# Selective scattering of blue and red light based on silver and gold nanocubes

## TL;DR

This paper investigates how dielectric substrate/metal nanocube structures can be engineered to achieve selective forward and backward scattering of specific visible light colors, enhancing transparent projection screens.

## Contribution

It introduces three novel nanocube designs that enable selective scattering of blue and red light in desired directions, based on numerical simulations.

## Key findings

- Designs achieve selective forward/backward scattering of blue and red light.
- Numerical simulations validate the directional scattering properties.
- Potential applications in transparent projection screens.

## Abstract

Selective scattering of red-, green- and blue-light and transmitting other visible light to achieve transparent projection screen has been proposed recently based on metallic nanoparticle's localized surface plasmon resonance (LSPR). However, dielectric (TiO2) substrate/silver (Ag) nanocube structure was only demonstrated to selectively scatter blue-light in the backward direction. Given human eyes are sensitive to green-light, it is of interest to find out how to achieve selective forward-scattering of blue- and red-light and selective backward-scattering of red-light. In this work, through numerical simulation, forward and backward scattering properties of dielectric substrate/Ag (or gold) nanocube structures are investigated. And based on these properties, three designs are proposed which can achieve selective scattering of blue- and red-light in forward or backward or both directions.

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Source: https://tomesphere.com/paper/1901.08767