Birefringent layers of GaP nanowires are grown by metal-organic vapor phase epitaxy on top of a GaP substrate. We modified the reflection of the as-grown layer by adding a shell of 12 nm of SiO2 around the nanowires. The effect of the shell on the effective refractive indices of the birefringent nanowire layer was calculated using Maxwell-Garnett effective medium theory for coated cylinders. The large change of the reflection due to the shell renders nanowire layers a promising material for sensing applications.
Semicond. Sci. Technol.

Diedenhofen, S. L., & Gómez Rivas, J. (2010). Modified reflection in birefringent layers of core-shell semiconductor nanowires. Semicond. Sci. Technol., 25(2, Article number: 24008), 1–5. doi:10.1088/0268-1242/25/2/024008