Browsing School of Microelectronic Engineering (Articles) by Title
Now showing items 133-152 of 185
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Objective evaluation of speech dysfluencies using wavelet packet transform with sample entropy
(Elsevier Inc, 2013-05)Dysfluency and stuttering are a break or interruption of normal speech such as repetition, prolongation, interjection of syllables, sounds, words or phrases and involuntary silent pauses or blocks in communication. Stuttering ... -
On the electronic nature of silicon and germanium based oxynitrides and their related mechanical, optical and vibrational properties as obtained from DFT and DFPT
(Elsevier B.V., 2012-02)Electronic structure, bonding and optical properties of the orthorhombic oxynitrides Si2N2O and Ge2N2O are studied using the density function theory as implemented in pseudo-potential plane wave and fullpotential (linearized) ... -
Operating temperature analysis of LED with cylindrical Cu slug
(Trans Tech Publications, 2014-01)High power light emitting diodes is the new era of lighting due to momentous supremacy in terms of lighting efficacy over traditional lighting systems. The reliability of LED is dependent on its junction temperature. This ... -
Optical investigations using ultra-soft pseudopotential calculations of Si0.5Ge0.5 alloy
(Elsevier Ltd, 2008-12)Ultra-soft pseudopotential (US-PP) calculations with a powerful package called VASP (Vienna ab initio simulation package) are used. The total density of state and the energy gap of Si0.5Ge0.5 alloy of zinc-blende structure ... -
Optimal selection of long time acoustic features using GA for the assessment of vocal fold disorders
(Trans Tech Publications, 2013)In recent times, vocal fold problems have been increasing dramatically due to unhealthy social habits and voice abuse. Non-invasive methods like acoustic analysis of voice signals can be used to investigate such problems. ... -
Oscillatory dynamical switching system of bulk ferroelectrics
(Science Publications, 2005)This study gives a detailed account of calculation of the bulk ferroelectric (FE) oscillatory dynamical system switching for first and second-order phase transition, respectively. All the formalism is delineated in the ... -
Photoinduced absorption and nonlinear optics of triglycine selenate single crystals under uniaxial pressure
(Elsevier B.V., 2011-06-15)We studied an influence of uniaxial pressure on the triglycine selenate single crystals during simultaneous illumination by the continuous wave 532 laser at power about 300 mW. Simultaneously we have studied two-photon ... -
Photoinduced effects in TiO2 nanocrystalline films with different morphology
(Elsevier B. V., 2010-10-22)The complex studies of photoinduced absorption, second harmonic generation and third harmonic generation were performed for TiO2 films of different morphology. In particular we have studied the influence of a bicolor laser ... -
Photoinduced piezooptical changes caused by microsecond CO2 Infrared lasers in lead-germanate rare earth tridoped glasses
(Elsevier B.V., 2011-05-31)We have observed substantial influence of the illumination by 3.5 μs CO2 laser on the piezooptical coefficients of 59 PbO - 41 GeO 2 (in wt.%) glasses prepared with Tm2O3, Er2O3, Yb2O3 using the following concentrations ... -
Photovoltaic characteristics of hybrid MEH-PPV-nanoparticles compound
(Elsevier B.V., 2013)Organic solar cell research has vastly developed in recent years. These organic solar cells however are still limited to low power conversion efficiencies. This has led to the generation of photovoltaic cells based on ... -
Physical characterization of BST with different (x') ratios
(Trans Tech Publications, 2014)Nowdays Barium strontium titanate (BST) can be applied into many fields of engineering. Its properties attracted more researchers to research and apply it into many fields of study. In this work, sol-gel method of preparing ... -
The physics of Tsunami: basic understanding of the Indian Ocean disaster
(Science Publications, 2005)This study gives a simple physics explanation behind the Indian Ocean earthquake, called December 26th‘s Tsunami. The explanation based on physics energy conservation and wave properties have been used to understand this ... -
Polymer core BGA stress analysis at minimal vertical loading
(Trans Tech Publications, 2012-12)Ball grid array is an interconnection method widely used in the electronic packaging industry. The reliability of the solder ball is being improved by introducing new materials for the solder ball. In this study, the stress ... -
Prediction study of the structural and elastic properties for the cubic skutterudites LaFe4A12 (A = P, As and Sb) under pressure effect
(Elsevier Ltd., 2010-10)We have performed accurate ab initio total energy calculations using the full-potential linear augmented plane wave plus local orbitals method with the local density approximation for the exchangecorrelation potential ... -
Relationship between controllable process parameters on bump height in ENIG
(Trans Tech Publications, 2013)This paper reports the factors that affect the bump height in electroless nickel immersion gold (ENIG) and their interrelation between each other. Bump height is a critical issue that needs to be investigated because a ... -
Reproducibility of silicon single electron quantum dot transistor
(Nano Science and Technology Institute, 2006)In principle, based on the form of tunnel junction, single electron transistor (SET) can be classified into four types, i.e. nanowire SET, quantum dot SET, nanotube SET and point contact SET. Another classification is SET ... -
The SEM & AFM images of MEH-PPV films below CLA region
(Elsevier Ltd., 2013)Poly [2-methoxy-5--ethylhexyloxy)-1,4-phenylene vinylene] (MEH-PPV) is an example of conducting polymer that used to fabricate an organic light emitting diode (OLED). The surface roughness and homogeneity of MEH-PPV film ... -
Shear ram height investigation for gold wire bond shear test
(Trans Tech Publications, 2012-12)This paper presents the simulation of gold wire bond shear test. The stress and strain response of the gold ball bond during wire bond shear was examined. The simulation was done using a A 3D non-linear finite element ... -
Shear ram speed characterization for copper wire bond shear test
(Trans Tech Publications, Switzerland., 2012)This paper presents the evaluation of the stress and strain response of the copper ball bond during wire bond shear test using finite element analysis. A 3D non-linear finite element model was developed for the simulation. ... -
Shear speed analysis on Sn-3.9Ag-0.6Cu Solder
(Trans Tech Publications (TTP), 2013)Ball Grid Array (BGA) is a type of semiconductor interconnection used in Integrated Circuit (IC) which is being scaled down to micro and nano size. The reliability of BGA in IC becomes a concern as the size of IC reduces. ...