Investigation of the promotional effect of H-2 on the CO oxidation over monolithic catalysts
Investigation of the promotional effect of H-2 on the CO oxidation over monolithic catalysts
Materials Literature
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POLIURETANO ESPANSO E PROCESSO PER LA SUA PRODUZIONE
La presente invenzione si riferisce ad un metodo per la produzione di poliuretano espanso. La presente invenzione si riferisce anche a poliuretano espanso comprendente ossido di grafene.
Mesures à l'échelle sub-micronique des charges piégées dans les isolants : utilisation de méthodes dérivées de la Microscopie à Force Atomique
National audience
Newmark algorithm in the finite-difference time-domain analysis of ferrite magnetized in an arbitrary direction
The permeability tensor of saturated magnetized ferrite in frequency domain in the laboratory coordinate system is obtained by using the transformation matrix between the principal and laboratory system. The constitutive relation in time domain, which is a kind of second order differential equation, is derived by empl…
Nano-scale lithography and in-situ electrical measurements based on the micro-chips in a transmission electron microscope
In this paper, the in-situ membrane chips with the electrodes are fabricated with the micro-chip technique. Using a home-made in-situ holder, the fine lithography on the InAs nanowires is demonstrated by the focused electron beam at low temperature in a transmission electron microscope. It is found that the conductanc…
전자 세라믹 : Zn-Mn 혼합물의 열 증발에 의한 ZnO 결정의 성장에 미치는 Mn의 영향
다른 형상을 가진 ZnO 결정들이 공기 중 대기압 분위기에서 Zn-Mn 혼합물의 열증발과 산화 공정을 통하여 생성되었다. ZnO 결정의 형상은 Zn-Mn 혼합물 내의 Mn의 양에 따라 변하였다. ZnO 결정의 형상은 원료 혼합물에 함유된 Mn의 양이 감소함에 따라 막대 형상에서 테트라포드 형상으로 변하였다. 이 결과는 Mn의 농도가 ZnO 결정의 형상에 큰 영향을 미친다는 사실을 나타낸다. XRD 결과에서는 ZnO 결정들이 육방정의 wurtzite 결정 구조를 가지고 있음을 알 수 있었다. 원료 내의 Mn의 양에 상관 없이 생성된 모든 ZnO 결정으로부터 380 n…
Two-dimensional model of symmetrical double-gate strained Si single Halo metal-oxide semiconductor field effect transistor with gate stack dielectric
In this paper, a novel symmetrical double-gate strained Si single halo metal-oxide semiconductor field effect transistor with gate stack dielectric is proposed. The two-dimensional Poisson's equation is solved under suitable boundary condition by applying the parabolic potential approximation. This analytical model fo…
A flexible microstructure based on graphene for harvesting weak energy
A novel microstructure of flexible substrate/graphene/ZnO nanowires/graphene multilayer film for harvesting weak energy is for the first time presented as far as we know in this paper. First, the design of this microstructure and its operational principle is discussed theoretically. Next, we study the key technology i…
Design and optimization of broadband polarization beam splitter made from a wave-structured multilayer film
Based on the 2D-PC wave multilayer film structure, a method to broaden the bandwidth of polarization beam splitter is proposed, which is composed of two different thickness periodic film stacks. Combined with the evaluation function of polarization splitting characteristic, the particle swarm optimization method is em…
A new approach to designing circular grating focusing reflector
A new approach to designing planar, high numerical aperture, low loss, focusing reflectors using circular subwavelength high contrast gratings is presented. Through analyzing particular physical scene, a mathematical transformation from existing “focus line” convergent beam, which can be achieved by bar grating reflec…
Сarrying Out of Linear and Angular Measurements of the Second Traces on the Shot Bullets Using Modern Microscopic Equipment
ОСОБЕННОСТИ ПРОВЕДЕНИЯ ЛИНЕЙНЫХ И УГЛОВЫХ ИЗМЕРЕНИЙ СЛЕДОВ ПОЛЕЙ НАРЕЗОВ НА ВЫСТРЕЛЕННЫХ ПУЛЯХ С ИСПОЛЬЗОВАНИЕМ СОВРЕМЕННОГО МИКРОСКОПИЧЕСКОГО ОБОРУДОВАНИЯ А
Influence of inclusion in functionally graded materials on the surface temperature distributions
In this paper, based on the hyperbolic equation of heat conduction, utilizing the image method and the wave function expansion method, the temperature distributions on the surface of a functionally graded material(FGM) containing a cylindrical inclusion are investigated. According to the model of thermal waves, a gene…
Tunneling conductance spectrum of graphene ferromagnet-insulator-superconductor junctions
Starting with the mean field Dirac-Bogoliubov-de-Gennes model and the Bolonder-Tinkham-Klapwijk formalism, we study the transport properties of a graphene ferromagnet-insulator-superconductor junction by taking into account the effect of the finite width of the insulating region. The tunneling conductance oscillations…
Simulation analysis of the depth of field characteristic of negative refraction flat lens
In virtue of wave-front coding theory, a computer simulation analysis of the depth of field extension of negative refraction flat lens is carried out. The depth of field extension can be achieved by 6.7 times in the slab, when its index is -1, through computer simulation. When the refractive index of the tablet is sli…
Effects of electron-electron interaction in pristine and doped graphene
The goal of this master thesis is to investigate the eect of electron-electron interaction on electronic properties of graphene that can be measured experimentally. A tight-binding model, which includes up to next-nearest-neighbor hopping, with parameters tted to density functional theory calculations, has been used t…
A contribution from Raman spectroscopy for investigations of trans and cis Isomers of Cholesteryl Esters in biological samples
The cis-trans geometry conversion of double bonds in lipids is an endogenous process that can be mediated by sulfur-centered free radicals [1,2]. Trans isomers of poly-unsaturated fatty acids can be assumed as marker of free radical stress and their recognition in biological samples is a crucial step that can be helpe…
Selüloz tozlarının tekstil kaplamacılığında kullanımı üzerine bir araştırma
Bu tez çalışmasında, selüloz tozlarının tekstil kaplamacılığında dolgu maddesi olarak kullanılabilirliği araştırılmıştır. Ön işlem görmüş, %100 poliester dokuma kumaşa, bıçaklı kaplama tekniği kullanılarak selüloz tozları aplike edilmiştir. Öncelikle, fiksaj sıcaklığının ve süresinin selüloz tozlarının sararma davranı…
Surface and interface phonon-polaritons in four layer systems consisting of polar ternary mixed crystals
Surface and interface phonon-polaritons in a four-layer (vacuum/polar binary crystal slab/polar ternary mixed crystal slab/polar binary crystal substrate) system are investigated with the modified random-element-isodisplacement model and the Born-Huang approximation, based on the Maxwell's equations with the usual bou…
Research of Interaction Passing Microtraces on Spent Cartridges and Objects of the Environment with a Scanning Electron Microscope
For forensic ballistics is important to reconstruct the events of the use of firearms. One way of reconstruction is based on the position of spent cartridges relative to surrounding objects. Often required to establish the fact of secondary reflection in the collision of objects sleeves and find a place on the collisi…
Deformation modeling of InSb IRFPAs under liquid nitrogen shock
The deformation appearing in InSb infrared focal plane arrays (IRFPAs) as subjected to liquid nitrogen shock tests, is an important criterion to assess the reliability of the structure designed and to predict the number of thermal cycling after which no cracks appear in InSb IRFPAs. After analyzing both the deformatio…