Rocks and Minerals
... identify only those few minerals that always have their own characteristic color, such as malachite which is always green. The mineral azurite is always blue. • Many minerals come in a variety of colors. Some are colorless.Colors can also change. ...
... identify only those few minerals that always have their own characteristic color, such as malachite which is always green. The mineral azurite is always blue. • Many minerals come in a variety of colors. Some are colorless.Colors can also change. ...
A method for determining the magnitude of the Raman scattering
... matrix elements of H 2 (7). It should be pointed out that field induced infrared absorption bands associated with Raman active modes of vibration; should also occur for other crystal structures having a center of symmetry, and for impurity modes. In the case of polar crystals such as CaF2 which exhi ...
... matrix elements of H 2 (7). It should be pointed out that field induced infrared absorption bands associated with Raman active modes of vibration; should also occur for other crystal structures having a center of symmetry, and for impurity modes. In the case of polar crystals such as CaF2 which exhi ...
Crystallize Your Visions
... layer are then removed using a causticizer. A circuit path network in line with the pattern of the photo mask is left over. Several such superposed planes in combination then produce the basic framework of a processor or microchip. ...
... layer are then removed using a causticizer. A circuit path network in line with the pattern of the photo mask is left over. Several such superposed planes in combination then produce the basic framework of a processor or microchip. ...
Journal of Materials for optical and electronic devices www.rsc.org/MaterialsC
... efficiency in an ytterbium-doped uoride crystal (YLiF4:Yb3+)8 by Sheik-Bahae's group led to cooling of this material to 114 K starting from room temperature.9 This advance has put solidstate optical refrigeration within the cryogenic temperature range (dened as <123 K by the National Institute of St ...
... efficiency in an ytterbium-doped uoride crystal (YLiF4:Yb3+)8 by Sheik-Bahae's group led to cooling of this material to 114 K starting from room temperature.9 This advance has put solidstate optical refrigeration within the cryogenic temperature range (dened as <123 K by the National Institute of St ...
Aberration-Corrected Analytical Electron Microscopy of Transition Metal Nitride and Silicon Nitride Multilayers
... studies with e.g. transmission electron microscopy. It was by the study of TiN/SiNx multilayers that Hultman et al. could investigate the properties correlation to the TiN/SiNx interface structure and chemistry [22]. Analogous to TiN/SiNx multilayers, ZrN/SiNx multilayers have been attempted. Howeve ...
... studies with e.g. transmission electron microscopy. It was by the study of TiN/SiNx multilayers that Hultman et al. could investigate the properties correlation to the TiN/SiNx interface structure and chemistry [22]. Analogous to TiN/SiNx multilayers, ZrN/SiNx multilayers have been attempted. Howeve ...
Публикация доступна для обсуждения в рамках
... with description of typical reactions and stable forms of substances are presented in [15]. The similar diagram for indium antimonide is described in [3]. The values of Eeqq lie between the values of Eeq of the V and III group components: EeqA < Eeqq < EeqB. In this regard, at the surface of compoun ...
... with description of typical reactions and stable forms of substances are presented in [15]. The similar diagram for indium antimonide is described in [3]. The values of Eeqq lie between the values of Eeq of the V and III group components: EeqA < Eeqq < EeqB. In this regard, at the surface of compoun ...
Liquid crystal display.pdf
... LCDs are more energy efficient and offer safer disposal than CRTs. Its low electrical power consumption enables it to be used in battery-poweredelectronic equipment. It is an electronically-modulated optical device made up of any number of pixels filled with liquid crystals and arrayed in front of a ...
... LCDs are more energy efficient and offer safer disposal than CRTs. Its low electrical power consumption enables it to be used in battery-poweredelectronic equipment. It is an electronically-modulated optical device made up of any number of pixels filled with liquid crystals and arrayed in front of a ...
Applications of Random Nonlinear Photonic Crystals Based
... into the bandwidths of corresponding excimer molecules and excimer amplification modules. Alternatively, an all-solid-state source at 193 nm in competition with excimer laser is desirable, and the latter problem was addressed in [15]. The authors of this study managed to create artificial NPC struct ...
... into the bandwidths of corresponding excimer molecules and excimer amplification modules. Alternatively, an all-solid-state source at 193 nm in competition with excimer laser is desirable, and the latter problem was addressed in [15]. The authors of this study managed to create artificial NPC struct ...
A cathodoluminescence study of CdTe thin
... sites displaced one-quarter of a body-diagonal, or 14[111] from the first.1 Thus, the Bravais lattice is face-centered cubic with a basis of Cd at (0,0,0) and Te at (14, 14, 14) and there are four formula units per unit cell. The point group symmetry can be recognized by applying the symmetry operat ...
... sites displaced one-quarter of a body-diagonal, or 14[111] from the first.1 Thus, the Bravais lattice is face-centered cubic with a basis of Cd at (0,0,0) and Te at (14, 14, 14) and there are four formula units per unit cell. The point group symmetry can be recognized by applying the symmetry operat ...
LECTURE-3 Electrons and Holes in semiconductors: Silicon crystal
... This type of sharing is known as a covalent bond. Such a bond is very stable, and holds the two atoms together very tightly, so that it requires a lot of energy to break this bond. For those who are interested, the actual bonds in a 3-dimensional silicon crystal are arranged at equal angles from eac ...
... This type of sharing is known as a covalent bond. Such a bond is very stable, and holds the two atoms together very tightly, so that it requires a lot of energy to break this bond. For those who are interested, the actual bonds in a 3-dimensional silicon crystal are arranged at equal angles from eac ...
Oxide-ceramic products for high-temperature technology
... Oxide-ceramic materials are often subject to corrosive stresses caused by melting and gases, e.g. during glass processing. Apart from the two extremes – no corrosion attack and complete destruction of material in a very short time – selective attacks on the grain boundary phase must be emphasised. T ...
... Oxide-ceramic materials are often subject to corrosive stresses caused by melting and gases, e.g. during glass processing. Apart from the two extremes – no corrosion attack and complete destruction of material in a very short time – selective attacks on the grain boundary phase must be emphasised. T ...
Porosity in Metal–Organic Compounds - Omar Yaghi
... shows two‐fold interpenetration which could be avoided through structure fine‐tuning based on pyridine‐ derived linkers. We note here that CuII resides in the center of the porphyrin linker, whereas CuI serves as a tetrahedral single‐metal building unit. The tetrapyridyl‐functionalized porphyrin (TP ...
... shows two‐fold interpenetration which could be avoided through structure fine‐tuning based on pyridine‐ derived linkers. We note here that CuII resides in the center of the porphyrin linker, whereas CuI serves as a tetrahedral single‐metal building unit. The tetrapyridyl‐functionalized porphyrin (TP ...
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 ...
Crystal structure
In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms, ions or molecules in a crystalline liquid or solid. It describes a highly ordered structure, occurring due to the intrinsic nature of its constituents to form symmetric patterns.The crystal lattice can be thought of as an array of 'small boxes' infinitely repeating in all three spatial directions. Such a unit cell is the smallest unit of volume that contains all of the structural and symmetry information to build-up the macroscopic structure of the lattice by translation.Patterns are located upon the points of a lattice, which is an array of points repeating periodically in three dimensions. The lengths of the edges of a unit cell and the angles between them are called the lattice parameters. The symmetry properties of the crystal are embodied in its space group.A crystal's structure and symmetry play a role in determining many of its physical properties, such as cleavage, electronic band structure, and optical transparency.