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Journal articles on the topic 'FILM THICKNESS SIMULATION'

Author: Grafiati
Published: 11 September 2023

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1

Markov, A. B., A. V. Solovyov, E. V. Yakovlev, E. A. Pesterev, V. I. Petrov, and M. S. Slobodyan. "Computer simulation of temperature fields in the Cr (film)-Zr (substrate) system during pulsed electron-beam irradiation." Journal of Physics: Conference Series 2064, no. 1 (2021): 012058. http://dx.doi.org/10.1088/1742-6596/2064/1/012058.

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Abstract The paper presents the results of numerical simulation of the distribution of thermal fields during the formation of Cr-Zr surface alloy using a pulsed low-energy high-current electron beam (LEHCEB). The melting thresholds of the Cr-Zr system for different thicknesses of Cr films were calculated. The melting threshold of the Cr-Zr system increases linearly with increasing Cr film thickness. A linear regression dependency model of the melting threshold on the film thickness is proposed. Evaporation thresholds of the Cr-Zr system for different thicknesses of Cr films were calculated. Th
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2

Grigoriev, Fedor V., Vladimir B. Sulimov, and Alexander V. Tikhonravov. "Atomistic Simulation of Stresses in Growing Silicon Dioxide Films." Coatings 10, no. 3 (2020): 220. http://dx.doi.org/10.3390/coatings10030220.

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Dependence of stress values in silicon dioxide films on its thickness in the initial stage of film growth was investigated using atomistic molecular dynamics simulation. It was shown that the stress in normally deposited films was compressive and varied slightly with growth of film thickness. The stress in the glancing angle deposited films was several times lower than the stress in the normally deposited films, and varied from compressive stress to tensile stress with increasing film thickness. An essential anisotropy of stress tensor components was revealed for the case of glancing angle dep
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3

Du, Run, Anying Zhang, Zhihua Du, and Xiaoyu Zhang. "Molecular Dynamics Simulation on Thin-Film Lubrication of a Mixture of Three Alkanes." Materials 13, no. 17 (2020): 3689. http://dx.doi.org/10.3390/ma13173689.

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We used the COMPASS forcefield to perform molecular dynamics (MD) simulation of a mixture composed of three alkanes as the lubricant for the thin-film lubrication. The viscosity of the lubrication film in the non-working state, the final film thickness, and density distribution were investigated. The results reveal that the viscosity error among different initial film thicknesses in the non-working state is within 5%, which confirms the applicability of the model and the forcefield. The viscosity decreases oscillating as temperature increases. Whatever the initial film thickness is, the film t
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4

Wang, Ben, Xiuhua Fu, Shigeng Song, et al. "Simulation and Optimization of Film Thickness Uniformity in Physical Vapor Deposition." Coatings 8, no. 9 (2018): 325. http://dx.doi.org/10.3390/coatings8090325.

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Optimization of thin film uniformity is an important aspect for large-area coatings, particularly for optical coatings where error tolerances can be of the order of nanometers. Physical vapor deposition is a widely used technique for producing thin films. Applications include anti-reflection coatings, photovoltaics etc. This paper reviews the methods and simulations used for improving thin film uniformity in physical vapor deposition (both evaporation and sputtering), covering characteristic aspects of emission from material sources, projection/mask effects on film thickness distribution, as w
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Yan, Ying, Jiarun Li, Qiuyu Liu, and Ping Zhou. "Evaporation Effect on Thickness Distribution for Spin-Coated Films on Rectangular and Circular Substrates." Coatings 11, no. 11 (2021): 1322. http://dx.doi.org/10.3390/coatings11111322.

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Spin-coating is widely applied in the field of thin-film fabrication due to its simplicity and high film uniformity. To prepare thin films on rectangular substrates by spin-coating, the simulation and experimental methods were used to study the characteristics of the film thickness in this work. The two-phase flow simulations of spin-coating on a rectangular substrate and circular substrate were carried out with the volume of fluid (VOF) method. The simulation results showed that the airflow field and the substrate geometry had little effect on the evolution of spin-coated film thickness. Howe
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6

Wang, Kaijie, Yongzhi Cao, Yaowen Cui, Aiying Ye, Shaofan Yi, and Zhenjiang Hu. "Study on Parameter Correlation of Thickness and Performance of Anodizing Film on 6061 Aluminum Alloy Frame in High Energy Laser System." Coatings 12, no. 12 (2022): 1978. http://dx.doi.org/10.3390/coatings12121978.

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As stray laser light is difficult to avoid in high-energy laser systems, it is of great significance to improve the laser damage resistance of the aluminum alloy frame anodizing film system. In this paper, the effects of anodic oxidation parameters on the thickness and performance of 6061 aluminium alloy anodic oxide composite film systems are investigated combining experiments and simulations. The thickness of the oxide film is calculated theoretically, and the simulation model is established. Then the effects of anodizing parameters and the reasons are analyzed. After characterizing the surf
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7

P, Ramesh, and James Gunasekaran E. "Numerical Simulation of Film Thickness Formation in a PFI Engine Under Motoring Conditions." Bonfring International Journal of Industrial Engineering and Management Science 9, no. 3 (2019): 11–15. http://dx.doi.org/10.9756/bijiems.9032.

