Page 1 of 32 57 58 59 60 1 12 17 23 1 2 3 4 5 6 7 ZnO Nanodisk based UV Detectors with Printed 8 9 10 11 Electrodes 13 14 15 16 Mohammad R. Alenezi, a,1 Abdullah S. Alshammari, b Talal H. Alzanki, a Peter Jarowski, c Simon 18 19 John Henley, c and S. Ravi P. Silva c,2 20 21 22 a. College of Technological Studies, PAAET, P.O. Box 42325 Shuwaikh, (Kuwait) 24 25 26 b. Department of Physics, College of Science, University of Hail, P.O. Box 2440, Hail, (KSA) 27 28 29 c. Nanoelectronics Center, Advanced Technology Institute, University of Surrey, Guildford, 30 31 32 GU2 7XH (UK) 33 34 35 36 37 38 E-mail : 39 40 1 mr.alene zi@paa et.ed u.k w 41 42 43 2 s.silva@surre y.ac. uk 44 45 46 Keywords : Nanostructures, ZnO, sensors, photodetector, nanodisks 47 48 49 Abstract: The fabrication of highly functional materials for practical devices requires a deep 50 51 understanding of the association between morphological and structural properties and 52 53 54 applications. Controlled hydroth erm al method to produce single crystal ZnO hexagonal 55 56 nanodisks, nanorings, and nanoroses using a mixed solution of zinc sulphate (ZnSO4) and