7 results on '"ISMAIL, F. D."'
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2. Thermodynamic Equilibrium Of Nitrogen Species Discharge: Comparison With Global Model
- Author
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Saktioto, Ismail, F. D., Preecha Yupapin, and Ali, J.
- Subjects
Arrhenius equation ,nitrogen plasma ,chemical kinetic model ,low pressure discharge - Abstract
The equilibrium process of plasma nitrogen species by chemical kinetic reactions along various pressures is successfully investigated. The equilibrium process is required in industrial application to obtain the stable condition when heating up the material for having homogenous reaction. Nitrogen species densities is modeled by a continuity equation and extended Arrhenius form. These equations are used to integrate the change of density over the time. The integration is to acquire density and the reaction rate of each reaction where temperature and time dependence are imposed. A comparison is made with global model within pressure range of 1- 100mTorr and the temperature of electron is set to be higher than other nitrogen species. The results shows that the chemical kinetic model only agrees for high pressure because of no power imposed; while the global model considers the external power along the pressure range then the electron and nitrogen species give highly quantity densities by factor of 3 to 5., {"references":["S. E. Babayan, G. Ding and R. F. Hicks, \"Determination of the nitrogen\natom density in the afterglow of a nitrogen and helium, nonequilibrium,\natmospheric pressure plasma,\" Plasma Chemistry and Plasma\nProcessing, 21(4)(2001) 505-521","J. Park, I. Henins, H. W. Herrmann, and G. S. Selwyn, \"An atmospheric\npressure plasma source,\" Appl. Phys. Lett., 76(3)(2000) 288-290","L. Yu, Laurent Pierrot, Christophe O. Laux, Charles H. Kruger, \"Effects\nof vibrational nonequilibrium on the chemistry of two-temperature\nnitrogen plasmas, Plasma Chemistry and Plasma Processing,\n21(4)(2001) 483-503","Toshiki Nakano, \"Some recent topics of non-equilibrium discharge\nplasma technologies, IEEE Trans. on Dielectrics and Electrical\nInsulation, 14(5)(2007)1081-1087","K.H Becker, U. Kogelschatz, K.H Schoenbach, R.J Barker, \"Nonequilibrium\nair plasmas at atmospheric pressure, IoP Publishing, 2004,\npage 125-126.","E. G. Thorsteinsson and J. T. Gudmundsson, A global (volume\naveraged) model of the nitrogen discharge: I. Steady State, Plasma\nSources Science and Technology, 18 (4) (2009) 045001","J Hugill, T Saktioto, A simplified chemical kinetic model for slightly\nionized, atmospheric pressure nitrogen plasmas, Plasma Sources Science\nand Technology, 10 (38) (2001) 38-42","Saktioto, A thermodynamic equilibrium of nitrogen plasma species at\natmospheric pressure: An application for afterglow, Kontribusi Fisika\nIndonesia, 13(2)(2002) 104-107","IUPAC Compendium of Chemical Terminology, 2nd Edition (1997).\n[10] E.G Thorsteinsson, The Nitrogen Discharge. A Global (volume\naveraged) Model Study, Electrical and Computer Engineering,\nUniversity of Iceland, October 2008.\n[11] N St J Braithwaite, \"Introduction to gas discharges\", Plasma Sources\nSci. Technol. 9 (2000) 517-527\n[12] C. H. Kruger, Christophe O. Laux, Lan Yu, Denis M. Packan, Laurent\nPierrot \"Nonequilibrium discharges in air and nitrogen plasmas at\natmospheric pressure,\" Pure Applied Chemical., 74(3)(2002)337-347."]}
- Published
- 2009
- Full Text
- View/download PDF
3. Atom bottom-up manipulation controlled by light for nanobattery use.
- Author
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Ismail, F. D., Teeka, C., Ali, J., and Yupapin, P. P.
- Subjects
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RADIATION trapping , *ATOMIC theory , *THIN films , *DIFFRACTION gratings , *ELECTRIC resonators , *ELECTRIC batteries - Abstract
We propose a new design of the atom bottom-up technique that uses an optical trapping tool to form the atom trapping layer within a thin film grating. By using a PANDA ring resonator, where atoms can be trapped, pumped and controlled by light, where finally, the trapped atoms/molecules can be selected, filtered, and embedded within the required thin film grating layers, which later can form the nanobattery. In application, P-type or N-type atom can be prepared, trapped and embedded within the desired thin film layers, where finally, the nanobattery can be manipulated. The theoretical background of light pulse in a PANDA ring resonator is also reviewed. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1097-1100, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26691 [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
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4. ALL-OPTICAL SWITCHES BASED ON GaAs/AlGaAs QUANTUM DOTS VERTICAL CAVITY.
