Relevant bibliographies by topics / Thickness dependences

Academic literature on the topic 'Thickness dependences'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Thickness dependences"

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Янилкин, И. В., А. И. Гумаров, А. М. Рогов, Р. В. Юсупов, and Л. Р. Тагиров. "Синтез тонких пленок ниобия на кремнии и исследование их сверхпроводящих свойств в области размерного кроссовера." Журнал технической физики 91, no. 2 (2021): 275. http://dx.doi.org/10.21883/jtf.2021.02.50362.170-20.

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Niobium films of 4–100 nm thickness were synthesized on a silicon substrate under ultrahigh vacuum conditions. Measurements of electrical resistance showed a high temperature of the superconducting transition Tc, in the range of 4.7–9.1 K, and extremely small transition widths ΔTc in the range of 260–11 mK. The dependences of Tc and ΔTc on the magnetic field were studied, and superconducting coherence lengths and mean free paths of the conduction electrons were determined for different thicknesses of the synthesized films. A specific effect of the magnetic field on ΔTc was found, which reveals a transition from three-dimensional to two-dimensional superconductivity at thicknesses below 10 nm. The dependences of Tc and ΔTc on the films thickness and the magnitude of the magnetic field are discussed in the framework of existing concepts of superconductivity in thin films of superconducting metals.
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Rinkevich, Anatoly B., Dmitry V. Perov, and Yuriy I. Ryabkov. "Transmission, Reflection and Dissipation of Microwaves in Magnetic Composites with Nanocrystalline Finemet-Type Flakes." Materials 14, no. 13 (June 23, 2021): 3499. http://dx.doi.org/10.3390/ma14133499.

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The microwave properties of a composite material containing flakes of finemet-type nanocrystalline alloy placed in the epoxy matrix have been investigated. Two compositions have been studied: with 15% and 30% flakes. Frequency dependences of transmission and reflection coefficients are measured in the frequency range from 12 to 38 GHz. The dielectric permittivity and magnetic permeability are obtained, and the microwave losses are calculated. The dependences of transmission and reflection coefficients have been drawn as functions of wave frequency and thickness of the composite material, taking into account the frequency dependences of permittivity and permeability. The regions of maximal and minimal microwave absorption have been defined. The influence of wave interference on the frequency dependence of microwave absorption is studied.
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Агекян, В. Ф., А. Ю. Серов, Н. Г. Философов, and G. Karczewski. "Экситонная люминесценция двойных монослоев CdTe в матрице ZnTe." Физика твердого тела 63, no. 5 (2021): 674. http://dx.doi.org/10.21883/ftt.2021.05.50820.273.

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A series of ZnTe matrix containing two CdTe monolayers separated by barrier layers of different thicknesses is studied. The dependences of the energies of the exciton emission bands related to the CdTe monolayers, their relative intensities, and temperature behavior on the thickness of the ZnTe barrier layer are determined. It is established that CdTe monolayers can be considered independent of each other with a barrier layer thickness of more than 30 monolayers.
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Yeshchenko, O. A., V. V. Kozachenko, and A. V. Tomchuk. "Surface Plasmon Resonance in “Monolayer of Ni Nanoparticles/Dielectric Spacer/Au (Ni) Film” Nanostructure." Ukrainian Journal of Physics 63, no. 5 (July 3, 2018): 386. http://dx.doi.org/10.15407/ujpe63.5.386.

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The dual surface plasmon resonance in Ni nanoparticles in “monolayer of Ni nanoparticles/shellac film/Au (Ni) film” planar nanostructures has been observed in UV-vis absorption spectra. The dependences of the intensity, wavelength, and width of the dual SPR absorption peaks of Ni nanoparticles coupled with an Au (Ni) film on the spacer thickness have been studied in the range of spacer thicknesses of 12–43 nm. The main features of these dependences are an increase of the intensity, the blue shift, and the monotonic behavior of the widths of SPR absorption peaks at a decrease of the spacer thickness. The observed dependences have been rationalized as a result of the plasmonic coupling of the monolayer of Ni nanoparticles withthe metal film and the variation of the dielectric permittivity of the environment of Ni nanoparticles caused by the metal film presence. The stronger dependences of the SPR spectral characteristics of Ni nanoparticles have been observed in the nanostructure containing the gold film comparing to that with a nickel one. Such effect is due to the stronger coupling of Ni nanoparticles with an Au film, and the stronger influence of an Au film on the permittivity of the environment of Ni nanoparticles.
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He, Yan, Yuan Zheng Tang, Man Ding, and Lian Xiang Ma. "Thermal Conductivity of Amorphous and Crystalline SiO2 Nano-Films from Molecular Dynamics Simulations." Key Engineering Materials 501 (January 2012): 64–69. http://dx.doi.org/10.4028/www.scientific.net/kem.501.64.

