一些的纳米图片包括一些动画.docx
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一些的纳米图片包括一些动画.docx
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一些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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Carbonnanotubedativejunctionassembly
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Dative(dipolar)bondsareapotentiallyvaluableformofnoncovalentinteractionforuseindiamondoidandmacromolecularnanostructures.Theseinteractionsrequirealonepairdonor,suchasthelonepairofnitrogen,andanacceptor,suchastheemptysp2orbitalorboron.BoronandnitrogenarebothgoodstructuralreplacementsfortheC-Hfragmentsfoundinhydrocarbons(nitrogenbecauseitisisoelectronicwiththeC-Hunit,boronbecauseitcanaccommodatethreecovalentbondstoleavethelastorbitalempty).Inthisdesign,carbonnanotubesarefunctionalizedwithadamantane-baseddativehingesthatlockeachfragmentintoplacetoformtheextendednetwork.(grey=carbon,white=hydrogen,blue=nitrogen,green=boron;left:
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ThesedesignsaretheresultofacollaborationwithDr.RalphMerkleintotheapplicationofthedativebondinmolecularbuildingblockapproachesformolecular-basedmaterialsdesign.CarbonnanotubedativejunctionassemblyG#.q%Up.'阿果资源网()版权所有'
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Inthisdesign,tworigiddiamondoidringsarefusedataquasi-tetrahedraljunctionandsized,throughtheadditionorsubtractionofrepeatsubunitsineachring,toaccommodatetwocarbonnanotubesofdifferentdiameters.ThecrimpingofthenanotubesisaresultofvanderWaalspackingoftherings,afeaturethatcanbeenhancedorremovedbyadjustingtheringsize.(grey=carbon,white=hydrogen,blue=nitrogen,red=oxygen)Bh65qHQO.'阿果资源网()版权所有'
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Inthisdesign,twodiamondoidringsreplacesmallsegmentsofacarbonnanotube,providingalockforathird,largerring.Thelargerringincludesastitch-workofoxygenstocreateanelectron-richinteriorwhoseeffectivecircularvanderWaalspackingjusttouchesthatofthenanotubeframework.rbrh;\ M.'阿果资源网()版权所有' `7R-2w .'阿果资源网()版权所有' 9^@)RED.'阿果资源网()版权所有' uc/W/cu,.'阿果资源网()版权所有' Rigidrod-basednanomechanicalgearassemblyw8a 49Fv.'阿果资源网()版权所有' HEw&' .'阿果资源网()版权所有' 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.bAwKmk9C.'阿果资源网()版权所有' cQm4q19.'阿果资源网()版权所有' lc3Gu78A/.'阿果资源网()版权所有' ]sJC%/.'阿果资源网()版权所有' 纳米团簇的制备 7*"Jx}eM.'阿果资源网()版权所有' pdvnpzj.'阿果资源网()版权所有' z+-o}i.'阿果资源网()版权所有' : ]+6l.'阿果资源网()版权所有' Core/shellnanoparticlesxiDgQTDz.'阿果资源网()版权所有' W"GW[~h.'阿果资源网()版权所有' Gx 6%Z$2n.'阿果资源网()版权所有' QXN_? 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JV>.'阿果资源网()版权所有' "AnatomyofaNanoprobe": snO*Zg.'阿果资源网()版权所有' ^9[Q;=R.'阿果资源网()版权所有' cC3>Ff'.'阿果资源网()版权所有' bC MVYd\)\o.'阿果资源网()版权所有' ProfessorCharlesM.LieberGroup.{V"Gn9! .'阿果资源网()版权所有' 'C[tPP.'阿果资源网()版权所有' AschematicillustrationofthechemicalforcemicroscopysetupusedtostretchandbreakduplexDNA.Theinsetshowsacartoonrepresentationsbetweentwocomplementarystrandsimmobilizedonthetipandsamplesurfaces.TheDNAshowninthecartooncorrespondstotherelaxedB-DNAconformationOEW'bT).'阿果资源网()版权所有' 6_j|@.'阿果资源网()版权所有' ]S6Gz/4aV+.'阿果资源网()版权所有' KdVKvs[.'阿果资源网()版权所有' MagneticNanotubesI|@+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' &\h7E.'阿果资源网()版权所有' ThenanotubeswerefabricatedintheUniversityofCambridgeEngineeringdepartmentbyYasuhikoHayashi,whogrewthemusingaCobalt-Palladiumcatalyst.Thisalloyremainspresentintheendsofthenanotubes,andismagnetic.Thenanotubesyouseeherehavea70-100nmdiameter.CharacterisationofthemagneticpropertieswascarriedoutbyEdSimpsonandTakeshiKasamausingElectronHolography,aTEMtechniquewhichrecordsthephaseofanelectronwave.Thephase,beingaffectedbyanymagneticfieldtheelectronpassesthrough,thereforerecordsanyinformationonthemagneticpropertiesonthesampleunderinvestigation.Fromthis,themagneticinductionmapsyouseeherecanbegenerated.Thecoloursrepresentthedirectionandintensityofthefield,andthecontours,themagneticfieldlines.Itisanentirelyquantitativetechnique,soaswellastheseimagesofthefield,themagneticmoment,forinstance,canbededucedtoo.Rlq7.2cP.'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' Bkcwl.'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' ThisimagewonFirstPrizeinthe"ScienceClose-Up"categoryintheDailyTelegraphVisionsofSciencecompetition.Theimageshowsamulti-walledcarbonnanotube,approximately190nmindiameter,containinga35-nm-diameterironcrystalencapsulatedinsideit.Electronholographyhasbeenusedtoobtainamapofthemagneticfieldsurroundingtheironparticle,ataspatialresolutionofapproximately5nm.Themagneticphasecontoursshowthattheparticlecontainsasinglemagneticdomain.Anexternalmagneticfieldcouldbeappliedtosuchparticlestoexertatorqueonthesurroundingnanotube.h<.5: a.'阿果资源网()版权所有' E_,/)U8.'阿果资源网()版权所有' #: )'D? .'阿果资源网()版权所有' v+$3.'阿果资源网()版权所有' CrystalKaleidoscope[8Ohg.'阿果资源网()版权所有' *D]: {#C*.'阿果资源网()版权所有' Thisisafalsecolourconvergentbeamelectrondiffractionpatternrecordedat150kVparalleltothethree-foldaxisoflanthanumaluminate.Inadditiontothemeshofreflectionsatthecentre,thepatternalsoshowsconcentriccirclesofreflectionsinsuccessivehigherorderLauezones.Oddnumberedzoneshaveonlyasinglebranchofintensitythatcorrespondstoscatteringsolely
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