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8

HU, ZHAN-NING, and V. C. LO. "THICKNESS DEPENDENCE OF THE COERCIVE FIELD IN FERROELECTRIC THIN FILMS." International Journal of Modern Physics B 20, no. 22 (2006): 3223–31. http://dx.doi.org/10.1142/s0217979206035424.

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By considering the effects of the space charges and domain boundaries in ferroelectric thin films, the thickness dependence of coercive field (Ec) is numerically simulated based on the four-state Potts model with the nearest-neighbor interactions between dipole moments. For large thickness, experimental results where Ec decreases with thickness can be produced from our Monte-Carlo simulation. On the other hand, when the thickness is very small, our simulation gets that Ec increases with thickness by the study of the polarization switching in the film. This gives an explanation of the experimen
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9

Khaneft, Alexander V., Vadim A. Dolgachev, and Svyatoslav A. Rybin. "The Effect of Metal Film Thickness on Ignition of Organic Explosives with a Laser Pulse." Molecules 24, no. 24 (2019): 4600. http://dx.doi.org/10.3390/molecules24244600.

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The results of numerical ignition simulation of pentaerythritol tetranitrate (PETN), cyclotrimethylene trinitramine (RDX), cyclotetramethylene tetranitramine (HMX) and 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) by aluminium (Al) and molybdenum (Mo) films heated by nanosecond laser pulses in a three-layer system: glass–metal–explosive material (EM) are presented. Influence of metal film thickness on the time of EM ignition delay was considered. A non-linier dependence of time of delay of ignition of EM from thickness of a metal film is shown. The greatest critical thicknesses of Al and Mo meta
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10

Xiong, Min, Chuanxin Teng, Ming Chen, et al. "Simulation Study of High Sensitivity Fiber SPR Temperature Sensor with Liquid Filling." Sensors 22, no. 15 (2022): 5713. http://dx.doi.org/10.3390/s22155713.

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In this paper, a high sensitivity fiber temperature sensor based on surface plasmon resonance is designed and studied. In the simulation, the single mode fiber is polished to remove most of the cladding, and then gold and silver films are added. Finally, it is embedded in the heat shrinkable tube filled with a thermo-optic coefficient liquid for curing. The numerical simulation results show that the sensing characteristics are sensitive to the remaining cladding thickness of the fiber, the thickness of the gold film and the thickness of the silver film. When the thermo-optic coefficient of the
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11

Chen, Hui, Wei Yu Chen, Yun Fei Chen, and Ke Dong Bi. "Out-of-Plane Thermal Conductivity of Silicon Thin Film Doped with Germanium." Advanced Materials Research 1082 (December 2014): 459–62. http://dx.doi.org/10.4028/www.scientific.net/amr.1082.459.

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The out-of-plane thermal conductivity of silicon thin film doped with germanium is calculated by non-equilibrium molecular dynamics simulation using the Stillinger-Weber potential model. The silicon thin film is doped with germanium atoms in a random doping pattern with a doping density of 5% and 50% respectively. The effect of silicon thin film thickness on its thermal conductivity is investigated. The simulated thicknesses of silicon thin film doped with germanium range from 2.2 to 10.9 nm at an average temperature 300K. The simulation results indicate that the out-of-plane thermal conductiv
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12

Mousa, Hana Mohammed. "Simulation of An Asymmetric TM Metamaterial Waveguide Absorber." JOURNAL OF ADVANCES IN PHYSICS 4, no. 3 (2014): 585–94. http://dx.doi.org/10.24297/jap.v4i3.2013.

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This paper tackles the simulation of an asymmetric  TM mode absorption  in a lossy metamaterial (left-handed) slab (LHM) sandwiched between a lossy substrate and coverd by a losseless dielectric cladding. The asymmetry solutions of the eigen value equation describe lossy –guided modes with complex –valued propagation constants . The dispersion relations , normalized field and the longitudinal attenuation were numerically solved for a given set of parameters: frequency range; film’s thicknesses; and TM mode order. I found out that high order modes which are guided in thinner films ar
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13

Zhou, Qing Xiao, Chao Yang Wang, Zhi Bing Fu, and Yong Jian Tang. "Numerical Simulation of Film Thickness Uniformity Deposited by Planar Circular Magnetron Sputtering System." Advanced Materials Research 887-888 (February 2014): 743–48. http://dx.doi.org/10.4028/www.scientific.net/amr.887-888.743.

