Materials Literature
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We present a series of baseline techniques for inspection, cleaning, repair, and native defect mitigation of extreme ultraviolet (EUV) masks. Deep-ultraviolet inspectors are capable of inspecting patterns down to about 45 nm in pitch on wafer. Cleaning methods involving both chemical and physical forces have achieved…
This study focused on the effects of minor alloying elements (Si, Pt), trace SO2, and Na2SO4 deposit on oxidation and 900°C sulfate-deposit-induced hot corrosion behavior of Al2O3-scale forming alloys. In the first part of this study, the effects of Si, Pt and Si+Pt on the oxidation and hot corrosion behavior of γ΄-Ni…
Almost all on‐site measured partial discharge (PD) signals in cable networks suffer from the contributions of reflected PD pulses and noise which both decrease precision of measurement. This study explores an online digital signal conditioning procedure for PD signals being measured under noisy conditions in cable net…
We have revealed topological defects (TDs) of the angle of optical indicatrix (OI) orientation in a glass Li2B4O7 sample, which originate from the specific spatial distribution of optical birefringence caused by residual mechanical stresses. It has been found that the strength of TDs of the OI rotation angle is equal…
Manufactured products are customarily made with materials having ‘perfect’ surface qualities, such as uniformity, flatness, glossiness, repetition etc. They are generally devoid of defects. Although the aesthetic of ‘material perfection’ prevails, this is not to say that alternative aesthetics based on ‘material imper…
North Carolina State University Theses Civil Engineering.
Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2013)
Newly developed Zr–45Ti–5Al–3V alloy were irradiated by 84 MeV carbon ions with doses of 4 * 1015 ions/cm2 and 12 * 1015 ions/cm2, respectively. XRD, SEM, TEM, SAD and tensile tests were performed to study the microstructural evolution and mechanical properties modification upon high energy carbon ion irradiation. XRD…
Atomic flux divergence (AFD) near a right-angled corner composed of dissimilar metals is theoretically analyzed in the present paper. A basic model of layered interconnect lines involving a right-angled corner is constructed. A two-dimensional electromigration (EM) problem near the corner is analyzed by treating the a…
We demonstrate numerically the ability to displace a magnetic domain wall (DW) by remote spin current injection. We consider a long and narrow magnetic nanostripe with a single DW. The spin-polarized current is injected perpendicularly to the film plane through a small nanocontact which is located at certain distance…
We have succeeded in growing single crystals of Tm6Cr4Al43 by the Al self-flux method. A single crystal structure analysis has confirmed that the grown single crystals have the hexagonal close-packed Ho6Mo4Al43-type crystal structure (P63/mcm, #193), which consists of stacking peanut-shaped cages with two Tm ions insi…
We have proposed a continuous-index system to mimic an arbitrary “potential well” for realizing versatile manipulations on acoustic waves within a broadband. An analytical description of the acoustic propagation in the system is developed, and its validity is verified by using full-wave simulation. Both the theoretica…
In this work, the properties of solvent and solvent-free electrically conductive adhesives (ECAs) in four curing manners and after solder reflows are investigated for multi-chip module applications. The curing behaviors and thermal degradation of solvent and solvent-free ECAs are also studied by differential scanning…
Tunnel magnetoresistance in Sr2FeMoO6 based tri-layered structure was studied at room temperature. The Sr2FeMoO6/SrTiO3/Sr2FeMoO6 tri-layered structure was grown by pulse laser deposition on STO buffered Si(100) substrate. The X-ray diffraction and Micro Raman studies confirm the polycrystalline phase formation of SFM…
Ti–Al–Si–N nanocomposite coatings were deposited on Si(111) and cemented carbide substrates by ion source enhanced magnetron sputtering. The diffraction intensities of (111) decreased while whose of (200) increased when the ion source voltage was increased from 400 to 800 V. The friction coefficient of Ti–Al–Si–N nano…
ABSTRACT The superior properties of natural rubber (cis-1,4-polyisoprene [NR]) are a function of its structure and composition, properties that still remain a mystery and that are irreplaceable by any synthetic rubber. NR from guayule (Parthenium argentatum) has been gaining special interest for its hypoallergenic pro…
In this work, a multi-site chain model was incorporated into the polymer reference interaction site model to investigate the structure and properties of atactic polystyrene (aPS) melt and the structural correlations of dilute spherical nanoparticles dissolved in aPS melt. The theoretically calculated X-ray scattering…
The energy dissipation capacity of the NiTi alloy was evaluated as part of a series of shake table tests. A superelastic damper was developed to take advantage of the hysteretic energy dissipation associated with this type of shape memory alloy. Each device was tested at different intensity levels. A vertical steel ca…
Steam turbine is now facing strict market demands for further improvements in efficiency. To meet such demands, thrust bearing with high specific load makes a huge contribution to improvements in efficiency. Because the smaller thrust dummy diameter of rotor can be adopted and leakage flow through the thrust dummy can…
A biosynthetic human insulin precursor displayed enhanced susceptibility to deamidation at one particular site. The present study was undertaken to monitor progress of precursor deamidation at successive manufacturing stages. MALDI-TOF/TOF MS in combination with controlled endoproteinase Glu-C and endoproteinase Asp-N…