A Microwave Ring Resonator Sensor for Early Detection of Breaches in Pipeline Coatings. - Mohammad Hossein Zarifi; Sameir Deif; Mohammad Abdolrazzaghi; Bertie Chen; Dennis Ramsawak; Michael Amyotte; Nahid Vahabisani; Zaher Hashisho; Weixing Chen; Mojgan Daneshmand (IEEE Trans. Ind. Electron., 2018)