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There exist angular offset and eccentricity between target and substrate in most practical multi-target magnetron sputtering systems, which should be seriously considered when we calculate the film distribution. This simulation results suggested that excellent thickness uniformity can be obtained when increased the substrate-target distance, angular offset, and eccentricity, but decreased the film thickness simultaneously. However, superior uniformity films without reducing the thickness remarkably can also obtained when the geometry configuration are proper configured.
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14

Humaidan, Raed M., Ashwaq T. Dahham, and Zuheer N. Majeed. "Designed and Simulation of AlGaAs: GaAs Thin Film Solar Cell Using PC1D Program." NeuroQuantology 20, no. 3 (2022): 265–70. http://dx.doi.org/10.14704/nq.2022.20.3.nq22254.

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Obtained the highest competence and finding the best combination of thickness and concentricity of multilayer solar cells is one the most prominent problems in the field of photovoltaic energy. In this research AlGaAs/GaAs solar cell with four layers of window layer, emitter layer, absorber layer and back surface layer. Is modeled in PC1D emulation software. The performance of the solar cell was studied by changeful the thickness and doping concentration of the window layer from the range (0-1)μm, (1015-1020) respectively. Where the best efficiency was 31.2% at thickness and doping 1015cm-3. W
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15

Hu, Y.-Z., H. Wang, Y. Guo, and L.-Q. Zheng. "Molecular dynamics simulation of ultra-thin lubricating films." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 212, no. 3 (1998): 165–70. http://dx.doi.org/10.1243/1350650981541976.

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Molecular dynamics simulation has been performed in the present study for a Lennard-Jones (LJ) fluid in Poiseuille flow to examine the Theological behaviour of ultra-thin lubricating films. The results show that as two solid walls continuously approach each other, the effective viscosity of the confined fluid increases and goes towards divergence; the critical pressure of the phase transition declines as the film thickness reduces; when the separation exceeds ten molecular layers, however, the pressure curve slopes gently and tends to an asymptotic value-the bulk transition pressure of the lub
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16

Susila, Anggara Budi, Erfan Handoko, Esmar Budi, and Agus Setyo Budi. "Influence of thickness on heat treatment from 300 to 1100 K of aluminum thin film." Journal of Physics: Conference Series 2193, no. 1 (2022): 012028. http://dx.doi.org/10.1088/1742-6596/2193/1/012028.

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Abstract We investigated the influence of Aluminum thin film thickness during heat treatment. The films with thickness of 5 nm, 10 nm and 15 nm were heated from room temperature up to above melting point with same heating rate. Molecular Dynamics (MD) simulation is employed to study the behaviour of the thin film where the atoms were followed based on its trajectories. Thin film thickness gives significance contribution to the mechanism of the melting. Smaller thickness suffered strong pressure oscillation while the thin film temperature is increases. Local crystal structure confirmed the tran
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17

Maksimova, O. G., A. V. Maksimov, and O. S. Baruzdina. "Computer simulation of the structural phase transitions in thin ferroelectric films." Journal of Advanced Dielectrics 07, no. 01 (2017): 1750004. http://dx.doi.org/10.1142/s2010135x17500047.

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The influence of free surface and depolarizing field on structural phase transitions in thin ferroelectric films from an ordered state to a disordered one is investigated. The dependences of the order parameter on the distance from the free film surface are calculated. It is shown that with the presence of the depolarizing field and in its absence, the effective thickness of the surface layer depends on the temperature. Nearby the phase transition point, the thickness increases indefinitely. Calculations considering depolarizing field showed that the phase transition points for the bulk ferroe
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18

Chu, Li-Ming, Jaw-Ren Lin, Hsiang-Chen Hsu, and Yuh-Ping Chang. "EFFECTS OF SURFACE FORCES ON SQUEEZE EHL MOTION BETWEEN ELASTIC BALL AND ELASTIC COATED SURFACE." Transactions of the Canadian Society for Mechanical Engineering 40, no. 5 (2016): 821–33. http://dx.doi.org/10.1139/tcsme-2016-0067.

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The effects of surface forces (SF) and coated layers (CL) on pure squeeze elastohydrodynamic lubrication (EHL) motion of circular contacts are explored under constant load condition by using the finite difference method (FDM) and the Gauss–Seidel iteration method. The transient pressure profiles, surface force, film shapes, and elastic deformation during the pure squeeze process under various operating conditions in the TFEHL regime are discussed. The simulation results reveal that the difference between SFEHL model and EHL model is apparent as the film thickness is thinner than 5 nm. The osci
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19

Zhang, Hua Li, Ji Cai Kuai, and Fei Hu Zhang. "Modeling of Thickness of the Oxide Film in ELID Grinding." Advanced Materials Research 135 (October 2010): 376–81. http://dx.doi.org/10.4028/www.scientific.net/amr.135.376.

