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Razak A.R.A.,University Malaysia Perlis | Hashim U.,Institute of Nano Electronic Engineering INEE | Norlia M.I.,University Malaysia Perlis | Hasan S.,University Malaysia Perlis | Shukri F.R.,University Malaysia Perlis
Proceedings of the 2013 IEEE 7th International Power Engineering and Optimization Conference, PEOCO 2013 | Year: 2013

Compact fluorescent lamps are tested under DC operating conditions. Five random samples are evaluated in term of their starting and operation response compared to normal AC environment. Experiment result shows that DC line supply has successfully able to start and operate any conventional CFL at almost the same lux level and power consumption rate of 240ac rms. © 2013 IEEE. Source


Hashim U.,Institute of Nano Electronic Engineering INEE | Hashim U.,University Malaysia Perlis | Nadzirah S.,Institute of Nano Electronic Engineering INEE | Azizah N.,Institute of Nano Electronic Engineering INEE | And 2 more authors.
Proceedings - 2015 2nd International Conference on Biomedical Engineering, ICoBE 2015 | Year: 2015

This Detection of specific biomolecules increases interest in the development of biosensor especially for its applicability and complexity. Biomolecules and nanomaterials are the two issues that researchers used to improve electrical signal originating from biochemical reactions. Titanium dioxide nanoparticles (TiO2) on aluminium electrodes-based DNA biosensor were fabricated using conventional photolithography. This device rapidly response since the data comes out quantitatively In order to create a chemical reaction between DNA and the nanoparticles surface, a surface treatment process has been done namely silanization. APTES is used as a coupling agent of TiO2 towards DNA as DNA cannot be directly bonded with the TiO2 surface. Hence, surface modification using APTES diluted in different solvents for further DNA detection is studied. Only certain solvents are suitable to be diluted with APTES and able to generate conductivity. Hence, the conductivity was measured to identify the reaction between the APTES and TiO2 nanoparticles. APTES diluted in acetone gives unreadable conductivity. © 2015 IEEE. Source


Gan C.L.,Institute of Nano Electronic Engineering INEE | Hashim U.,Institute of Nano Electronic Engineering INEE
2015 10th International Microsystems, Packaging, Assembly and Circuits Technology Conference, IMPACT 2015 - Proceedings | Year: 2015

This paper compares and discusses the influence of shear strength {in terms of (SPMS) shear-per mils-square} of Au and Cu ball bonds on the biased humidity reliability performance in SOIC 8LD leaded package. Biased HAST (Highly Accelerated Temperature and Humidity Stress Test, 130°C, 85%RH) has been carried out to estimate the long term reliability of Au and Cu ball bonds. Lognormal reliability plots have been plotted for the three legs (Control, leg 1 and leg 2) whereby leg 2 is identified to have better mean-time-to-failure (t50) compared to other two legs. Open failure from biased HAST 96 hours, 192 hours are subjected for SEM cross-sectioning and found typical interfacial CuAl IMC (intermetallic compound) corrosion microcracking. HAST failure rates have been analyzed and the Cu ball bond lifetime has been established by using Peck model. The obtained Cu ball bond lifetime, of leg 2 is greater than 25 years and belongs to wearout reliability data point. This proves significant influence of SPMS on biased HAST failure rate. The higher the ball bond shear strength the lower the failure rate of biased HAST test. Hence, we should implement control on the average SPMS of ≥ 7.50 g/mil2. However, the minimum SPMS should have been controlled at minimum ≥ 6.5 g/mil2. © 2015 IEEE. Source


Hashim U.,Institute of Nano Electronic Engineering INEE | Hashim U.,University Malaysia Perlis | Azizah N.,Institute of Nano Electronic Engineering INEE | Nadzirah S.,Institute of Nano Electronic Engineering INEE | And 7 more authors.
Proceedings - 2015 2nd International Conference on Biomedical Engineering, ICoBE 2015 | Year: 2015

This research studies the detection of Human Papillomavirus (HPV) by using a colorimetric method for visualizing biotin-labelled DNA probes hybridized to DNA HPV on silicon dioxide (SiO2). In this study, SiO2 was used as substrate to check hybridization between HPV DNA probe and HPV DNA target. HPV is a virus that spreading by sexually transmitted that infected to human especially woman. High-risk HPV that stimulate cervical cancers (CC) is genotypes 16 and 18. Most 70% of CC are due to infection by these genotypes. The efficiency of colorimetric method depends mainly on the sequence of the specific oligonucleotide probe and the way they are attached to the support thin film. The conjugating procedure must be quick, strong by using covalent binding, and reproducible to show immobilization and hybridization process successful. The detection limit of target DNA has been estimated by using fluorescent detection. © 2015 IEEE. Source


Hashim U.,Institute of Nano Electronic Engineering INEE | Hashim U.,University Malaysia Perlis | Puah A.Y.P.,Institute of Nano Electronic Engineering INEE | Voon C.H.,Institute of Nano Electronic Engineering INEE | And 6 more authors.
Proceedings - 2015 2nd International Conference on Biomedical Engineering, ICoBE 2015 | Year: 2015

As technology advanced from bulky to the tremendous miniature feature size devices, the patterning process changes according to the technology in order to improving the quality of producing a tiny device. However, in research experiment, costing and ease of use is well preferred rather than high throughput outputs. Hence, such low cost photolithography technique which is a crucial part in fabrication process begins from mask design is introduced. A common mask printing on transparency film via inject printers comes in handy for low cost fabrication together with time saving and easy to generate. The only drawback is that printing dimension must not less than 100μm and definitely the bigger the size, the better the resolution of the transparency mask. On the other hand, the less devices that able to fit in a wafer. Design of this mask drawn using AutoCAD drawing tools using multiple trimmed circles that combined with a pair of contact pad. Tangible printed mask enable the next steps of photolithography to be proceed and patterns occurs upon completion. © 2015 IEEE. Source

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