Superior Dynamic Penetration Resistance of Nanoscale Multilayer Polymer/Metal Films

Recent advances in experimental techniques have enabled impact tests of ultrathin films. For example, microprojectile impact tests of ultrathin polymer films have revealed that their specific penetration energy is about ten times more than that of the conventional armor materials. On the other hand, metallic nanostructures have demonstrated extraordinary mechanical properties. These observations suggest that multilayer arrangements of nanoscale...