High speed direct imaging of thin metal film ablation by movie-mode dynamic transmission electron microscopy.

ABSTRACT: Obliteration of matter by pulsed laser beams is not only prevalent in science fiction movies, but finds numerous technological applications ranging from additive manufacturing over machining of micro- and nanostructured features to health care. Pulse lengths ranging from femtoseconds to nanoseconds are utilized at varying laser beam energies and pulse lengths, and enable the removal of nanometric volumes of material. While the mechanisms for removal of material by laser irradiation, i.e., laser ablation, are well understood on the micrometer length scale, it was previously impossible to directly observe obliteration processes on smaller scales due to experimental limitations for the combination of nanometer spatial and nanosecond temporal resolution. Here, we report the direct observation

SUBMITTER: Hihath S 

PROVIDER: S-EPMC4786820 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature