29 hasil untuk "Burhanuddin Yeop Majlis"

Exploiting the Oxygen Inhibitory Effect on UV Curing in Microfabrication: A Modified Lithography Technique

Jafar Alvankarian; Burhanuddin Yeop Majlis

PLOS ONE, Vol. 10 No. 3 · 2015 · Inggris · PLOS Scopus

Rapid prototyping (RP) of microfluidic channels in liquid photopolymers using standard lithography (SL) involves multiple deposition steps and curing by ultraviolet (UV) light for the construction of a microstructure layer. In this work, the conflicting effect of oxygen diffusion and UV curing of…

Juga tersedia di: DOAJ

Tunable Microfluidic Devices for Hydrodynamic Fractionation of Cells and Beads: A Review

Jafar Alvankarian; Burhanuddin Yeop Majlis

Sensors, Vol. 15 No. 11 · 2015 · Inggris · DOAJ Scopus

The adjustable microfluidic devices that have been developed for hydrodynamic-based fractionation of beads and cells are important for fast performance tunability through interaction of mechanical properties of particles in fluid flow and mechanically flexible microstructures. In this review, the…

VERTICALLY INTEGRATED OPTICAL TRANSDUCER FOR BIO-PARTICLE DETECTION

MARIANAH MASRIE; JUMRIL YUNAS; BURHANUDDIN YEOP MAJLIS dkk.

Journal of Engineering Science and Technology, Vol. 12 No. 7 · 2017 · Inggris · DOAJ Dikeluarkan Scopus 2026

An optical transducer with vertical structure integrated with MEMS microfluidic device is developed for the detection of bio-particle. The system consists of optical detection part; electronics control part and microfluidic part. Integrating of these parts, using optical transducer as a label-free…

Sputtered Encapsulation as Wafer Level Packaging for Isolatable MEMS Devices: A Technique Demonstrated on a Capacitive Accelerometer

Azrul Azlan Hamzah; Jumril Yunas; Ibrahim Ahmad dkk.

Sensors, Vol. 8 No. 11 · 2008 · Inggris · DOAJ Scopus

This paper discusses sputtered silicon encapsulation as a wafer level packaging approach for isolatable MEMS devices. Devices such as accelerometers, RF switches, inductors, and filters that do not require interaction with the surroundings to function, could thus be fully encapsulated at the wafer…

Increasing the Quality Factor (Q) of 1D Photonic Crystal Cavity with an End Loop-Mirror

Mohamad Hazwan Haron; Burhanuddin Yeop Majlis; Ahmad Rifqi Md Zain

Photonics, Vol. 8 No. 4 · 2021 · Inggris · DOAJ Scopus

Increasing the quality factor (Q-factor) of an optical resonator device has been a research focus utilized in various applications. Higher Q-factor means light is confined in a longer time which will produce a sharper peak and higher transmission. In this paper, we introduce a novel technique to…

Development and Characterization of Freestanding Poly (Methyl Methacrylate)/Monolayer Graphene Membrane

Badariah Bais; Norliana Yusof; Norhayati Soin dkk.

IEEE Access, Vol. 8 · 2020 · Inggris · DOAJ Scopus

Graphene-polymer based materials are gaining more popularity among researchers due to its mechanical properties that are found to be suitable to be used in various micro/nanoscale application requiring highly sensitive sensors. This research ventured into the fabrication and characterization…

Fabrication of Suspended PMMA-Graphene Membrane for High Sensitivity LC-MEMS Pressure Sensor

Norliana Yusof; Badariah Bais; Jumril Yunas dkk.

Membranes, Vol. 11 No. 12 · 2021 · Inggris · DOAJ Scopus

The LC-MEMS pressure sensor is an attractive option for an implantable sensor. It senses pressure wirelessly through an LC resonator, eliminating the requirement for electrical wiring or a battery system. However, the sensitivity of LC-MEMS pressure sensors is still comparatively low, especially in…

Dielectrophoresis Manipulation: Versatile Lateral and Vertical Mechanisms

Muhamad Ramdzan Buyong; Aminuddin Ahmad Kayani; Azrul Azlan Hamzah dkk.

Biosensors, Vol. 9 No. 1 · 2019 · Inggris · DOAJ Scopus

Discussing the topic of the capability of dielectrophoresis (DEP) devices in terms of the selective detection and rapid manipulation of particles based on the DEP force (FDEP) via contactless methods is challenging in medical research, drug discovery and delivery. Nonetheless, the process of the…

A Review of MEMS Capacitive Microphones

Siti Aisyah Zawawi; Azrul Azlan Hamzah; Burhanuddin Yeop Majlis dkk.

Micromachines, Vol. 11 No. 5 · 2020 · Inggris · DOAJ Scopus

This review collates around 100 papers that developed micro-electro-mechanical system (MEMS) capacitive microphones. As far as we know, this is the first comprehensive archive from academia on this versatile device from 1989 to 2019. These works are tabulated in term of intended application…

The Fabrication and Indentation of Cubic Silicon Carbide Diaphragm for Acoustic Sensing

Siti Aisyah Zawawi; Azrul Azlan Hamzah; Burhanuddin Yeop Majlis dkk.

