Materials Literature
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The transmission and reflection coefficients of graphene surface waves, owing to the discontinuities of its substrate, are systematically studied and numerically computed in this paper. In essence, the propagation properties of these graphene-supported waves are theoretically extracted, revealing their strong dependen…
Honors (Bachelor's)
In this paper a study on the magnetostrictive-piezoelectric composite material with different configuration in a variety of external magnetic field changes was presented. An experimental setup for investigation of properties of magnetostrictive-piezoelectric materials was prepared. The hybrid structure was made of mag…
Infrared spectroscopy provides chemical information of biomolecules by detecting their vibrational fingerprints. Here, we use graphene plasmons to enhance infrared absorption and to demonstrate a tunable biosensor with high sensitivity for label-free and chemically-specific detection of protein monolayers. We show tha…
Stretchable wires and electrodes were printed on a textile substrate using a polyurethane-based conductive paste with silver fillers loading. Variation in their electrical resistivity was examined during a cyclic uniaxial tensile test at 10 % strain. The resistivity decreased to approach an equilibrium value when the…
The synthesis of new generation radars by exploiting the Material-by-Design (MbD) paradigm is addressed. The electromagnetic properties of the media employed in the engineered device are considered as an additional degree-of-freedom (DoF) of the synthesis problem in order to fulfill conflicting user-defined constraint…
We explore the electromagnetic response of ultrathin metasurfaces realized by densely-packed arrays of graphene strips. We analyze various topologies of propagation bands supported by this structure, ranging from the canalization regime found at a few terahertz (THz), hyperbolic responses present at a few dozens of TH…
The electromigration test of the microbump interconnects with Cu/Cu6Sn5/Cu structure is reported in this study. This Cu6Sn5 intermetallic compound layer was single-crystal like. The diameter of the microbumps in die-to-die stacking was 30 µm. Test vehicles were applied by a current density of 2.2×105 A/cm2 and settled…
The research reported in this thesis broadly consists of four parts: the first part has provided the detailed description of the materials used and experiments conducted during the research. The second part presents the characteristics of the epoxy composi tes reinforced with short palmyra fibers (SPF) in regard to th…
This paper presents the UTD-type solution for the electromagnetic scattering from a periodic structure, analogous to the conventional UTD solution for the scattering from electrically large scatterers. The solution was built up based on Kirchhoff approximation of equivalent currents from a unit cell, within which the…
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Negative group delay is one of the anomalous characteristics of the metamaterial, and can be used to compensate the group delay of systems and is applicable to signal processing devices. In this paper, to achieve negative group delay with not only wide-band characteristics but also low-insertion loss, we newly propose…
The electrochemical corrosion is a spontaneous process that causes deterioration or destruction of aninstallation or pipes, shortening therefore the useful life of the same ones. So, it is necessary to know themechanism of electrochemical corrosion that is developed, and subsequently monitored the corrosionrate in the…
FinFET is regarded as one of the most promising device structure for future scaling-down demands. However, heat dispassion is a severe problem for the device performance and reliability in nano-scale FinFETs. Germanium (Ge) is a novel channel material with its high carrier mobility, especially for PMOSFET. However, th…
A simplified circuit-model approach is presented in this work to analyze the behavior of a novel broadband varactor loaded phasing line, specifically designed to improve the frequency performances of aperture-coupled reflectarray cell, and able to offer a useful degree of frequency agility. The proposed approach provi…
Recently, there have been increasing interests in controlling and manipulating surface wave propagation based on metasufaces ranging from microwave to optical frequencies. Despite this, a general design tool, linking metasurfaces with classic EM theory of surface waves is missing. The aim of this paper is to present a…
In this study, we used a simple one-step solution-immersion process to rapidly synthesize superhydrophobic Cu coatings on galvanized iron substrates. Scanning electron microscope (SEM), and water contact angle measurements have been performed to characterize the morphological features, chemical composition and superhy…
On behalf of the Organizing Committee, it is my great pleasure and privilege to welcome you to the 2016 International Conference on Electronics Packaging (ICEP2016) to be held from April 20 – 22 in Sapporo, Japan.
In July 2016, the Directive 2013/35/EU will become in force posing new requirements on European Union (EU) employers to evaluate the exposure of workers to electromagnetic fields (EMFs). Implementation of these requirements is a significant challenge and could lead to a disproportionate burden for the EU economy. Curr…
Hard coating film on the polyethylene terephthalate (PET) substrate was manufactured by using Roll-to-Roll (R2R) printing process. Quality of the coated film characteristics, such as thickness and surface roughness, are investigated by the scanning electron microscopy and the atomic force microscopy. Process parameter…