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IOSR Journal of Applied Physics (IOSR-JAP) e-ISSN: 2278-4861.
IOSR Journal of Applied Physics (IOSR-JAP) e-ISSN: 2278-4861.

... S.S. Hussaini, N.R. Dhumane, V.G. Dongre, P. Karmuse, P. Ghughare, M.D. Shirsat, Effect of Glycine on the optical properties of Zinc Thiourea Chloride single crystal, Journal of Optoelectronics and Advanced Material (Rapid Communication), 2, 2008, 108112. K. Meera, R. Muralidharan, R. Dhanasekaran, ...
Building Materials by Packing Spheres
Building Materials by Packing Spheres

... Monodisperse colloidal particles are natural building blocks for composite materials with micrometer-scale features, but these particles have one inherent limitation: they are nearly always spheres. Because a colloidal particle is much larger than its constituent atoms, its shape is determined by su ...
Theories of Failure
Theories of Failure

lecture1426861925
lecture1426861925

... larger the values of work function, more difficult it is for the electrons to escape from the metal. In other words, if the difference between Fermi level and the escape level is large, the emission is relatively small. The value of work function can be estimated from measurements of emission curren ...
Lecture 1: Crystal structure
Lecture 1: Crystal structure

... – Atoms are ordered periodically i.e. they form a lattice – Translational symmetry, i.e. The crystal appears identical at several equivalent regions defined by a basic periodicity ...
The PN Junction
The PN Junction

Semiconductor device fabrication
Semiconductor device fabrication

... "dual damascene" technology, both the trench and via are fabricated before the deposition of copper resulting in formation of both the via and line simultaneously, further reducing the number of processing steps. The thin barrier film, called Copper Barrier Seed (CBS), is necessary to prevent copper ...
Vibration Analysis of Laminated Plates and Shells with Improved
Vibration Analysis of Laminated Plates and Shells with Improved

... One of the recent research interests in the structural analysis is in the area of plates and shells, especially in the laminated composite form. Structural composites are widely adopted due to their high specific stiffness and strengths. Obtaining the analytical solution for the laminated composite ...
Neutrons and Fundamental Physics - Institut Laue
Neutrons and Fundamental Physics - Institut Laue

... view of an immediate application, they would have left nothing behind them, and in face of a new requirement, all would have to be done again.” To continue with Poincaré’s words “...scientists believe that there is a hierarchy of facts, and (…) they are right for otherwise there would be no science, ...
Chapter-07
Chapter-07

... These PowerPoint color diagrams can only be used by instructors if the 3rd Edition has been adopted for his/her course. Permission is given to individuals who have purchased a copy of the third edition with CD-ROM Electronic Materials and Devices to use these slides in seminar, symposium and confere ...
Slide 1
Slide 1

Analytical,Experimental and Numerical Analysis of Passive
Analytical,Experimental and Numerical Analysis of Passive

... effects, lots of research and efforts have been done in this field to suppress vibration and to reduce the mechanical failures with different viscoelastic materials. Testing is performed on NI-LAB view with analytical modelling in MATLAB and fem analysis in ANSYS-15 keyword- damping treatment, CLD, ...
5 mm thick periodically poled Rb-doped KTP for high
5 mm thick periodically poled Rb-doped KTP for high

Crystal Structure of Mixed-metal Phosphite, Pb2Ga(HPIIIO3)3(PVO3)
Crystal Structure of Mixed-metal Phosphite, Pb2Ga(HPIIIO3)3(PVO3)

... other lead(II) phosphites [20] and gallium phosphites [9,21]. The calculated total bond valences for Pb(1), Ga(1) and P(1) atoms are 1.671 3.025 and 5.430, respectively, indicating that Pb, Ga and P(1) are in oxidation states of +2, +3 and +5, respectively, in accordance with the crystal structure r ...
Composite Thermoplastic
Composite Thermoplastic

... than metal materials. The typical weight savings for composites over aluminum is approximately 40% (depending on component design). Weight savings versus metals such as steel and brass are even more pronounced, as their specific gravities are several times that of plastic. Composite materials direct ...
Magnetic properties of materials Part 2. Types of magnetism
Magnetic properties of materials Part 2. Types of magnetism

... Uex (ij) = −mi · mj 2 2 g µB We can sum up the exchange interaction between spin i and all of its neighbours, taking an average moment of its neighbours m̄ (which is the total magnetisation of the material divided by the concentration of atoms m̄ = M/N ), ...
Fig. 6. Typical circuits with high magnetic permeability
Fig. 6. Typical circuits with high magnetic permeability

... a) The melt is composed of microregions, i.e. clusters, where the atomic arrangement is determined by a certain order (short-range). b) Owing to relatively strong thermal motion of the particles, the clusters do not have any clear boundaries. For the same reason the lifetime of the clusters is limit ...
Principle of ductile regime machining
Principle of ductile regime machining

... the cutting area with fluid is necessary. ...
0378.PDF
0378.PDF

... nice methods to expose a solid to strong uniaxial stress and to introduce defects without explicitly constructing them. By simulations, shock waves have been studied in monatomic crystals to some depth1. The shock stress is relaxed to a energetically more favorable hydrodynamically compressed state ...
Articles relacionats amb el Subcapítol 2.2 109
Articles relacionats amb el Subcapítol 2.2 109

BN paperMRS.WEB
BN paperMRS.WEB

... favorable mechanical, electrical, optical and chemical properties over a wide range of temperatures. BN crystallizes in two forms; cubic (zinc blende) and hexagonal structures. BN films grown by processes such as CVD and sputtering have the cubic crystal structure (similar to that of GaAs). This mat ...
Outstanding properties of Silicon Carbide
Outstanding properties of Silicon Carbide

... CVD is a process whereby films are formed on a substrate. It is performed at atmospheric or lower pressure and consists in immersing the substrate in a gas flow. Once gas particles are absorbed on the substrate, they react with one another to form a film of the material. The properties of the final ...
4 Constitutive Equations
4 Constitutive Equations

... of elasticity. Moreover, the derivation of objective rates of stress tensors and the corresponding stiffness tensors is not trivial, see, e.g. [Ber05]. From the theoretical point of view there is no reason to work with hypoelastic constitutive relations. However, the majority of commercial finite el ...
application of shape memory alloys in civil engineering
application of shape memory alloys in civil engineering

... applications, alloys with suitable temperature domains of austenitic and martensitic transformation, most likely Fe-based, and efficient methods for the production of such fiber mortars are to be developed. A practical application of such internally pre-stressed cement based materials is envisioned ...
The magnetic properties of the high pressure
The magnetic properties of the high pressure

... site. Neutron diffraction would, of course, resolve the matter unambiguously, but such experiments are not at present possible using the small amount of sample produced in a high pressure synthesis. As Frazer and Brown (1) themselves point out, symmetry does not require NiS04 and FeS04 to have colin ...
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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.
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