简介:Wheninterfaciallayersareviewedasaseparatephase,theinterfacethicknessplaysanessentialroleinassessingphysico-mechanicalpropertiesofparticulatematerials.However,theinterfacethicknessfromsectionalanalysisisoftenoverestimated,duetotheirregularityofsurfacetexturesofgrainsinopaquematerialsthatgivesrisetothenormalofacross-sectionalplanenon-perpendiculartothesurfaceofgrains.Hence,thedeterminationoftheoverestimationdegreeisverycriticaltopreciselyobtaintheinterfacethickness.Thisarticledevelopsanumericalmodelfortheoverestimationdegreeoftheinterfacethicknessaroundanellipsoidalgrainwithanarbitraryaspectratio,byapplyinganaccuratesectionalanalysisalgorithm,andquantitativestereologyandgeometricalprobabilitytheories.Furthermore,onthebasisofthedevelopednumericalmodel,theinfluenceofellipsoidalparticleshapeontheoverestimationdegreeisquantitativelycharacterized.
简介:WepresentthetemperaturedependentelectricaltransportmeasurementsofAg/Si(111)-(√3×√3)R30°bytheinsitumicro-four-pointprobemethodintegratedwithscanningtunnelingmicroscopy.Thesurfacestructurecharacterizationsshowhexagonalpatternsatroomtemperature,whichsupportstheinequivalenttriangle(IET)model.Ametal-insulatortransitionoccursat-115K.Thelowtemperaturetransportmeasurementsclearlyrevealthestronglocalizationcharacteristicsoftheinsulatingphase.