This makes the codes spectroscopically active, allowing each to emit a unique light spectrum when illuminated by an exterior light source, typically a laser beam.

• 这种做法会使纳米盘编码产生光谱活性，并同时允许它们中的每一个在被一种外部光源（特别是一种激光束）照射时释放出一种独特的光谱。