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The properties of oxide films are very important for improving the mass of ELID grinding surface. In this paper, a novel calculation model of thickness of oxide films was proposed; the theoretical calculation and simulation analysis were developed, and were compared with the corresponding experimental results. The results proved that the theoretical calculation and simulation results of the thickness of the oxide films had good agreement with the experimental results. This model could predict precisely the change of thickness of oxide film, the instinct of non-linear electrolysis was explained
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20

Zhang, Qiushu, Bei Peng, Jintao Xu, and Mengqi Chu. "Origin of Magnetically Induced Optical Transmission of Magnetic Nanocomposite Films." Polymers 12, no. 11 (2020): 2533. http://dx.doi.org/10.3390/polym12112533.

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Herein, we present an investigation on the origin of the magnetically induced optical transmission of composite films comprised of polydimethylsiloxane and magnetic nanofillers via experiment and simulation. Structured and unstructured films were used in the study, which were fabricated with and without magnetic fields, respectively. Altered optical transmittance was observed from both types of films when they were subjected to an external magnetic field. Numerical analyses were performed to investigate the effect of the particle movement under magnetic field and the film magnetostriction on t
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21

Carey, V. P., and A. P. Wemhoff. "Disjoining Pressure Effects in Ultra-Thin Liquid Films in Micropassages—Comparison of Thermodynamic Theory With Predictions of Molecular Dynamics Simulations." Journal of Heat Transfer 128, no. 12 (2006): 1276–84. http://dx.doi.org/10.1115/1.2349504.

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The concept of disjoining pressure, developed from thermodynamic and hydrodynamic analysis, has been widely used as a means of modeling the liquid-solid molecular force interactions in an ultra-thin liquid film on a solid surface. In particular, this approach has been extensively used in models of thin film transport in passages in micro evaporators and micro heat pipes. In this investigation, hybrid μPT molecular dynamics (MD) simulations were used to predict the pressure field and film thermophysics for an argon film on a metal surface. The results of the simulations are compared with predic
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22

Guangxiang, Jin, Li Jianlin, Xu Li, and Wu Ziqin. "Monte-Carlo simulation of intensity ratio Is/Ic from substrate and film to determine the film thickness." Proceedings, annual meeting, Electron Microscopy Society of America 46 (1988): 972–73. http://dx.doi.org/10.1017/s0424820100106922.

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The methods of thickness of film on substrate by electron probe have been published in literatures. It may be carried out simply by constructing a calibration curve from x-ray intensity measurments made on a series of films with known thickness on substrate.Sweeney et al. obtained a calibration curve based on a calcula- tied x-ray Ø(p z). As the calculation of Ø(p z) is difficult, Cockett and Davis, proposed using the experimental Ø(p z) of Castaing and Descamps. Bishop and Poole utilised Ø(p z) established by Monte-Carlo calculation for calibration curve.Huchings' method took into account the
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23

Wu, Ping Ping, and Bing Rui Xing. "Phase Field Simulation on the Surface Morphology of Cu/Ti Nano Thin Film." Materials Science Forum 1035 (June 22, 2021): 712–17. http://dx.doi.org/10.4028/www.scientific.net/msf.1035.712.

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Cu/Ti binary thin film system has many applications for micro-/nano- electro mechanical systems (MEMS/NEMS), micro-electronics and optoelectronics. In nanoscale, the quality and many physical properties of nano thin films are strongly depended on its surface morphology. In the present paper the development of surface morphology of double layered Cu/Ti thin film heterostructure with different composition and thickness has been studied by using the phase field method. The developed method is based on solving Cahn-Hilliard equations of multi-order parameters with considering the interfacial energ
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24

Wang, Jin Xin, Ya Ping Han, Xue Lian Gao, Ming Hai Luo, and Shao Ze Wang. "Simulation and Experimental of Magnetron Sputtering Film Thickness Distribution." Advanced Materials Research 399-401 (November 2011): 1741–45. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.1741.

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A physical model of magnetron sputtering process was built, the distribution of film thickness on the substrate was deduced, and the data were analysised by using the Mathematica and Matlab. The results show that the distribution of the film thickness on the substrate is uneven and it is also influenced by the radius as well as the distance between the target and substrate. The results of experiment correspond fairly well with the theory. The relational expression provides a theoretical basis for evaluation and estimation of the film thickness.
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25

Han, Ya Ping, Jing Yan Feng, Qiang Fu, Fan Da Zeng, and Guan Wang. "Experimental and Simulation Study of Magnetron Sputtering MgO Film Thickness Distribution." Advanced Materials Research 900 (February 2014): 401–4. http://dx.doi.org/10.4028/www.scientific.net/amr.900.401.

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A physical model of magnetron sputtering process was built, the distribution of MgO film thickness on the substrate was deduced, and the data were analyzed by using the Matlab. nanosized MgO thin film was prepared on Si substrate by magnetron sputtering. SGC-10 was used to measure the thickness of MgO thin film. The results of experiment correspond fairly well with the theory. Both experiment and the theory show that the distribution of the film thickness on the substrate is uneven and it is also influenced by the radius as well as the distance between the target and substrate. The physical mo
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26

Yang, Mengyuan, and Jingfu Wang. "Numerical simulation analysis of rotary cup centrifugal blast furnace slag." MATEC Web of Conferences 355 (2022): 02011. http://dx.doi.org/10.1051/matecconf/202235502011.

