Effect of Ar microplasma irradiation on surface, structural and field emission properties of brass Asad Ali, Mahreen Akram, Shazia Bashir, Khaliq Mahmood, Shahzad Naseem, Saqib Jamil, Aiman Saif Ullah, Abdul Wahid, Rana Muhammad Ayub and Shoaib Akmal Eur. Phys. J. D, 79 3 (2025) 21 Published online: 25 March 2025 DOI: 10.1140/epjd/s10053-025-00973-4