中文摘要：

文章报道了加热包裹团簇（结构为Pb芯／PbO壳）产生纳米喷射。随着温度升高，熔点较低的铅核先熔化并膨胀，冲破氧化层外壳形成蝌蚪状的纳米喷射。温度可变拉曼谱研究表明纳米喷射形成与加热温度密切相关，其本质是与团簇内部压力有关，团簇内核融熔膨胀受到外壳限域而产生极高内压。

英文摘要：

The experimental observation of nanojets formed by heating PbO-coaled Pb eh, sters is reported. As the temperature increases the Pb core which has a lower inching point mehs first, then expands, breaks its oxide shell and finally forms a nanojet with a condensed trail in the shape of a tadpole. The temperature-dependent Raman spectrum indicates that the nanojet formation is closely related to the temperature, and essentially to the internal pressure of the coated cluster. The pressure inside the shell comes from the inner core＇s melting and its confined volume expansion, resulting in explosive release of the high pressure.