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In the process of centrifugal dry granulation of blast furnace slag, the thickness of the liquid film at the outlet of the rotor will have a significant impact on the degree of crushing of the slag after leaving the rotor and the size of the solid particles formed. Therefore, this paper uses the VOF method to analyse the flow of molten slag inside the cup. The results have shown that the slag flow has a significant effect on the thickness of the liquid film and the linear relationship is obvious; the thickness of the liquid film decreases with the increase of the diameter of the rotary cup and
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27

Patrykiejew, A., and S. Sokolowski. "On the Melting and Disordering of Thin Epitaxial Films." Adsorption Science & Technology 25, no. 7 (2007): 451–61. http://dx.doi.org/10.1260/0263-6174.25.7.451.

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The disordering of thin films formed on the (100) plane of the face centred cubic (fcc) crystal was studied by the Monte Carlo simulation method. It was shown that the adsorbed films, which order into the (1 × 1) structure in each layer at low temperatures, disorder in a layer-by-layer mode, at least for films with thicknesses of up to 12 layers. It was also demonstrated that, with increasing film thickness, the temperature at which the film disorders depended on the strain resulting from the mismatch between the sizes of the adsorbate atoms and the surface lattice.
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28

Huang, Jen Ching, Fu Jen Cheng, and Chun Song Yang. "The Study on Young's Modulus of Multilayered Cu/Ni Multilayered Nano Thin Films by Molecular Dynamics Simulation." Applied Mechanics and Materials 513-517 (February 2014): 113–16. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.113.

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The Youngs modulus of multilayered nanothin films is an important property. This paper focused to investigate the Youngs Modulus of Multilayered Ni/Cu Multilayered nanoThin Films under different condition by Molecular Dynamics Simulation. The NVT ensemble and COMPASS potential function were employed in the simulation. The multilayered nanothin film contained the Ni and Cu thin films in sequence. From simulation results, it is found that the Youngs modulus of Cu/Ni multilayered nanothin film is different at different lattice orientations, temperatures and strain rate. After experiments, it can
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29

Palermo, Mattia Felice, Luca Muccioli, and Claudio Zannoni. "Molecular organization in freely suspended nano-thick 8CB smectic films. An atomistic simulation." Physical Chemistry Chemical Physics 17, no. 39 (2015): 26149–59. http://dx.doi.org/10.1039/c5cp04213e.

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30

Fan, Jiang Wei, Qin Lei Sun, and Mei Quan Liu. "Improved Optical Model for SiO2/Si Ultra-Thin Film Thickness Determination by Spectroscopic Ellipsometry." Advanced Materials Research 915-916 (April 2014): 803–7. http://dx.doi.org/10.4028/www.scientific.net/amr.915-916.803.

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Different optical models were adopted to fit theoretical simulation curves of a SiO2 ultra-thin film with a density of 2.2 g/cm3 and a thickness of 6nm grown on Si wafer. The results indicate that thickness obtained from fitting decrease linearly with increase of film density. An improved optical model (density of thin film of 2.4g/cm3, roughness of surface of 0.4nm, roughness of surface of 0.3nm) was obtained according to the above analysis and the GIXRR results of our previous work. The improved model could give more accurate thickness value of ultrathin film with thickness less than 10nm. I
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31

Yanbei, Yang, Tian Chunhui, and Liu Shuang. "Research on Properties of X-Ray Detection Film Based on Thallium Doped Cesium Iodide." E3S Web of Conferences 252 (2021): 02072. http://dx.doi.org/10.1051/e3sconf/202125202072.

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As X-ray detection imaging has a wide range of applications in medicine, industry, public safety, etc., it is of great significance to study its imaging mechanism and improve its imaging performance. Based on the process of X-ray luminescence in the scintillator material, this paper established a simulation model using a microcrystalline column structure to investigate the relationship between the thickness of the detection film and the light conversion efficiency. With the help of the simulation tool MATLAB, the Monte Carlo method was used to simulate the light conversion process of X-ray in
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32

Zhang, Jian Jun, Cheng Long Liu, and Feng Guo. "Numerical Simulation on Variable Load EHL Problems with Single Asperities." Key Engineering Materials 642 (April 2015): 89–93. http://dx.doi.org/10.4028/www.scientific.net/kem.642.89.

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A model of the problem of variable load line contact EHL with single asperities is established. The influences of the single asperities and variable load on the pressure and film thickness are investigated. Numerical results reveal that the existence of single asperities can lead to pressure change drastically and film thickness become thin in the vicinity of asperities. The effects of the variable load on the pressure and film thickness are discussed. The comparison of the variable load and steady load is given.
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33

Zhang, Xing Li, Zhao Wei Sun, and Guo Qiang Wu. "Molecular Dynamics Simulation on the Out-of Plane Thermal Conductivity of Single-Crystal Carbon Thin Films." Advanced Materials Research 60-61 (January 2009): 430–34. http://dx.doi.org/10.4028/www.scientific.net/amr.60-61.430.

