纳米粒子在具有温度梯度的碳纳米管上运动模式的研究
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Keywords: 纳米粒子,碳纳米管,分子动力学模拟,温度梯度
Abstract:
采用分子动力学(md)模拟的方法,使用born-mayer-huggins与lennard-jones相互作用势函数,研究ki纳米粒子负载在具有一定温度梯度的碳纳米管外壁上的运动特征.模拟结果表明,在纳米粒子由碳管高温端向低温端运动的过程中有两种模式.通过ki纳米粒子在具有温度梯度的碳管上的轨迹分析,说明了这些运动模式与碳纳米管的手性、管径和温度梯度的大小密切相关.通过ki纳米粒子在具有温度梯度的碳管上的受力分析,解释了ki纳米粒子在具有温度梯度的碳管上采取特殊模式运动的原因.本文的工作对于设计纳米尺度的马达有一定的指导意义.
References
[1] | schoenpae,waltherjh,arcidiaconos,etal.nanoparticletrafficonhelicaltracks:thermophoreticmasstransportthroughcarbonnanotubes[j].nanolett,2006,6(9):1910-1917.
|
[2] | barreiroa,ruralir,hernándezer,etal.subnanometermotionofcargoesdrivenbythermalgradientsalongcarbonnanotubes[j].science,2008,320:775-778.
|
[3] | chandrabp.mechanoluminescenceinducedbyelasticdeformationofcolouredalkalihalidecrystalsusingpressuresteps[j].jlumin,2008,128:1217-1224.
|
[4] | waltherjh,jaffer,halicioglut,etal.carbonnanotubesinwater:structuralcharacteristicsandenergetics[j].jphyschemb,2001,105:9980-9987.[11]tosimp,fumifg.ionicsizesandbornrepulsiveparametersinthenacl-typealkalihalides-ⅱ[j].jphyschemsolids,1964,25:45-52.
|
[5] | steeletwa.theinteractionofraregasatomswithgraphitizedcarbonblack[j].jphyschem,1978,82(7):817-821.
|
[6] | ruralir,hernándezer.thermallyinduceddirectedmotionoffullereneclustersencapsulatedincarbonnanotubes[j].chemphyslett,2010,497:62-65.[2]reganbc,alonis,ritchiero,etal.carbonnanotubesasnanoscalemassconveyors[j].nature,2004,428:924-927.
|
[7] | zambranoha,waltherjh,jafferl.thermallydrivenmolecularlinearmotors:amoleculardynamicsstudy[j].jchemphys,2009,131:241104-241106.[5]lohrasebia,neek-amalm,ejtehadimr.directedmotionofc60onagraphenesheetsubjectedtoatemperaturegradient[j].physreve,2011,83:042601-042604.
|
[8] | joungis,cheathamte.determinationofalkaliandhalidemonovalentionparametersforuseinexplicitlysolvatedbiomolecularsimulations[j].jphyschemb,2008,112:9020-9041.
|
[9] | plimptons.fastparallelalgorithmsforshort-rangemoleculardynamics[j].jcomputphys,1995,117:1-19.
|
[10] | berendsenhjc,postmajpm,vangunsterenwf,etal.moleculardynamicswithcouplingtoanexternalbath[j].jchemphys,1984,81:3684-3690.[13]schellingpk,phillpotsr,keblinskip.comparisonofatomic-levelsimulationmethodsforcomputingthermalconductivity[j].physrevb,2002,65:144306-144317.
|
[11] | hummerg,rasaiahjc,noworytajp.waterconductionthroughthehydrophobicchannelofacarbonnanotube[j].nature,2001,414:188-190.
|
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