简介：SometribologicalbehaviorbetweenmatureGampsocleisgratiosafootpadsandverticalflatsofdifferentmaterialswerestudiedinthiswork.stereomieroscope(SMS)andscanningelectronmicroscope(SEM)wereusedtomeasurethemorphologyoftheGampsocleisgratiosafootpads.Anatomicforcemicroscope(AFM)wasusedtomeasurethemorphologiesofthesurfacesofglassandawalldopedwithcalciumcarbonatematerial.TheattachingbehaviorofGampsocleisgratiosafeetonthetwoverticalsurfaceswasobserved.Theattachingforce(perpendiculartotheverticalsurface)andthestaticfrictionalforce(alongthedirectionofgravitation)ofGampsocleisgratiosafootpadsonaverticalglassweremeasured.Itwasshownthattheaverageattachingforceis50.59mNandthestaticfrictionalforceis259.10mN.ThephysicalmodelsoftheattachinginterfacebetweenGampsocleisgratiosafootpadsandthetwoverticalsurfaceswereproposed.Itwasobservedthatthefootpadsaresmoothinmacroscale;however,thepadsurfaceiscomposedbyapproximatehexagonalunitswithsizesof3μmto7μminmicroscale;theadjacentunitsareseparatedbynanoscalegrooves.TheObservationsshowedthattheGampsocleisgratiosacannotclimbtheverticalcalciumcarbonatewall;incontrast,theycaneasilyclimbtheverticalglasssurface.Basedonthefeaturesofthegeometricalmorphologiesofthefootpadsandtheglasssurface,wespeculatethattheattachingforceandstrongstaticfrictionalforceareattributedtotheinterinlaysbetweenthedeformableGampsocleisgratiosafootpadsandthenanoscalesharptipsoftheglasssurface.
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