Giant piezoresistivity in polymer-derived amorphous SiAlCO ceramics
Giant piezoresistivity in polymer-derived amorphous SiAlCO ceramics
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DOI：
10.1007/s10853-016-9866-y
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发表时间：
2016-06-01
影响因子：
4.5
通讯作者：
An, Linan
中科院分区：
文献类型：
--
作者：
Cao, Yejie;Yang, Xueping;An, Linan
The piezoresistive behavior of polymer-derived amorphous SiAlCO ceramic is studied in a temperature range of 25-300 A degrees C. It is shown that the material exhibits a giant gage factor of 7000-16,000, much higher than that for any reported high-temperature materials. The result also reveals that the material exhibits a positive temperature-dependent piezoresistive stress coefficient within the temperature range. The unusual piezoresistivity of the material was attributed to the structure of the SiAlCO, which consists of highly disordered graphene-like carbon nanoclusters dispersed within an amorphous matrix comprising of SiC (x) O4-x tetrahedra. The huge piezoresistivity, together with the processibility and low-cost, make the material very promising for high-temperature sensor applications.
