Poisson`s ratio
... decrease. Ph always has positive value and the negative sign in the compensation (R.H.S.) keeps this relation valid. A material that has a large bulk modulus could be imagined to consist of very tightly bound spring and ball materials which will quickly transmit a wave. Ideally, elastic deformation ...
... decrease. Ph always has positive value and the negative sign in the compensation (R.H.S.) keeps this relation valid. A material that has a large bulk modulus could be imagined to consist of very tightly bound spring and ball materials which will quickly transmit a wave. Ideally, elastic deformation ...
tutorial - Artifex Engineering
... Quartz is an extremely useful birefringent material and is available as either natural crystals or as synthetic boules. Natural crystals occur as rough lumps that require orientation to determine the optic axis before processing, while synthetic crystals have reference surfaces aligned to crystallog ...
... Quartz is an extremely useful birefringent material and is available as either natural crystals or as synthetic boules. Natural crystals occur as rough lumps that require orientation to determine the optic axis before processing, while synthetic crystals have reference surfaces aligned to crystallog ...
Production of functional materials on the basis of tungsten
... Exposure of refractory materials to high-density energy flows in the range of g>1045 10 W/сm2, g>106-108W/cm2 leads to molecular destructuring of the crystal lattice and the subsequent formation of a new one. This process causes the formation of materials with both mechanical and chemical properties ...
... Exposure of refractory materials to high-density energy flows in the range of g>1045 10 W/сm2, g>106-108W/cm2 leads to molecular destructuring of the crystal lattice and the subsequent formation of a new one. This process causes the formation of materials with both mechanical and chemical properties ...
Optical Properties
... You will find that the answer is not as commonplace as the material itself! The answer is “Metals are materials with a positive thermal coefficient of resistivity”. What this means is that when the temperature of the metal is raised, its resistance increases. Other materials which can also conduct c ...
... You will find that the answer is not as commonplace as the material itself! The answer is “Metals are materials with a positive thermal coefficient of resistivity”. What this means is that when the temperature of the metal is raised, its resistance increases. Other materials which can also conduct c ...
Ellen Cerreta Trustee-Elect (2015-2018)
... Abstract: Under conditions of static and dynamic loading to high pressures or stresses, it can be critical to quantify the strength of a material and it is well understood that material microstructure controls properties like strength. It is also expected that microstructures, particularly for many ...
... Abstract: Under conditions of static and dynamic loading to high pressures or stresses, it can be critical to quantify the strength of a material and it is well understood that material microstructure controls properties like strength. It is also expected that microstructures, particularly for many ...
Material Analysis and Application for Radio Frequency
... Material Analysis and Application for Radio Frequency Electromagnetic Wave Shielding S.C. Yener∗ and O. Cerezci University, Engineering Faculty, Department of Electrical and Electronic Engineering, Sakarya, Turkey Our environment is full of radio frequency (RF) electromagnetic radiation due to rapid ...
... Material Analysis and Application for Radio Frequency Electromagnetic Wave Shielding S.C. Yener∗ and O. Cerezci University, Engineering Faculty, Department of Electrical and Electronic Engineering, Sakarya, Turkey Our environment is full of radio frequency (RF) electromagnetic radiation due to rapid ...
Plasma ion-assisted deposition coating system
... shift, and achieves the highest adhesion levels and the lowest absorption available. This performance level is particularly crucial in many semiconductor, microelectronics, and telecommunications applications. The lack of voids in the more efficiently packed film means that it is far less susceptibl ...
... shift, and achieves the highest adhesion levels and the lowest absorption available. This performance level is particularly crucial in many semiconductor, microelectronics, and telecommunications applications. The lack of voids in the more efficiently packed film means that it is far less susceptibl ...
Size reduction
... for a very fine product; caking results if the softening point is exceeded. Several examples of change of physical structure during very fine grinding have been reported, for example, changes in the crystal form of calcium carbonate after ball milling, distortion of the kaolinite lattice, and formatio ...
... for a very fine product; caking results if the softening point is exceeded. Several examples of change of physical structure during very fine grinding have been reported, for example, changes in the crystal form of calcium carbonate after ball milling, distortion of the kaolinite lattice, and formatio ...
Acousto-Optic Devices Based on Potassium Rare
... angular eects that make new methods of the laser beam control possible. Unfortunately, this geometry of AO interaction requires quite high driving ultrasonic frequency ...