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In this article, we select corresponding Tersoff potential energy to build potential energy model and investigate the thermal conductivities of single-crystal carbon thin-film. The equilibrium molecular dynamics (EMD) method is used to calculate the nanometer thin film thermal conductivity of diamond crystal at crystal direction (001), and the non-equilibrium molecular dynamics (NEMD) is used to calculate the nanometer thin film thermal conductivity of diamond crystal at crystal direction (111). The results of calculations demonstrate that the nanometer thin film thermal conductivity of diamon
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34

Chen, Jiayao, Jing Li, Lirong Xu, Wei Hong, Yuzhao Yang, and Xudong Chen. "The Glass-Transition Temperature of Supported PMMA Thin Films with Hydrogen Bond/Plasmonic Interface." Polymers 11, no. 4 (2019): 601. http://dx.doi.org/10.3390/polym11040601.

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The interfacial effect is one of the significant factors in the glass-transition temperature (Tg) of the polymeric thin film system, competing against the free surface effect. Herein, the Tgs of poly (methyl methacrylate) (PMMA) films with different thicknesses and substrates are studied by fluorescence measurements, focusing on the influence of interfacial effects on the Tgs. The strong interaction between PMMA and quartz substrate leads to increased Tgs with the decreased thickness of the film. The plasmonic silver substrate causes enhanced fluorescence intensity near the interface, resultin
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35

Hsu, Chia-Hsun, In-Cha Hsieh, Chia-Chi Tsou, and Shui-Yang Lien. "Simulation and Experimental Study of Photogeneration and Recombination in Amorphous-Like Silicon Thin Films Deposited by 27.12 MHz Plasma-Enhanced Chemical Vapor Deposition." International Journal of Photoenergy 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/698026.

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Amorphous-like silicon (a-Si:H-like) thin films are prepared by 27.12 MHz plasma-enhanced chemical vapor deposition technique. The films are applied to p-i-n single junction thin film solar cells with varying i-layer thickness to observe the effects on the short-circuit current density, as well as the open-circuit voltage, fill factor, and conversion efficiency. The most significant experimental result is thatJschas two different behaviors with increasing the i-layer thickness, which can be related to carrier collection efficiency in the long wavelength region. Furthermore, technology computer
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36

Ma, Lian Xiang, Yuan Zheng Tang, and Yan He. "Thermal Conductivity of Solid Argon Nano-Films from Molecular Dynamics Simulations." Advanced Materials Research 221 (March 2011): 598–603. http://dx.doi.org/10.4028/www.scientific.net/amr.221.598.

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Thermal conductivity of L-J potential solid argon nano-films is calculated by equilibrium molecular dynamics (EMD) and nonequilibrium molecular dynamics (NEMD) simulations in the temperature range from 30K to 80K. A LAMMPS computer program has been modified based on classical molecular dynamics. It can be directly used to calculate the thermal conductivity of nano-films in the direction perpendicular to the film plane. Thermal conductivity calculated from this program is compared with experimental data. It is found that this computer program is competent to calculate the thermal conductivity o
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37

Venner, C. H., and A. A. Lubrecht. "Numerical Simulation of a Transverse Ridge in a Circular EHL Contact Under Rolling/Sliding." Journal of Tribology 116, no. 4 (1994): 751–61. http://dx.doi.org/10.1115/1.2927329.

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This paper investigates the influence of a transverse ridge on the film thickness in a circular EHL contact under rolling/sliding conditions. It is a numerical simulation of the optical EHL work of Kaneta et al. (1992). One of the purposes of this investigation is to check the validity of the algorithm and the Newtonian, isothermal lubricant assumption for film thickness predictions under these conditions (ph = 0.54 GPa). It will be shown that, both quantitatively, the film thickness on the central axis Y = 0, and qualitatively, the film thickness profile through “pseudo interference graphs”,
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38

Wolf, Marius, Sergey Solovyev, and Fatemi Arshia. "Film thickness in elastohydrodynamically lubricated slender elliptic contacts: Part I – numerical studies of central film thickness." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 236, no. 6 (2021): 1043–55. http://dx.doi.org/10.1177/13506501211047756.

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In this paper, analytical equations for the central film thickness in slender elliptic contacts are investigated. A comparison of state-of-the-art formulas with simulation results of a multilevel elastohydrodynamic lubrication solver is conducted and shows considerable deviation. Therefore, a new film thickness formula for slender elliptic contacts with variable ellipticity is derived. It incorporates asymptotic solutions, which results in validity over a large parameter domain. It captures the behaviour of increasing film thickness with increasing load for specific very slender contacts. The
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39

Belim, Sergey V. "Investigation of Phase Transitions in Ferromagnetic Nanofilms on a Non-Magnetic Substrate by Computer Simulation." Materials 15, no. 7 (2022): 2390. http://dx.doi.org/10.3390/ma15072390.