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Normal thermal conductivity of amorphous and crystalline SiO2nano-films is calculated by nonequilibrium molecular dynamics (NEMD) simulations in the temperature range from 100 to 700K and thicknesses from 2 to 6nm. The calculated temperature and thickness dependences of thermal conductivity are in good agreement with previous literatures. In the same thickness, higher thermal conductivity is obtained for crystalline SiO2nano-films. And more importantly, for amorphous SiO2nano-films, thickness can be any direction of x, y, z-axis without effect on the normal thermal conductivity, for crystalline SiO2nano-films, the different thickness directions obtain different thermal conductivity results. The different results of amorphous and crystalline SiO2nano-films simply show that film thickness and grain morphology will cause different effects on thermal conductivity.
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Prudnikov, Vladimir V., Pavel V. Prudnikov, Egor V. Drovorub, and Nikita S. Simakov. "Simulation of magnetic properties of spin valve nanostructures." Herald of Omsk University 25, no. 4 (December 28, 2020): 36–45. http://dx.doi.org/10.24147/1812-3996.2020.25(4).36-45.

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The Monte Carlo study of spin-valve magnetic structures with giant magnetoresistance effects has been performed with the application of the Heisenberg anisotropic model to the description of the magnetic properties of ultrathin ferromagnetic films. The dependences of the magnetic characteristics on the temperature and external magnetic field have been obtained. Dependence of hysteresis phenomena on thickness of ferromagnetic films and various values of intralayer and interlayer exchange interaction is studied.
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Yakimovich, Nikolay V., Sergey N. Bukharov, Victor V. Kozhushko, Anastasiya S. Khmara, and Vladimir P. Sergienko. "Sound-Absorbing Composites Based on Flax and Polymer Fibers." Applied Mechanics and Materials 806 (November 2015): 161–66. http://dx.doi.org/10.4028/www.scientific.net/amm.806.161.

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The paper considers sound absorption of the composite materials, which are based on the natural flax and polymer fibers. The thickness of a single layer of obtained nonwoven composite is about 10 mm. The analysis of absorption dependences is carried out for different thicknesses of the material. It is shown that in the low frequency range the absorption almost linearly increases depending on the thickness. The coefficient of the normal absorption increases with the frequency in the range from 50 Hz up to 1600 Hz. The hot-pressed material can be used for panel production. The sound absorption increases with the thickness of the pressed material. The measurements show the possibilities of application of the composite for the production of the parts of cabs’ interior.
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Voronin, Nikolay A. "Abnormal Structural Strength of Topocomposites." Advanced Materials Research 560-561 (August 2012): 338–43. http://dx.doi.org/10.4028/www.scientific.net/amr.560-561.338.

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The mechanics of contact interaction of rigid spherical indenter with two-layer elastic - plastic half-space, simulating a surface of a solid body with a thin surface layer is considered. Analytical dependences of critical indentation and bearing capacity on mechanical characteristics of materials of a base and a coating, and as well as that for thickness of top layer (coating) in all region of possible thickness are received and analyzed. Existence of regions of the abnormal structural strength allowing the surface layered material to identify unequivocally as a topocomposite is shown. Theoretical dependences were verified by a final elements method.
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Artyuhova, Lyudmila. "ENSURING THE SAFETY OF METAL STRUCTURES IN CONSTRUCTION." Construction and Architecture 9, no. 4 (December 18, 2021): 1–5. http://dx.doi.org/10.29039/2308-0191-2021-9-4-1-5.

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The author considers the main methods of fire protection for residential and public buildings and structures. The efficiency of metal structures is analyzed, the latest methods of corrosion and fire protection of metal structures are selected. For the plastering, cladding and coating methods, a table of the required thickness in relation to the fire resistance limits was compiled. Based on this table, graphical and empirical dependences for the 30k1 I-beam column are constructed, showing the dependence of temperature on time and the limits of fire resistance on the reduced coating thickness. According to the graphic data, the most economical method of fire protection was chosen, but the resulting deflections exceed the limit according to current standards.
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Zolnikov, Konstantin, N. Gamzatov, Svetlana Evdokimova, Andrey Potapov, Roman Dopira, Yuriy Kucherov, Igor' Yanochkin, Sergey Vital'evich Stoyanov, and Aleksey Plotnikov. "Modeling of processes in semiconductor structures under radiation exposure." Modeling of systems and processes 15, no. 4 (December 13, 2022): 106–15. http://dx.doi.org/10.12737/2219-0767-2022-15-4-106-115.

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The radiation impact of outer space has an impact on electronic equipment and their characteristics change. The paper considers the simulation of the process of motion of holes generated in the oxide, which cause local deformation of the potential field of the lattice. Jumps of polarons make the motion of holes dispersed and highly dependent on temperature and oxide thickness. The article presents the temperature dependences of the voltage shift after a single radiation pulse. When holes move to the Si/SiO2 interface, some of the holes are captured by traps. The effect of the influence of the capture cross section on the increase in holes in traps is noticeable in the electrical dependence of the increase in the number of oxide traps immediately after irradiation. The graphs of the dependence of the threshold voltage shift due to oxide traps on the electric field in the oxide are plotted in this work. Immediately after its appearance, the charge of oxide traps begins to be neutralized. To study this process, time, temperature, and electrical dependences are plotted, and the ratio of trapped electrons to the number of trapped holes is shown for dry and wet gate oxide technologies at different oxide thicknesses. Thus, the influence of temperature and radiation influences on the motions of holes and oxide traps in semiconductor structures is shown.
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Dissertations / Theses on the topic "Thickness dependences"

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Bharadwaj, Shashank. "Investigation of oxide thickness dependence of Fowler-Nordheim parameter B." [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000251.

