Putting two-column wide figure in Revtex4-1

I have a problem with APS’s revtex4-1.
I want to place an twocolumn-wide figure at the bottom of the page.
I know

begin{figure*}[position]
picture
end{figure*}

in {article} document class
[position] can be htb! , and I have no problem in {article} in placing pictures on here, top, and bottom.

But!!

in {revtex4-1} document class
[position] is not working! only for t. If I use b, the picture appears on the next page, and it takes up all paper. I want it to be bottom.

I tried usepackage{dblfloatfix} but it does not work in revtex4-1 and makes error with equation, and so on..(I see revtex4-1 is incompatible with dblfloatfix.)

The following URL is for article class, I have no problem to follow its instruction.

Displaying a wide figure in a two-column document

Please, Help!

This is my sample code, I manage to put long table at the position where I wanted, but long figure is not!

Thanks,

documentclass[
showkeys,reprint,
%superscriptaddress,
%groupedaddress,
%unsortedaddress,
%runinaddress,
%frontmatterverbose,
%preprint,
%showpacs,preprintnumbers,
%nofootinbib,
%nobibnotes,
%bibnotes,
 amsmath,amssymb,
 aps,
%pra,
%prb,
%rmp,
%prstab,
%prstper,
floatfix,
]{revtex4-1}

usepackage[demo]{graphicx}% Include figure files
usepackage{dcolumn}% Align table columns on decimal point
usepackage{bm}% bold math


%]{geometry}
usepackage{amsmath,amssymb,amsfonts}
usepackage{fancyhdr}
usepackage{lipsum}% just to generate text for the example
usepackage{subcaption}
usepackage{multirow}
pagestyle{fancy}
fancyhf{}      
fancyhead{nouppercaseleftmark}
fancyhead[R]{thepage}
fancyhead[C]{}





begin{document}

preprint{APS/123-QED}

title{
%begin{minipage}{14cm}
Microscopic Images and Micro Vickers Hardness Test of
Fullly Pearlitic High-Carbon Steel Specimens
%end{minipage}
}
author{ABCD}
email{ABCD}
collaboration{ABCD}
date{today}

begin{abstract}
begin{center}
{bfseries Abstract}
end{center}
lipsum[1]
end{abstract}
keywords{lipsum[1]}

maketitle
%tableofcontents
section{Introduction}
lipsum[1-4]

begin{table*}[t]
centering
begin{tabular}{|r|r|r|r|r|r|r|r|r|r|r|}
long&long&long&long&long&long&long&long&long&long&long
end{tabular}
end{table*}

begin{figure*}[b]
                includegraphics[width=.4linewidth]{tiger}
                %linewidth or textwidth
                caption{A gull}
                label{fig:gull}
end{figure*}

section{Experiment}
lipsum[1-10]

end{document}
%
% ****** End of file apssamp.tex ******

documentclass[twocolumn,...]{revtex4-1}
begin{document}
...
onecolumngrid

begin{figure}[h] 
includegraphics{example.eps}
end{figure}    
twocolumngrid
...

This is a sentence. This is a sentence. This is [CUT HERE]
onecolumngrid
begin{center}
begin{figure}[h]
includegraphics[scale=1.0]{myfig.pdf}
caption{mycaption}
end{figure}
end{center}
twocolumngrid
[CUT HERE] a sentence, This is a sentence....

begin{widetext}
    begin{minipage}{linewidth}
        begin{figure}[H]
            centering
            includegraphics[width=linewidth]{sample.png}
            label{fig:sample}
        end{figure}    
    end{minipage}
end{widetext}