Pencil drawn interdigitated capacitive sensors on wood substrate  

作　　者：Abhay Singh Thakur Vinit Srivastava Rahul Vaish 

机构地区：[1]Indian Institute of Technology Mandi,Himachal Pradesh,India

出　　处：《Advanced Sensor and Energy Materials》2024年第4期10-17,共8页先进传感器与能源材料（英文）

摘　　要：This research presents the fabrication and characterization of an interdigitated capacitive(IDC)sensor on a wooden substrate using pencil traces.The resistance of the pencil traces decreased from 100 kΩto 5 kΩas the pencil grade shifted from HB to 8B.Concurrently,capacitance measurements revealed an increase from approximately 5 pF for a 5-finger IDC made with HB pencil to around 32 pF for an 8B pencil counterpart.Increasing the number of pencil traces from 10 to 50 resulted in a significant decrease in resistance and a proportional increase in capacitance.Application of the IDC sensor demonstrated notable changes in capacitance upon proximity and touch,with a significant decrease upon removal.The interdigitated capacitance sensor exhibits good proximity effects and contact sensitivity in touch,with capacitance increasing exponentially from 0.3 pF(7 cm)to 1.2 pF(direct contact),highlighting its ability to detect objects with high precision.Additionally,environmental factors such as temperature and humidity influence capacitance values.These findings underscore the potential of pencil-drawn IDC sensors for responsive and adaptable applications in various fields.

关 键 词：Pencil Wood SENSORS CAPACITOR Triple-mode sensor 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]