Contents - Akademi Sains Malaysia

More documents

Recommendations

Info

ASM Science Journal, Volume 7(1), 2013— bottom conductor, via, and top conductor. The chosenmaterial for the coils was Cu, because of its excellentconductivity.Illustrations of the three-dimensional coil structureare shown in Figure 1. The layer structure from bottomupwards, starts with a substrate of alumina ceramic orglass. This is followed by a metal layer comprising of abottom conductor. Next, is the insulation layer used toinsulate between the bottom and top metal layers. Thethree-dimensional structure is then completed with the topmetal layer which made up of the top conductor. The topand bottom conductors are connected by means of vias.SIMULATIONInvestigations on the physical characteristic of the coilswere executed by using FEM simulation software. Theaim of the simulation was to measure the inductance andmagnetic flux density of the coils to manipulate threephysical characteristics of the coil i.e. width of the coil;distance between successive coils; and the gap between thetop and bottom coils.First, we modelled the geometry of three-dimensionalcoil by using draw function. The initial dimension of thecoils' width, distance between successive coils, and gapbetween the top and bottom coils were 20 µm, 50 µm and40 µm, respectively.The thickness of the coils were set at 20 µm and thenumber of windings were 2. Windings were kept at aminimum to simplify the modeling geometry, modelmeshing and solving processes. The current passingthrough the coils was set at 1A for all conditions.Figure 2 illustrates the model and defines the threephysical characteristics of the coil to be manipulated bymeans of simulation.After geometry modeling, the next step was to set themodule and application mode for simulation process. Sincethe aim of the simulation was to determine the inductanceand magnetic flux density at constant current, the moduleand application mode chosen were AC/DC module andmagnetostatics.Mesh process was done after the model Physics settingsin which the subdomain and boundary of the model hadbeen set. Consecutively, the solving process was executedafter the meshing. Table 1 summarizes the simulationprocesses in this work.As a preliminary study, this model did not include themagnetic core. This is to simplify the simulation processTop conductorInsulating layerBottom conductoron substrateFigure 1. Three-dimensional coils structure.28
ModelDistance betweensuccessive coilsGap between topand bottom coilsWidth of coilFigure 2. Model of the three-dimensional coils and definition of physical characteristics.
Page 1 and 2: ContentsASM Sc. J.Volume 7(1), 2013
Page 3 and 4: INTERNATIONAL ADVISORY BOARDAhmed Z
Page 5: The Academy of SciencesMalaysia (AS
Page 8 and 9: NEWS FOCUSBio-Jet Fuel — Challeng
Page 10 and 11: ASM Science Journal, Volume 7(1), 2
Page 12 and 13: NitrogengasAcetylene gasFume hoodGa
Page 18 and 19: ControllerN 2N 2ValveValvePreheater
Page 26 and 27: ASM Sci. J., 7(1), 18-22Electron-ph
Page 28 and 29: v I= v MthASM Science Journal, Volu
Page 40 and 41: 4.2 × 10 -5Magnetic energy (Em) Ma
Page 42 and 43: 2.0 × 10 -5Inductance (L)Magnetic
Page 46 and 47: addition, examination of the freque
Page 48 and 49: equipped with a computer image anal
Page 50 and 51: Storage modulus (Pa)1.80E+101.60E+1
Page 52 and 53: (a)(b)(c)Figure 6. Micrographs: (a)
Page 54 and 55: 0 20 40 60 80 100 120 140 160 180 2
Page 56 and 57: 0.00 20 40 60 80 100 120 140 160180
Page 58 and 59: 0 20 40 60 80 100 120 140 160Temper
Page 60 and 61: 2.0100.00 20 40 60 80 100 120 140 1
Page 62 and 63: 3.02.53.02.02.5CB10TSSAlbipoxTimber
Page 64 and 65: Figure 18. SEM micrographs of the f
Page 66 and 67: Crawford, E & Lesser, AJ 1998, ‘T
Page 82 and 83: Climate Change — Environment andI
Page 86 and 87:
ASM Science Journal, Volume 7(1), 2
Page 88 and 89:
ASM Science Journal, Volume 7(1), 2
Page 90 and 91:
Announcements!!!!!!!!!!!!!!!!!!!!!!
Page 93 and 94:
ASM PublicationsMosquitoes and Mosq
Page 95 and 96:
ASM PublicationsEnhancing Animal Pr
Page 97 and 98:
ASM PublicationsThe Red Jungle Fowl
Page 99 and 100:
Vol. 3, No. 1, June : 1823-6782ASM
Page 101 and 102:
ASM PublicationsIn Pursuit of Excel
Page 103 and 104:
ASM PublicationsASM Lecture SeriesW
Page 105 and 106:
ASM PublicationsA Nobel Trip to Lin
Page 107 and 108:
Vol. 6, No. 2, December 2012 • IS
Page 109 and 110:
About the JournalMission StatementT
Page 111:
ASM SCIENCE JOURNAL(ASM Sc. J.)ORDE
Page 114:
NEWS FOCUSBio-Jet Fuel — Challeng
show all

Contents - Akademi Sains Malaysia

Create successful ePaper yourself

Delete template?

Save as template?