... well-established knowledge of the electrical and optical propertiesof GaSe thin films, in this paper, we report the results on electrical and optical measurements of amorphous thin films of GaSe nanorods ... diameter of the nanorods varies from 140 to 180 nm, and the length is of several hundreds of nanometers Figure presents the temperature dependence of the dc conductivity ofthin films of a- GaxSe100-x ... field of micro/optoelectronics Significant research efforts have been focused to the study of the electrical and optical propertiesof this compound in thin film formation Since the optimization of...
... and coefficients of thermal expansion of amorphous Cu-Zr thinfilms - 162 7.1 Measurement of Young’s modulus of amorphous Cu-Zr thinfilms - 162 7.1.1 Analytical model ... coefficients of thermal expansion of amorphous (CTE) Cu-Zr thinfilms It has been proposed that the elastic moduli of metallic glasses correlate with their thermal and mechanical properties, such ... review of the basic concepts and analyses of the mechanicalpropertiesof materials, as well as the elements of beam mechanics used in this project Chapter describes the fabrication xiv processes of...
... Chapter Effects of NH3 Plasma Treatment on MechanicalPropertiesof Porous Low-k ThinFilms 71 4.1 Effects of NH3 Plasma Treatment on the MechanicalPropertiesof ZIRKON LK2200 ... plasma treatment of certain porous low-k films can improve the mechanicalpropertiesof the films significantly NH3 plasma treatment enhances the mechanicalpropertiesof porous low-k films by changing ... low-k films to improve their mechanicalproperties We conjecture that the nitridation of these films should help to enhance the mechanical strength of the films due to the incorporation of stronger...
... the mechanicalpropertiesof TCO films and most of them were focused on n-type TCOs Report on mechanicalpropertiesof p-type TCOs is rare, if any In particular, no report on the mechanicalproperties ... 2.4 MECHANICALPROPERTIESOF TCOS 2.4 MechanicalPropertiesof TCOs The mechanicalproperties such as hardness, elastic modulus, internal stress or adhesion of transparent conductive oxide films ... 5.7 Growth rate versus inverse of substrate temperature of the films 95 5.8 Effect of substrate temperature on film mechanicalproperties 96 5.9 XRD patterns offilms prepared at different...
... and 2.8(f) These may be thought of as the absence of a plane of atoms (intrinsic stacking faults) or the insertion of rows of atoms that disturb the arrangement of atoms (extrinsic stacking faults) ... example of volume defects is presented in Fig 2.9 This shows MnS inclusions in an A707 steel Another example of a volume defect is presented in Fig 1.16(d) This shows evidence of $1–2 vol % of porosity ... approximately 0.3–0.5 of the melting temperature in degrees Kelvin Since the evolution of microstructure is often controlled by diffusion processes, a brief introduction to elementary aspects of diffusion...
... of the mechanicalpropertiesof materials It is not intended to be a comprehensive review of all the different aspects ofmechanical properties; such a task would be beyond the capabilities of ... Inc 1 Overview of Crystal/Defect Structure and MechanicalProperties and Behavior 1.1 INTRODUCTION The mechanical behavior of materials describes the response of materials to mechanical loads ... macroscopic level of understanding of structure [Figs 16(a)–(d)] They are often unaware of the atomic and microstructural constituents that can affect the mechanical behavior of materials and of the role...
... soaking, modulus of elasticity (MOE), modulus of rupture (MOR), and internal bond (IB) propertiesof the panels and compare the age effect on the physical and mechanicalpropertiesof the fiberboard ... 3.1.2 Physical and MechanicalProperties Specific gravity (SG) is a measure of the density of a substance The specific gravity of a substance is a comparison of its density to that of water The specific ... utilization The physical and mechanicalpropertiesof bamboo vary with the age of the bamboo and the height of the culm [Chauhan 2000] In general, SG and the propertiesof bamboo drop from the top...
... Cardiac Physiology Page of 23 MECHANICALPROPERTIESOF THE HEART AND ITS INTERACTION WITH THE VASCULAR SYSTEM Daniel Burkhoff MD PhD, Associate Professor of Medicine, Columbia University ... Let us first examine the propertiesof the ventricle at end-diastole Imagine the ventricle frozen in time in a state of complete relaxation We can think of the propertiesof this ventricle with ... measure of the arterial properties and therefore is not useful within the context of indexing the afterload of the ventricular chamber Page 18 of 23 IX QUANTIFYING THE PERFORMANCE DETERMINANTS OF...
... Chapter 10 Electrical and Magnetic PropertiesofThinFilms 451 10.1 Introduction to Electrical PropertiesofThinFilms 451 Conduction in Metal Films ... years Thin Films - A Historical Perspective Thin- film technology is simultaneously one of the oldest arts and one of the newest sciences Involvement with thinfilms dates to the metal ages of antiquity ... Optical PropertiesofThinFilms 507 11.1 Introduction 507 11.2 Propertiesof Optical Film Materials 508 11.3 Thin- Film...
