Bipolar Cu/HfO2/p++ Si Memristors by Sol-Gel Spin Coating Method and Their Application to Environmental Sensing. - Abdul Hadi, Sabina; Humood, Khaled M.; Abi Jaoude, Maguy; Abunahla, Heba; Shehhi, Hamda Faisal Al; Mohammad, Baker (Scientific Reports, 2019)