Image (IMAGE) World Scientific Caption Cu NWs are synthesized from Cu salts, capping agents and reductants. However, Cu is easily oxidized in air to form oxide layer, and there will be unreacted organic residues, which will greatly increase the resistance of NWs and therefore need to be removed. Annealing, organic acid cleaning and light treatment can remove the oxide layer and residual organic matter on the surface of Cu NWs to improve the conductivity of Cu NWs. Organic coatings, metal coatings and reduced graphene oxide coatings can block the contact between Cu NWs and air, thus significantly improving the oxidation resistance of Cu NWs and expanding the application scope of Cu NWs. Credit Jia Feng Chao et al. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.