TY - JOUR
T1 - Tetrachiral honeycomb regulated polymer-derived SiFeOC ceramics with tunable piezoresistive effect
AU - Zhao, Tong
AU - Lu, Mingyang
AU - Mei, Hui
AU - Liu, Chidong
AU - Yang, Dou
AU - Cheng, Laifei
AU - Zhang, Litong
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/6/15
Y1 - 2023/6/15
N2 - Sensitivity-adjustable piezoresistive SiFeOC ceramic with tetrachiral honeycomb structures has been presented for pressure detection under harsh environments. The 3D structuralized piezoresistive structures exhibited marked structure-dependent sensing performance, providing another dimension for detection limit and sensitivity tunning. Digital light processing technique printed the Fe-doped SiOC tetrachiral honeycombs, in which Fe acted as a dopant for conductivity modification. Due to the activation of the percolation network consisting of free carbon in an amorphous matrix, the conductivity of the SiFeOC sensing structure reached 3.08 S/m. Meanwhile, the sensitivity of the structures can be optimized by adjusting rotation angles due to the negative Poisson's ratio (NPR) characteristics that provided tunable modulus, leading to a rise in the gauge factor from 169 to 796. The rotation angle adjustment also optimized the mechanical performance of the sensing structure, yielding a compression strength of 24.11 MPa. The robustness in load-bearing capacity also ensured long-term cyclic detection stability, realizing an intelligent piezoresistive structure with high strength and environmental tolerance.
AB - Sensitivity-adjustable piezoresistive SiFeOC ceramic with tetrachiral honeycomb structures has been presented for pressure detection under harsh environments. The 3D structuralized piezoresistive structures exhibited marked structure-dependent sensing performance, providing another dimension for detection limit and sensitivity tunning. Digital light processing technique printed the Fe-doped SiOC tetrachiral honeycombs, in which Fe acted as a dopant for conductivity modification. Due to the activation of the percolation network consisting of free carbon in an amorphous matrix, the conductivity of the SiFeOC sensing structure reached 3.08 S/m. Meanwhile, the sensitivity of the structures can be optimized by adjusting rotation angles due to the negative Poisson's ratio (NPR) characteristics that provided tunable modulus, leading to a rise in the gauge factor from 169 to 796. The rotation angle adjustment also optimized the mechanical performance of the sensing structure, yielding a compression strength of 24.11 MPa. The robustness in load-bearing capacity also ensured long-term cyclic detection stability, realizing an intelligent piezoresistive structure with high strength and environmental tolerance.
KW - 3D printing
KW - Piezoresistive sensor
KW - Polymer-derived ceramics
KW - Sensitivity adjustable
UR - http://www.scopus.com/inward/record.url?scp=85156149691&partnerID=8YFLogxK
U2 - 10.1016/j.carbon.2023.118076
DO - 10.1016/j.carbon.2023.118076
M3 - 文章
AN - SCOPUS:85156149691
SN - 0008-6223
VL - 210
JO - Carbon
JF - Carbon
M1 - 118076
ER -