Learn The Process Of Gold Nanowires Synthesis
Gold nanowires which have a well defined crystallographic surface can be used as a model system for studies like plasmonic waveguides and Raman spectroscopy. Many methods are observed for making gold nanowires and these gold nanowires are polycrystalline in nature and they also have a less defined surface, the gold nanowires synthesis is limited to those either with very small diameter or very large diameter.
- Materials and methods
You need to use reagent, also you should determine the size of the particles. At first a threshold is determined to discriminate object of interest from the background in surrounding which is based on their gray values. The groups of pixels which are connected a threshold is fitted as ellipsoids with major and minor axis.
Procedure for Gold Nanowires synthesis
You take all the reagents, solution and catalyst which is needed. The solution should be stirred thoroughly. There would be a molar reaction between HAuCl4 and MSA and it is adjusted by an appropriate amount. The reaction is very fast , the color of the solution changes from pale yellow to colorless to purple to red, this color is the typical color of colloidal solution of Gold Nanoparticles and the particles have size more than 10 nanometers.
- Result for the procedure
In the experiment the concentration of citrate and Au in the solution is measured, the reaction temperature is also noted and studied. Synthesis process is always conducted both under higher or lower temperature and longer the reaction time; the reaction process would speed up. Average particle diameter gets changed during the reaction and there are different morphologies for golf Nanoparticles with different solution/gold molar ratio via reduction method. Studying this reaction is very complicated. The application of the nano particle decides which product has to be taken, so understand the synthesis procedures.