background and objectives according to islamic doctrines, the use of gold for men has been banned. in general, any advised subject in islam is useful for the body and what has definitely forbidden for a man is definitely harmful for him although its reasons have not been exactly specified. however, muslims believe that there is certainly a sound reason behind this prohibition. this issue was st...

We propose a gold modified bow-tie plasmonic nano-antenna, which can be suitably used in combination with total internal reflection fluorescence microscopy. The plasmonic nano-antenna, supporting well-separated multiple resonances, not only concentrates the total internal reflection evanescent field at the deep subwavelength scale, but also enhances fluorescence emission by the Purcell effect. ...

The properties of metallic clusters of various shapes, on the nanometer length scale, can be dramatically different from the corresponding bulk material due to their very large surface-to-volume ratio. The unique optical and mechanical properties of such nanoclusters hold great promise for the development of nanotechnology. Gold nanoclusters, for example, have found application in such diverse ...

Nowadays electronic structure theory gives a microscopic foundation of material science and provides atomistic simulations in which electrons are treated as wavefunction within quantum mechanics. An example is given in the upper left panel of Fig.1. For years, we have developed fundamental theory and program code for large-scale electronic structure calculations, particularly, for nano material...

In this research, sensing performance of mono and bimetallic nanophotonics SERS sensors gold-silver nano-columns for the detection chlorpyrifos was investigated. For optimum substrates Gold-silver/nano-column surface-enhanced, Raman scattering (SERS) achieved with silicon substrate. By combining Ag activity Au chemical stability Si large field enhancement, Au-Ag/nano-columns substrate revealed ...

Abstract The effects of engineered nanoparticles (ENPs) in living organisms are described in a myriad of articles. Most of the literature on this topic is devoted to plants of different gender and species. Studies from laboratories and greenhouse facilities highlight effects on chlorophyll production, plant growth, stress enzyme activities, phytotoxicity, cytotoxicity, and genotoxicity. With fe...