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Johnsson, Peter. "Processing and Properties of Ultrathin Perovskite Manganites." Doctoral thesis, KTH, Microelectronics and Information Technology, IMIT, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3511.

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Lin, Weiwei, Kai Chen, Shufeng Zhang, and C. L. Chien. "Enhancement of Thermally Injected Spin Current through an Antiferromagnetic Insulator." AMER PHYSICAL SOC, 2016. http://hdl.handle.net/10150/614754.

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We report a large enhancement of thermally injected spin current in normal metal (NM)/antiferromagnet (AF)/yttrium iron garnet (YIG), where a thin AF insulating layer of NiO or CoO can enhance the spin current from YIG to a NM by up to a factor of 10. The spin current enhancement in NM/AF/YIG, with a pronounced maximum near the Neel temperature of the thin AF layer, has been found to scale linearly with the spin-mixing conductance at the NM/YIG interface for NM = 3d, 4d, and 5d metals. Calculations of spin current enhancement and spin mixing conductance are qualitatively consistent with the experimental results.
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Tamai, Goro. "Experimental study of engine oil film thickness dependence on liner location, oil properties and operating conditions." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/31066.

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Chen, Cheng. "Anchoring Transitions of Liquid Crystals on Large Angle Deposited SiOx Thin Films." Kent State University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=kent1164139845.

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Galgauskas, Saulius. "The determination of the central corneal thickness of the Lithuanian population and its dependence on age, gender and body constitution." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20111102_111028-08585.

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Cornea is a part of the optical system of the eye, the condition of which is directly related with the eyesight and its quality. Due to the increasing popularity of the correction of refraction defects with the help of excimer laser, central cornea thickness acquires higher prognostic significance for the determination of the success of the operation and probable post-surgical complications. The objective of the survey is to measure the central corneal thickness of adult residents in Lithuania and the relevant factors having impact on it. In total 1650 residents of Lithuania in the age from 18 to 89 years of age were tested. The survey was carried out in the urban and regional primary health care institutions of the 10 counties of Lithuania and at the Centre of Eye Diseases of the Vilnius University Hospital Santariškių klinikos. The average central corneal thickness of men and women in Lithuania was defined in the survey. It was observed that central corneal thickness is neither conditioned by the gender, height or weight of an individual, nor by the eye refraction or the number and the size of corneal endothelia cells. The thickest cornea was observed in persons under 40 years of age, whereas it becomes thinner each decade from 2 to 8 µm after forty. It was identified in the survey that the thicker the cornea is - the smaller is its curvature. On the basis of the survey a table of central corneal thickness was developed for doctors ophthalmologists to be used in their... [to full text]
Ragena – tai akies optinės sistemos dalis, nuo kurios būklės tiesiogiai priklauso regėjimas ir jo kokybė. Populiarėjant refrakcijos ydų korekcijai eksimeriniu lazeriu, ragenos centrinės dalies storis turi vis didesnę prognostinę reikšmę operacijos sėkmės bei pooperacinių komplikacijų galimybės nustatymui. Darbo tikslas – nustatyti Lietuvos suaugusių gyventojų ragenos centrinės dalies storį bei jį veikiančius veiksnius. Ištirta 1650 Lietuvos gyventojų nuo 18 iki 89 metų amžiaus.Tyrimas vykdytas 10 Lietuvos apskričių miestų ir rajonų pirminėse sveikatos priežiūros įstaigose, bei VUL Santariškių klinikos Akių ligų centre. Tyrimo metu nustatytas Lietuvoje gyvenančių vyrų ir moterų vidutinis ragenos centrinės dalies storis. Nustatyta, kad ragenos centrinės dalies storis nepriklauso nuo žmogaus lyties, ūgio, svorio, bei akių refrakcijos ir ragenos endotelio ląstelių skaičiaus ir dydžio. Storiausia ragena nustatoma iki 40 metų amžiaus, vyresniems nei 40 metų ji plonėja kas dešimtmetį nuo 2 iki 8 µm. Nustatyta, kad kuo storesnė ragena, tuo jos gaubtumas yra mažesnis. Tyrimo pagrindu sukurta skirtingo amžiaus žmonių ragenos centrinės dalies storio lentelė, kuria savo praktiniame darbe galės naudotis visi gydytojai oftalmologai.
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Jahjah, Walaa. "NanOstructures MultIferroïques INtrinsèques et extrinsèques : vers un contrôle Électrique des propriétés magnétiquEs (NOMINÉE) Influence of mesoporous or parasitic BiFeO3 structural state on the magnetization reversal in multiferroic BiFeO3/Ni81Fe19polycrystalline bilayers, in Journal of Applied Physics 124 (23), December 2018 Spin pumping as a generic probe for linear spin fluctuations: demonstration with ferromagnetic and antiferromagnetic orders, metallic and insulating electrical states, in Applied Physics Express 12(2), January 2019 Thickness dependence of magnetization reversal and magnetostriction in Fe81Ga19 thin films, in Physical Review Applied 12, August 2019." Thesis, Brest, 2019. http://www.theses.fr/2019BRES0070.

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Nous menons trois études expérimentales du comportement de renversement de l’aimantation (RM) dans trois types différents de bicouches, et sous différents types de contraintes. Nous étudions l’influence sur les propriétés magnétiques de l’état structural du BiFe03, de contraintes mécaniques magnétoélastiques dans le Fe81Ga19, couplées ensuite à des contraintes électriques et même thermiques.Une bicouche polycristalline composée d’un ferromagnétique Ni81Fe19, et d’un multiferroïque intrinsèque BiFe03, est déposée par pulvérisation cathodique. Sa structure et sa morphologie sont caractérisées par diffraction des rayons X, et microscopie électronique à transmission, révélant deux états structuraux fondamentalement différents du BiFe03 dûs à des défauts. Le RM est analysé par magnétométrie à échantillon vibrant, fournissant des mesures angulaires à température ambiante. L’état parasité avec la phase parasite Bi2O3 augmente les valeurs du champ d’échange en fonction de la concentration de celle-ci, qui est contrôlable. Un état mésoporeux est aussi mis en évidence, et empêche l’établissement de l’anisotropie unidirectionnelle du couplage d’échange.Des couches minces magnétostrictives de Fe81Ga19 sont déposées sur des substrats de verre. Leurs caractérisations mettent en évidence une dépendance en épaisseur des propriétés magnétiques, en correspondance avec l’état structural.Deux directions cristallographiques remarquables pour toutes les épaisseurs permettent un RM cohérent. La couche la plus mince présente un coefficient de magnétostriction de 20 ppm, qui diminue pour les couches plus épaisses. Cette tendance est associée à une texture de surface prédominante qui se réduit au profit du volume polycristallin sans orientation préférentielle.De telles couches de Fe81Ga19 sont déposées sur des substrats monocristallins ferroélectriques de PMN-PZT pour former un multiferroïque extrinsèque. Le RM et le caractère d’anisotropie sont contrôlés par un champ électrique. Le composite révèle un fort couplage magnétoélectrique inverse entre les deux phases piézoélectrique et magnétostrictive, de valeur parmi les meilleurs rapportées à ce jour. Des mesures à basses températures montrent un effet magnéto-mécanique dû à la contrainte thermique et imposé par la nature du substrat
We conducted three experimental studies of magnetization reversal (MR) behavior in three different types of bilayers, under different types of strain. We studied the influence on the magnetic properties of the structural state in the BiFe03, of magnetoelastic mechanical strain in the Fe81Ga19, which we then coupled to electrical and even thermal strainA bilayer consisted of using a ferromagnetic Ni81Fe19, and an intrinsic multiferroic BiFe03. These polycrystalline thin films are deposited by sputtering. Their structure and morphology are characterized by X-ray diffraction, and transmission electron microscopy, revealing two fundamentally different structural states of the BiFeO3 due to defects. The MR is analyzed by vibrating sample vector magnetometry, providing angular measurements it room temperature. The parasitic state with the parasitic phase Bi2O3 increases the values of the exchange field according to its concentration, which we can control. A mesoporous state is also highlighted, and prevents the establishment of the unidirectional anisotropy.Magnetostrictive thin films of Fe81Ga19 are deposited on glass substrates. Their characterizations reveal thicknessdependent magnetic properties, in correspondence with the structural state. Two remarkable crystallographic directions for the whole range of thicknesses allow a coherent MR. The thinner films have a magnetostriction coefficient value of 20 ppm, which decreases for the thicker films. This trend is associated with a predominant surface texture which is reduced in favor of the polycrystalline volume with non-preferential orientation.Such Fe81Ga19 films are deposited on single-cristalline ferroelectric substrates of PMN-PZT to form an extrinsic multiferroic.The MR and the anisotropy character are controlled by an electric field. The composite reveals a strong inverse magnetoelectric coupling αCME between the two piezoelectric and magnetostrictive phases, of value among the best reported so far. Measurements at low temperatures show a magnetomechanical effect due to thermal stress, and imposed by the nature of the substrate
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Akoussan, Komlan. "Modélisation et conception de structures composites viscoélastiques à haut pouvoir amortissant." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0188/document.

