Flexible capacitive pressure sensor with high sensitivity and wide detection range applying solvent-exchanged porous lignin-cellulose hydrogel as the dielectric layer.

• Tác giả: Yuhan Huang, Yuyang Huang, Zhida Li, Huan Liu, Dingyi Ren, Jianlang Shu, Jiafu Song, Junyao Wang, Tinggang Zhang
• Ngôn ngữ: eng
• Thông tin xuất bản: Netherlands : International journal of biological macromolecules , 2025
• Bộ sưu tập: NCBI
• ID: 193731

Tóm tắt

Recently, the application of flexible sensors for wearable devices has attracted much attention from researchers. This study reports a capacitive pressure sensor with a solvent-exchanged porous lignin-cellulose hydrogel as the dielectric layer (SPLCH). The detection range and sensitivity of the sensor were modulated by adjusting the ratio of alkaline lignin(AL) and sodium lignosulfonate(SL). The existence of the porous structure and the ester bonds generated by cross-linking were demonstrated by material characterization experiments. The compression modulus of SPLCH is in the range of 310-320 kPa. The capacitive pressure sensing prepared in this way has a sensitivity of 5.18kPa