Ultra-short-pulse laser ablation and modification of fully sprayed single walled carbon nanotube networks

摘要: Abstract In this study, we report on femtosecond ( 470 fs ) laser pulse ablation and modification of solution processed single-walled carbon nanotube (SWCNT) networks sprayed oxidized silicon polyimide substrates. Taking advantage the small heat affected zone regime demonstrate precise selective processes, that advance patterning beyond simple galvanic isolation. A thorough investigation regarding pulse-SWCNT film interaction is performed, identifying critical regimes in single- multi-pulse operation mode. For first time achieve a pronounced debundling network, by operating below threshold, process was previously limited to pre-deposition. Furthermore, investigate effect polarized pulses properties. Making use linear are able selectively ablate SWCNTs, which oriented parallel incident polarization, resulting aligned with anisotropic conductivity. This feature tied direct growth strongly limiting its implementation. The scaleability presented processes demonstrated, allowing for low-cost SWCNT thin-films, while maintaining advantages on-chip such as separation alignment.