^pMicro-Systems;
Laboratory,;
Electrical;
and;
Computer;
Engineering,;
Michigan;
State;
University,;
East;
Lansing;
MI;
48823,;
USA;
^pof;
Systems;
Engineering,;
University;
of;
Arkansas;
at;
Little;
Rock,;
Little;
Rock;
AR;
72204,;
USA;