Tóm tắt

The in situ manipulation and property investigation of individual one-dimensional (1-D) nanomaterials (such as nanowires, nanotubes and 1-D heterostructures) as well as the construction ofrnnanodevices based on these nanomaterials that have potential vital applications have become thernfocus of researchers worldwide. In recent years, the studies on these nanostructures have mainlyrnshifted to three aspects of in-situ manipulation, property investigation and application exploration. The high-resolution transmission electron microscope (HRTEM) equipped with an atomicrnforce microscope (AFM) or a scanning tunneling microscope (STM) holder, and a heating/coolingrnholder has already developed as the most advanced technology capable of implementing in siturnmanipulation on and probing physical properties of nano-objects. In this review, we will summarize the significant developments in regards to the on-demand manipulation, thermal, mechanical, and electrical property investigations of 1-D nanomaterials as well as exploring theirrnapplications in piezoelectrical devices, lithium ion batteries andfield emission devices. Thernhighlight here is that inside a transmission electron microscope (TEM), the thermal, mechanicalrnand electrical transport data are acquired in real time with three-dimensional (3-D) manipulationrnon one particular nano-object and can thus reflect the dynamic morphological, structural andrnchemical changes of a given nanomaterial.