TY - JOUR
T1 - Fabrication and characterization of size-selected Cu nanoclusters using a magnetron sputtering source
AU - Said, Khadija
AU - Qamhieh, Naser
AU - Awwad, Falah
AU - Ayesh, Ahmad I.
N1 - Funding Information:
The authors would like to acknowledge the financial support by United Arab Emirates University with Fund number 31R006 . Ms. Khadija Said is a Research Assistant, in Electrical Engineering Department, United Arab Emirates University, Al Ain, United Arab Emirates. Ms. Khadija Said has received her Bachelor and Master Degree in Physics in United Arab Emirates University. Her Master Thesis was on Fabrication and characterization of graphite oxide based field effect transistors for glucose-sensor applications. She has three published papers. Her current research is focused on Glucose, Mercury, and gas sensors by using nanotechnology. In 2010, she was an Associated Member of the Personnel of the European Organization for Nuclear Research in CERN, Geneva, Switzerland. Naser N. Qamhieh Prof. Naser N. Qamhieh received his Ph.D. in Physics in 1996 from the University of Leuven (Belgium) where he worked with professor Guy Adriaenssens. He joined the Department of Physics at United Arab Emirates University (UAEU) in 1999 where he is presently a full professor. His research interest centers on experimental study of the electronic properties and density of states of amorphous semiconductors and chalcogenide glasses. Among materials of interest are phase change materials used in memory devices. His research also involves fabrication and characterization thin films and nanoclusters by the existing techniques in UAEU labs. He published over 50 research articles in refereed international journals and conferences. He was honored a Research Project Award by the Research Affairs at UAE University in 2009. Moreover, he has a rich experience in teaching and developing general physics courses in UAEU. He is dedicated to enhance students’ learning, and conducted several educational studies based on teaching innovations for introductory physics courses. He had several contributions to pedagogical journals and conferences. For research in pedagogy he was honored the 2009–2010 Faculty of Science Recognition Award for Excellence in Teaching and Learning. Falah Awwad Dr. Falah Awwad received the M.A.Sc. and Ph.D. degrees in Electrical and Computer Engineering from Concordia University (Montreal, QC, Canada) in 2002 and 2006, respectively. He was a Post-Doctoral Fellow at Ecole Polytechnique de Montréal and Concordia University, Montreal, QC, Canada. Between August 2007 and Feb. 2013, he was an Assistant Professor with the College of Information Technology (CIT) at United Arab Emirates University. Currently, he is an Associate Professor with the Department of Electrical Engineering – College of Engineering (UAE University). He published over 50 research articles in refereed international journals and conferences. He is a member of the editorial Board of Journal of “Nanomaterials & Molecular Nanotechnology” and “Austin Journal of Nanomedicine & Nanotechnology”. He is the recipient of the CIT Faculty Outstanding Service Award. The evaluation was done based on his professional and community service during the period 2009–2012. His scientific research interests are VLSI circuits & systems, sensors, nanodevices, and biomedical imaging systems. Ahmad I. Ayesh Dr. Ayesh received his PhD in Physics (Nanotechnology) in 2007 from Physics and Astronomy Department, University of Canterbury, Christchurch - New Zealand. His PhD thesis title is “Device fabrication using Bi nanoclusters”. Currently, he is an associate professor with the Department of Mathematics, Statistics and Physics, Qatar University, Doha, Qatar. Dr. Ayesh is the leader of Nanocluster Devices research group, and he is an active scholar in interdisciplinary research that involves design of materials and their applications. His publication record includes about 70 publications and several international patents. He is the principle investigator of several running projects, and a supervisor of many PhD and MSC candidates. Dr. Ayesh is expert in device fabrication, nanomaterial synthesis, and characterization. He is expert in the nano- and micro- device fabrication using both the top-down and bottom-up approaches as well as the self-assembly of the nanostructure within the device. Furthermore, he is expert in nanocluster fabrication using physical methods. He has intensive experience in studying the carrier transport, morphology, nanocluster-nanocluster interaction, and nanocluster-surface interaction for the fabricated devices using different techniques such as: imaging, and TEM imaging.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/7/1
Y1 - 2018/7/1
N2 - Copper nanoclusters are used widely in applications such as glucose and gas sensors. A physical method is used to produce copper nanoclusters utilizing an ultra-high vacuum (UHV) system. Using a quadrupole mass filter (QMF), the size distribution of the nanoclusters is determined. It is found that varying the source parameters controls the size of the produced Cu nanoclusters. Increasing the aggregation length increases the nanocluster size. Varying the inert gas flow rate has a minor effect on the size at low aggregation length. On the other hand, at high aggregation length the size increases with increasing the gas flow. The results are interpreted in terms of the nucleation time and a two-body collision model between nanoclusters. Moreover, the band gap is measured for different sizes of CuO nanoclusters.
AB - Copper nanoclusters are used widely in applications such as glucose and gas sensors. A physical method is used to produce copper nanoclusters utilizing an ultra-high vacuum (UHV) system. Using a quadrupole mass filter (QMF), the size distribution of the nanoclusters is determined. It is found that varying the source parameters controls the size of the produced Cu nanoclusters. Increasing the aggregation length increases the nanocluster size. Varying the inert gas flow rate has a minor effect on the size at low aggregation length. On the other hand, at high aggregation length the size increases with increasing the gas flow. The results are interpreted in terms of the nucleation time and a two-body collision model between nanoclusters. Moreover, the band gap is measured for different sizes of CuO nanoclusters.
KW - Copper nanocluster
KW - Optical gap
KW - Two-body collision
KW - Ultra high vacuum system
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U2 - 10.1016/j.sna.2018.03.028
DO - 10.1016/j.sna.2018.03.028
M3 - Article
AN - SCOPUS:85046822953
SN - 0924-4247
VL - 277
SP - 112
EP - 116
JO - Sensors and Actuators, A: Physical
JF - Sensors and Actuators, A: Physical
ER -