The early stage sliding contact fatigue behavior of nanocrystalline materials, with average and total range of grain sizes well below 100 nm, was studied. The evolution of friction and damage during repeated sliding contact in the nanocrystalline metals and alloys was systematically compared and contrasted with that in ultrafine-crystalline and microcrystalline materials so as to develop a broa...

We present a simple method to measure the radiative and nonradiative recombination rates of individual fluorescent emitters at room temperature. By placing a single molecule successively close and far from a dielectric interface and simultaneously measuring its photoluminescence decay and its orientation, both the radiative and nonradiative recombination rates can be determined. For CdSe nanocr...

Herein we report a general synthesis strategy for metallic nanocrystals in a two-phase liquid-liquid system, which involves a quite fast nucleation stage overlapped with the growth stage within 10 min.

The performance of colloidal CuInS2/CdS nanocrystals as phosphors for full-spectrum luminescent solar concentrators has been examined. Their combination of large solar absorption, high photoluminescence quantum yields, and only moderate reabsorption produces the highest projected flux gains of any nanocrystal luminophore to date.

.............................................................................................................. i Acknowledgements .......................................................................................... iii

The development of Fe73.5Si13.5B9Nb3Cu1 ~FINEMET! by Yoshizawa et al. and Fe88Zr7B4Cu1 ~NANOPERM! by Inoue et al. have shown that nanocrystalline microstructures can play an important role in the production of materials with outstanding soft magnetic properties. The FINEMET and NANOPERM materials rely on nanocrystalline a-Fe3Si and a-Fe, respectively, for their soft magnetic properties. The mag...

.................................................................................................................................148 Autobiographical Statement.................................................................................................150