  A new design of plasma source that merges the main features of capacitive
dielectric barrier discharge (DBD) and cold atmospheric plasma jet (CAPJ) is
discussed. The DBD system consists of a flexible, porous matrix consisting of
silica aerogel, which is comprised between two planar-parallel electrodes. The
supply of helium flow submitted to a sinusoidal voltage of 5-9 kV in amplitude
and 15 kHz in frequency provides a 2D-distribution of plasma jets that
propagate around 1 cm beyond the active DBD region. The plasma multi-jet system
is aimed at surface treatment of 3D objects and large areas. CAPJ performance
as a hypothetical morphing source in flat and bent configurations is discussed.
Optical emission spectroscopy (OES) diagnostics has provided the composition of
the CAPJ through the aerogel layer. This novel source is promising for
situations requiring thorough adaptation of plasma parameters to delicate
samples, as for example wound healing and treatment of surgical margins in
plasma-based cancer surgery.