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L’objectif de ce travail est de développer des outils numériques utilisables dans la détermination de manière exacte des propriétés modales des structures sandwichs viscoélastiques composites au vue de la conception des structures sandwichs viscoélastiques légères mais à haut pouvoir amortissant. Pour cela nous avons tout d’abord développé un outil générique implémenté en Matlab pour la détermination des propriétés modales en vibration libre des plaques sandwichs viscoélastiques dont les faces sont en stratifié de plusieurs couches orientées dans diverses directions. L’intérêt de cet outil, basé sur une formulation éléments finis, réside dans sa capacité à prendre en compte l’anisotropie des couches composites, la non linéarité matérielle de la couche viscoélastique traduit par diverses lois viscoélastiques dépendant de la fréquence ainsi que diverses conditions aux limites. La résolution du problème aux valeurs propres non linéaires complexes se fait par le couplage entre la technique d’homotopie, la méthode asymptotique numérique et la différentiation automatique. Ensuite pour permettre une étude continue des effets d’un paramètre de modélisation sur les propriétés modales des sandwichs viscoélastiques, nous avons proposé une méthode générique de résolution de problème résiduel non linéaire aux valeurs propres complexes possédant en plus de la dépendance en fréquence introduite par la couche viscoélastique du coeur, la dépendance du paramètre de modélisation qui décrit un intervalle d’étude bien spécifique. Cette résolution est basée sur la méthode asymptotique numérique, la différentiation automatique, la technique d’homotopie et la continuation et prend en compte diverses lois viscoélastiques. Nous proposons après cela, deux formulations distinctes pour étudier les effets, sur les propriétés amortissantes, de deux paramètres de modélisation qui sont importants dans la conception de sandwichs viscoélastiques à haut pouvoir amortissement. Le premier est l’orientation des fibres des composites dans la référence du sandwich et le second est l’épaisseur des couches qui lorsqu’elles sont bien définies permettent d’obtenir non seulement des structures sandwichs à haut pouvoir amortissant mais très légères. Les équations fortement non linéaires aux valeurs propres complexes obtenues dans ces formulations sont résolues par la nouvelle méthode de résolution d’équation résiduelle développée. Des comparaisons avec des résultats discrets sont faites ainsi que les temps de calcul pour montrer non seulement l’utilité de ces deux formulations mais également celle de la méthode de résolution d’équations résiduelles non linéaires aux valeurs propres complexes à double dépendance
Modeling and design of composite viscoelastic structures with high damping powerThe aim of this thesis is to develop numerical tools to determine accurately damping properties of composite sandwich structures for the design of lightweight viscoelastic sandwichs structures with high damping power. In a first step, we developed a generic tool implemented in Matlab for determining damping properties in free vibration of viscoelastic sandwich plates with laminate faces composed of multilayers. The advantage of this tool, which is based on a finite element formulation, is its ability to take into account the anisotropy of composite layers, the material non-linearity of the viscoelastic core induiced by the frequency-dependent viscoelastic laws and various boundary conditions . The nonlinear complex eigenvalues problem is solved by coupling homotopy technic, asymptotic numerical method and automatic differentiation. Then for the continuous study of a modeling parameter on damping properties of viscoelastic sandwichs, we proposed a generic method to solve the nonlinear residual complex eigenvalues problem which has in addition to the frequency dependence introduced by the viscoelastic core, a modeling parameter dependence that describes a very specific study interval. This resolution is based on asymptotic numerical method, automatic differentiation, homotopy technique and continuation technic and takes into account various viscoelastic laws. We propose after that, two separate formulations to study effects on the damping properties according to two modeling parameters which are important in the design of high viscoelastic sandwichs with high damping power. The first is laminate fibers orientation in the sandwich reference and the second is layers thickness which when they are well defined allow to obtain not only sandwich structures with high damping power but also very light. The highly nonlinear complex eigenvalues problems obtained in these formulations are solved by the new method of resolution of eigenvalue residual problem with two nonlinearity developed before. Comparisons with discrete results and computation time are made to show the usefulness of these two formulations and of the new method of solving nonlinear complex eigenvalues residual problem of two dependances
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Chen, Shuai-Yan, and 陳帥彥. "Thickness dependences of anisotropic tissues on polarized second harmonic imaging." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/248k48.

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碩士
國立中山大學
醫學科技研究所
106
Second-harmonic generation (SHG) microscopy is a very useful technique for investigating the three-dimensional (3D) organization of anisotropic biological tissues, such as dermis, tendon and blood vessels. These are mainly composed of type-I collagen, which is structurally birefringent and of non-centrosymmetric structure, which can induce strong SHG signal. Therefore, this approach is suitable for clinical study as a non-invasive prediagnosis. However, large number of scattering events occurs between incident light and scattering particles in the tissue, hence it reduces the penetration depth of tissue and limits the application of SHG. It has been reported that the degree of polarization of circular polarized light maintains initial polarization state for deeper penetration depth than the linearly or elliptically polarized light, which has been stimulated with a polarization-sensitive Moten Carlo model; however, this work was only obtained by programing simulation. Therefore, related estimations need to be confirmed by optical microscopy experiments. In this work, we used a Ti:sapphire laser, providing the wavelength at around 810 nm to define three kinds of polarizations of incident beam, which are circular, elliptical and linear polarization. The forward SHG signal was obtained by PMT from pig’s tendon (30, 60, 100μm) and pig’s leather tissue (300, 600 and 700μm). It is confirmed that the longest to shortest penetration depth is in the sequence of circular (150μm), elliptical (143μm) and linear (121μm) polarization when penetrating into thick sample. The percentage of polarization deterioration of circular, elliptical and linear polarization in different thick sample: the change of linear polarization is the most significant (-99%), second is elliptical polarization (-75%), the change in circular polarization is 55% that is the lowest. Keyword: SHG, birefringent, non-central symmetric, polarized light, penetration depth
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Su, Yu-Ru, and 蘇郁儒. "Simulation and Analysis of InGaN p-n Single Junction and InGaN/Si p-n Double Junction Solar Cells with Indium Composition and Thickness Dependences." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/90922207226285283126.

