Laser Machining of Graphene

摘要: Since Geim and Novoselov’s successful production of high quality graphene, its unique properties have found a number applications. But graphene is not an exotic chemical compound; instead, it sheet graphite, one atom think. Before 2008, the only way to produce was through successive pealing graphite with scotch tape until flakes as thin 1 atomic layer were left [14]. This method, known mechanical exfoliation, can very small longest being only100μm in length [7]. However 2008 new method growing vapor deposition (CVD) discovered [16]. sheets large 30 inches [1]. With these extremely sheets, need economically cut without altering it’s grew. Current methods use techniques implemented microelectronics fabrication. Oxygen-plasma etching most common used pattern but this uses harsh chemicals, which negatively alter graphene’s properties. As alternative, electron microscopes be remove unwanted graphene. In beam intensified enough carbon atoms form lattice resolution, process also affect Laser cutting offers quick cost effective direct patterning affecting We conducted study using continuous wave laser machine into desired shapes. The success determined when electrical current could passed from side other (determining if contact between two regions severed by laser).