A visualization of activated area on polymers is done with test ink to evaluate atmospheric pressure plasma jets (APPJ). The shrinkage characteristics of the test ink are collected using activation image recording (AIR).
A cold cold atmospheric pressure plasma is a partially ionized gas. The advantage of a cold atmospheric plasma is that it has room temperature and can be produced on earth at atmospheric pressure. A cold atmospheric plasma produces a reactive mix which very effectively destroys bacteria, fungi, viruses, spores or odour molecules.
The high temperatures which are reached in most plasma applications make many users wonder about process safety, especially when highly sensitive materials are treated. This article addresses open questions concerning temperature and heat conduction during plasma applications and cites critical examples which substantiate the suitability of plasma for temperature-critical processes.