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碩士
國立高雄大學
應用物理學系碩士班
99
InxGa1-xN alloys feature a bandgap ranging from 0.7eV to 3.4eV, covering almost the entire solar spectrum. To optimize the efficiency and the best parameters of solar cells, numerical simulations of InGaN single junction and InGaN/Si double junction solar cells are conducted. The simulation modelling is important and indispensable for designing and fabricating InGaN single junction and InGaN/Si tandem solar cells. We changed the In composition and the thickness of the n- and p-InGaN to determine the short circuit current density (Jsc), open circuit voltage (Voc), fill factor (FF), conversion efficiency (η), and power maximum (Pmax). First, for InGaN single junction solar cell, the Jsc, Voc, and FF have a strong dependence on the In composition. In composition is a critical parameter to determine Jsc, Voc, FF, and η of InGaN solar cells. In0.6Ga0.4N solar cell shows the maximum η ~ 22%. The band gap of In0.6Ga0.4N is 1.42 eV and is almost the same with GaAs. When the total layer thickness is greater than 500 nm, the absorption becomes saturated and the η increases smoothly. The simulation results are congruent with this trend. Second, the p- and n-junction thickness and In composition of InGaN junction are the key point to determine the characteristics of InGaN/Si double junction solar cell. The current matching should be considered in the InGaN/Si double junction solar cells. The smaller Jsc in each junction determines the total Jsc of InGaN/Si double junction solar cell. The total Voc is the sum of the Voc in each junction of InGaN/Si double junction solar cell. Because the current matching affects the Jsc, the curves of the FF have some turning points. The η increases with increasing In content and with dramatically drops with a turning point. With 100 nm p-type InGaN junction, the In0.6Ga0.4N/Si p-n double junction solar cell has the maximum η ~37%. The enhancement of the optimal η of In0.6Ga0.4N/Si p-n double junction solar cell is ~68% higher than that of In0.6Ga0.4N single junction solar cell. The total thickness of InGaN junction must be less than 500 nm, or the most light is absorbed in the InGaN junction and Si junction can not work. The simulation results could provide the clues for optimizing the device structures and process conditions of InGaN single junction and InGaN/Si tandem solar cells.
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Book chapters on the topic "Thickness dependences"

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Bodiul, P. P., A. N. Burchakov, D. V. Gitsu, and A. A. Nikolaeva. "Thickness Dependences of Kinetic Properties of Quantum Wires of Pure and Doped Bismuth." In Advanced Science and Technology of Sintering, 637–42. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4419-8666-5_92.

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Mattera, L. "11.2.1 Thickness dependence of the Curie temperature." In Physics of Solid Surfaces, 649–51. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-47736-6_166.

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Eliseev, Alexander A., Tatiana A. Kalashnikova, Andrey V. Filippov, and Evgeny A. Kolubaev. "Material Transfer by Friction Stir Processing." In Springer Tracts in Mechanical Engineering, 169–88. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_8.

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AbstractMechanical surface hardening processes have long been of interest to science and technology. Today, surface modification technologies have reached a new level. One of them is friction stir processing that refines the grain structure of the material to a submicrocrystalline state. Previously, the severe plastic deformation occurring during processing was mainly described from the standpoint of temperature and deformation, because the process is primarily thermomechanical. Modeling of friction stir welding and processing predicted well the heat generation in a quasi-liquid medium. However, the friction stir process takes place in the solid phase, and therefore the mass transfer issues remained unresolved. The present work develops the concept of adhesive-cohesive mass transfer during which the rotating tool entrains the material due to adhesion, builds up a transfer layer due to cohesion, and then leaves it behind. Thus, the transfer layer thickness is a clear criterion for the mass transfer effectiveness. Here we investigate the effect of the load on the transfer layer and analyze it from the viewpoint of the friction coefficient and heat generation. It is shown that the transfer layer thickness increases with increasing load, reaches a maximum, and then decreases. In so doing, the average moment on the tool and the temperature constantly grow, while the friction coefficient decreases. This means that the mass transfer cannot be fully described in terms of temperature and strain. The given load dependence of the transfer layer thickness is explained by an increase in the cohesion forces with increasing load, and then by a decrease in cohesion due to material overheating. The maximum transfer layer thickness is equal to the feed to rotation rate ratio and is observed at the axial load that causes a stress close to the yield point of the material. Additional plasticization of the material resulting from the acoustoplastic effect induced by ultrasonic treatment slightly reduces the transfer layer thickness, but has almost no effect on the moment, friction coefficient, and temperature. The surface roughness of the processed material is found to have a similar load dependence.
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Ihara, N., and T. Matsushita. "Dependence of Irreversibility Temperature on Thickness of Superconducting Films." In Advances in Superconductivity VII, 497–500. Tokyo: Springer Japan, 1995. http://dx.doi.org/10.1007/978-4-431-68535-7_110.

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Kazu, Nishigaki, Ogawa Soichi, Yoshitake Masaaki, Maruno Yoshio, Takeda Minoru, and Ioda Hiroaki. "Thickness Dependence of Superconducting NbTi Film on Tc and Jc." In Advances in Superconductivity VII, 983–86. Tokyo: Springer Japan, 1995. http://dx.doi.org/10.1007/978-4-431-68535-7_223.

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Okuma, S., K. Enya, H. Hirai, N. Kokubo, and T. Arai. "Thickness Dependence of the I–V Characteristics in Indium Films." In Advances in Superconductivity VII, 121–24. Tokyo: Springer Japan, 1995. http://dx.doi.org/10.1007/978-4-431-68535-7_26.

