title: Transparent colloid containing upconverting nanocrystals: an alternative medium for three-dimensional volumetric display.
abstract: We report an alternative medium of transparent upconverting colloid containing lanthanide ion doped NaYF(4) nanocrystals for three-dimensional (3D) volumetric display. The colloids exhibit tunable upconversion luminescence with a wide spectrum of colors by adjusting the doping concentrations of the nanocrystals and the compositions of the colloids. Our preliminary experimental result indicates that an upconverting colloid-based 3D volumetric display using a convergent near infrared laser beam to induce a localized luminescent spot near the focus is technically feasible. Therefore arbitrary 3D objects can be created inside the upconverting colloid by use of computer controlled 3D scanning systems.
authors.affiliation: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Shanghai 201800, China.
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Liu
authors.forename: Guoping
authors.initials: G
authors.lastname: Dong
authors.forename: Yanbo
authors.initials: Y
authors.lastname: Qiao
authors.forename: Jianrong
authors.initials: J
authors.lastname: Qiu