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Magnetic properties of ferromagnetic nanofilms on non-magnetic substrate are examined by computer simulation. The substrate influence is modeled using the two-dimensional Frenkel-Kontorova potential. The film has a cubic crystal lattice. Cases of different ratio for substrate period and ferromagnetic film period are considered. The difference in film and substrate periods results in film deformations. These deformations result in a change in the magnetic properties of the film. The Ising model and the Metropolis algorithm are used for the study of magnetic properties. The dependence of Curie t
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40

MAL, DIBYENDU, SUPARNA SINHA, TAPATI DUTTA, S. MITRA, and SUJATA TARAFDAR. "FRACTAL CRACK PATTERNS IN LAPONITE FILMS AND THEIR SCALING BEHAVIOR." Fractals 14, no. 04 (2006): 283–88. http://dx.doi.org/10.1142/s0218348x06003301.

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We study crack patterns in laponite films of different thickness. The patterns show a self-similarity under coarse-graining, the fractal dimension determined by box-counting has a value around 1.66, independent of film thickness. The cracks on layers of different thickness show a remarkable scaling bahavior. We have measured the cumulative area covered by the cracks versus minimum crack-width resolved. Curves representing crack area for different thickness collapse onto a single curve, when the crack widths are scaled by the film thickness.
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41

Zhikharev, P. V., and N. L. Shwartz. "Effect of mask-film properties on the initial GaAs nanowire growth stages." Journal of Physics: Conference Series 2227, no. 1 (2022): 012015. http://dx.doi.org/10.1088/1742-6596/2227/1/012015.

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Abstract The initial self-catalyze GaAs nanowire (NW) growth stages were studied using Monte Carlo simulation. We analyzed the effect of the mask-film etching rate with liquid gallium for different thicknesses on the initial nanowire formation stages. At a high etching rate NWs do not form on thick mask-films. A high etching rate of a thin film-mask can lead to lateral Ga drop motion over the crystalline substrate surface, which delays the nanowire formation onset. It is shown that, for the NW formation, it is necessary to maintain the correct ratio between the film thickness, etching rate, Ga
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42

Zhang, Xiao Ning, and Qing Wang. "Shielding Effectiveness Simulation of Brass-Iron Sandwich Films." Solid State Phenomena 124-126 (June 2007): 1613–16. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.1613.

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This paper presents a simulation method on shielding effectiveness(SE). The method is completely general and able to optimize shielding materials. We found a sandwich structure that it can efficiently shield plane wave, using this simulation method. The relationship of film thickness and its skin depth was investigated in this study. Two-dimensional curves and three-dimensional graphs were calculated by tri-layer SE formulas. A sandwich structure, which is 3μm iron-brass-iron films, is capable of excellent shielding properties: the SE is between -73dB and -100dB in the frequency range of 1MHz~
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43

Jun, Sukky, Young Min Lee, Sung Youb Kim, and Se Young Im. "Atomistic Simulations of Dislocation-Loop Glidings in Al(111) Nanoindentation." Key Engineering Materials 261-263 (April 2004): 735–40. http://dx.doi.org/10.4028/www.scientific.net/kem.261-263.735.

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Molecular dynamics simulation of nanoindentation on Al(111) surface is presented. The simulation is performed using the Ercolessi-Adams glue potential and the Berendsen thermostat. Boundary conditions of 'pseudo' thin film are imposed in order to focus on the dislocation motion in ultra-thin film. Nucleation and development of defects underneath the indenter tip are visualized, and the gliding patterns of dislocation loops are investigated with particular emphasis on the effect of film thickness. Simulation results show that the early emission of dislocation loop is highly dependent on the fil
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44

Lou, Fei Yan, Qian Fa Deng, and Ju Long Yuan. "Numerical and Experimental Research of the Slurry Film in Chemical Mechanical Polishing (CMP)." Advanced Materials Research 102-104 (March 2010): 669–74. http://dx.doi.org/10.4028/www.scientific.net/amr.102-104.669.

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A three-dimensional hydrodynamic lubrication model for chemical-mechanical polishing is presented based on the Reynolds equation and Reynolds boundary condition. By solving the Reynolds equation, the slurry film pressure distribution has been obtained. The effects of minimum film thickness and the wafer tile angle on the film pressure are analyzed, and the influence of the polishing applied load and rotation speed on slurry film thickness and tilt angle are discussed. At last, by experiment, it is found that the simulation results are similar to experiment results which film thickness is incre
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45

YANG, ZHENYU, and YA-PU ZHAO. "SIZE-DEPENDENT ELASTIC PROPERTIES OF Ni NANOFILMS BY MOLECULAR DYNAMICS SIMULATION." Surface Review and Letters 14, no. 04 (2007): 661–65. http://dx.doi.org/10.1142/s0218625x07010032.

