A comparative study on hydrostatic pressure response of sensors based on N-doped, B-doped and undoped carbon-sphere poly (vinyl alcohol) composites

被引：10
作者：
Mamo, Messai A. [1 ]
Machado, Wagner S. [1 ]
Coville, Neil J. [2 ,3 ]
Huemmelgen, Ivo A. [1 ]
机构：
[1] Univ Fed Parana, Dept Fis, BR-81531990 Curitiba, Parana, Brazil
[2] Univ Witwatersrand, DST NRF Ctr Excellence Strong Mat, ZA-2050 Johannesburg, South Africa
[3] Univ Witwatersrand, Inst Mol Sci, Sch Chem, ZA-2050 Johannesburg, South Africa
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2012年 / 23卷 / 07期
关键词：
AMORPHOUS-CARBON; NANOTUBE; RAMAN; PYROLYSIS; FILMS;
D O I：
10.1007/s10854-011-0594-4
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We determine the conductance and capacitance sensitivity of simple hydrostatic pressure sensors based on carbon sphere (undoped, N-doped and B-doped)-poly(vinyl alcohol) composite films deposited onto interdigitated electrodes. We observe that the use of doped carbon spheres results in increased sensitivity variation with respect to pressure when compared to undoped ones, in a range near to atmospheric pressure. For higher pressures of ca. 200 kPa, however, the conductance and capacitance sensitivity of sensors based on undoped carbon spheres is significantly higher, due to a superlinear dependence of both sensitivities on pressure.
引用
收藏
页码：1332 / 1337
页数：6
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