Direct laser writing of nanodiamond films from graphite under ambient conditions.

ABSTRACT: Synthesis of diamond, a multi-functional material, has been a challenge due to very high activation energy for transforming graphite to diamond, and therefore, has been hindering it from being potentially exploited for novel applications. In this study, we explore a new approach, namely confined pulse laser deposition (CPLD), in which nanosecond laser ablation of graphite within a confinement layer simultaneously activates plasma and effectively confine it to create a favorable condition for nanodiamond formation from graphite. It is noteworthy that due to the local high dense confined plasma created by transparent confinement layer, nanodiamond has been formed at laser intensity as low as 3.7 GW/cm(2), which corresponds to pressure of 4.4 GPa, much lower than the pressure needed to transf

SUBMITTER: Nian Q 

PROVIDER: S-EPMC4202219 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature