Synthesis of metal oxide composite nanosheets and their pressure sensing properties

作     者：Muhammad Tariq Saeed Chani Sher Bahadar Khan Kh.S.Karimov M.Abid Abdullah M.Asiri Kalsoom Akhtar 

作者机构：Center of Excellence for Advanced Materials Research (CEAMR) King Abdulaziz University Chemistry Department Faculty of Science King Abdulaziz University Interdisciplinary Research Center COMSATS Institute of Information Technology Physical Technical Institute of Academy of Sciences Division of Nano Sciences and Department of Chemistry Ewha Womans University 

出 版 物：《Journal of Semiconductors》 (半导体学报（英文版）)

年 卷 期：2015年第36卷第2期

页      面：18-23页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：Project supported by King Abdulaziz University(No.T-001/431) the technical and financial support of KAU 

主　　题：nanostructures oxides chemical synthesis optical properties electron microscopy 

摘      要：This study presents the synthesis of metal oxides composite nanosheets （oxides of cobalt, zinc and iron） and their pressure sensing properties. A transducer has been fabricated to directly measure the resistance- pressure and impedance-pressure relationships of pristine nanopowder. At the initial stage, a nanopowder sample of 10 mm diameter and 1 mm height was placed in the transducer and by applying pressure of up to 8.15 kN/m^2; the DC resistance and the impedance are reduced by 44% on average. It can be explained by the densification of the samples and a decrease in porosity due to the effect of pressure. It was also observed that the DC resistance increases with time and saturated within 8 min. It is considered that this phenomenon is based on the effect of displacement currents of bound charges. The dependences of the impedance phase （8） on frequency and pressure have also been investigated.