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Fabrication and evaluation of Ag nanoparticles (NPs)-loaded hierarchical ZnO nanostructure (Ag/ZnO) and their acetylene (C2H2) gas sensing properties have been studied. Physical and structural characterisations reveal the formation of high-purity, standard crystalline hierarchical ZnO nanostructures and Ag/ZnO composites. Gas sensing characteristics of the synthesised materials were carried out within...
The purpose of this paper is to develop a sensitive and low cost optical sensor for screening ametryn using bare gold nanoparticles (Au NPs). Based on the distance-dependent optical properties of Au NPs, the presence of ametryn could rapidly induce the aggregation of gold nanoparticles, thereby resulting in red-to-deep blue color change. The concentration of ametryn was determined with a limit of...
Although NMR has the ability to investigate biological systems non-destructively, its low sensitivity primarily has hampered their investigation compared to other analytical techniques. Therefore, optimizing radio frequency (RF) coils to improve sensitivity do offer benefits in MR spectroscopy (MRS). Sensitivity may be improved for mass- and volume- limited samples if the size of the detection RF...
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