Enhancing NIR Shielding Properties of Au/CsWO Composite via Physical Mixing and Solvothermal Processes.

This research aims to enhance the near-infrared (NIR) shielding ability of cesium tungsten bronze (CsWO) by increasing the spectral absorption in this region through the incorporation of gold nanorods (Au). Two approaches were used to prepare the composite materials: physical mixing and solvothermal process. The effects of gold nanorods content on the crystalline size, particle size, shape, and optical properties of the composite were investigated systematically using DLS, TEM, XRD, and UV-Vis spectroscopy techniques, respectively.

Trapping Iron Oxide into Hollow Gold Nanoparticles.

Synthesis of the core/shell-structured Fe3O4/Au nanoparticles by trapping Fe3O4 inside hollow Au nanoparticles is described. The produced composite nanoparticles are strongly magnetic with their surface plasmon resonance peaks in the near infrared region (wavelength from 700 to 800 nm), combining desirable magnetic and plasmonic properties into one nanoparticle. They are particularly suitable for in vivo diagnostic and therapeutic applications.