Micromachines, Vol. 12 No. 9 · 2021 · Inggris · DOAJ Scopus

In this study, 550 nm thick cubic silicon carbide square diaphragms were back etched from Si substrate. Then, indentation was carried out to samples with varying dimensions, indentation locations, and loads. The influence of three parameters is documented by analyzing load-displacement curves. It…

The Design, Fabrication, and Testing of an Electromagnetic Micropump with a Matrix-Patterned Magnetic Polymer Composite Actuator Membrane

Muzalifah Mohd Said; Jumril Yunas; Badariah Bais dkk.

Micromachines, Vol. 9 No. 1 · 2017 · Inggris · DOAJ Scopus

A valveless electromagnetic (EM) micropump with a matrix-patterned magnetic polymer composite actuator membrane structure was successfully designed and fabricated. The composite membrane structure is made of polydemethylsiloxane (PDMS) that is mixed with magnetic particles and patterned in matrix…

Effect of Geometric Parameters on the Performance of P-Type Junctionless Lateral Gate Transistors

Farhad Larki; Arash Dehzangi; Sawal Hamid Md Ali dkk.

PLoS ONE, Vol. 9 No. 4 · 2014 · Inggris · PLOS Scopus

This paper examines the impact of two important geometrical parameters, namely the thickness and source/drain extensions on the performance of low doped p-type double lateral gate junctionless transistors (DGJLTs). The three dimensional Technology Computer-Aided Design simulation is implemented to…

Urea and creatinine detection on nano-laminated gold thin film using Kretschmann-based surface plasmon resonance biosensor

P. Susthitha Menon; Fairus Atida Said; Gan Siew Mei dkk.

PLOS ONE, Vol. 13 No. 7 · 2018 · Inggris · PLOS Scopus

This work investigates the surface plasmon resonance (SPR) response of 50-nm thick nano-laminated gold film using Kretschmann-based biosensing for detection of urea and creatinine in solution of various concentrations (non-enzymatic samples). Comparison was made with the presence of urease and…

Ultrasensitive and Highly Selective Graphene-Based Field-Effect Transistor Biosensor for Anti-Diuretic Hormone Detection

Reena Sri Selvarajan; Ruslinda A. Rahim; Burhanuddin Yeop Majlis dkk.

Sensors, Vol. 20 No. 9 · 2020 · Inggris · DOAJ Scopus

Nephrogenic diabetes insipidus (NDI), which can be congenital or acquired, results from the failure of the kidney to respond to the anti-diuretic hormone (ADH). This will lead to excessive water loss from the body in the form of urine. The kidney, therefore, has a crucial role in maintaining water…

A Tapered Aluminium Microelectrode Array for Improvement of Dielectrophoresis-Based Particle Manipulation

Muhamad Ramdzan Buyong; Farhad Larki; Mohd Syafiq Faiz dkk.

Sensors, Vol. 15 No. 5 · 2015 · Inggris · DOAJ Scopus

In this work, the dielectrophoretic force (FDEP) response of Aluminium Microelectrode Arrays with tapered profile is investigated through experimental measurements and numerical simulations. A standard CMOS processing technique with a step for the formation of a tapered profile resist is…

A Theoretical Study of Surface Mode Propagation with a Guiding Layer of GaN/Sapphire Hetero-Structure in Liquid Medium

M. F. Mohd Razip Wee; Muhammad Musoddiq Jaafar; Mohd Syafiq Faiz dkk.

Biosensors, Vol. 8 No. 4 · 2018 · Inggris · DOAJ Scopus

Gallium Nitride (GaN) is considered as the second most popular semiconductor material in industry after silicon. This is due to its wide applications encompassing Light Emitting Diode (LED) and power electronics. In addition, its piezoelectric properties are fascinating to be explored as…

Design of 2D GaN photonic crystal based on hole displacement for L3 cavity

Nur Dalila Mohd Zamani; Mohd Nuriman Nawi; Dilla Duryha Berhanuddin dkk.

Nanomaterials and Nanotechnology, Vol. 10 · 2020 · Inggris · DOAJ Scopus

In this article, we report modeling, simulation, and analysis of shifting 2D photonic crystal cavity side holes in GaN-AlN-sapphire layered structure. The design was simulated with Lumerical finite-difference time-domain. A lattice constant a , 157 nm, and a hole diameter d , 106 nm, were used in…

Three-Dimensional Finite Element Method Simulation of Perforated Graphene Nano-Electro-Mechanical (NEM) Switches

Mohd Amir Zulkefli; Mohd Ambri Mohamed; Kim S. Siow dkk.

Micromachines, Vol. 8 No. 8 · 2017 · Inggris · DOAJ Scopus

The miniaturization trend leads to the development of a graphene based nanoelectromechanical (NEM) switch to fulfill the high demand in low power device applications. In this article, we highlight the finite element (FEM) simulation of the graphene-based NEM switches of fixed-fixed ends design with…

Surface Modification of Electroosmotic Silicon Microchannel Using Thermal Dry Oxidation

Tuan Norjihan Tuan Yaakub; Jumril Yunas; Rhonira Latif dkk.

Micromachines, Vol. 9 No. 5 · 2018 · Inggris · DOAJ Scopus

A simple fabrication method for the surface modification of an electroosmotic silicon microchannel using thermal dry oxidation is presented. The surface modification is done by coating the silicon surface with a silicon dioxide (SiO2) layer using a thermal oxidation process. The process aims not…