Optical Characteristics of ZnTeO Thin Films Synthesized by Pulsed
... concentration in our sample is about 1 9 1019 cm-3, the optical transition in our samples is believed to result from oxygen pairs or oxygen cluster instead of the formation of an intermediate band alloy where a shift with oxygen concentration would be expected. The large absorption coefficient obser ...
... concentration in our sample is about 1 9 1019 cm-3, the optical transition in our samples is believed to result from oxygen pairs or oxygen cluster instead of the formation of an intermediate band alloy where a shift with oxygen concentration would be expected. The large absorption coefficient obser ...
High cycle multiaxial fatigue crack initiation : experimental
... The size of the representative element volume (REV) is defined in terms of the mechanical behaviour of a material in order to accurately reflect its macroscopic behavior. The size of the REV depends on the considered phenomenon. The definition of the REV size, in terms of it constitutive behaviour i ...
... The size of the representative element volume (REV) is defined in terms of the mechanical behaviour of a material in order to accurately reflect its macroscopic behavior. The size of the REV depends on the considered phenomenon. The definition of the REV size, in terms of it constitutive behaviour i ...
Strength of materials
... material can absorb before rupturing. It is also defined as the resistance to fracture of a material when stressed. Fig. 5 shows the relationship between toughness and strength for different materials. It can be seen that materials like ceramics have low toughness values in spite of they are so stro ...
... material can absorb before rupturing. It is also defined as the resistance to fracture of a material when stressed. Fig. 5 shows the relationship between toughness and strength for different materials. It can be seen that materials like ceramics have low toughness values in spite of they are so stro ...
damage model for brittle elastic solids with unequal tensile
... of internal microcrack structure. Depending on the material microstructure and the current state of stress and strain and their rates, instantaneous material response and further evolution of damage may involve activation of different microcrack mechanisms. The tensile hoop stress generated at the s ...
... of internal microcrack structure. Depending on the material microstructure and the current state of stress and strain and their rates, instantaneous material response and further evolution of damage may involve activation of different microcrack mechanisms. The tensile hoop stress generated at the s ...
KJM-MENA 3120 Structure and properties of functional materials
... compounds is given little attention. One touches upon metallic structures of ccp (fcc), hcp and bcc types, and on spinel type oxides AB2O4, otherwise structures are visualized in lectures and seminars, but basically for emphasizing chemical bonding, reactivity, boiling/melting points etc. The struct ...
... compounds is given little attention. One touches upon metallic structures of ccp (fcc), hcp and bcc types, and on spinel type oxides AB2O4, otherwise structures are visualized in lectures and seminars, but basically for emphasizing chemical bonding, reactivity, boiling/melting points etc. The struct ...
Kinetics and Diffusion Basic concepts in kinetics
... Self-interstitials in most materials introduce strong deformations into the lattice and have very high formation energy, Δhfi ≈ 3Δhfv for metals. The number of equilibrium interstitials can be estimated by an equation similar to the one derived for vacancies: ⎛ Δhi f ⎞ We can estimate that at room i ...
... Self-interstitials in most materials introduce strong deformations into the lattice and have very high formation energy, Δhfi ≈ 3Δhfv for metals. The number of equilibrium interstitials can be estimated by an equation similar to the one derived for vacancies: ⎛ Δhi f ⎞ We can estimate that at room i ...
Pyroelectrically Driven •OH Generation by Barium Titanate and
... electron transfer from palladium into the pyroelectric material results in electron depletion of the metal and weakening of chemisorption between metal and CO. It is the intention of this study to reveal the basic mechanism of ROS production in the BaTiO3−Pd nanoparticle system. Besides the evidence ...
... electron transfer from palladium into the pyroelectric material results in electron depletion of the metal and weakening of chemisorption between metal and CO. It is the intention of this study to reveal the basic mechanism of ROS production in the BaTiO3−Pd nanoparticle system. Besides the evidence ...
A World Parallel to Hydrogen Bonding
... carbon, black; hydrogen, gray; nitrogen, blue; fluorine, green; iodine, purple. Halogen bonds are dashed lines. show a supramolecular behavior quite close to their aliphatic analogues,31 and they can be easily appended to a wide diversity of organic compounds. In fact, the nucleophilic aromatic subs ...
... carbon, black; hydrogen, gray; nitrogen, blue; fluorine, green; iodine, purple. Halogen bonds are dashed lines. show a supramolecular behavior quite close to their aliphatic analogues,31 and they can be easily appended to a wide diversity of organic compounds. In fact, the nucleophilic aromatic subs ...
