This work reveals essential details of
plasma-surface interaction in atmospheric air that are important for a wide range
of applications, beginning from airflow control and up to the high-voltage
insulation. The paper discusses experimental data characterizing dynamics of
development and kinetics of energy coupling in surface dielectric barrier
discharge (SDBD), atmospheric air plasmas sustained over dielectric surfaces,
over a wide range of time scales. The experiments have been conducted using
microsecond pulse voltage waveform of single and alternating polarities.
Time-resolved discharge development and mechanisms of coupling with quiescent
air are analyzed using nanosecond gate camera imaging, electrical measurements,
and original surface charge sensors. The results demonstrate several new,
critically important processes overlooked in previous studies. Specifically, it
is shown that SDBD plasmas energy release may be significantly increased by
using an optimized waveform.
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