Economy, Sci & Tech

Raman Spectroscopy Helps Decipher Nanomaterial properties

Raman Spectroscopy Helps Decipher Nanomaterial propertiesRaman Spectroscopy Helps Decipher Nanomaterial properties

Researchers in Shiraz University and Institute for Research in Fundamental Sciences have studied links between Raman spectroscopy frequencies and the properties of nanostructures.

 “Recent advances in nanotechnology have helped synthesize nanostructures with different properties and shapes, which include fullerenes, multi- and single-walled carbon nanotubes, graphene sheets, nanoparticles, nanowires, etc.,” a statement released by the headquarters for the Development of Nanotechnology reads, Mehr News Agency reported.

One of the most important concerns for research literature after developing nanostructures is identification and estimation of their properties.

Esmaeil Qavanlou, senior researcher of the paper titled “Analysis of radial breathing-mode of nanostructures with various morphologies: a critical review,” told the headquarters that the sheer size of the structures made measurement of its properties through direct methods very difficult or extremely expensive.

“Therefore, finding simple and cheap methods to estimate the properties gains importance. Our paper reviewed an empirical method for the identification of different nanostructures, with results making the determination of the mechanical properties of nanomaterial possible through a cheap method,” he said.

 “An effective experiment to identify nanostrucutes is Raman spectroscopy and its important outcome is the frequency of Radial Breathing Mode (RBM), which helps measure the size and properties of the material. Studies in literature have addressed the determination of carbon nanotubes frequency, with some concluding that only in nanotubes such frequencies are detectable, while the vibrations have been detected in Raman spectroscopy of other nanostructures as well.”

Qavanlou noted that based on this premise, they studied the vibrations of nanostructures to determine their structural and mechanical properties.

The findings of the study help identify the properties of nanomaterials.