Bacterial cellulose was successively functionalized by magnetron sputtering and RF reactive sputtering for the first time.
As-prepared BC/Cu/Al2O3 sandwich structure shows excellent electromagnetic interference (EMI) shielding effectiveness (SE).
The anti-oxidation of sandwich nanomaterials was exposed to hamper oxidation of Cu nanostructure layers.
This work demonstrates that BC is a promising substrate material in EMI field.