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Tagomori, Miki, Masaru Kiuchi, Teruo Mstsushita, and Takayo Hasegawa. "Dependence of Irreversibility Field on the Thickness of Superconducting Layer." In Advances in Superconductivity X, 529–32. Tokyo: Springer Japan, 1998. http://dx.doi.org/10.1007/978-4-431-66879-4_123.

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Yokoyama, Yuko, Junichi Shimoyama, and Hiroaki Kumakura. "Thickness Dependence of the Flux Density Distribution in Textured Bi2Sr2CaCu2Ox Tapes." In Advances in Superconductivity V, 517–20. Tokyo: Springer Japan, 1993. http://dx.doi.org/10.1007/978-4-431-68305-6_115.

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Hiruta, Y., H. Oyamatsu, H. S. Momose, H. Iwai, and K. Maeguchi. "Gate Oxide Thickness Dependence of Hot Carrier Induced Degradation on PMOSFETs." In ESSDERC ’89, 732–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-52314-4_154.

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Radulovic, Nenad, Morten Willatzen, and Roderick V. N. Melnik. "Resonant Tunneling Heterostructure Devices – Dependencies on Thickness and Number of Quantum Wells." In Computational Science and Its Applications – ICCSA 2004, 817–26. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-24767-8_86.

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Conference papers on the topic "Thickness dependences"

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Kostenko, V., T. Chamor, L. Chevnyuk, and A. Sorochak. "Thickness Dependences of Ferromagnetic Resonance in Single-Axis Barium Hexaferrites." In 2006 16th International Crimean Microwave and Telecommunication Technology. IEEE, 2006. http://dx.doi.org/10.1109/crmico.2006.256124.

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Tohyama, K., S. Masuda, M. Nagao, T. Tokoro, and M. Kosaki. "Film thickness dependences of ac high field dissipation current waveform for low density polyethylene." In Proceedings of 2005 International Symposium on Electrical Insulating Materials, 2005. (ISEIM 2005). IEEE, 2005. http://dx.doi.org/10.1109/iseim.2005.193312.

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Ujimoto, Katsuya, Takeshi Yoshimura, and Norifumi Fujimura. "Growth temperature and thickness dependences of crystal and micro domain structures of BiFeO3 epitaxial films." In 2012 Joint 21st IEEE ISAF / 11th IEEE ECAPD / IEEE PFM (ISAF/ECAPD/PFM). IEEE, 2012. http://dx.doi.org/10.1109/isaf.2012.6297846.

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Kokhanenko, Andrey, Vladimir Dirko, and Kiril Lozovoy. "DEPENDENCE OF ELASTIC STRESSES ON THE THICKNESS OF THE DEPOSITED MATERIAL FOR GERMANIUM GROWTH ON SILICON." In International Forum “Microelectronics – 2020”. Joung Scientists Scholarship “Microelectronics – 2020”. XIII International conference «Silicon – 2020». XII young scientists scholarship for silicon nanostructures and devices physics, material science, process and analysis. LLC MAKS Press, 2020. http://dx.doi.org/10.29003/m1594.silicon-2020/183-185.

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In this work, the dependences of the elastic stresses on the thickness of the deposited material during the growth of germanium quantum dots on silicon have been determined by the fast electron diffraction method. It is shown that the relative value substrate in this system reaches 12.5%.
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Kuznetsov, Geniy V., and Mikhail A. Sheremet. "Double-Diffusive Natural Convection in an Enclosure Having Finite Thickness Walls." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22335.

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This study is a computational work devoted to mathematical simulation of three-dimensional conjugate heat and mass transfer in an enclosure having finite thickness walls with local heat and mass sources. The mathematical model written in dimensionless variables “vorticity vector – vector potential functions – temperature – concentration” has been solved using an iterative implicit finite-difference method. The heat and mass transfer characteristics of the three-dimensional enclosure have been analyzed using the streamlines, temperature and concentration fields. Main attention was paid to the effects of the Rayleigh number, buoyancy ratio and transient factor on the heat and mass transfer modes. The correlations describing the dependences of average Nusselt and Sherwood numbers on the thermal Rayleigh number have been obtained.
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Xiao, Yegao, Ishwara Bhat, and M. N. Abedin. "Performance dependences on multiplication layer thickness for InP/InGaAs avalanche photodiodes based on time domain modeling." In Optics & Photonics 2005, edited by Randolph E. Longshore. SPIE, 2005. http://dx.doi.org/10.1117/12.615057.

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Poborchii, V., M. Hara, and T. Tada. "Thickness Dependences of Stress, Poisson’s Ratio and Longitudinal Optical Phonon Lifetime in Ultrathin Strained-Silicon-on-Insulator." In 2014 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2014. http://dx.doi.org/10.7567/ssdm.2014.ps-1-7.

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Бабичев, Rudolf Babichev, Левендорский, K. Levendorskiy, Бабичева, G. Babicheva, Натхин, and I. Natkhin. "Band-pass filter based on magnetostatic surface waves, exciting by symmetric coplanar line." In XXIV International Conference. Москва: Infra-m, 2016. http://dx.doi.org/10.12737/22885.

