4篇
您的检索式：作者名="Muhammad Tariq Saeed Chani"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Orange dye polyaniline composite based impedance humidity sensors显示文摘This study presents the fabrication and investigation of humidity sensors based on orange dye (OD) and polyaniline (PANI) composite films. A blend of 3 wt.% OD with 1 wt.% PANI was prepared in 1 ml water. The composite films were deposited on glass substrates between pre-deposited silver electrodes. The gap between the electrodes was 45 μm. The sensing mechanism was based on the impedance and capacitance variations due to the absorption/desorption of water vapor. It was observed that with the increase in relative humidity (RH) from 30% to 90%, the impedance decreases by 5.2 × 10 4 and 8.8 × 10 3 times for the frequencies of 120 Hz and 1 kHz, respectively. The impedance-humidity relationship showed a more uniform change compared to the capacitance-humidity relationship in the RH range of 30% to 90%. The consequence of annealing, measuring frequency, response and recovery time, and absorption-desorption behavior of the humidity sensor were also discussed in detail. The annealing resulted in an increase in sensitivity of up to 2.5 times, while the measured response time and recovery time were 34 s and 450 s, respectively. The impedance-humidity relationship was simulated. | Muhammad Tariq Saeed Chani Kh. S. Karimov F. A. Khalid S. Z. Abbas M. B. Bhatty | 2013 | Chinese Physics B2013，22，1： | 3 |
| 2 | Carbon nanotube cuprous oxide composite based pressure sensors显示文摘In this paper,we present the design,the fabrication,and the experimental results of carbon nanotube (CNT) and Cu 2 O composite based pressure sensors.The pressed tablets of the CNT-Cu 2 O composite are fabricated at a pressure of 353 MPa.The diameters of the multiwalled nanotubes (MWNTs) are between 10 nm and 30 nm.The sizes of the Cu 2 O micro particles are in the range of 3-4 μm.The average diameter and the average thickness of the pressed tablets are 10 mm and 4.0 mm,respectively.In order to make low resistance electric contacts,the two sides of the pressed tablet are covered by silver pastes.The direct current resistance of the pressure sensor decreases by 3.3 times as the pressure increases up to 37 kN/m 2.The simulation result of the resistance-pressure relationship is in good agreement with the experimental result within a variation of ±2%. | Kh.S.Karimov Muhammad Tariq Saeed Chani Fazal Ahmad Khalid Adam Khan Rahim Khan | 2012 | Chinese Physics B2012，21，1： | 1 |
| 3 | Synthesis of metal oxide composite nanosheets and their pressure sensing properties显示文摘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/m2;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(θ) on frequency and pressure have also been investigated. | Muhammad Tariq Saeed Chani Sher Bahadar Khan Kh.S.Karimov M.Abid Abdullah M.Asiri Kalsoom Akhtar | 2015 | Journal of Semiconductors2015，36，2： | 0 |
| 4 | Aluminium phthalocyanine chloride thin films for temperature sensing显示文摘This study presents the fabrication and temperature sensing properties of sensors based on aluminium phthalocyanine chloride(AlPcCl)thin films.To fabricate the sensors,50-nm-thick electrodes with 50-μm gaps between them are deposited on glass substrates.AlPcCl thin films with thickness of 50–100 nm are deposited in the gap between electrodes by thermal evaporation.The resistance of the sensors decreases with increasing thickness and the annealing at 100℃ results in an increase in the initial resistance of sensors up to 24%.The sensing mechanism is based on the change in resistance with temperature.For temperature varying from 25℃ to 80℃,the change in resistance is up to 60%.Simulation is carried out and results obtained coincide with experimental data with an error of±1%. | Muhammad Tariq Saeed Chani Abdullah M.Asiri Kh.S.Karimov Atif Khan Niaz Sher Bhadar Khan Khalid.A.Alamry | 2013 | Chinese Physics B2013，22，11： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员