... P (1940) A study of polymers III Technique ofmechanical tests of vulcanizates of rubber and plastics Rubber Chem Tech., 13, 904–917 Haward, R.N (1942) Extension and rupture of cellulose acetate ... full recovery of plastic deformation [8, 9] I NTRODUCTION 1.3 Molecular background Independent of the stress level or amount of deformation involved, the origin of the deformation of polymer materials ... mechanism in the range of temperatures and strain rates of interest A linear dependence of yield stress as a function of log strain rate can be observed over a large interval of strain rates and...
... of the mechanicalpropertiesof materials It is not intended to be a comprehensive review of all the different aspects ofmechanical properties; such a task would be beyond the capabilities of ... Inc 1 Overview of Crystal/Defect Structure and MechanicalProperties and Behavior 1.1 INTRODUCTION The mechanical behavior of materials describes the response of materials to mechanical loads ... macroscopic level of understanding of structure [Figs 16(a)–(d)] They are often unaware of the atomic and microstructural constituents that can affect the mechanical behavior of materials and of the role...
... number of atoms of core–shell nanowires are fixed to be 2524 The ˚ unit of the length is in a Table The optimal structural parameters of Si-core/Ge-shell nanowires Radius of core Outer radius of shell ... work is partially supported by the Fund of University of Science and Technology of China, the Fund of Chinese Academy of Science, and by NSFC with code number of 50121202, 60444005, 10574115 and ... about the basic trends in Young’s modulus of the Si/Ge core– shell nanowires can be helpful for understandings of the mechanicalproperties for other kinds of core–shell nanowires Acknowledgments...
... have desirable mechanicalproperties at an economical cost For this reason, the mechanicalproperties may be considered the most important of all the physical and chemical propertiesof high polymers ... t h e mechanicalpropertiesof polymers very complex if it were not for some general phenomena and principles that underlie a l l of these various properties and determine t h e outcome of various ... moderate rates of deformation, the amorphous polymer is soft and flexible and is either an elastomer or a very viscous l i q u i d , Mechanicalproperties show profound changes in the region of the glass...
... have desirable mechanicalproperties at an economical cost For this reason, the mechanicalproperties may be considered the most important of all the physical and chemical propertiesof high polymers ... t h e mechanicalpropertiesof polymers very complex if it were not for some general phenomena and principles that underlie a l l of these various properties and determine t h e outcome of various ... moderate rates of deformation, the amorphous polymer is soft and flexible and is either an elastomer or a very viscous l i q u i d , Mechanicalproperties show profound changes in the region of the glass...
... deformations Mechanical Propertiesof Carbon Nanotubes 297 Fig HREM images of bent nanotubes under mechanical duress (a) and (b) single kinks in the middle of SWNT with diameters of 0.8 and 1.2 ... number of experimental measurements of the Young’s modulus of nanotubes have been reported The first such study [71] correlated the amplitude of the thermal vibrations of the free ends of anchored ... nevertheless indicative of the exceptional axial stiffness of these materials More recently studies MechanicalPropertiesof Carbon Nanotubes 293 Fig Top panel: bright field TEM images of free-standing...
... measure of a material’s mechanical properties, and all students of Mechanics of Materials will encounter them often However, they are not without some subtlety, especially in the case of ductile ... measure of the internal forces within the material Much of Mechanics of Materials is concerned with elaborating this concept to include higher orders of dimensionality, working out methods of determining ... microstructure of the material Figure 1.1: The tension test One of the pivotal historical developments in our understanding of material mechanicalproperties was the realization that the strength of a...
... Figure Comparison of experimental modulus with calculated tensile moduli ESTIMATION OFMECHANICALPROPERTIESOF POLYMERS 1343 Data - calculated Temperature, K Figure Tensile modulus of polystyrene ... ESTIMATION OFMECHANICALPROPERTIESOF POLYMERS 1335 3e-04 ?c 2e-04 \ i h 2i aJ x le-04 Oe+00 PS AMS PC PPO POMS I 100 300 200 400 500 Temperature, K Figure Thermal expansion data of Roe and ... + dez (25) ESTIMATION OFMECHANICALPROPERTIESOF POLYMERS where the subscripts x , y , and z denote the stresses and strains in three principal directions In the case of a material being stretched...
... 32 Table 3–5 Summary ofmechanicalproperties and chemical compositions for steels from low-strength perimeter columns 40 Table 3–6 Summary ofmechanicalproperties and chemical ... Summary ofmechanical properties, chemical compositions, and relevant ASTM and Yawata specifications for steels from high-strength perimeter columns 45 Table 3–8 Summary ofmechanicalproperties ... 57 Table 3–11 Summary ofmechanicalproperties and chemical compositions, and specifications for truss steels tested 58 Table 3–12 Summary ofmechanical properties, chemical compositions...
... novel properties [11] Keeping this incentive in mind, the purpose of this paper is to provide an overview of the basic understanding of the mechanicalpropertiesof these materials A number of techniques ... A great deal of the early work on mechanicalpropertiesof nanocrystalline materials used the inert gas condensation technique One shortcoming is the possibility of contamination of powders and ... grains with approximately 500 nm size Mechanicalpropertiesof nanocrystalline metals and alloys In this section, we review the principal mechanicalpropertiesof nanocrystalline metals: yield stress,...