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Size-dependent elastic properties of Ni nanofilms are investigated by molecular dynamics (MD) simulations with embedded atom method (EAM). The surface effects are considered by calculating the surface relaxation, surface energy, and surface stress. The Young's modulus and yield stress are obtained as functions of thickness and crystallographic orientation. It is shown that the surface relaxation has important effects on the the elastic properties at nanoscale. When the surface relaxation is outward, the Young's modulus decreases with the film thickness decreasing, and vice versa. The results a
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46

Ortiz, E., L. Martínez-Gómez, J. F. Valdés-Galicia, R. García, M. Anzorena, and L. Martínez de la Escalera. "Skin protection against UV radiation using thin films of cerium oxide." Radioprotection 54, no. 1 (2019): 67–70. http://dx.doi.org/10.1051/radiopro/2019002.

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In this work, we evaluated the efficiency of cerium oxide as sunscreen using titanium oxide as standard comparison material. Geant4 software was used to perform numerical simulation, we calculated the radiation dose that ultraviolet radiation deposits in a skin sample as a function of thin film thickness of the sunscreens. We found that in the interval between 5 and 15 nm of the thin film thickness and for wavelengths between 160 and 400 nm, cerium oxide has the potential to reduce the radiation dose more than 10% with respect to the same thickness band of titanium oxide. Using thin films of c
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47

Zhang, Yanqin, Zhiquan Zhang, Xiangbin Kong, Rui Li, and Hui Jiang. "Application of dynamic mesh technology in the oil film flow simulation for hydrostatic bearing." Industrial Lubrication and Tribology 71, no. 1 (2019): 146–53. http://dx.doi.org/10.1108/ilt-08-2017-0222.

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Purpose The purpose of this paper was to obtain the lubrication characteristics of heavy hydrostatic bearing in heavy equipment manufacturing industry through theoretical analysis and numerical simulation. Design/methodology/approach This paper discusses the influence of oil film thickness variation on velocity field, outlet-L and outlet-R flow velocity under the hydrostatic bearing running in no-load 0 N, load 400 KN, full load 1,500 KN and rotating speeds of 10 r/min, 20 r/min, 30 r/min, 40 r/min, 50 r/min and 60 r/min, by using dynamic mesh technology and FLUENT software. Findings When the
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48

Liao, Ming-Jun, and Li-Qiang Duan. "Effect of the Hybrid Hydrophobic-Hydrophilic Nanostructured Surface on Explosive Boiling." Coatings 11, no. 2 (2021): 212. http://dx.doi.org/10.3390/coatings11020212.

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The influence of different wettability on explosive boiling exhibits a significant distinction, where the hydrophobic surface is beneficial for bubble nucleation and the hydrophilic surface enhances the critical heat flux. Therefore, to receive a more suitable surface for the explosive boiling, in this paper a hybrid hydrophobic–hydrophilic nanostructured surface was built by the method of molecular dynamics simulation. The onset temperatures of explosive boiling with various coating thickness, pillar width, and film thicknesses were investigated. The simulation results show that the hybrid na
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49

Hassan, M. A., M. B. Elfiky, Y. Nukman, and Reza Mahmoodian. "Monte Carlo Simulation Model for Magnetron Sputtering Deposition." Advanced Materials Research 1105 (May 2015): 69–73. http://dx.doi.org/10.4028/www.scientific.net/amr.1105.69.

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Thin Film layers of metal are often prepared by magnetron sputtering technique for electronic, optical and micro/nanoelectromechanical systems. Usually, experimental work is a common way to find out the optimum deposition conditions and correlate between the thin film properties and the deposition parameters. However, experimental methods are very exhaustive, time and cost-consuming. A good simulation model which can provide the optimum operating conditions to avoid exhaustive experiments and reduce time and cost is highly recommended. Therefore, the present paper is focusing on the developmen
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50

Николаенко, Ю. М., Н. Б. Эфрос та А. Н. Артемов. "Диффузия кислорода в La-=SUB=-0.8-=/SUB=-Sr-=SUB=-0.2-=/SUB=-MnO-=SUB=-3-delta-=/SUB=- пленках разной толщины на NdGaO-=SUB=-3-=/SUB=--подложках". Журнал технической физики 91, № 12 (2021): 1957. http://dx.doi.org/10.21883/jtf.2021.12.51760.120-21.

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The results of investigation by the indirect method of step-by-step varying the oxygen content in the series of epitaxial La0.8Sr0.2Mn3- films on single-crystal NdGaO3 substrates are presented. Using numerical simulation we have revealed that the oxygen diffusion coefficient significantly decreases along the film thickness in the direction from the outer surface to the film-substrate interface under conditions of "compressive" mechanical stresses caused by the mismatch of the in-plane crystalline parameters of the film and substrate materials. In films of d≈12—75 nm thickness, the effect is m
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