Merge branch 'master' into master

1 files changed, 73 insertions, 0 deletions

diff --git a/buch/papers/punktgruppen/tikz/piezo.tex b/buch/papers/punktgruppen/tikz/piezo.tex
new file mode 100644
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+++ b/buch/papers/punktgruppen/tikz/piezo.tex
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+\documentclass[tikz]{standalone}
+\usepackage{amsmath}
+\usepackage{times}
+\usepackage{txfonts}
+
+\usetikzlibrary{arrows}
+\usetikzlibrary{intersections}
+\usetikzlibrary{math}
+\usetikzlibrary{positioning}
+\usetikzlibrary{arrows.meta}
+\usetikzlibrary{shapes.misc}
+\usetikzlibrary{calc}
+
+\begin{document}
+\begin{tikzpicture}[
+    >=latex, 
+  ]
+  \begin{scope}[
+        node distance = 0cm
+    ]
+    \node[
+        rectangle, fill = gray!20!white,
+        minimum width = 3cm, minimum height = 2cm,
+    ] (body) {\(\vec{E}_p = \vec{0}\)};
+
+    \node[
+        draw, rectangle, thick, black, fill = red!50,
+        minimum width = 3cm, minimum height = 1mm,
+        above = of body
+    ] (pos) {};
+
+    \node[
+        draw, rectangle, thick, black, fill = blue!50,
+        minimum width = 3cm, minimum height = 1mm,
+        below = of body
+    ] (neg) {};
+
+    \draw[black, very thick, -Circle] (pos.east) to ++ (1,0) node (p) {};
+    \draw[black, very thick, -Circle] (neg.east) to ++ (1,0) node (n) {};
+
+    \draw[black, thick, ->] (p) to[out = -70, in = 70] node[midway, right] {\(U = 0\)} (n);
+  \end{scope}
+  \begin{scope}[
+        node distance = 0cm,
+        xshift = 7cm
+    ]
+    \node[
+        rectangle, fill = gray!20!white,
+        minimum width = 3cm, minimum height = 1.5cm,
+    ] (body) {\(\vec{E}_p \neq \vec{0}\)};
+
+    \node[
+        draw, rectangle, thick, black, fill = red!50,
+        minimum width = 3cm, minimum height = 1mm,
+        above = of body
+    ] (pos) {};
+
+    \node[
+        draw, rectangle, thick, black, fill = blue!50,
+        minimum width = 3cm, minimum height = 1mm,
+        below = of body
+    ] (neg) {};
+
+    \draw[orange, very thick, <-] (pos.north) to node[near end, right] {\(\vec{F}\)} ++(0,1);
+    \draw[orange, very thick, <-] (neg.south) to node[near end, right] {\(\vec{F}\)} ++(0,-1);
+
+    \draw[black, very thick, -Circle] (pos.east) to ++ (1,0) node (p) {};
+    \draw[black, very thick, -Circle] (neg.east) to ++ (1,0) node (n) {};
+
+    \draw[black, thick, ->] (p) to[out = -70, in = 70] node[midway, right] {\(U > 0\)} (n);
+  \end{scope}
+\end{tikzpicture}
+\end{document}