碳纳米管在高压下的电学性质与状态方程  

ELECTRICAL PROPERTY AND EQUATIONS OF STATE IN CARBON NANOTUBES AT HIGH PRESSURE

作　　者：鲍忠兴[1] 成会明[2,3] 白朔[2] 李峰[2] 候鹏翔[2] 柳翠霞[1] 

机构地区：[1]中国科学院物理研究所 [2]中国科学院金属研究所 [3]沈阳材料科学国家联合实验室,辽宁沈阳110016

出　　处：《高压物理学报》2002年第1期42-45,共4页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金 (5 990 2 0 0 9) ;国家自然科学杰出青年基金 (5 0 0 2 5 2 0 4)

摘　　要：在金刚石压砧装置上 ,采用电阻测量方法研究了多层碳纳米管在室温下、2 3GPa内的电阻与压力的关系。实验结果表明 ,在 1 5～ 4 6GPa内 ,电阻急剧减小 ,而在 5 7GPa左右 ,电阻出现一个极大值。这些变化与碳纳米管的结构、形状和层间距离的变化有关。同时 ,还在活塞 圆筒式p V关系测量装置上首次研究了多层碳纳米管在室温下、4 5GPa内的p V关系 ,给出了它在第一次和第七次压缩时的状态方程。The resistance-pressure relationship for multi-wall carbon nanotubes at room temperature and up to 23GPa was studied in a diamond anvil cell using resistance measurement.The experimental results show that the resistance decreases sharply with pressure in 1.5～4.6GPa,and exhibits a maximum value at about 5.7GPa,which concerns the changes of the structure,shape and inter layer distance of carbon nanotubes.In the present work,the p-V relationships for multi-wall carbon nanotubes at room temperature at pressures up to 4.5GPa were first studied using the piston-cylinder type measurement device for the p-V relationship.Its equations of state at first and seventh time compression were given.

关 键 词：碳纳米管 高压 电学性质 电阻 状态方程 

分 类 号：O521.2[理学—高压高温物理] O613.71[理学—物理]