Changing citation style using biber

Question

I have two problems regarding the citation style, see example.

1. At first, the citation should be without the title of the work for space sparing reasons.

2. Second, the volume.number (Month Year) notation should be replaced by a \bf{volume}, number (year) notation.

Here is the LaTeX code:

\documentclass[open=right,titlepage=on,headsepline=on,numbers=enddot,ngerman,12pt,draft]{scrbook}
\usepackage[ngerman]{babel}
\usepackage[citestyle=verbose-ibid,bibstyle=authortitle,labelyear=true,backend=biber,isbn=false,url=false,doi=false,eprint=false]{biblatex} 
\bibliography{mini}
\begin{document}
\footcite{sigmund_mechanism_1973}
\printbibliography
\end{document}

and this is the mini.bib file:

@article{sigmund_mechanism_1973,
    title = {A mechanism of surface micro-roughening by ion bombardment},
    volume = {8},
    issn = {0022-2461, 1573-4803},
    url = {http://link.springer.com/article/10.1007/BF00754888},
    doi = {10.1007/BF00754888},
    abstract = {},
    language = {en},
    number = {11},
    urldate = {2014-02-24},
    journal = {J Mater Sci},
    author = {Sigmund, Peter},
    month = nov,
    year = {1973},
    keywords = {Characterization and Evaluation Materials, Industrial {Chemistry/Chemical} Engineering, Mechanics, Polymer Sciences},
    pages = {1545--1553},
    file = {}
},

Answer 1

You could try these modifications to verbose-ibid

We use a comma for punctuation

\renewcommand*{\newunitpunct}{\addcomma\space}

The language list will not be displayed, we also drop the title in citations.

\AtEveryBibitem{\clearlist{language}}
\AtEveryCitekey{\clearlist{language}\clearfield{title}}

The volume is printed in bold

\DeclareFieldFormat[article]{volume}{\mkbibbold{#1}}

No "In:" ...

\renewbibmacro{in:}{}

There is a comma between volume and number in @articles

\renewbibmacro*{volume+number+eid}{%
  \printfield{volume}%
  \setunit{\addcomma\space}%
  \printfield{number}%
  \setunit{\addcomma\space}%
  \printfield{eid}}

There is no such thing as a short citation here, so we always either print the full thing or just ibid.

\renewbibmacro*{cite}{%
  \usebibmacro{cite:citepages}%
  \global\togglefalse{cbx:loccit}%
  \ifciteseen
    {\iffieldundef{shorthand}
       {\ifboolexpr{
          test {\ifciteibid}
      and
      not test {\iffirstonpage}
        }
          {\usebibmacro{cite:ibid}}
          {\usebibmacro{cite:full}}}
       {\usebibmacro{cite:shorthand}}}
    {\usebibmacro{cite:full}}}

MWE

\documentclass{article}
\usepackage[ngerman]{babel}
\usepackage[citestyle=verbose-ibid,bibstyle=authortitle,labelyear=true,backend=biber,isbn=false,url=false,doi=false,eprint=false]{biblatex} 
\usepackage{filecontents}
\begin{filecontents*}{\jobname.bib}
@article{sigmund_mechanism_1973,
    title = {A mechanism of surface micro-roughening by ion bombardment},
shorttitle = {hi},
    volume = {8},
    issn = {0022-2461, 1573-4803},
    url = {http://link.springer.com/article/10.1007/BF00754888},
    doi = {10.1007/BF00754888},
    language = {en},
    number = {11},
    urldate = {2014-02-24},
    journal = {J Mater Sci},
    author = {Sigmund, Peter},
    month = nov,
    year = {1973},
    keywords = {Characterization and Evaluation Materials, Industrial {Chemistry/Chemical} Engineering, Mechanics, Polymer Sciences},
    pages = {1545--1553},
}
\end{filecontents*}
\addbibresource{\jobname.bib}
\renewcommand*{\newunitpunct}{\addcomma\space}
\AtEveryBibitem{\clearlist{language}}
\AtEveryCitekey{\clearlist{language}\clearfield{title}}
\DeclareFieldFormat[article]{volume}{\mkbibbold{#1}}
\renewbibmacro{in:}{}
\renewbibmacro*{volume+number+eid}{%
  \printfield{volume}%
  \setunit{\addcomma\space}%
  \printfield{number}%
  \setunit{\addcomma\space}%
  \printfield{eid}}

\renewbibmacro*{cite}{%
  \usebibmacro{cite:citepages}%
  \global\togglefalse{cbx:loccit}%
  \ifciteseen
    {\iffieldundef{shorthand}
       {\ifboolexpr{
          test {\ifciteibid}
      and
      not test {\iffirstonpage}
        }
          {\usebibmacro{cite:ibid}}
          {\usebibmacro{cite:full}}}
       {\usebibmacro{cite:shorthand}}}
    {\usebibmacro{cite:full}}}

\begin{document}
  Lorem ipsum\footcite{sigmund_mechanism_1973}.
  \printbibliography
\end{document}