RT journal article
T1 Laser Engineering Nanocarbon Phases within Diamond for Science and Electronics
A1 Salter, Patrick
A1 Villar Castro, María del Pilar
A1 Lloret Vieira, Fernando Manuel
A1 Fernández de los Reyes, Daniel
A1 Krueger, Marta
A1 Henderson, Calum S.
A1 Araújo Gay, Daniel
A1 Jackman, Richard B
A2 Física Aplicada
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
AB Diamond, as the densest allotrope of carbon, displays arange of exemplary material properties that are attractive from a deviceperspective. Despite diamond displaying high carbon−carbon bondstrength, ultrashort (femtosecond) pulse laser radiation can providesufficient energy for highly localized internal breakdown of the diamondlattice. The less-dense carbon structures generated on lattice breakdownare subject to significant pressure from the surrounding diamond matrix,leading to highly unusual formation conditions. By tailoring the laser dosedelivered to the diamond, it is shown that it is possible to createcontinuously modified internal tracks with varying electrical conduction properties. In addition to the widely reported conducting tracks, conditions leading to semiconducting and insulating written tracks have been identified. High-resolution transmission electron microscopy (HRTEM) is used to visualize the structural transformations taking place and provide insight into the different conduction regimes. The HRTEM reveals a highly diverse range of nanocarbon structures are generated by the laser irradiation, including many signatures for different so-called diaphite complexes, which have been seen in meteorite samples and seem to mediate the laser-induced breakdown of the diamond. This work offers insight into possible formation methods for the diamond and related nanocarbon phases found in meteorites.
YR 2024
FD 2024
LK http://hdl.handle.net/10498/30529
UL http://hdl.handle.net/10498/30529
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 13-nov-2026