A simple and versatile strategy is designed to successfully fabricate ultrafine TiO2 nano-cages based on the rapid decomposition reaction between amphoteric hydroxide and ammonia solution by pulsed laser ablation of Ti/Al alloy in liquid. With the ammonia concentration (Vammonia:Vwater, where V is v

介绍了如何用轻量级的形式化建模语言alloy来建立模型。