A5058645097- Photonic and Optical Devices
- Advanced Fiber Optic Sensors
- Optical Coherence Tomography Applications
- Semiconductor Lasers and Optical Devices
- Photoacoustic and Ultrasonic Imaging
- Advanced Fluorescence Microscopy Techniques
- Advanced Fiber Laser Technologies
- COVID-19 diagnosis using AI
- SARS-CoV-2 detection and testing
- SARS-CoV-2 and COVID-19 Research
- Advanced Photonic Communication Systems
- Optical Network Technologies
- Quantum Information and Cryptography
- Biosensors and Analytical Detection
- Advanced Nanomaterials in Catalysis
- Quantum optics and atomic interactions
- Optical measurement and interference techniques
- Direction-of-Arrival Estimation Techniques
- Education and Islamic Studies
- Carbon and Quantum Dots Applications
- Advanced biosensing and bioanalysis techniques
- Laser Applications in Dentistry and Medicine
- Analytical Chemistry and Sensors
- Antenna Design and Optimization
- Orthodontics and Dentofacial Orthopedics
National University of Malaysia
2013-2025
ORCID
2019
Imperial College London
2014-2015
MIMOS (Malaysia)
2010
Military Technical College
2002
Antimicrobial resistance (AMR) poses a critical global One Health concern, ensuing from unintentional and continuous exposure to antibiotics, as well challenges in accurate contagion diagnostics. Addressing AMR requires strategic approach that emphasizes early stage prevention through screening clinical, environmental, farming, livestock settings identify nonvulnerable antimicrobial agents the associated genes. Conventional diagnostics, like antibiotic susceptibility testing, possess...
Worldwide, SARS-CoV-2 has been responsible for millions of fatalities and extensive disability. Hence, to stop the spread novel viruses like SARS-CoV-2, Omicron, other worrying types, rapid accurate diagnostic techniques are needed identify symptomatic asymptomatic carriers as soon feasible. Early recognition diagnosis essential effective epidemic management. However, different viral strains' shapes spatial characteristics similar, complicating image classification, especially in medical...
Background and objective Catheter-associated urinary tract infection (CAUTI) accounts for 9% of all hospital-acquired infections (HAI). This study aimed to assess the incidence CAUTI among patients with two different types catheters: latex catheter latex-coated metal alloy catheter, used in ICU setting. Methods was a randomized, prospective, single-blinded involving 76 requiring catheterization admitted more than 48 hours. Patients were allocated group group, randomization ratio 1:1....
Orthodontic clear aligners, along with their attachments, are used for the corrective alignment of teeth during orthodontic treatment. Although aligner technique has gained widespread popularity due to its aesthetic quality, studies that examine and map measurement forces applied attachments lacking. This investigation describes topographical visualisation force in attachments. We describe a method using Prescale® pressure film an image processing obtain aligner’s distributed on attachment...
This research demonstrates a one-step modification process of biopolymer carrageenan active sites through functional group substitution in κ-carrageenan structures. The improves the electronegative properties derivatives, leading to enhancement material’s performance. Synthesized succinyl with high degree provides more for interaction analytes. FTIR analysis showed presence new peaks at 1068 cm−1, 1218 and 1626 cm−1 that corresponded vibrations C–O C=O from carbonyl group. A peak 2.86 ppm 1H...
This paper experimentally demonstrates the feasibility of improving sensing performance fiber Bragg grating (FBG)-based point sensors by deploying two pulse coding techniques, simplex (SSC), and Golay complementary codes (GCC). The techniques are separately combined with conventional time-domain multiplexed FBG (TDM-FBG) interrogation sensor, their results compared respect to single technique. Consistently theory, for both we have confirmed that signal-to-noise ratio improved proportionally...
A label-free detection for dissolved carbon dioxide (dCO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) is developed using a tapered optical fiber sensor. The region of the coated with zinc oxide (ZnO) nanorice and used as probe dCO sensing. sensor was exposed to different concentrations solution ranging from 10 100 ppm. ZnO can adsorb via strong hydrogen bonding due presence plenty oxygen atoms on its surface layer. interaction...
Carbon dots (CDs)-based fluorescence imaging with confocal reflectance effectively localises labelled structures clear sample visualization. Yet, integrating these modalities into single-fibre cantilever-based endoscopic scanners poses challenges. Thus, we present an scanner a mixed-mode fibre cantilever for dual imaging. The features two-attached construction multiple illumination and detection channels without additional optical components. measured lateral axial resolutions are 5.81 6.52...
The addition of an apertured mirror before the imaging lens is proposed as a method providing feedback in single-axis resonant fibre scanner.Reflection at scan extremities generates timing signals interlaced with back-scattered data, and phase locked loop proportional controller then adjust drive frequency amplitude.The capture range stability system are examined.Verification obtained using confocal scanner based on mechanically biaxial fibre.
The introduction of auxiliaries such as composite attachment has improved the force delivery clear aligner (CA) therapy. However, placement may give rise to a flash, defined excess resin around which affect CA delivery. This in vitro study aims determine differences generated by presence or absence flash CA.
We report on the experimental results of combination unique auto-correlation properties Golay complementary code and Hadamard matrix standard simplex code. The two coding techniques in improvement signal-to-noise ratio (SNR) time domain multiplexed fiber Bragg grating (TDM-FBG) sensor for temperature measurement. Previously, we have analyzed both when deployed separately TDM-FBG sensor. In this case, result same amount SNR length longer than 31 bits. paper, demonstrate simultaneous...
This article describes the feasibility of signal generation by employing System on Chip (SoC) ZedBoard™ platform to produce intensity modulation in Time Division Multiplexing-fiber Bragg grating sensor. SoC has capability reduce complexity and increase flexibility design digital instruments. Experimental results show that system can regulate period Duty cycle for two output waveforms frequency. The employment TDM-FBG sensor provides overall performance enhancement over conventional single...
A two-axis optical imaging system using a Lissajous scan pattern with non-integer frequency ratio is presented. waveguide precisely tuned mechanical resonant frequencies constructed by dip coating two fibres transparent polymer. Motion achieved mounting cantilever at 45° on single piezoelectric actuator dual-frequency drive. Confocal signal collection mode-stripping detector, and feedback signals needed for phase locking are derived from intermittent reflection an apertured mirror. The first...
For almost a half-decade, the unique autocorrelation properties of Golay complementary pairs (GCP) have added significant value to key performance conventional time-domain multiplexed fiber Bragg grating sensors (TDM-FBGs). However, employment unipolar form coded TDM-FBG has suffered from several flaws, such as limited improvement signal-to-noise ratio (SNIR), noisy backgrounds, and distorted signals. Therefore, we propose experimentally implement digital filtering techniques mitigate...