一些经典的纳米图片包括一些动画.docx

一些经典的纳米图片包括一些动画.docx

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一些经典的纳米图片包括一些动画

转一些经典的纳米图片（包括一些动画）

纳米尺度的图片概念

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OJ_FWm_Z（X.'阿果资源网（）版权所有' 

qP9`p4c8_i.'阿果资源网（）版权所有' 

真正的纳米尺度\_Jwc[R&x_.'阿果资源网（）版权所有' 

H@__|m_^1.'阿果资源网（）版权所有' 

%_mS>_v__|.'阿果资源网（）版权所有' 

3_m_y_Gp_.'阿果资源网（）版权所有' 

Carbonnanotubedativejunctionassembly

_U__wIx_.'阿果资源网（）版权所有' 

u__}_[.*e.'阿果资源网（）版权所有' 

Dative（dipolar）bondsareapotentiallyvaluableformofnoncovalentinteractionforuseindiamondoidandmacromolecularnanostructures.Theseinteractionsrequirealonepairdonor,suchasthelonepairofnitrogen,andanacceptor,suchastheemptysp2orbitalorboron.BoronandnitrogenarebothgoodstructuralreplacementsfortheC-Hfragmentsfoundinhydrocarbons（nitrogenbecauseitisisoelectronicwiththeC-Hunit,boronbecauseitcanaccommodatethreecovalentbondstoleavethelastorbitalempty）.Inthisdesign,carbonnanotubesarefunctionalizedwithadamantane-baseddativehingesthatlockeachfragmentintoplacetoformtheextendednetwork.（grey=carbon,white=hydrogen,blue=nitrogen,green=boron;left:

vanderWaalsrendering.right:

ball-and-stickrendering）;_YrmT9Jx6.'阿果资源网（）版权所有' 

ThesedesignsaretheresultofacollaborationwithDr.RalphMerkleintotheapplicationofthedativebondinmolecularbuildingblockapproachesformolecular-basedmaterialsdesign.CarbonnanotubedativejunctionassemblyG#_.q%Up.'阿果资源网（）版权所有' 

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Crimpjunctionsforperpendicularcarbonnanotubescaffolding\|__'Yuh.'阿果资源网（）版权所有' 

Lr*\LP6jx3.'阿果资源网（）版权所有' 

Inthisdesign,tworigiddiamondoidringsarefusedataquasi-tetrahedraljunctionandsized,throughtheadditionorsubtractionofrepeatsubunitsineachring,toaccommodatetwocarbonnanotubesofdifferentdiameters.ThecrimpingofthenanotubesisaresultofvanderWaalspackingoftherings,afeaturethatcanbeenhancedorremovedbyadjustingtheringsize.（grey=carbon,white=hydrogen,blue=nitrogen,red=oxygen）Bh_65qH_QO.'阿果资源网（）版权所有' 

/PEL[_Os.'阿果资源网（）版权所有' 

xks_Me_.'阿果资源网（）版权所有' 

Q_Vk_r_hwp.'阿果资源网（）版权所有' 

Low-frictionbearingassemblywithtwocarbonallotropesvU9:

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Inthisdesign,twodiamondoidringsreplacesmallsegmentsofacarbonnanotube,providingalockforathird,largerring.Thelargerringincludesastitch-workofoxygenstocreateanelectron-richinteriorwhoseeffectivecircularvanderWaalspackingjusttouchesthatofthenanotubeframework.rbrh;\

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u_c/W/cu,.'阿果资源网（）版权所有' 

Rigidrod-basednanomechanicalgearassemblyw8a

49Fv.'阿果资源网（）版权所有' 

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Here,afive-foldrotationaxisinasinglerigidrodiscoupledtofourringscomposedof15subunitseach.Apagodanoidjunctionisincludedalongthisrigidrodtoraisethefivesectionsoftheassemblytocreateanelevatedgearingsystem.TheimageatleftisavanderWaalsrepresentation.Atright,onlytheoxygenandnitrogenatomsareshown（asspheres）tohighlighttherodinterior.（grey=carbon,white=hydrogen,blue=nitrogen,red=oxygen）V_）P8w#,__.'阿果资源网（）版权所有' 

AllimagesaretheresultofmolecularmechanicsstructurecalculationsusingeitherTinker（MM2parameters）orNAMD（CHARMM）.ImagesweremadewithVMD.VMDandNAMDaredevelopedwithNIHsupportbytheTheoreticalandComputationalBiophysicsgroupattheBeckmanInstitute,UniversityofIllinoisatUrbana-Champaign.TinkerisaproductofthePonderLabintheDepartmentofBiochemistryandMolecularBiophysicsattheWashingtonUniversitySchoolofMedicine.E.ZelmanandAppleComputerarethankedfortheirgenerousdonationofresources._bAwK_mk9C.'阿果资源网（）版权所有' 

cQm4_q1__9.'阿果资源网（）版权所有' 

lc3Gu78A/.'阿果资源网（）版权所有' 

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纳米团簇的制备

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z+-__o}_i.'阿果资源网（）版权所有' 

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Core/shellnanoparticlesxiD_gQTDz_.'阿果资源网（）版权所有' 

W_"GW[~h.'阿果资源网（）版权所有' 

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x7U=1y_（__.'阿果资源网（）版权所有' 

GoldNanoAnchorsPutNanowiresinTheirPlace&9fQW?

