Mohd Adzir Mahdi

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Laser ablation of a silver plate immersed in virgin coconut oil was carried out for fabrication of silver nanoparticles. A Nd:YAG laser at wavelengths of 1064 nm was used for ablation of the plate at different times. The virgin coconut oil allowed formation of nanoparticles with well-dispersed, uniform particle diameters that were stable for a reasonable(More)
In this study we used a laser ablation technique for preparation of silver nanoparticles. The fabrication process was carried out by ablation of a silver plate immersed in palm oil. A pulsed Nd:YAG laser at a wavelength of 1064 nm was used for ablation of the plate at different times. The palm coconut oil allowed formation of nanoparticles with very small(More)
Silver nanoparticles were fabricated by ablation of a pure silver plate immersed in castor oil. A Nd:YAG-pulsed Q-switch laser with 1064-nm wavelength and 10-Hz frequency was used to ablate the plate for 10 minutes. The sample was characterized by ultraviolet-visible, atomic absorption, Fourier transform-infrared spectroscopies, and transmission electron(More)
—This paper proposes miniature radio frequency identification (RFID) tag antenna designed to operate on metallic objects, in the UHF frequency range (915 MHz), without significantly degrading its read range. The antenna structure is composed of two parts: Part 1 comprises two square patches electrically connected to the ground plane through vias while Part(More)
This paper proposes miniature radio frequency identification (RFID) tag antenna designed to operate on metallic objects, in the UHF frequency range (915 MHz). The antenna structure is comprised of two parts: Part 1 with two layers; a top layer of two square fractal patches electrically connected to the ground plane (bottom layer) through vias while Part 2(More)
This paper presents new open source computer based simulator for the implementation of single stage Erbium-Doped Fiber Amplifier (EDFA) such as single pass (SP), double pass (DP) and triple pass (TP) EDFA. In this software it is possible to manipulate the design parameters such as pump power, pump wavelength, signal power, signal wavelength, fiber length,(More)
The placement of Chirped Fiber Bragg grating in between the span plays an important role as it affects the signal quality when it reaches the transmission end. The work highlights on the signal performance at 10 Gbps data rate after propagating through a 90 km transmission fiber. The worst BER is obtained in the inline compensation configuration as compared(More)