文档介绍：山东大学硕士学位论文曼苎!!竺鼍!!!!!!!!!!!!!!!!!!!苎!:!竺苎!!==!。.——.I==ABSTRACTOne..andtwo..dimensionalnanostructuresdefinedasthosehavingatleastonedimensionbetweenand00nmhaveattractedaprimeattentionoverthepasttwodecadesduetotheirpeculiarandfascinatingpropertiesandawiderangeofinterestingpotentialapplicationswhich,inmanycases,)b-works,,,one-andtwo-dimensionalboronnitridematerialsandB—C-Nnanotubeshavebeensynthesizedbychemicalvapordeposition(CVD),,synthesisofverticallyalignedboronnitridenanosheets(BNNSs)onsiliconsubstratesat000oCbychemicalvapordepositionfromagasmixtureofBCl3-NH3一H2,—preparedBNNSswerelessthan0nin,,X—-,siliconnanowiresweresynthesizedusingsuperimposedsilicones,-,B--C·-—C—Nnanotubeswerehexagonalphase,,TEMandHRTEMresulisshowedthatthediametersofthenanotubeswerebetween30to90nm,andthelengthwasmicrometers.、,·C-Nnanotubeshavebeeninvestigaledonthepreparation,characterization