Dr. Ahmad Fairuz Omar Profile

Dr. Ahmad Fairuz Omar

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Publications (8)

SPIE Journal Paper | 6 June 2019

Spectral aging of gold and silver nanoparticles synthesized by laser ablation in liquids

Puteri Haslinda Megat Abdul Hedei, Saleh Alsaee, Ahmad Fairuz Omar, Uda Hashim, Noor Haida Mohd Kaus

JNP, Vol. 13, Issue 02, 020502, (June 2019) https://doi.org/10.1117/12.10.1117/1.JNP.13.020502

KEYWORDS: Nanoparticles, Particles, Bioalcohols, Liquids, Metals, Gold, Laser ablation, Absorbance, Silver, Transmission electron microscopy

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SPIE Journal Paper | 14 February 2019

Ce-doped YAG phosphor powder synthesized via microwave combustion and its application for white LED

Husnen Abd, Zainuriah Hassan, Naser Ahmed, Forat Alsultany, Ahmad Fairuz Omar

OE, Vol. 58, Issue 02, 027110, (February 2019) https://doi.org/10.1117/12.10.1117/1.OE.58.2.027110

KEYWORDS: YAG lasers, Cerium, Particles, Light emitting diodes, Combustion, Microwave radiation, Electroluminescence, Crystals, Coating, Aluminum

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Proceedings Article | 17 May 2018 Paper

The performance and stability of titanium dioxide and ethylhexyl methoxycinnamate as sunscreen filter: a comparison study

C.H. Tan, M.Z. MatJafri, A. Omar, W. Maryam

Proceedings Volume 10685, 1068548 (2018) https://doi.org/10.1117/12.2307337

KEYWORDS: Ultraviolet radiation, Transmittance, Titanium dioxide, Skin, Spectroscopy, Ultraviolet sources, Sun, Optical filters, Skin cancer

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Proceedings Article | 29 September 2017 Presentation + Paper

Characterizing the discoloration of EBT3 films in solar UV A+B measurement using red LED

Ahmad Fairuz Omar, Ummi Shuhada Osman, Kok Chooi Tan

Proceedings Volume 10425, 1042505 (2017) https://doi.org/10.1117/12.2278160

KEYWORDS: Ultraviolet radiation, Absorbance, Light emitting diodes, Spectroscopy, Photodiodes, Visible radiation, Absorption spectroscopy, Light sources, Spectroscopes, Sensors

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Proceedings Article | 26 June 2017 Paper

Measuring the volume of brain tumour and determining its location in T2-weighted MRI images using hidden Markov random field: expectation maximization algorithm

Mohd. Zubir Mat Jafri, Hayder Saad Abdulbaqi, Kussay Mutter, Iskandar Shahrim Mustapha, Ahmad Fairuz Omar

Proceedings Volume 10335, 103351V (2017) https://doi.org/10.1117/12.2270132

KEYWORDS: Tumors, Image processing algorithms and systems, Binary data, Medical imaging, Brain, Magnetic resonance imaging, Neuroimaging, Expectation maximization algorithms, Optical signal processing, Image classification, Image segmentation, Image acquisition

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Proceedings Article | 29 April 2016 Paper

The influence of additional water content towards the spectroscopy and physicochemical properties of genus Apis and stingless bee honey

Ahmad Fairuz Omar, Ommi Kalsom Mardziah Yahaya, Kok Chooi Tan, Mohd Hafiz Mail, Azman Seeni

Proceedings Volume 9899, 98990Y (2016) https://doi.org/10.1117/12.2227060

KEYWORDS: Near infrared, Absorbance, Water, Near infrared spectroscopy, Spectroscopy, Spectroscopes, Ocean optics, Optical sensing, Spectroscopy, Near infrared, Solids, Visible radiation, Absorption spectroscopy, UV-Vis spectroscopy, Statistical analysis

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SPIE Journal Paper | 22 June 2015

Simplified optical fiber RGB system in evaluating intrinsic quality of Sala mango

Ommi Kalsom Yahaya, Mohamad Zubir Mat Jafri, Azlan Abdul Aziz, Ahmad Fairuz Omar

OE, Vol. 54, Issue 06, 067108, (June 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.6.067108

KEYWORDS: Light emitting diodes, Spectrometers, RGB color model, Optical fibers, Visible radiation, Light sources, Sensors, Nondestructive evaluation, Reflectivity, Fiber optics sensors

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Proceedings Article | 8 May 2014 Paper

Development of optical near-infrared spectroscopy instruments for human skin sebum measurement

A. Msabbri, M. Mohamad, M. MatJafri, A. Omar

Proceedings Volume 9129, 91293M (2014) https://doi.org/10.1117/12.2052809

KEYWORDS: Skin, Spectroscopy, Spectroscopes, Absorption, Sensors, Absorbance, Reflectivity, Optical fibers, Near infrared spectroscopy, Near infrared

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Showing 5 of 8 publications

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