發(fā)布時(shí)間：2018-06-01 07:35

  本文選題：二維黑磷晶體 + 各向異性��； 參考：《天津大學(xué)學(xué)報(bào)(自然科學(xué)與工程技術(shù)版)》2017年05期

【摘要】：利用基于原子力顯微鏡的懸臂梁彎曲法,對(duì)二維黑磷晶體兩個(gè)特殊晶軸方向的彈性模量進(jìn)行測(cè)量.通過有限元仿真對(duì)懸臂梁結(jié)構(gòu)建模計(jì)算,分析了影響測(cè)量結(jié)果精度的因素:懸臂梁彎曲變形量-厚度比、懸臂梁的長(zhǎng)寬比和黑磷晶體彈性模量各向異性.結(jié)果表明,懸臂梁長(zhǎng)寬比相對(duì)于變形量-厚度比、彈性模量各向異性,對(duì)測(cè)量結(jié)果影響更大,其最大相對(duì)誤差達(dá)-40%,.通過有限元仿真分析,可以修正懸臂梁彎曲法力學(xué)模型中誤差,從而得到更準(zhǔn)確的測(cè)量結(jié)果.
[Abstract]:The elastic modulus of two special crystal axes of two dimensional black phosphorus crystals was measured by the cantilever beam bending method based on atomic force microscope (AFM). Based on the finite element simulation, the factors influencing the measurement accuracy are analyzed: the ratio of bending deformation to thickness of cantilever beam, the ratio of length to width of cantilever beam and the anisotropy of elastic modulus of black phosphorus crystal. The results show that the ratio of length to width relative to the ratio of deformation to thickness, the anisotropy of elastic modulus has a greater influence on the measured results, and the maximum relative error is up to -40. Through the finite element simulation analysis, the error in the bending normal force model of cantilever beam can be corrected, and more accurate measurement results can be obtained.
【作者單位】： 天津大學(xué)精密儀器與光電子工程學(xué)院;天津大學(xué)材料科學(xué)與工程學(xué)院;
【基金】：“111”計(jì)劃資助項(xiàng)目(B07014)~~
【分類號(hào)】：O732

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本文編號(hào)：1963390