Effects of conductive phase content on critical pressure of carbon black filled silicone rubber composite

Soft piezoresistive sensor model and characterization with varying design parameters

“…In this model, the input deformation causes displacements on two stages which can be attributed to the volume change in the material x (an indication of the particle distance in the direction of the main deformation) and the lateral displacement u. As mentioned in the introduction, the lateral deformation causes increase in the resistance which can be explained by the theories based on the destruction of the conductive paths [25,26]. This is in accordance with the transient behavior of the sensor (see Fig.…”

“…A review on different methods of strain sensing and models for piezoresistive materials are found in [24]. Among the micro-scale models suggested for the resistance change of the piezoresistive materials, the theory based on the destruction of the conductive paths [25,26] explains the increase in the resistance of the carbon silicone composite materials (used for fabrication of the CSC sensors) under compression. The same theory also explains the transient response observed for all sensors studied in this paper.…”

Impedance characteristics of surface pressure-sensitive carbon black/silicone rubber composites

“…Pressure-sensitive materials based on piezoresistive-sensing mechanisms are widely used owing to their attractive advantages, including feasible preparation, low cost, and easy signal collection [12]. Therefore, they are potential to be used to develop flexible pressure-sensitive sensors [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27].…”

The role of interfacial compatibilizer in controlling the electrical conductivity and piezoresistive behavior of the nanocomposites based on RTV silicone rubber/graphite nanosheets

“…The composites can be used in a large range of temperatures, and have outstanding weather and chemical resistance properties. Luheng and coworkers [18] investigated piezoresistive behavior of carbon black filled SR composites and reported a critical pressure that NPCR and PPCR behavior is exhibited by the composite below and above this pressure. They have also found that the value of the critical pressure increases with increasing carbon black concentration.…”