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| 1 | The impact of process variations on input impedance and mitigation using a circuit technique in FinFET-based LNA显示文摘The effect of process variations of a FinFET-based low noise amplifier(LNA) are mitigated by using the device in an independently driven mode,i.e.an independently driven double gate(IDDG) FinFET.A 45 nm gate length IDDG FinFET-based cascoded LNA,operating at 5 GHz,is designed and studied to assess the impact of process variation on the LNA performance metrics such as input impedance,gain and noise figure.Four geometrical parameters,gate length,channel width,gate oxide thickness and fin width,and one non-geometrical parameter,channel doping concentration,are considered in the study.The effect of these variations on the input impedance(the desired value is 50 Ω purely real) of the LNA is compensated by the second gate bias of the IDDG FinFET. | D.Suresh K.K.Nagarajan R.Srinivasan | 2015 | Journal of Semiconductors2015，36，4： | 2 |
| 2 | Incorporation of europium (Ⅱ) nanostructures into the channels of mesoporous silicon oxy-nitride for enhanced photoluminescence显示文摘Divalent europium(Ⅱ)-doped mesoporous silicon oxy-nitride materials, as a novel type of nanoscopic photoluminescent material, are studied in which the optically active luminescent centers are isolated within the pores, Colorless and transparent blue emitting luminous Eu^(2+)-doped mesoporous silicon oxy-nitride materials were prepared from mesoporous silica via impregnation, nanocasting and nitrogen-assisted carbothermal reduction and nitridation method. The morphology and porosity of the silica remain unchanged during the synthesis process as revealed by SEM images and by nitrogen sorption studies. Photoluminescence studies reveal a strong blue emission band for Eu^(2+) centered at 425 nm with a quantum efficiency of 47%. The luminescent intensity is greatly influenced by the amount of co-dopant, Al^(3+) ions. | D.Suresh M.Yamashita T.Akai | 2018 | Journal of Rare Earths2018，36，5： | 0 |
| 3 | Rauvolfia serpentina-Mediated Green Synthesis of CuO Nanoparticles and Its Multidisciplinary Studies显示文摘Copper oxide nanoparticles(Cu O Nps) were successfully synthesized by solution combustion method using aqueous leaf extract of Rauvolfia serpentina as a fuel. The structure and morphology of the Cu O nanoparticles(Nps) were characterized by powder X-ray diffraction(PXRD), UV–visible spectroscopy(UV–visible), scanning electron microscopy(SEM), transmission electron microscopy(TEM), etc. The PXRD patterns reveal the formation of monoclinic phase with crystallite structure. SEM images indicate that the particles have sponge-like structure being highly porous and agglomerated with large surface area. The average crystallite sizes were found to be in the range of 10–20 nm by Scherrer's method. The Cu O Nps size was further confirmed by TEM. Further, Cu O Nps exhibit good photocatalytic activity for the photodegradation of trypan blue dye, indicating that it acts as a promising semiconducting material. The antibacterial properties of Cu O nanoparticles were investigated against pathogenic bacterial strains, namely Gram-ve Escherichia coli(NCIM-5051) and Pseudomonas desmolyticum(NCIM-2028) and Gram ?ve bacteria Staphylococcus aureus(NCIM-5022) using the agar well diffusion method. | K.Lingaraju H.Raja Naika K.Manjunath G.Nagaraju D.Suresh H.Nagabhushana | 2015 | Acta Metallurgica Sinica(English Letters)2015，28，9： | 0 |
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