Dragan Mihailovič

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We present Raman scattering and scanning tunnelling microscopy (STM) measurements on hydrogen plasma etched single-wall carbon nanotubes (SWNTs). Interestingly, both the STM and Raman spectroscopy show that the metallic SWNTs are dramatically altered and highly defected by the plasma treatment. In addition, structural characterizations show that metal(More)
We consider finite-k electron-phonon coupling appropriate for a superconductor with a very short coherence length and local intersite pairs. From group theoretical analyis we find that k 6= 0 phonons can couple to degenerate electronic states in La2−xSrxCuO4 and a Jahn-Teller-like distortion is found to be operative for Eu and Eg-symmetry O states.(More)
We demonstrate a novel electrochemical sensor for highly sensitive detection of natural double-stranded deoxyribonucleic acid (dsDNA) based on thionin (Th) attached to Mo(6)S(9-X)I(X) nanowires (MoSI NWs) self-assembled on a gold electrode. The sensing detection is based on a decrease of the voltammetric response of the immobilized Th due to the binding of(More)
Hidden states of matter may be created if a system out of equilibrium follows a trajectory to a state that is inaccessible or does not exist under normal equilibrium conditions. We found such a hidden (H) electronic state in a layered dichalcogenide crystal of 1T-TaS2 (the trigonal phase of tantalum disulfide) reached as a result of a quench caused by a(More)
We use ultrashort intense laser pulses to study superconducting state vaporization dynamics in La2-xSrxCuO4 (x=0.1 and 0.15) on the femtosecond time scale. We find that the energy density required to vaporize the superconducting state is 2.0+/-0.8 and 2.6+/-1.0 K/Cu for x=0.1 and 0.15, respectively. This is significantly greater than the condensation energy(More)
We demonstrate the use of a novel electrochemical sensing platform based on aptamer conjugated Mo(6)S(9-x)I(x) nanowires (MoSI NWs) for the highly sensitive detection of the blood clotting enzyme thrombin. MoSI NWs nanowires were self-assembled on a gold electrode to which thrombin binding aptamers were covalently attached. The modification and(More)
The coupling of phonons with collective modes and single-particle gap excitations associated with one- (1d) and two-directional (2d) electronically driven charge-density wave (CDW) ordering in metallic RTe3 is investigated as a function of rare-earth ion chemical pressure (R=Tb,Dy,Ho) using femtosecond pump-probe spectroscopy. From the T dependence of the(More)
We report on the synthesis, structure, and self-assembly of single-wall subnanometer-diameter molybdenum disulfide tubes. The nanotubes are up to hundreds of micrometers long and display diverse self-assembly properties on different length scales, ranging from twisted bundles to regularly shaped "furry" forms. The bundles, which contain interstitial iodine,(More)
Organic ferromagnets, which exhibit exchange interactions between unpaired electrons in pi-orbitals, are rare, and the origin of ferromagnetism in these compounds has so far remained unexplained. Tetrakis(dimethylamino)ethylene-fullerene[60] (TDAE-C60) shows a transition to a ferromagnetic state with fully saturated s = 1/2 molecular spins at the relatively(More)