- Author
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ISMAIL, F. D., JOMTARAK, R., TEEKA, C., ALI, J., and YUPAPIN, P. P.
- Subjects
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QUANTUM dots , *OPTICAL communications , *ATOMS , *SIGNAL processing , *ELECTRIC switchgear , *WAVELENGTHS , *OPTICAL reflection - Abstract
In this paper, an all-optical switch based on self-assembled GaAs/AlAs quantum dots (QDs) within a vertical cavity is designed and proposed. Two essential aspects of this novel device have been investigated, which include the QD/cavity nonlinearity with appropriately designed mirrors and the intersubband carrier dynamics inside QDs. The vertical-reflection-type switches have been investigated with an asymmetric cavity that consists of 12 periods of GaAs/Al0.8Ga0.2As and 25 periods for the front and back mirrors, respectively. The thicknesses of the GaAs and AlGaAs layers are chosen to be 89 and 102 nm, respectively. To give a dot-in-a-well (DWELL) structure, the 65 nm dimension of Si was recommended to deposit within a 20 nm AlAs QW. Results obtained have shown that all-optical switching via the QD excited states has been achieved with a time constant down to 275-fs and over 29.5 nm tunable wavelengths. These results demonstrated that QDs within a vertical cavity have great potential to realize low-power, consumption polarization-insensitive and micrometer-sized switching devices for future optical communication and signal processing systems. [ABSTRACT FROM AUTHOR]
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- 2011
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5. Numerical simulation of spherical plasma focus device using Lee model.
- Author
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Ismail, F. D., Ali, J., and Saktioto, T.
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- 2015
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6. TiO2 DOPED PDPP3T NANOCOMPOSITE THIN FILM FOR PHOTOVOLTAIC APPLICATION.
- Author
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QADER, O. B., RUISHENG, Y., CHAUDHARY, K., MUHAMMAD, F. F., YAHYA, M. Y., AHMAD, M. R., ISMAIL, F. D., and ALI, J.
- Subjects
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THIN films , *CHEMICAL structure , *SPIN coating , *LIGHT absorption , *TOLUENE , *DISPERSION (Chemistry) , *FERROELECTRIC thin films , *INORGANIC polymers - Abstract
In present work, an inorganic dopant TiO2 nanoparticles are introduced into the PDPP3T polymer host material and deposited as thin films via spin coating. Different solvent are investigated to get efficient dispersion of TiO2 nanoparticles as well as effective dissolution of PDPP3T material. The role of TiO2 particles towards optical absorption of PDPP3T material is studied by preparing different PDPP3T/TiO2 blend ratios and annealed at different temperatures. Toluene is found an efficient solvent for the dispersion of TiO2 nanoparticles as well as dissolution of PDPP3T material. Significant increase in optical absorption in UV region 300-400nm is observed for the PDPP3T/TiO2 blend ratio 1:0.2 and the annealing temperature 310oC. The deposited thin film with four layers have demonstrated significant blue shift in peak wavelength and increase in the absorption in UV region (300-400nm). XRD analysis reveals amorphous nature of all deposited thin film. No significant variations in chemical structure are observed with increase in thickness of deposited layer. The addition of TiO2 particle in PDPP3T material significantly enhanced the optical absorption in UV region. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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7. Blood cleaner on-chip design for artificial human kidney manipulation.
- Author
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Suwanpayak N, Jalil MA, Aziz MS, Ismail FD, Ali J, and Yupapin PP
- Subjects
- Humans, Nanomedicine methods, Kidneys, Artificial, Microfluidic Analytical Techniques instrumentation, Nanomedicine instrumentation, Optical Tweezers, Renal Dialysis instrumentation
- Abstract
A novel design of a blood cleaner on-chip using an optical waveguide known as a PANDA ring resonator is proposed. By controlling some suitable parameters, the optical vortices (gradient optical fields/wells) can be generated and used to form the trapping tools in the same way as optical tweezers. In operation, the trapping force is formed by the combination between the gradient field and scattering photons by using the intense optical vortices generated within the PANDA ring resonator. This can be used for blood waste trapping and moves dynamically within the blood cleaner on-chip system (artificial kidney), and is performed within the wavelength routers. Finally, the blood quality test is exploited by the external probe before sending to the destination. The advantage of the proposed kidney on-chip system is that the unwanted substances can be trapped and filtered from the artificial kidney, which can be available for blood cleaning applications.
- Published
- 2011
- Full Text
- View/download PDF
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