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With the development of sensors, a study on carbon nanotube composites (CNT) used as force sensing elements is presented in this paper, which consists of carbon nanotubes with polydimethylsiloxane (PDMS) as a matrix. Nanocomposites of carbon nanotube and polydimethylsiloxane, CNT-PDMS with different filler concentrations have been successfully prepared via ultrasonic and mixed method. With different density, the electrical characteristics change as a function of the strain. The piezo-resistance and piezo-capacitance properties of these composites have been studied in detail. In our experiment, the gauge factor has reached 40 for piezo-resistance and 70 for piezo-capacitance. It is shown that there is an effective and reliable way, which is to change the density of CNT-PDMS nanocomposites, to set the features to sensing strain and stress for resistance and capacitance of the composites. This nanomaterial has a decent potential in mechanical quantity sensors field.
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Keywords:
- carbon nanotube /
- polydimethylsiloxane composite material /
- force-sensitive sensor /
- high sensitivity
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[8] Li S K, Tang J, Mao H Q, Wang M H, Chen G B, Zhai C, Zhang X M, Shi Y B, Liu J 2014 Acta Phys. Sin. 63 057501 (in Chinese) [李圣昆, 唐军, 毛宏庆, 王明焕, 陈国彬, 翟超, 张晓明, 石云波, 刘俊 2014 63 057501]
[9] He L X, Tjong S C 2013 Nanoscale Res. Lett. 8 132
[10] Wang L, Dang Z M 2005 Appl. Phys. Lett. 87 042903
[11] Jiang M J, Dang Z M, Xu H P 2007 Appl. Phys. Lett. 90 042914
[12] Huang J Q, Hong L X, Han G R, Weng W J, Du P Y 2006 Acta Phys. Sin. 55 3664 (in Chinese) [黄集权, 洪兰秀, 韩高荣, 翁文剑, 杜丕一 2006 55 3664]
[13] Herrmann J, Mller K H, Reda T, Baxter G R, Raguse B, de Groot G J J B, Wieczorek L 2007 Appl. Phys. Lett. 91 183105
[14] Ibañez F J, Zamborini F P 2012 Small 8 174
[15] Olichwer N, Leib E W, Halfar A H, Petrov A, Vossmeyer T 2012 ACS Appl. Mater. Inter. 4 6151
[16] Zhou J, Fei P, Gu Y, Mai W, Gao Y, Yang R, Wang Z L 2008 Nano Lett. 8 3973
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[1] Lipomi D J, Vosgueritchian M, Tee B C, Hellstrom S L, Lee J A, Fox C H, Bao Z 2011 Nat. Nanotechnol. 6 788
[2] Fan F R, Lin L, Zhu G, Wu W, Zhang R, Wang Z L 2012 Nano Lett. 12 3109
[3] Yamada T, Hayamizu Y, Yamamoto Y, Yomogida Y, Izadi-Najafabadi A, Futaba D N, Hata K 2011 Nat. Nanotechnol. 6 296
[4] Wang Y T, Liu Z D, Yi J, Xue Z Y 2012 Acta Phys. Sin. 61 057302 (in Chinese) [王永田, 刘宗德, 易军, 薛志勇 2012 61 057302]
[5] Hu G J, Cao B Y 2014 Chin. Phys. B 23 096501
[6] Takei K, Yu Z, Zheng M, Ota H, Takahashi T, Javey A 2014 Proc. Natl. Acad. Sci. 20 1317920
[7] Xu W J, Kranz M, Kim S H, Allen M G 2010 J. Micromech. Microeng. 20 104003
[8] Li S K, Tang J, Mao H Q, Wang M H, Chen G B, Zhai C, Zhang X M, Shi Y B, Liu J 2014 Acta Phys. Sin. 63 057501 (in Chinese) [李圣昆, 唐军, 毛宏庆, 王明焕, 陈国彬, 翟超, 张晓明, 石云波, 刘俊 2014 63 057501]
[9] He L X, Tjong S C 2013 Nanoscale Res. Lett. 8 132
[10] Wang L, Dang Z M 2005 Appl. Phys. Lett. 87 042903
[11] Jiang M J, Dang Z M, Xu H P 2007 Appl. Phys. Lett. 90 042914
[12] Huang J Q, Hong L X, Han G R, Weng W J, Du P Y 2006 Acta Phys. Sin. 55 3664 (in Chinese) [黄集权, 洪兰秀, 韩高荣, 翁文剑, 杜丕一 2006 55 3664]
[13] Herrmann J, Mller K H, Reda T, Baxter G R, Raguse B, de Groot G J J B, Wieczorek L 2007 Appl. Phys. Lett. 91 183105
[14] Ibañez F J, Zamborini F P 2012 Small 8 174
[15] Olichwer N, Leib E W, Halfar A H, Petrov A, Vossmeyer T 2012 ACS Appl. Mater. Inter. 4 6151
[16] Zhou J, Fei P, Gu Y, Mai W, Gao Y, Yang R, Wang Z L 2008 Nano Lett. 8 3973
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