Data mining and accelerated electronic structure theory as a tool in
... calculations[9] needed to be updated after several trial calculations, in order to ensure accuracy of the electronic structure and total energy of the material. Hence all steps of the simulations of this work have been made by artificial intelligence and high performance computation. The algorithm w ...
... calculations[9] needed to be updated after several trial calculations, in order to ensure accuracy of the electronic structure and total energy of the material. Hence all steps of the simulations of this work have been made by artificial intelligence and high performance computation. The algorithm w ...
Aging degradation of mechanical structures
... Probability methods are widely used for condition assessment of existing structures. The mathematical formalism of a probabilistic risk assessment (PRA) provides a means for identifying ageing structural components that may play a significant role in mitigating structural risk. Structural condition ...
... Probability methods are widely used for condition assessment of existing structures. The mathematical formalism of a probabilistic risk assessment (PRA) provides a means for identifying ageing structural components that may play a significant role in mitigating structural risk. Structural condition ...
Reaction of Hydrogen-Desorbed Si(100) Surfaces with Water during
... the temperature ramp-up process in order to form highperformance ultrathin SiO2 films.1–3) The dielectric breakdown characteristics of SiO2 films have been reported to depend on the heating condition.4–6) Therefore, it is very important to analyze the Si surface during the temperature ramp-up process ...
... the temperature ramp-up process in order to form highperformance ultrathin SiO2 films.1–3) The dielectric breakdown characteristics of SiO2 films have been reported to depend on the heating condition.4–6) Therefore, it is very important to analyze the Si surface during the temperature ramp-up process ...
Terahertz Technology
... and detection are required. In a recent Nature issue, Chen et al 13 have come up with a unique THz generating device based on a metamaterial. They report the development of an efficient, electrically driven modulator for terahertz signals that functions at room temperature. This work builds on excit ...
... and detection are required. In a recent Nature issue, Chen et al 13 have come up with a unique THz generating device based on a metamaterial. They report the development of an efficient, electrically driven modulator for terahertz signals that functions at room temperature. This work builds on excit ...
Workshop on Semiconductor Materials and Detectors,
... (about 1MeV) were developed and made practicable. The social infrastructure, containers which cannot be transmitted X-ray can become measured. However detectors have low sensitivity and low energy resolution. We use CdTe semiconductor radiation detector. The thick CdTe is necessary to detect high en ...
... (about 1MeV) were developed and made practicable. The social infrastructure, containers which cannot be transmitted X-ray can become measured. However detectors have low sensitivity and low energy resolution. We use CdTe semiconductor radiation detector. The thick CdTe is necessary to detect high en ...
Molecular - Acclab h55.it.helsinki.fi
... atomic clusters from a pre-existing protrusion was shown. In [22], heating of a microprotrusion, caused by Joule heating and the Nottingham effect, was studied. In other works, the influence of microscale molten particles in a high gradient system was investigated [23]. The finite element method was ...
... atomic clusters from a pre-existing protrusion was shown. In [22], heating of a microprotrusion, caused by Joule heating and the Nottingham effect, was studied. In other works, the influence of microscale molten particles in a high gradient system was investigated [23]. The finite element method was ...
A continuum elastic–plastic model for woven-fabric/polymer
... stresses [1–5]. In many cases, the non-linearity may even be detected upon initial loading of the material and continues until catastrophic failure. This non-linear mechanical response is mostly due to the non-linear constitutive behavior of the polymer matrix, microcracking of the matrix material, ...
... stresses [1–5]. In many cases, the non-linearity may even be detected upon initial loading of the material and continues until catastrophic failure. This non-linear mechanical response is mostly due to the non-linear constitutive behavior of the polymer matrix, microcracking of the matrix material, ...
Mg-based compounds for hydrogen and energy storage
... Energy Storage, in the area of fundamental and applied studies of Mg-based compounds for hydrogen and energy storage. In order to find a hydrogen storage system that meets the requirements of low weight (for mobile applications) and adequate capacity, chemical hydrides based on lightweight metals ha ...
... Energy Storage, in the area of fundamental and applied studies of Mg-based compounds for hydrogen and energy storage. In order to find a hydrogen storage system that meets the requirements of low weight (for mobile applications) and adequate capacity, chemical hydrides based on lightweight metals ha ...
Chapter 3 Fracture
... Brittle materials such as concrete or ceramics do not have a yield point. For these materials the rupture strength and the ultimate strength are the same. Ductile material (such as steel) generally exhibits a very linear stress-strain relationship up to a well defined yield point . The linear porti ...
