薄膜已被用于许多新颖的开关和传感器应用。尽管近期有大量出版物介绍了压电薄膜的应用，但传感器制造和电路接口方法仍让大多数工程师难以捉摸。本文旨在作为将压电聚合物应用于生物医学工程应用的教程指南。首先介绍了压电聚合物中压电性/热释电性的基本原理。将它们的材料特性与压电陶瓷材料进行了对比。讨论了薄膜用于生物医学传感器的一些优缺点。介绍了压电薄膜传感器制造的具体细节。描述了形成、切割和安装薄膜传感器以及进行引线连接的方法。还包括对用于压电/热释电传感器设计和仿真的等效电路模型的简要讨论，以及常见的电路接口技术。最后，推荐了几个获取关于各种生物医学传感器应用更多信息的来源。
