The inhibition of biodegradation on building limestone by plasma etching
The article discusses the use of low-pressure plasma etching to inhibit biodegradation on building limestone surfaces. The study aimed to investigate the effectiveness of plasma etching in removing microbials from bio-deteriorated limestone surfaces in monuments and buildings to provide conservators with a viable preservation solution. The research was conducted at the Batalha Monastery in Portugal, a UNESCO World Heritage site suffering from severe biodeterioration due to lichenous crusts and microorganism biofilms. The plasma etching process involved treating stone tablets with various parameters of coupled-capacitive plasma to assess the cleaning results.