The samples used in the analysis were monolayer and bilayer graphene films deposited on Si substrates. The Raman mapping was completed with an Edinburgh Instruments RM5 equipped with a 532 nm laser, a ...

When these semiconductors are reduced to monolayer thickness, their band structure changes ... peaking at 90% transmission at 190–3500 nm. Raman spectroscopy was performed on a dry dropcast sample ...

An optical spectroscopic technique, surface-enhanced Raman spectroscopy (SERS), mostly used in the research setting for liquid sample analysis, has recently been applied to breath-based diagnostics.

IT is now just two years since the effect known by his name was discovered by Sir Chandrasakara Raman, 1 but the phenomenon has aroused so much interest that even in this short time a tremendous ...

Since the obtaining of graphene, two-dimensional materials have emerged as a new class of nanomaterials with a plethora of new basic properties leading to a wide range of possible applications. In ...