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Piezoresistive and Mechanics Properties of Nano Polycrystalline Silicon Film Materials Xuebin LU1, a, Linhai CUI1 and Hai HUANG1 1 Department of Integrate Circuit Design and Integrate System, Harbin University of Science and Technology, Harbin 150080, China alxbsw@126.com Keywords: Nano Polycrystalline Silicon, Gauge Factor, Young’s Modulus.
Introduction The researches about nano materials developed rapidly in 21st century [1].
Two dimension nano materials is a kind of film whose thickness is less than 100nm, i.e. nano film [2].
By auto mode of loading control, TriboIndenter system fulfills the continuous loading and unloading of materials.
Acknowledgments The authors acknowledge the support from Young Science Foundation of Harbin University of Science and Technology under Grant No. 1025-2011020.

The k is the elastic materials parameter defined by: Plane stress Plane strain k= (3) In this study the crack direction has to be determined under linear elastic condition.
Acknowledgments The authors would like to thank Keretapi Tanah Melayu Berhad (KTMB) for supplying the rail track materials and to Ministry of Science, Technology and Innovation (MOSTI: 03-01-02-SF0052) for sponsoring this work.
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LiFePO4 is superior to other materials because of its low cost, non-toxicity, high specific capacity and moderate working voltage [2-4].
The excellent cyclic stability is ascribed to the doping of K ion that can improve the electronic conductivity of materials.
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The used material constants are listed in Table1.
The used material is Kevlar-epoxy or Graphite-epoxy.
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Two type of materials were used.
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Finally the assumption is validated through experimental tests carried out with two different matrix materials.
IV we test our conclusion for two different matrix materials at the same situation.
Fig.6 The experimental facility The curves of output displacement of the smart component with two different matrix materials are shown as Fig.7.
At last the conclusion has been tested by the experiments with two different matrix materials at the same situation.
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For example, the gas-assisted injection molding that hollows out the interior plastic parts to reduce the use of plastic materials.
Thermoplastic polyurethane (TPU) which selected in this study is also one of the environmentally friendly plastic materials that can self-decompose.
Tobolsky, Properties of linear elastomeric polyurethanes, Journal of Applied Polymer Science 10 (1966) 1837-1844
Zheng, Effect of polytetrafluoroethylene on the foaming behaviors of linear polypropylene in continuous extrusion, Journal of Applied Polymer Science 129 (2013) 2253-2260
Wang, High thermal insulation and compressive strength polypropylene foams fabricated by high-pressure foam injection molding and mold opening of nano-fibrillar composites, Materials & Design 131 (2017) 1-11.

Gypsum retarder is an important additive of building materials.
With the advancement of science and technology, people have become increasingly demanding with building materials.
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In term of oxidizable substate, it is may be any molecule that can be found in foods or biological materials including carbohydrates, DNA, lipids and proteins [21].
“Top down” approach is a process breaking up bulk materials using milling, nanolithography, or precision engineering to generated a nano-level structures.
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