Physical Preparation Of Noble Nanoparticles And Basic Rearch On Its Sensoring Properties

It is a hot issue to design and synthesize nanomaterials with controlled compositions,structures and morphologies according to the application requirements. The metalnanoparticles with tunable surface plasma resonance (SPR) were intensely attractive for theirunique optical properties and their applications in biomedicine, catalysis, electronics,communication and other fields. The implementation process is relatively complex innanoparticles preparation. There are still large deficiencies in the processing efficiency andprocessing costs. its production cost is relatively high when Prepared in the self-assembledtemplate. The production efficiency, especially for the small size template preparation is thelow efficiency.For deficiencies in the preparation process the existed in nano self-assembly described above,it is discussed in this paper that low-dimensional periodically ordered nanostructures which isin application of high sensitivity biochemical sensorsthe field and the preparation and processof basic research. It is studied that the physical preparation of the precious metals silvernanoparticles, self-assembly process and its biochemical sensing applications foundation.Coagulate using Inert Gas Condensation deposition techniques prepared many kind of size ofthe silver nanoparticles the arrang is from2nm to8nm, this preparation process is a physicalpreparation, and belong to the controlled preparation techniques of the nano-particle size. theuse of plasma technology achieve low-dimensional nanomaterials self-assembly process andthe low-cost, large area ordered self-assembly process. Meanwhile, it is analysis edtheoretically that the mechanism of the physical preparation of the precious metal silvernanoparticles and principle of nanoparticles self-assembly process based on plasma process.Inert Gas Condensation process is used as the deposition technique the preparation of preciousmetal silver nano particles with. Through adjusting the time of preparation, it is studied thatthe distribution of the particle size and density of the noble metal which is deposited on a silicon substrate of silver nanoparticles. By scanning electron microscopy morphologycharacterization testing, different sputtering time is analysised about the particle size anddensity distribution of silver nanoparticles. Silver nanoparticles of different sizes wereprepared by adjusting the power, gas flow and other parameters. using an atomic forcemicroscope, characterization test of the particle size of the silver nanoparticles is done.Different structure of silver nanoparticles is prepared using plasma technology, analysis anddiscussion of theoretical differences have been done with the morphology characterization ofthe scanning electron microscope.Finally, comparison test of the effect of SERS and SEF of silver nanoparticles and silvernanoparticles structure prepared by using Inert Gas Condensation deposition techniques andplasma prospectivly. Combined SEM and AFM topography characterization results, how thedifferent parameters influence the precious metals silver nanoparticle preparation process.Through the comparative analysis of of the different particle size and density of silvernanoparticles study the influence of the substrate biochemical sensing effect, it is studied thatpreliminary exploration of precious metals silver nanomaterials based on the biochemicalsensing applications.In this paper, we use the physical preparation methods to explore manufacturing technologyof the precious metals silver nanoparticles of the low cost, ordered and large area. It suppliesthe basis of theories and key technologies for the manufacture of low-dimensionalnanostructures engineering. By adjusting the key parameters of the nano-structures,biochemical optimization is achieved for the nanocrystalline particles-sensitive characteristicsof the self-assembled structure.