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Plasmonic metamaterials based on assemblies of metallic nanoparticles (MNPs) have finely tunable optical properties, which can be tailored for different applications, from sensing to waveguiding [1], [2]. Nanorods and nanorod arrays have been widely studied both theoretically and experimentally. In addition to the transverse and longitudinal localised surface plasmon resonances (LSPR), when arranged...
We report on the epitaxial growth, fabrication, and characterization of full-color InGaN/GaN dot-in-a-wire nanoscale LEDs on Si(111), which can exhibit an internal quantum efficiency of ~ 45% and negligible saturation up to ~ 300 A/cm2.
Today acoustic microscopy transducers are based on zinc oxide, ZnO, films as piezoelectric material. Especially in the GHz range the insertion loss of existing ZnO transducers has to be improved for better imaging. The motivation for this work was to substitute the ZnO by the piezoelectric material lead zirconate titanate, PZT, with better electro mechanical properties. Novel technologies of sol-gel...
This paper reports well-controlled nanonail array with Si bodies and stacked SiO2 heads for biomedical nano-extractions and protein localizations. The nanonails with well controlled dimensions are fabricated by multi-crossed spacer technology which we have developed. The nail bodies with the minimum diameter of 24 nm and nailheads with 11 nm tip-radius are successfully achieved. 100 nm spacing and...
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