☰

如何在 TikZ 中制作类似抛物线的形状 + 颜色叠加？

tag-icon • tag-icon tikz-pgf tikz-graphdrawing
如何在 TikZ 中制作类似抛物线的形状 + 颜色叠加？

所以我试图制作一个类似这样的图

enter image description here

这是我目前所拥有的：

enter image description here

  • 我怎样才能制作出类似抛物线的形状（蓝色）？

  • 如何进行颜色叠加？

        \documentclass[tikz,border=2mm]{standalone}
    \begin{document}
    \tikzset{>=latex}
    \begin{tikzpicture}
    \shade[top color=orange!30!white,bottom color=orange!30!white] 
    (0,0.5) parabola (0.9,2.7) |- (0,2.7);
    \shade[top color=orange!30!white,bottom color=orange!30!white] 
    (0,0.5) parabola (-0.9,2.7) |- (0,2.7);

    \draw[->=stealth, thick] (0,0)--(2.5,0) node[right]            {$g_\uparrow\left(E\right)$};
    \draw[->=stealth, thick] (0,0)--(-2.5,0) node[left]            {$g_\downarrow\left(E\right)$};
    \draw[->=stealth, thick] (0,-2)--(0,4) node[above]{$E$};

    \draw (0,0.5) parabola (1,3.2);
    \draw (1.7,2.7) -- (0,2.7);   
    \draw (0,0.5) parabola (-1,3.2);
    \draw (-1.7,2.7) -- (0,2.7);
    \node[] at (2.1,2.7) {$E_F$};
    \end{tikzpicture}
    \end{document}

答案1

请参阅我尝试解决您的问题后的以下结果:-)

enter image description here

    \documentclass[tikz,border=2mm]{standalone}
    \begin{document}
    \begin{tikzpicture}[>=stealth]
\fill[red!30!white]
        (-0.9,2.7) parabola bend (0,0.5) (0.9,2.7) -- cycle;
\draw   (-1.0,3.2) parabola bend (0,0.5) (1.0,3.2);
%
\draw[<->,thick] 
        (-2.5,0) node[left]  {$g_\uparrow\left(E\right)$} --
        ( 2.5,0) node[right] {$g_\downarrow\left(E\right)$};
\draw[->, thick] (0,-2)--(0,4) node[above]{$E$};
\draw   (-1.7,2.7) -- (1.7,2.7)  node[right] {$E_F$};
%
\draw[fill=blue!50,semitransparent,rotate=90, xshift=17mm]
        (-0.8,0) parabola bend (0,-1) (0.8,0) -- cycle;
\clip (0,2.7) rectangle +(-1,-1.6);
\draw[fill=blue!50,semitransparent,rotate=90, xshift=25mm]
        (-0.8,0) parabola bend (0,1) (0.8,0) -- cycle;
    \end{tikzpicture}
    \end{document}

相关内容