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Scanningelectronmicroscopeimageshowsrowsofhorizontalzinc-oxidenanowiresgrownonasapphiresurface.Thegoldnanoparticlesarevisibleontheendsofeachrow[`t_;o_r_.'阿果资源网（）版权所有' 

]i@73hYT.'阿果资源网（）版权所有' 

Illustrationshowshowcrystallinezincoxidenanowires（blue）push"seeds"ofgoldnanoparticles（red）forwardastheygrow&h5Y_noGX.'阿果资源网（）版权所有' 

ResearchersattheNationalInstituteofStandardsandTechnology（NIST）havedemonstratedatechniqueforgrowingwell-formed,single-crystalnanowiresinplace—andinapredictableorientation—onacommerciallyimportantsubstrate.1o%_#kf_.'阿果资源网（）版权所有' 

Themethodusesnanoparticlesofgoldarrangedinrowsonasapphiresurfaceasstartingpointsforgrowinghorizontalsemiconductor"wires"only3nanometers（nm）indiameter.Othermethodsproducesemiconductornanowiresmorethan10nmindiameter.NISTchemists'workwashighlightedintheOct.11issueofAppliedPhysicsLetters.*Sb/?

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Partofthevisionofnanotechnologyisthepossibilityofbuildingpowerful,extraordinarilycompactsensorsandotherdevicesoutofatomic-scalecomponents.So-called“nanowires”—longthincrystalsof,e.g.,asemiconductor—couldnotonlylinknanoelectronicdeviceslikeconventionalwirebutalsofunctionasdevicesthemselves,tippedwithphotodetectororlight-emittingelements,forexample.B[GC_@]_HE.'阿果资源网（）版权所有' 

Anobviousstumblingblockistheproblemofworkingwithcomponentssosmallthatonlythemostsophisticatedmeasurementinstrumentscaneventrackthem.Todate,themostsuccessfulnanowirealignmentmethodinvolvedgrowinglargenumbersoftherod-likecrystalsonasuitablebaselikebladesofgrass,shearingthemoff,mixingtheminasolvent,andforcingthemtoalignbyeitherfloworsurfaceconfinementonthetestsubstratetoorientmostofthecrystalsinaspecifichorizontaldirection.Furtherphotolithographystepsarerequiredtoensurethatnanowiresarepositionedcorrectly.BZ?

3_=S1*.'阿果资源网（）版权所有' 

Incontrast,theNISTtechniquegrowsarraysofnanowiresmadeofzincoxide,asemiconductorwidelyusedinoptoelectronics,withprecisealignments.Thegold"anchors"areplacedwithachemicaletchingstepandtheorientationofthewires—horizontal,verticalorata60degreeanglefromthesurface—isdeterminedbytweakingthesizeofthegoldparticles.Q_IGUi,_R.'阿果资源网（）版权所有' 

s_Z[[ymu8.'阿果资源网（）版权所有' 

_51q_|_-d.'阿果资源网（）版权所有' 

CLrX!

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"AnatomyofaNanoprobe":

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ProfessorCharlesM.LieberGroup.{V"Gn9!

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AschematicillustrationofthechemicalforcemicroscopysetupusedtostretchandbreakduplexDNA.Theinsetshowsacartoonrepresentationsbetweentwocomplementarystrandsimmobilizedonthetipandsamplesurfaces.TheDNAshowninthecartooncorrespondstotherelaxedB-DNAconformationO__EW'bT）.'阿果资源网（）版权所有' 

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]S6Gz/4aV+.'阿果资源网（）版权所有' 

_Kd_VKvs[_.'阿果资源网（）版权所有' 

MagneticNanotubes_I_|@+_O_#.'阿果资源网（）版权所有' 

Dr.RafalE.Dunin-Borkowski,UniversityofCambridgeDepartmentofMaterialsScience&MetallurgyGalleryy4^u&0_}0$.'阿果资源网（）版权所有' 

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ThenanotubeswerefabricatedintheUniversityofCambridgeEngineeringdepartmentbyYasuhikoHayashi,whogrewthemusingaCobalt-Palladiumcatalyst.Thisalloyremainspresentintheendsofthenanotubes,andismagnetic.Thenanotubesyouseeherehavea70-100nmdiameter.CharacterisationofthemagneticpropertieswascarriedoutbyEdSimpsonandTakeshiKasamausingElectronHolography,aTEMtechniquewhichrecordsthephaseofanelectronwave.Thephase,beingaffectedbyanymagneticfieldtheelectronpassesthrough,thereforerecordsanyinformationonthemagneticpropertiesonthesampleunderinvestigation.Fromthis,themagneticinductionmapsyouseeherecanbegenerated.Thecoloursrepresentthedirectionandintensityofthefield,andthecontours,themagneticfieldlines.Itisanentirelyquantitativetechnique,soaswellastheseimagesofthefield,themagneticmoment,forinstance,canbededucedtoo.Rl_q7._2cP.'阿果资源网（）版权所有' 

t>j_C{X1_（.'阿果资源网（）版权所有' 

）_c@gRb~_.'阿果资源网（）版权所有' 

_Bk_cw_l_.'阿果资源网（）版权所有' 

MagneticfieldofanironcrystalinsideacarbonnanotubepCz6_[*kC.'阿果资源网（）版权所有' 

Xoj_"rR9|.'阿果资源网（）版权所有' 

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