The optical limiting properties of the materials are investigated by using nanosecond laser pulses . we find that skeleton atoms and terminal ligands with larger atomic number can improve the optical limiting power of clusters with the same structure via heavy - atom effect 研究了团簇材料的光学限幅特性，发现对于相同的结构的团簇，骨架上的原子序数较大的金属原子或终端配位体能通过重原子效应有效提高光限幅能力。