... angular eects that make new methods of the laser beam control possible. Unfortunately, this geometry of AO interaction requires quite high driving ultrasonic frequency ...
Biological Properties
... 1. Autologous cells 2. Allogenic cells • Primary cells • Cell-Lines • Stem cells ...
... 1. Autologous cells 2. Allogenic cells • Primary cells • Cell-Lines • Stem cells ...
Material Science: Fabric/Textiles
... Layered fabric-reinforced composites are being increasingly sought for use in impact resistance materials (e.g. body armor). However, such materials generally have the structural drawback of poor interlaminar shear strength, with little or no fiber reinforcement in the thickness (Z-axis) direction, ...
... Layered fabric-reinforced composites are being increasingly sought for use in impact resistance materials (e.g. body armor). However, such materials generally have the structural drawback of poor interlaminar shear strength, with little or no fiber reinforcement in the thickness (Z-axis) direction, ...
Effect of Hippuric Acid on the Growth, Structural and Optical
... Abstract: Non-linear optical potassium dihydrogen phosphate (KDP) and ammonium dihydrogen phosphate (ADP) single crystals with 1 mol% of hippuric acid dopant were grown from aqueous solution by employing slow evaporation technique. With appropriate dopants, the KDP and ADP crystals exhibit several d ...
... Abstract: Non-linear optical potassium dihydrogen phosphate (KDP) and ammonium dihydrogen phosphate (ADP) single crystals with 1 mol% of hippuric acid dopant were grown from aqueous solution by employing slow evaporation technique. With appropriate dopants, the KDP and ADP crystals exhibit several d ...
Microwave Interferometry:
... The experimental values of the dielectric constants for the samples were compared to the expected values in Table 3. Most of the values were close to the accepted values. There was a large discrepancy for the measurement of ice, which can be explained by the difficulty of correctly measuring its thi ...
... The experimental values of the dielectric constants for the samples were compared to the expected values in Table 3. Most of the values were close to the accepted values. There was a large discrepancy for the measurement of ice, which can be explained by the difficulty of correctly measuring its thi ...
Reflection-Free One-Way Edge Modes in a Gyromagnetic Photonic Crystal
... of every band is zero if the Hamiltonian is T symmetric [13]. Property (i) implies that as one adiabatically tunes the Hamiltonian (e.g., varying the permeability tensor by tuning the dc magnetic field bias), the Chern number of a given band changes, if and when it does so, abruptly. In fact, this a ...
... of every band is zero if the Hamiltonian is T symmetric [13]. Property (i) implies that as one adiabatically tunes the Hamiltonian (e.g., varying the permeability tensor by tuning the dc magnetic field bias), the Chern number of a given band changes, if and when it does so, abruptly. In fact, this a ...
Effects of Magnetic Fields on Corrosion
... The University of Birmingham Metallurgy and Materials Edgbaston, Birmingham B15 2TT, UK ...
... The University of Birmingham Metallurgy and Materials Edgbaston, Birmingham B15 2TT, UK ...
semiconductors
... The PN Junction Diode Up to now we have examined p-type and n-type material separately. However, the properties of these extrinsic semiconductor materials become useful only when the two types are combined in some way. The area where the two types meet is called a pn junction, and the resulting pro ...
... The PN Junction Diode Up to now we have examined p-type and n-type material separately. However, the properties of these extrinsic semiconductor materials become useful only when the two types are combined in some way. The area where the two types meet is called a pn junction, and the resulting pro ...
Ch 4 Electrical and optical properties
... radiowave and microwave regions of the electromagnetic spectrum. The transmission and absorption of radiation by the polymer dielectric are determined by the quantities e, and e". Even higher frequencies bring us into the infrared and visible parts of the spectrum, that is, to optical phenomena. In ...
... radiowave and microwave regions of the electromagnetic spectrum. The transmission and absorption of radiation by the polymer dielectric are determined by the quantities e, and e". Even higher frequencies bring us into the infrared and visible parts of the spectrum, that is, to optical phenomena. In ...
smart ceramics
... racquets and cricket bats. It may also be possible to reduce noise in cars produced by the vibration of body parts using similar systems. ...
... racquets and cricket bats. It may also be possible to reduce noise in cars produced by the vibration of body parts using similar systems. ...
„Thin Film Electroacoustic Devices“
... Piezoelectric materials and their acoustic wave velocities are summarized in Tab. 1. A device with b = 4 µm (i.e. lithographic structures with 1 µm resolution) made on LiNbO3 has its center frequency at 1 GHz. To go towards higher frequencies, one could either employ a sub-micron lithography or choo ...
