diff --git a/chapter-qkd/chapter.tex b/chapter-qkd/chapter.tex
index 7347c45..f9020df 100644
--- a/chapter-qkd/chapter.tex
+++ b/chapter-qkd/chapter.tex
@@ -965,7 +965,7 @@ feedthrough that improves on the simple helical feedthrough we introduced above.
 
 \begin{figure}
     \centering
-    \includegraphics[width=\textwidth]{schema_wire.eps}
+    \includegraphics[width=\textwidth]{schema_wire.pdf}
     \caption[Offset labyrinth mesh schema with fiber layout]{\figureattrib{schema_wire.svg}}
     \label{qkd_fig_offset_lab_fiber}
 \end{figure}
@@ -1050,13 +1050,13 @@ gears which need to constantly maintain an area of contact, both co-rotating and
 
 \begin{figure}
     \centering
-    \includegraphics[width=\textwidth]{gear_plan_1.eps}
+    \includegraphics[width=\textwidth]{gear_plan_1.pdf}
     \caption[Offset gear mesh assmbly schema]{\figureattrib{gear_plan_1.svg}}
 \end{figure}
 
 \begin{figure}
     \centering
-    \includegraphics[width=\textwidth]{gear_plan_2.eps}
+    \includegraphics[width=\textwidth]{gear_plan_2.pdf}
     \caption[Offset gear mesh schedule]{\figureattrib{gear_plan_2.svg}}
 \end{figure}
 
diff --git a/chapter-qkd/figures/gear_plan_1.pdf b/chapter-qkd/figures/gear_plan_1.pdf
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diff --git a/chapter-qkd/figures/gear_plan_2.pdf b/chapter-qkd/figures/gear_plan_2.pdf
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diff --git a/chapter-qkd/figures/gear_plan_3.pdf b/chapter-qkd/figures/gear_plan_3.pdf
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index 0000000..da79d41
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diff --git a/chapter-qkd/figures/schema_wire.pdf b/chapter-qkd/figures/schema_wire.pdf
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index 0000000..0f55188
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