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Journal of New technology and Materials

“Journal of New technology and Materials”(JNTM) is an international peer-reviewed journal that publishes high quality original works on the Material sciences (physics, chemistry and life sciences) and engineering. It covers the aspect of materials science and engineering in all forms, particularly materials associated with new technologies (nanoscience and nanotechnology).
JNTM Journal provides a platform for researchers, students and industrialist to submit on-going research and developments in material and technology areas. Authors are solicited to contribute to the JNTM journal by submitting articles that illustrate research results and projects that describe significant advances in all areas covered by our scientific journal (JNTM).

Articles de cette rubrique

Study of the performance of ballistic carbone nanotube FETs

Using a two-dimensional (2-D) simulation, we study the impact of varying the nanotube diameter and gate oxide thickness on the performance of a ballistic nanoscale carbon nanotube field effect transistor (CNTFET). Our results show that the nanotube diameter influences the ION/IOFF current ratio ; the drain induced barrier lowering (DIBL), the subthreshold slop as well astransconductance and drain conductance. We also show that these device characteristics are affected by the gate oxide thickness. Thus, nanotube diameter and gate oxide thickness must be carefully taken into account when designing robust logic circuits based on CNTFETs with potentially high parameter variability.

Optical and structural study of plastic deformation of single crystals

CdTe pure and alloyed with some isoelectronic impurities was found in front of more than twenty years as very promising in optoelectronics. The effectiveness of components based on these materials is strictly related to their quality. It is in this context that our work. The objective in this study is to see the effect of plastic deformation of crystals of CdTe and CdZnTe on crystallographic and optical properties. The investigation methods are X-rays as a means of crystallographic characterization, measurements of UV-Visible spectrophotometry, as means of optical characterization. The main results show that : the best crystal (CdZnTe) before deformation, which shows the highest dislocation density after deformation and increased optical gap,which decreases for CdTe. The effect of dislocations on the optical properties is characterized by a shift of the absorption edge relative to the undeformed state, due to the creation of acceptor centers, which are the neutral hole CdTe and Cd decreased concentration of Zn atoms substituting Cd atoms

Treatment of commercial aluminum by Nd:YAG laser

In this work, two types of commercial aluminum alloys (industrial and recovered aluminum) are studied. The surface is irradiated by Nd : Yag laser (λ = 532 nm, with a pulse duration of 15 ns and an energy of 50 mJ). The experimental results show that the hardness profile can be divided into three regions. The melted area is the hardest region, Then, the hardness decreases sharply in the interface region between the melted area and the heat-affected zone.

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