Flexible Graphite-on-Paper Piezoresistive Sensors

Abstract

We demonstrate novel graphite-on-paper piezoresistive devices. The graphite was used as sensing component. The fabrication process can be finished in a short time with simple tools (e.g., a scissor and a pencil). A small array of six paper-based piezoresistive devices is made. The whole device is flexible. The test results showed that the change of resistance was proportional to the applied force. A paper-based weighing balance was also made as an example of applications. This novel array of paper-based piezoresistive devices will open wide applications in force and acceleration sensing areas.

Modelagem Matemática de Elementos Sensores Usando Grafite

“…Os contatos elétricos foram feitos com fios de cobre [5]. Para verificar a uniformidade da deposição do grafite, utilizou-se um microscópio digital (Dino-lite modelo AM-313T ).…”

“…A estrutura para testes do elemento sensor baseou-se no método da viga engastada [4,5], onde a partir da aplicação de um esforço mecânico transversal e longitudinal ( T T e T L ) e da variação da temperatura (∆θ), foi possível analisar os fatores de sensibilidade do material, a variação da resistência elétrica (∆R), o Gauge Factor (GF) e os coeficientes piezoresistivos transversais e longitudinais (π T e π L ).…”

Graphite-on-paper based tactile sensors using plastic laminating technique

“…Graphite-on-paper (GoP) has emerged as a promising candidate for mechanical transducers [11][12][13][14][15][16]. The main advantages of GoP are its low cost, world wide availability, and simple fabrication process.…”

Bioinspired Electronic Whisker Arrays by Pencil‐Drawn Paper for Adaptive Tactile Sensing

“…The whiskers (or vibrissae) of these animals provide remarkable tactile units to sense the external environment. [ 12,[16][17][18][19][20] Moreover, personalized strain sensors can be easily fabricated only with a pencil, a pair of scissors, and a piece of paper in a few minutes. Nowadays, new approaches for developing artifi cial electronic whiskers (e-whiskers) to mimic mammalian vibrissal tactile perception are of great importance in advanced robotics, [1][2][3][4] artifi cial intelligence, [ 5 ] and human-machine interfaces.…”