[en] Nano Pd–Au particles have been electrochemically fabricated utilizing ionic liquid as green electrolyte (1-Butyl-3-methylimidazolium tetrafluoroborate). Nano Pd–Au particles modified glassy carbon electrode (GCE) and indium tin oxide coated glass electrodes were examined using atomic force microscopy, field emission scanning electron microscope and X-ray diffraction studies. Electrodeposited nano Pd–Au particles' average diameter was found as 33 nm. Nano Pd–Au particle modified GCE was electrochemically active and stable in various pH solutions. The proposed nano particle modified GCE reduces the over potential and shows the well defined oxidation peaks for the detection of epinephrine and simultaneous determination of dopamine and uric acid (in pH 7.0 phosphate buffer solution) using cyclic voltammetry and differential pulse voltammetry.
Journal
[en] This study reports the formation of ultra-thin cobalt nitride (CoNx) films on a Co/ZnO(002) crystal by low-energy ion sputtering of nitrogen in an ultrahigh vacuum system. The CoNx film formed during ion bombardment in which the nitrogen plasma (N+) results in both sputtering and implantation in the formation process of CoNx, especially for the Co adsorbed layers. Auger electron spectroscopy analysis shows that the composition ratio x as a function of sputtering time was highly related to the N+ ion energy that was varied from 0.5 to 2 keV. The composition ratio x of CoNx films is inversely proportional to the ion energy. Low-energy ion sputtering is possible to fabricate ultra-thin CoNx films and to adjust their chemical compositions.
Journal
[en] In this note, we consider so-called “Higgs branch localization” for four-dimensional N=2 field theories on a 4D ellipsoid. We find a new set of saddle point equations arising from the additional Higgs branch deformation term, whose solutions include both Higgs branch and BPS instanton-vortex mixed configurations. By evaluating the contour integral, we also demonstrate that the ellipsoid partition almost factorizes into purely b- and b"−"1-dependent parts, using SQCD as an explicit example. We identify various factorized parts with the ellipsoid partition function of two-dimensional N=(2,2) SQCDA, which is precisely the vortex world volume theory. We also give a physical interpretation for the non-factorizable parts and discuss future directions
Journal
Progress of Theoretical and Experimental Physics; ISSN 2050-3911; 
; v. 2016(1); [27 p.]
; v. 2016(1); [27 p.]