Mid-Infrared studies of dusty sources in the Galactic Center
  Mid-Infrared (MIR) images of the Galactic center show extended gas and dust
features along with bright IRS sources. Some of these dust features are a part
of ionized clumpy streamers orbiting Sgr~A*, known as the mini-spiral. We
present their proper motions over 12 year time period and report their flux
densities in $N$-band filters {and derive their spectral indices}. The
observations were carried out by VISIR at ESO VLT. High-pass filtering led to
the detection of several resolved filaments and clumps along the mini-spiral.
Each source was fit by a 2-D Gaussian profile to determine the offsets and
aperture sizes. We perform aperture photometry to extract fluxes in two
different bands. We present the proper motions of the largest consistent set of
resolved and reliably determined sources. In addition to stellar orbital
motions, we identify a stream-like motion of extended clumps along the
mini-spiral. We also detect MIR counterparts of the radio tail components of
the IRS7 source. They show a clear kinematical deviation with respect to the
star. They likely represent Kelvin-Helmholtz instabilities formed downstream in
the shocked stellar wind. We also analyze the shape and the orientation of the
extended late-type IRS3 star that is consistent with the ALMA sub-mm detection
of the source. Its puffed-up envelope with the radius of $\sim 2\times
10^6\,R_{\odot}$ could be the result of the red-giant collision with a nuclear
jet, which was followed by the tidal prolongation along the orbit.
