fancyhdrgraphicslogosmdpi
I tried following code but this code put logo on second page.
\documentclass[journal,article,submit,moreauthors,pdftex,10pt,a4paper]{mdpi}
\usepackage{fancyhdr}
\pagestyle{fancy}
\begin{document}
\lhead{\includegraphics[width = 0.3\textwidth]{nanomaterials-logo.png}}
\end{document}
These option clashes happen when a package is requested to be loaded on two different positions, like by you and inside another package, but with different options. The package is loaded by the first \usepackage (or its twin \RequirePackage); it isn't loaded again when it is requested again. It simply can't be loaded a second time. Therefore the new options can be activated and previous options might conflict with the second usage. So LaTeX creates an error to report this issue to you.
The way to fix this is to declare the options beforehand using \PassOptionsToPackage{<options>}{<package>}. Then they are used wherever the package is loaded.
\documentclass{article}
\usepackage{ifpdf}
\ifpdf
\PassOptionsToPackage{pdftex,usenames,dvipsnames}{color}
\usepackage[T1]{fontenc}
\usepackage{libertine} % most likely loads 'color' itself
%\usepackage{lmodern} % doesn't load 'color'
\usepackage{color}
\usepackage[pdftex]{graphicx}
\else
%\bye
\fi
\begin{document}
Hello, world!
\end{document}
I can't test it by myself, because I don't have the libertine package installed.
I don't think you need to set pdftex manually. Normally packages do a good job recognizing the driver by themselves. Also you might want to use the extended xcolor package instead of color.
You have to carefully adjust the dimensions of your image and the number of lines the wrap figure will extend ( for example [10] in \begin{wrapfigure}[10]{r}{5.5cm}).
An example:
\documentclass{article}
\usepackage{graphicx,wrapfig,lipsum}
%------------------------------------------
\begin{document}
This is where the table goes with text wrapping around it. You may
embed tabular environment inside wraptable environment and customize as you like.
%------------------------------------------
\begin{wrapfigure}[10]{r}{5.5cm}
\rule{5.5cm}{7.1cm}
\caption{A wrapped figure}\label{wrap-fig:1}
\end{wrapfigure}
%------------------------------------------
This is where the table goes with text wrapping around it. You may
embed tabular environment inside wraptable environment and customize as you like. This is where the table goes with text wrapping around it. You may
embed tabular environment inside wraptable environment and customize as you like. This is where the table goes with text wrapping around it.
%
\begin{figure}[h]
\begin{minipage}{6cm}
\centering
\rule{\textwidth}{3cm}
\caption{my figure}\label{fig:2}
\end{minipage}%
\end{figure}%
\lipsum[2-3]
Figure~\ref{wrap-fig:1} is a wrapped figure.
%------------------------------------------
\end{document}
Best Answer
To add the logo you need to change command
\@maketitlein the following part (see added code marked with<====):With the following complete MWE
you get the wished result:
Do you submit an article to that journal? Then I guess that they do not want you to change the layout. Please ask before submitting if you are allowed to change the layout!