物理与工程

纸基器件以其低成本、高便携性、安全环保和工艺简单等特点，逐渐成为研究的热点。本文选题来自于2020年国际青年物理学家锦标赛第十题，“Conducting Lines”。在本文中，我们设计实验方案，搭建了控制压力变量的画线实验装置，用铅笔制作了不同类型的电阻和电容型纸基器件。对铅笔画出的“导线”构建的纸基器件进行测试，并从等效电路原理出发分析，测量了相关电学参数并探究其直流和交流特性。实验结果与理论分析符合较好。本文工作提供了一种简单易行的基于纸基器件的电路特性的教学实验方法，适用于本科实验教学。

Paper-based devices have gradually become research hotspots due to their low cost, high portability, safety, environmental protection, and simple process. The topic of this paper comes from the tenth question of the 2020 International Young Physicists' Tournament, “Conducting Lines”. In this paper, we designed an experimental program, built a scribing experiment device to control pressure variables, and made different types of resistor and capacitor paper-based devices with pencils. The paper-based devices constructed by the “wires” drawn by pencils were tested, analyzed from the principle of equivalent circuit, and related electrical parameters were measured, and their DC and AC characteristics were explored. The experimental results are in good agreement with the theoretical analysis. The work in this paper provides a simple and practical teaching experiment method based on the circuit characteristics of paper-based devices, which is suitable for undergraduate experiment teaching.