Browsing International Journal of Nanoelectronics and Materials (IJNeaM) by Title
Now showing items 286-305 of 454
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Observation of blue shift absorption for surface plasmon resonance in Gold Nano-Islands
(Universiti Malaysia Perlis (UniMAP), 2019-07)Controllable and predefined absorption are essential in the synthesis of new optoelectronic devices. In this work, an ion coater unit with a modified chamber is used to sputter the gold nano-islands onto glass substrates. ... -
Ohmic contacts optimisation for High-Power InGaAs/AlAs double-barrier resonant tunnelling diodes based on a dual-exposure e-beam lithography approach
(Universiti Malaysia Perlis (UniMAP), 2021-12)In this paper, we report on a simple test structure which can be used to accurately extract the specific contact resistivity ρc associated with metal-n++ InGaAs-based low-resistance Ohmic contacts through the transfer ... -
On the application of positron spectroscopy to heteronanostrutures
(Universiti Malaysia Perlis, 2013)The band structure calculations have been performed for the defect-free GaAS-AIAs superlattice and the electron-positron momentum density distributions have been computed. The comparison of data of calculations with the ... -
Optical and Structural Properties of ZnO:Au Nanocomposite Thin films
(Universiti Malaysia Perlis (UniMAP), 2018-07)Zinc Oxide (ZnO) nanoparticles were mixed carefully with gold (Au) nanoparticles. These chemical-compounds were used to make nanocomposite thin films by using the technique of spray pyrolysis. This work studies the XRD ... -
Optical constact of the poly vinyl alcohol grafted Rhodamine B (PVA-g-Rh B)
(Universiti Malaysia Perlis, 2014)The optical constants of the prepared PVA-g-Rh B thin films have been studied. The real and imaginary part of the complex refractive index and dielectric constant of the copolymer were determined. The optical conductivity ... -
Optical fibre sensor using frequency beating technique
(Universiti Malaysia Perlis (UniMAP), 2020-04)In this paper, a new method to realize the optical fibre sensor using an optical heterodyne technique (OHT) is proposed and numerically demonstrated. In this method, the bandpass filter (BPF) was utilized as a reference ... -
Optical Gain and Confinement in Gaas/Algaas Structure Quantum Well Lasers
(Universiti Malaysia Perlis (UniMAP), 2018-01)In this paper we investigate the optical gain seen by the polarization modes for each of Transverse Electric (TE) and Transverse Magnetic(TM) of GaAs/Al0.32Ga0.68As quantumwell lasers. The factor confinement and modal ... -
Optical investigations of GaN deposited nano films using pulsed laser ablation in ethanol
(Universiti Malaysia Perlis (UniMAP), 2022-04)We provide an optical study on GaN thin film testing created by pulsed laser (ablation) in liquid. This study applied six different energies for ablated GaN nanoparticles in the liquid. According to the XRD test, the ... -
Optical modulator with ZnO bulk single crystals
(Universiti Malaysia Perlis (UniMAP), 2017)An optical modulator was fabricated with semiconductor ZnO by associating a nematic liquid crystal layer with indium–tin oxide. This device revealed the height variation in the phase and refractive index of irradiation ... -
Optical properties of manganese chiral single ring by glancing angle deposition technique
(Universiti Malaysia Perlis (UniMAP), 2017)Embracing physical vapor deposition system, GLAD method defines the deposition angle, α, in terms of vapor flux and normal substrate. The substrate rotation angle, φ, defines the azimuthal substrate position relative to ... -
Optical properties of Poly Vinyl Alcohol (PVA)/molasses as biodegradable films for agriculture applications
(Universiti Malaysia Perlis (UniMAP), 2021-10)Biodegradable polymeric films were prepared for agricultural applications. These films based on PVA/ molasses blend mixed with different concentrations (0, 10, 20, 30 and 40 wt. %). These films were characterized by FTIR ... -
Optical, electrical and photovoltaic studies of γ-MnS thin films deposited by spray pyrolysis technique
(Universiti Malaysia Perlis (UniMAP), 2019-07)γ-MnS thin films were prepared on glass substrate by spray pyrolysis method at 280 °C. The optical constants and thickness of the films were extracted using the pattern search optimization technique in combination with a ... -
Optically enhanced N doped ZnO amorphous nanostructures grown by low cost ultrasonicated sol–gel route
(Universiti Malaysia Perlis (UniMAP), 2022-07)N doped ZnO amorphous nanostructures with excellent optical properties were grown by the ultrasonicated sol-gel route. The samples were characterized using structural, morphological and optical studies. XRD patterns confirmed ... -
Optimization of compacting process for Porous Ti-6Al7Nb alloys with Magnesium as a space holder by using Taguchi Method
(Universiti Malaysia Perlis (UniMAP), 2022-10)The optimization of compacting process for porous titanium niobium (Ti-6Al-7Nb) alloys with magnesium as a space holder prepared by powder metallurgy process was studied to analyze the significant porosity required in ... -
Optimization of MEH-PPV based single and double-layer TOLED structure by numerical simulation
(Universiti Malaysia Perlis (UniMAP), 2021-12)In this work, we simulated and characterized Poly [2-methoxy-5-(2’-ethylhexyloxy)-1, 4-phenylene vinylene] (MEH-PPV) based single and double-layer TOLED by using Silvaco ATLAS device simulator to achieve prominent values ... -
Optimization of micromilling parameters using Taguchi Method for the fabrication of PMMA based microchannels
(Universiti Malaysia Perlis (UniMAP), 2020-12)A method is proposed for rapid prototyping of Poly (methyl methacrylate) (PMMA) microfluidic devices utilizing a micromilling machine. The present study is to investigates the influence of micromilling machining parameters ... -
Optimization of the isolation of extracellular vesicles via dielectrophoresis: A preliminary analysis
(Universiti Malaysia Perlis (UniMAP), 2020-12)Extracellular vesicles (EVs); 30 nm to 1 micrometer in size; has gained its attention as their role as biomarkers and communicator from one cell to another. The importance of early detection for diseases is highly integral ... -
Optimization of the Temperature Synthesis of Hydroxyapatite from Indonesian Crab Shells
(Universiti Malaysia Perlis (UniMAP), 2019-01)Hydroxyapatite (HAp) [Ca10(PO4)6(OH)2] is a ceramic class of material widely used for medical applications. The HAp has been synthesized from Indonesian crab shells using a precipitation method at different temperatures ... -
An Optimized Low‐Noise Low‐Power Preamplifier for Cardiac Implants
(Universiti Malaysia Perlis (UniMAP), 2018-04)Among various analog circuits, the preamplifier has a prominent role in the analog front end (AFE) circuit of biomedical implantable microsystems for a reliable acquiring of weak biophysiological signals. The AFE acts ... -
Optimizing electroplating process parameter and Sn-Plating thickness uniformity using modified shielding
(Universiti Malaysia Perlis (UniMAP), 2022-03)Uneven plating thickness distribution across plated surface has become a major challenge in electroplating industry mainly due to the complexity of package design. In most cases, controlling the plating thickness uniformity ...