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An excitation of magnetostatic surface waves (MSSW) by symmetric coplanar transmission line was considered for the case, when coplanar line is placed at some distance from the ferrite film surface. The dependence of symmetric coplanar line impedance on the spacing between the line and ferrite film has been studied for design of band-pass filter. Approximate theoretical method of band-pass filter design is presented. Experimental frequency responses of band-pass filter which utilize a yttrium-iron-garnet (YIG) films with different thickness are presented and compared. Frequency dependences of symmetric coplanar line radiation resistance and insertion losses of band-pass filter are discussed.
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Бабичев, Rudolf Babichev, Левендорский, K. Levendorskiy, Натхин, I. Natkhin, Тахтамышьян, and V. Takhtamyshyan. "Band-pass filter based on magnetostatic surface waves, exciting by a one screen coplanar line." In XXIV International Conference. Москва: Infra-m, 2016. http://dx.doi.org/10.12737/22886.

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An excitation of magnetostatic surface waves (MSSW) by a one screen coplanar transmission line was considered for the case, when coplanar line is placed at some distance from the ferrite film surface. The dependence of coplanar line impedance on the spacing between the line and ferrite film has been studied for design of band-pass filter. Approximate theoretical method of band-pass filter design is presented. Experimental frequency responses of band-pass filter which utilize a yttrium-iron-garnet (YIG) films with different thickness are presented and compared. Frequency dependences of a one screen coplanar line radiation resistance and insertion losses of band-pass filter are discussed.
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Бабичев, Rudolf Babichev, Левендорский, K. Levendorskiy, Натхин, and I. Natkhin. "Band-pass filter based on magnetostatic surface waves, exciting by a one screen coplanar line." In XXIV International Conference. Москва: Infra-m, 2016. http://dx.doi.org/10.12737/22887.

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An excitation of magnetostatic surface waves (MSSW) by a one screen coplanar transmission line was considered for the case, when coplanar line is placed at some distance from the ferrite film surface. The dependence of coplanar line impedance on the spacing between the line and ferrite film has been studied for design of band-pass filter. Approximate theoretical method of band-pass filter design is presented. Experimental frequency responses of band-pass filter which utilize a yttrium-iron-garnet (YIG) films with different thickness are presented and compared. Frequency dependences of a one screen coplanar line radiation resistance and insertion losses of band-pass filter are discussed.
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Reports on the topic "Thickness dependences"

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Boettger, J. C. Thickness dependencies in the calculated properties of metallic ultra-thin films. Office of Scientific and Technical Information (OSTI), December 1997. http://dx.doi.org/10.2172/642814.

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Glenn J. W., D. Lazarus, P. Pile, J. Sculli, and J. Walker. The dependence of low momentum particle production on target material and thickness. Office of Scientific and Technical Information (OSTI), July 1985. http://dx.doi.org/10.2172/1157440.

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Dowben, P. A., J. Zhang, D. Li, and M. Onellion. Resonant photoemission studies of thickness dependence of the unoccupied Gd 5d bands. Office of Scientific and Technical Information (OSTI), December 1994. http://dx.doi.org/10.2172/10113448.

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Toney, Michael F. Thickness and Growth Temperature Dependence of Structure and Magnetism in FePt Thin Films. Office of Scientific and Technical Information (OSTI), June 2003. http://dx.doi.org/10.2172/813258.

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Larbalestier, David, Eric Hellstron, and Dmytro Abraimov. buffer Layer Growth, the Thickness Dependence of Jc in Coated Conductors, Local Identification of Current Limiting Mechanisms and Participation in the Wire Development Group. Office of Scientific and Technical Information (OSTI), December 2011. http://dx.doi.org/10.2172/1031724.

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Oliynyk, Kateryna, and Matteo Ciantia. Application of a finite deformation multiplicative plasticity model with non-local hardening to the simulation of CPTu tests in a structured soil. University of Dundee, December 2021. http://dx.doi.org/10.20933/100001230.

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In this paper an isotropic hardening elastoplastic constitutive model for structured soils is applied to the simulation of a standard CPTu test in a saturated soft structured clay. To allow for the extreme deformations experienced by the soil during the penetration process, the model is formulated in a fully geometric non-linear setting, based on: i) the multiplicative decomposition of the deformation gradient into an elastic and a plastic part; and, ii) on the existence of a free energy function to define the elastic behaviour of the soil. The model is equipped with two bonding-related internal variables which provide a macroscopic description of the effects of clay structure. Suitable hardening laws are employed to describe the structure degradation associated to plastic deformations. The strain-softening associated to bond degradation usually leads to strain localization and consequent formation of shear bands, whose thickness is dependent on the characteristics of the microstructure (e.g, the average grain size). Standard local constitutive models are incapable of correctly capturing this phenomenon due to the lack of an internal length scale. To overcome this limitation, the model is framed using a non-local approach by adopting volume averaged values for the internal state variables. The size of the neighbourhood over which the averaging is performed (characteristic length) is a material constant related to the microstructure which controls the shear band thickness. This extension of the model has proven effective in regularizing the pathological mesh dependence of classical finite element solutions in the post-localization regime. The results of numerical simulations, conducted for different soil permeabilities and bond strengths, show that the model captures the development of plastic deformations induced by the advancement of the cone tip; the destructuration of the clay associated with such plastic deformations; the space and time evolution of pore water pressure as the cone tip advances. The possibility of modelling the CPTu tests in a rational and computationally efficient way opens a promising new perspective for their interpretation in geotechnical site investigations.
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