... Piezoelectric materials and their acoustic wave velocities are summarized in Tab. 1. A device with b = 4 µm (i.e. lithographic structures with 1 µm resolution) made on LiNbO3 has its center frequency at 1 GHz. To go towards higher frequencies, one could either employ a sub-micron lithography or choo ...
properties of materials
... below elastic limit is called creep. At high temperatures, stresses even below the elastic limit can cause some permanent deformation on stress-strain diagram. There are three stages of creep. In the first stage the material elongates rapidly but at a decreasing rate. In the second stage, the rate o ...
... below elastic limit is called creep. At high temperatures, stresses even below the elastic limit can cause some permanent deformation on stress-strain diagram. There are three stages of creep. In the first stage the material elongates rapidly but at a decreasing rate. In the second stage, the rate o ...
Microwave tunability in a GaAs-based multiferroic heterostructure: Co MnAl/GaAs/PMN-PT
... by the magnetoelastic nature of the magnetic film and ferroelectric/piezoelectric crystal used in the MF element. For example, while an electric field is applied along the d33 direction, the d31 direction experiences compressive strain if d31 ⬍ 0. In the case when an external magnetic field is appli ...
... by the magnetoelastic nature of the magnetic film and ferroelectric/piezoelectric crystal used in the MF element. For example, while an electric field is applied along the d33 direction, the d31 direction experiences compressive strain if d31 ⬍ 0. In the case when an external magnetic field is appli ...
Topic - Duquesne University
... has developed a family of recombinant proteins that incorporate structural repeats to confer mechanical properties and bioactive domains to elicit the desired cell response. To fully utilize these proteins in tissue engineering applications, her research has investigated the relationship between ami ...
... has developed a family of recombinant proteins that incorporate structural repeats to confer mechanical properties and bioactive domains to elicit the desired cell response. To fully utilize these proteins in tissue engineering applications, her research has investigated the relationship between ami ...
Crystal growth and characterization of a new NLO
... reflections. The XRD study reveals that the crystal belongs to orthorohombic system with lattice parameters a = 14.545 Å, b = 7.516 Å and c = 6.150 6.1 Å, Z = 4 and space group is Pca21, which is in agreement with those of reported values [10]. 3.2 Measurement of Density The measurement of density i ...
... reflections. The XRD study reveals that the crystal belongs to orthorohombic system with lattice parameters a = 14.545 Å, b = 7.516 Å and c = 6.150 6.1 Å, Z = 4 and space group is Pca21, which is in agreement with those of reported values [10]. 3.2 Measurement of Density The measurement of density i ...
Properties of magnetic materials
... Molten lava (1100-1200 oC) rises at the fracture situated in the middle of the Atlantic ocean. When the lava cools and forms a rock on both sides of the fracture, the magnetite crystals are magnetised by the Earth’s magnetic field at T < Tc. About once every million years, the direction of the magne ...
... Molten lava (1100-1200 oC) rises at the fracture situated in the middle of the Atlantic ocean. When the lava cools and forms a rock on both sides of the fracture, the magnetite crystals are magnetised by the Earth’s magnetic field at T < Tc. About once every million years, the direction of the magne ...
History of metamaterials
The history of metamaterials begins with artificial dielectrics in microwave engineering as it developed just after World War II. Yet, there are seminal explorations of artificial materials for manipulating electromagnetic waves at the end of the 19th century.Hence, the history of metamaterials is essentially a history of developing certain types of manufactured materials, which interact at radio frequency, microwave, and later optical frequencies.As the science of materials has advanced, photonic materials have been developed which use the photon of light as the fundamental carrier of information. This has led to photonic crystals, and at the beginning of the new millennium, the proof of principle for functioning metamaterials with a negative index of refraction in the microwave range at 10.5 Gigahertz. This was followed by the first proof of principle for metamaterial cloaking (shielding an object from view), also in the microwave range, about six years later. However, a cloak that can conceal objects across the entire electromagnetic spectrum is still decades away. Many physics and engineering problems need to be solved.Nevertheless, negative refractive materials have led to the development of metamaterial antennas and metamaterial microwave lenses for miniature wireless system antennas which are more efficient than their conventional counterparts. Also, metamaterial antennas are now commercially available. Meanwhile, subwavelength focusing with the superlens is also a part of present-day metamaterials research.