Ti doped SiOC precursor to activate gyroid sensing structures

Shixiang Zhou, Li Yao, Tong Zhao, Hui Mei, Laifei Cheng, Litong Zhang

科研成果: 期刊稿件文章同行评审

18 引用 (Scopus)

摘要

Ti-doped polymer-derived SiOC ceramic has multi-functional sensing capability due to its semiconductive properties. Their mechanical and chemical stability provide reliable support for their long-term service and safe operation in extreme environments. The sensing properties of Ti-doped SiOC (SiTiOC) can be optimized by modulation carrier concentration. Meanwhile, it can be fabricated by 3D printing as structural-strengthened components, promising for abnormal environmental signals warning under harsh conditions. In this work, SiTiOC gyroid structures were constructed by vat photopolymerization. The resulting components had thermistor characteristics with a negative temperature coefficient. After the Ti doping, the structures exhibited a high conductivity of 1.10 S/m, as the Ti ions formed an efficient percolation network by introducing acceptor impurities. The structures also had piezoresistive capability as the conductive phases can generate a tunneling-percolation conduction effect. They can detect a strain of less than 0.5%. Furthermore, the structures can realize n-butanol sensing for their p-type semiconductor properties. The components also had an excellent mechanical performance with the compressive strength and Young's modulus of 92.83 MPa and 4.28 GPa, respectively, ensuring reliable service under pressure loading.

源语言英语
页(从-至)253-263
页数11
期刊Carbon
196
DOI
出版状态已出版 - 30 8月 2022

指纹

探究 'Ti doped SiOC precursor to activate gyroid sensing structures' 的科研主题。它们共同构成独一无二的指纹。

引用此