Design, Implementation and Characterization of a Quantum-Dot-Based Volumetric Display

Ryuji Hirayama,Atsushi Shiraki,Tomoyoshi Ito,Makoto Naruse,Motoichi Ohtsu,Naoya Tate,Takashi Kakue,Tomoyoshi Shimobaba,Hirotaka Nakayama

doi:10.1038/srep08472

Abstract

In this study, we propose and experimentally demonstrate a volumetric display system based on quantum dots (QDs) embedded in a polymer substrate. Unlike conventional volumetric displays, our system does not require electrical wiring; thus, the heretofore unavoidable issue of occlusion is resolved because irradiation by external light supplies the energy to the light-emitting voxels formed by the QDs. By exploiting the intrinsic attributes of the QDs, the system offers ultrahigh definition and a wide range of colours for volumetric displays. In this paper, we discuss the design, implementation and characterization of the proposed volumetric display's first prototype. We developed an 8 × 8 × 8 display comprising two types of QDs. This display provides multicolour three-type two-dimensional patterns when viewed from different angles. The QD-based volumetric display provides a new way to represent images and could be applied in leisure and advertising industries, among others.

Highlights

We propose and experimentally demonstrate a volumetric display system based on quantum dots (QDs) embedded in a polymer substrate
Our system does not require electrical wiring; the heretofore unavoidable issue of occlusion is resolved because irradiation by external light supplies the energy to the light-emitting voxels formed by the QDs
We developed a QD-based volumetric display that exhibits three different images that may be viewed simultaneously from three orthogonal viewpoints

Summary

Introduction

We propose and experimentally demonstrate a volumetric display system based on quantum dots (QDs) embedded in a polymer substrate. The light-emitting elements are formed by the QDs. Irradiation by an external invisible or visible light source excites the QDs and generates spontaneous emission; this in turn creates patterns that can be simultaneously observed from various viewing angles. When the different-sized QDs are closely packed, optical energy transfer occurs among them because of the nanometre-scale near-field interactions[9]. This www.nature.com/scientificreports energy-transfer mechanism has not been used for the experiment reported it will be exploited to provide additional functionality in future. We describe the design, fabrication and characterization of the proposed QD-based volumetric display

Methods

Results

Conclusion