Materials Literature
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As one of the most appealing materials, graphene possesses remarkable electric, thermal, photoelectric and mechanic characteristics, which make it extremely valuable both for fundamental researches and practical applications. Nowadays the synthesis of graphene is commonly achieved by growing on metal substrate via che…
Gallium nitride (GaN) and its family of materials (including GaN, InN, AlN and their alloys) are known as the third generation of semiconductor, which has important applications in optoelectronics and microelectronics. In the structure of GaN-based high electron mobility transistor (HEMT) device, there is a relatively…
The surface polarization energy that arises from the difference in dielectric coefficient between the quantum dot (QD) and the background medium is investigated by the equivalent image charge method. A general expression for the bandgap of QD depending on the dielectric coefficient of background medium is presented by…
Fabricating functional submicrometer particles is difficult by conventional particle fabrication techniques that use top-down or bottom-up approaches. Pulsed-laser melting in liquid is a versatile technique for crystalline submicrometer spherical particles of various materials. Space-selective pulsed heating of partic…
Metallic thin films deposited on non-conductive substrates are widely used in areas like microwave absorbers, photovoltaic, packaging, electromagnetic shielding, and integrated circuits. From scientific and engineering point of view, measuring sheet resistance of metallic thin films is important. In this study, we dev…
Objective: The aim of this study was to explore the influence of outdoor weather conditions on subjective responses during physical activity.\nBackground: The largest difference between indoor and outdoor conditions is the existence of the sun. The heat load from the sun has an influence on the heat gain of the human…
The kesterite compound Cu2ZnSnS4(CZTS) is one of the most interesting materials for absorber layers of thin-film solar cells,not only because it is composed of earth abundant and non-toxic elements,but also owing to the fact that its absorption coefficient is high (on the order of 104 cm-1) and its optimal band gap is…
ABSTRACT With the introduction of glycidyl methacrylate (GMA) and allyloxy hydroxyl propanesulfonic salt (AHPS) to the waterborne polyurethane/polyacylate (WPUA) emulsion, a stable epoxy-modified waterborne polyurethane/polyacylate (EPUAS) composite emulsion with high solid content had been obtained. The structure and…
Tubular vacuum chamber assemblies made of aluminum, copper and stainless steel alloys will be used in the new Multi Bend Achromat (MBA) storage ring that is being developed at Advanced Photon Source (APS). Details of the new lattice magnet system design and ring impedance considerations continue to drive these vacuum…
The hydrogenated amorphous carbon (a-C:H) film has been known as a coating material that imparts improved biocompatibility to base materials and has been used for many clinical applications. Recent studies have revealed that hydrogen-free amorphous carbon (H-free a-C) on stainless steel (SUS) has beneficial antibacter…
We have fabricated alkali metal (Li, Rb, Cs) and alkaline-earth metal (Ca) intercalated bilayer graphene on SiC substrate, and characterized them by low-energy electron diffraction, angle-resolved photoemission spectroscopy, and 4-point-probe measurements. We observed a free-electron-like state in the center of the Br…
The rapid growth of waste causes adverse impacts on the environment therefore a good processing effort is required. One of the waste that has high selling value is electrical waste that is copper from the cable core. Currently the copper from the cable obtained by burning the bad impact of burning dioxin release and b…
The 5xxx series aluminum alloys are commonly used for structural applications due to their high strength to weight ratio, corrosion resistance, and weldability. This material system is a non-heat treatable aluminum and derives its strength from a super saturation of magnesium (3%>), and from cold rolling. While these…
In this article we consider the increase of the resource of wheelsets of cars and locomotives. We give general data on present research in the field of tribotechnical systems, and offer alternative variants of development of domestic tribotechnical systems for railway transportation, which can be useful to replace for…
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środkow MNiSW przeznaczonych na dzialalnośc upowszechniającą nauke (2018).
Spin transport properties of graphene non‐local spin valve devices are typically determined from Hanle spin precession measurements by using a simplified solution of the one‐dimensional Bloch‐Torrey equation which assumes infinitely long transport channels and uniform spin transport parameter. We investigate the effec…
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Din zaman yang serba canggih dan modern ini cat merupakan suatu produk yang banyak dipakai untuk melapisi permukaan suatu bahan dengan tujuan memperindah, memperkuat, atau melindungi dari suatu permukaan benda. Belum adanya aturan yang jelas mengenai komposisi perbandingan campuran thinner dengan vernish pada hampir s…
Hot deformation and restoration mechanisms in duplex stainless steels: Effect of strain rate
This paper is dealing about the possibility of using thermoplastic material as an inhibitor for solid composite propellant in a long period of time. A basic point in this consideration is an analysis of bond characteristics between the extruded PVC tube and cast HTPB/IPDI rocket propellant examined immediately after t…