Search results

Zhangc School of Mechanical and Manufacturing Engineering, The University of New South Wales, NSW 2052, Australia a a.pramanik@unsw.edu.au, bmei.liu@student.unsw.edu.au, cLiangchi.Zhang@unsw.edu.au Keywords: Silicon on sapphire; thin film; defects; residual stress Abstract.
When sapphire is used as a substrate, because of its high insulation property and low parasitic capacitance, it can provide lower power consumption, higher frequency and better linearity and isolation than the bulk silicon.
An SOS deposition process is complex and is influenced by many factors.
On the other hand, it has been reported that SOS wafers can also be prepared by a direct wafer bonding method [17], in which a thin silicon wafer is first bonded to a polished sapphire substrate and then is further thinned down to a required thickness (e.g., ≈ 10 µm) by mechanical grinding and chemical etching.
Residual Stresses Characterization A high level of residual stresses can affect the electrical and mechanical properties of a device based on the SOS technology [30].

Quantum theory provides the essential foundation for the understanding of the properties of electrons in atoms and molecules.
For intermolecular interaction, many factors were being considered in the calculation of the energy.
In practice, we have to rely on an approximate exchange-correlation (xc) functionals to assist the calculation of quantum mechanical formulation in Kohn–Sham density functional theory.
So that in this study we were checking out whether it affects the dihedral of peptides that interact with these metal ions.
However, as noted in the introduction, these small changes can still affect the conformational changes in the peptide globally and the long sequence will affect the 3D conformation so that it may make a little change to the function of the peptide itself.

They differ in obstacle and recovery characteristics from low-angle boundaries, which explains the special properties of ultrafine-grained and nanocrystalline materials with regard to strength, strain rate sensitivity and ductility. iii) Phase boundaries in Ni-base superalloys enhance the strengthening by hard phases with strengthening by dense dislocation networks serving to reduce coherency stresses.
However, the long-range stress fields are not affected by formation of a finite wall (which may be regarded as a dipole of two disclinations).
Phase boundaries are existing in the vast majority of industrial materials which contain particles of foreign phases for reasons of strength or functional properties.
The steady-state deformation rate is overestimated in the limiting case of low stresses σ≈10−5G by a factor of about 50.
McQueen in: "Dynamics of recovery and recrystallization", Aluminium Alloys, Their Physical and Mechanical Properties - Proceedings ICAA5, ed.

The integrity of such welds is influenced by many interacting factors among which the variation of material properties, thermo-mechanical loads and weld induced defects and residual stresses.
• Good quantitative agreement between neutron and synchrotron data was found in the heat affected zone in the ferritic steel.

Conditions of the smelting technological process with the use of VIM method are developed in detail for specific metals and alloys as well as their required properties.
However, many studies have shown that this value depends on a lot of factors, i.e. density and viscosity of the metal as well as the electrical parameters of furnace operation, including current frequency, device power and current intensity in the induction coil [7, 8].
The contribution of resistance related to evaporation to the overall process resistance depending on the pressure Conclusions Based on the experiments, it can be demonstrated that both the process temperature and the working pressure of the device significantly affect aluminium elimination from the Ti-Al alloy during smelting in a VIM furnace.
Blacha: Influence of the geometry of the arrangement inductor-crucible to the velocity of the transport of mass in the liquid metallic phase mixed inductive, Archives of Civil and Mechanical Engineering 11 (2011) 171-179

The rate at which they expire depends on a number of factors.
Even though it looks like a very small amount of power consumption percentage, however, it could affect the extended range of the vehicle.
Architecture in Fig. 3(a) is conventional driveline with clutch to connect or disconnect the power from electric motor while configuration in Fig. 3(b) uses single-gear transmission without clutch to reduce size and weight of mechanical transmission in order to simplify the drive train control.
The control properties, available actions and states are initially defined for the purpose vehicle system.

However, liquid capillary filling in microfluidic channels is a complex process and depends on many different factors, including the channel geometry, the flow pressure [4], the liquid surface tension [5], the contact angle at the channel surface [6], and so on.
Microfluidic devices are commonly fabricated using polydimethylsiloxane (PDMS) since PDMS has mechanical softness, optical transparency and good manufacturability [10, 11].
These suspensions are stable and preserve their properties at extreme temperatures and over a long period of time.
The operating temperature has a critical effect on the viscosity of ferrofluids, and therefore also affects the flow velocity.

Introduction The most promising Nb/Nb5Si3 systems superalloys are attractive for the manufacture of the new turbine blades because it is chemically stable to 1660°C and exhibits very good mechanical properties both at room and elevated temperatures [1,2].
But the critical value is affected by many factors as Ti content and difficult to be determined.

Introduction β-Sialon (Si6-zAlzOzN8-z, 0 < z ≤ 4.2), a solid solution of β-Si3N4 with Si-N bonds partially substituted by the Al-O bonds, possesses a hexagonal lattice structure and elongated morphology [1], which renders β-Sialon many excellent properties, such as high mechanical strength, high fracture toughness, chemical inertness, and good thermal shock resistance and wear resistance.
It can be seen that the on-set oxidizing temperature of β-Sialon was greatly affected by the heating rate.
The oxidation activation energy of the as-prepared β-Sialon powders was calculated by a differential isoconversional method using the Friedman-Reich- Levi model, (4) Where α is conversion ratio, β is heating rate, E is oxidation activation energy, A is preexponential factor, f(α) is the differential form of the mechanism function, and dα/dT is degradation rate.
The standard differential form of the non-isothermal dynamic equation (Eq. 6) was further used to determine the mechanism function of the oxidation, (6) Where α is conversion ratio, β heating rate, Ea activation energy, A preexponential factor, F(α) integral form of the oxidation mechanism function, and P(u) temperature integral.

Compared to other motors with the same motor speed, the differences are small size, light weight, easy maintenance, high efficiency (up to 97%), high power factor and so on.
In a wide range of speed, the torque and speed can be flexibly controlled, and the motors have high starting torque and low start-up power of mechanical properties, torque-speed characteristic well.
The vector control is easy to be realized, to some extent, to ensure detection accuracy, but the parameters of the motors are used in the process of state reconstruction, motor parameter changes caused by environmental changes will affect the accuracy of flux observation.
Power Automatic Draging Control System-Motion Control System.Beijing: Mechanical Industry Press,2003.