竖立在晶态金表面上的短单壁碳纳米管
ASSEMBLED SORTER SINGLE-WALLED CARBON NANOTUBES STAND-ON GOLD FILM SURFACE
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摘要: 合成和提纯了单壁碳纳米管(SWCNTs),用胶体将其竖直地组装在金薄膜表面上。用此组装技术制造了扫描隧道显微镜(STM)的针尖,成功地观测到了金晶粒的形貌像和高定向石墨的原子像。SWCNTs竖立在金表面上对于电学特性测量,制造场发射电子源,组装纳米电子器件,制作扫描探针显微镜(SPM)针尖等有重要意义。Abstract: The single-walled carbon nanotubes(SWCNTs) are synthesized and purified.A water colloid of SWCNTs is prepared and used to assemble SWCNTs on a gold film surface.Its STM image shows sorter SWCNTs standing-on gold film surface.The crystal grain image of gold thin film and an atomic structure highly oriented pyrolytic graphite (HOPG) are observed using a scanning tunneling microscope(STE) with the SWCNT tip made from the water colloid mentioned above.The SWCNTs standing-on gold film surface is very important for measuring electronic properteis of carbon anotubes,fabricating field emission cathode,structing nanoelectrnic devices,and makign tips of a scannign probe microscope(SPM).
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