School of Microelectronic Engineering (Articles)
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/2429
2024-03-28T22:28:24ZZnO photoanode effect on the efficiency performance of organic based dye sensitized solar cell
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/74603
ZnO photoanode effect on the efficiency performance of organic based dye sensitized solar cell
Ili Salwani, Mohamad; S S, Ismail; Mohd Natashah, Norizan; Sohiful Anuar, Zainol Murad; Mohd Mustafa Al Bakri, Abdullah
Dye sensitized solar cell has been emerged as one of the most promising candidates for photovoltaics applications in good quality of their low manufacturing cost and impressive conversion energy. Titanium dioxide (TiO₂) which is used as photoanode in the market has the advantage of wide bandgap energy but low in electron mobility (~10 cm² /(V.s)). Ruthenium in the other hand, as the dye sensitizer is a rare noble metal and harmful to human health. Thus, this article reveals the performance of photo-to-electric conversion efficiency with the usage of Zinc Oxide as photoanode with higher electron mobility (155 cm² /(V.s)) compared to TiO₂ utilizing three natural fruit dyes of Prunus domestica, Magnifera indica and Citrus limon. ZnO and TiO₂ photoanodes were fabricated using sol gel and dr blade method respectively. The morphology of the photoanodes were characterized using Scanning Electron Microscope and the efficiency of the complete DSSC with all different fruit dyes were characterized using
Semiconductor Parametric Analyzer. The different property of electron mobility photoanodes effect in DSSC proved to give better performance with the photoconversion efficiency of 3.082% using ZnO with Prunus domestica dye. This article also reveals that pH indicator does not affect the selection and the performance of DSSC
Link to publisher's homepage at https://iopscience.iop.org/
2017-06-01T00:00:00ZSmart Rash Driver System via Internet of Things (IoT)
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/69243
Smart Rash Driver System via Internet of Things (IoT)
Kong, Sheau Tong; Mohd Natashah, Norizan; Ili Salwani, Mohamad
Nearly half a million accidents on Malaysians road occur in 2015. The aim of this research is to detect car speed, capture the photo of the speeding car and then transfer the data like car speed, date and time, location and lane number to an online database. A distance sensor is used to measure the distance range between two points on the road. The ESP8266 NodeMCU will be the control unit to process the data and calculate the speed with the formula of speed equal to distance over time. The ESP8266 NodeMCU is also a Wi-Fi module to help in transferring data via IoT to an online database. The Google spreadsheet acted as an online database and will receive all the data if detected a speeding car. In conclusion, the Smart Rash Driver System is successfully invented and able to detect vehicle speed, capture the photo of over speed vehicle and save it to the SD card and lastly transfer all data via IoT to the Google Spreadsheet. This invention will be able to help to decrease the road accident rate efficiently.
Link to publisher's homepage at https://www.matec-conferences.org/
2017-01-01T00:00:00ZHigh performance systolic array core architecture design for DNA sequencer
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/69198
High performance systolic array core architecture design for DNA sequencer
Dayana, Saiful Nurdin; Mohd. Nazrin, Md. Isa; Rizalafande, Che Ismail; Muhammad Imran, Ahmad
This paper presents a high performance systolic array (SA) core architecture design for Deoxyribonucleic Acid (DNA) sequencer. The core implements the affine gap penalty score Smith-Waterman (SW) algorithm. This time-consuming local alignment algorithm guarantees optimal alignment between DNA sequences, but it requires quadratic computation time when performed on standard desktop computers. The use of linear SA decreases the time complexity from quadratic to linear. In addition, with the exponential growth of DNA databases, the SA architecture is used to overcome the timing issue. In this work, the SW algorithm has been captured using Verilog Hardware Description Language (HDL) and simulated using Xilinx ISIM simulator. The proposed design has been implemented in Xilinx Virtex -6 Field Programmable Gate Array (FPGA) and improved in the core area by 90% reduction.
Link to publisher's homepage at https://www.matec-conferences.org/
2018-01-01T00:00:00ZDesign and Analysis of XOR Logic Gate Based on Two-Photon Absorption
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/68617
Design and Analysis of XOR Logic Gate Based on Two-Photon Absorption
Nazir, N.S.; Wahid, M.H.A.; Hambali, N.A.M.A.; Shahimin, M.M.; Khairuddin, N.Z.; Hasanuddin, N.H.; Ramli, M. M.
Two-photon absorption with high intensity pump beam occurs in a SOA depends on fast phase change of a weak probe signal. This work analysed optical XOR logic function using two-photon absorption induced fast phase change. A rate equation for SOA and both input data signals A and B with high intensity, configured in the form of MZI has also been proved. The model shows that XOR operation at 10 Gb/s with good signal to noise ratio is obtained with high input intensities. The result on the generation of XOR indicates that operations on 10 Gb/s with a high signal to noise ratio can easily be implemented. The average input power into the SOA is 20 dbm corresponding to the peak power of 5.5 dBm at 10 Gb/s when the width of the input pulse 3.6 ps. The short narrow pulse width is utilised in the study for stronger effect of two-photon absorption.
Link to publisher's homepage at https://www.matec-conferences.org/
2016-01-01T00:00:00Z