... Brittle materials such as concrete or ceramics do not have a yield point. For these materials the rupture strength and the ultimate strength are the same. Ductile material (such as steel) generally exhibits a very linear stress-strain relationship up to a well defined yield point . The linear porti ...
Lecture #19 Creep in Metals: - References:
... strain which occurs over time. Three stages to the creep curve may be identified (made by Andrade, one of the pioneers in the study of creep): - Primary or transient: in which the creep resistance increases with strain leading to a decreasing creep strain rate. - Secondary (Steady State), or quasi ...
... strain which occurs over time. Three stages to the creep curve may be identified (made by Andrade, one of the pioneers in the study of creep): - Primary or transient: in which the creep resistance increases with strain leading to a decreasing creep strain rate. - Secondary (Steady State), or quasi ...
Sample pages 1 PDF
... atom impurities embedded in an oxide matrix. In connection with transport properties, the superconducting behavior of some cuprates is closely connected to the level of oxygen vacancies. Given their refractory nature, oxides are often used at elevated temperatures and are exposed to strongly oxidisi ...
... atom impurities embedded in an oxide matrix. In connection with transport properties, the superconducting behavior of some cuprates is closely connected to the level of oxygen vacancies. Given their refractory nature, oxides are often used at elevated temperatures and are exposed to strongly oxidisi ...
Publisher version
... charges, which may be significantly stronger than van der Waals interactions and may play an important role for the physical properties of solid molecular borohydrides, for example, Zr(BH4)4 [13]. The hydrogen molecule can also act as a ligand in some complexes of the heavier d-block metals, for exa ...
... charges, which may be significantly stronger than van der Waals interactions and may play an important role for the physical properties of solid molecular borohydrides, for example, Zr(BH4)4 [13]. The hydrogen molecule can also act as a ligand in some complexes of the heavier d-block metals, for exa ...
on plastic void growth in strong ductile materials
... for the applied stress in terms of the void size at any stage of finite plastic deformation. The accuracy of the order k/E is retained in the derivation, where k is the hardening modulus and E is the elastic modulus of the material. The bifurcation stress for the nucleation of the void, or the limit ...
... for the applied stress in terms of the void size at any stage of finite plastic deformation. The accuracy of the order k/E is retained in the derivation, where k is the hardening modulus and E is the elastic modulus of the material. The bifurcation stress for the nucleation of the void, or the limit ...
Homogenization principle based multi
... The homogenization of heterogeneous materials at finite deformations requires certain special prerequisites in addition to the assumptions one imposes for the small deformation case as well. Important requirements for homogenization using representative volume elements are imposed on the size of the ...
... The homogenization of heterogeneous materials at finite deformations requires certain special prerequisites in addition to the assumptions one imposes for the small deformation case as well. Important requirements for homogenization using representative volume elements are imposed on the size of the ...
Brittle fracture - Flaney Associates
... imposed stress. For engineering materials there are two possible modes of fracture, ductile and brittle. In general, the main difference between brittle and ductile fracture can be attributed to the amount of plastic deformation (i.e., dislocation motion) that the material undergoes before fracture ...
... imposed stress. For engineering materials there are two possible modes of fracture, ductile and brittle. In general, the main difference between brittle and ductile fracture can be attributed to the amount of plastic deformation (i.e., dislocation motion) that the material undergoes before fracture ...
Chemical Resistance Testing of UV Exposed Pipe
... known to promote the degradation of many materials There is unless they are suitably protected6. circumstantial evidence that some thermal stabilizers may be affected by UV exposure. A variety of means of providing UV protection to materials, and in particular to plastics, have been employed to ensu ...
... known to promote the degradation of many materials There is unless they are suitably protected6. circumstantial evidence that some thermal stabilizers may be affected by UV exposure. A variety of means of providing UV protection to materials, and in particular to plastics, have been employed to ensu ...
analysis of adhesion characteristics of liner dental materials
... Ionoceal materials did not have significant adhesiveness decrease during exposure to artificial saliva. They resulted only in surface changes, due to material reaction with active saliva components. Major changes were noticed for Life liner material, which practically disappeared after 14 days of tr ...
... Ionoceal materials did not have significant adhesiveness decrease during exposure to artificial saliva. They resulted only in surface changes, due to material reaction with active saliva components. Major changes were noticed for Life liner material, which practically disappeared after 14 days of tr ...