Rainbow-like MoO3 Nanobelts Fashioned via AFM Micromachining

Single-crystalline MoO 3 nanobelts were prepared on a wide variety of substrates by a simple evaporation and deposition process using a thermal hot plate. This cost-effective technique has the potential for large-scale production of MoO 3 nanobelts with a unique layered structure. The MoO 3 nanobelts dispersed on silicon substrates exhibited a wide variety of colors attributable to the difference in the thicknesses of the nanobelts. Due to the weak interlayer binding, partial and localized removal of the layered nanobelts was readily achieved via atomic force microscope micromachining, resulting in multicolored patterns on individual nanobelts.