典型文献
Origin of friction hysteresis on monolayer graphene
文献摘要：
Load-dependent friction hysteresis is an intriguing phenomenon that occurs in many materials,where the friction measured during unloading is larger than that measured during loading for a given normal load.However,the mechanism underlying this behavior is still not well understood.In this work,temperature-controlled friction force microscopy was utilized to explore the origin of friction hysteresis on exfoliated monolayer graphene.The experimental observations show that environmental adsorbates from ambient air play an important role in the load dependence of friction.Specifically,the existence of environmental adsorbates between the tip and graphene surface gives rise to an enhanced tip-graphene adhesion force,which leads to a positive friction hysteresis where the friction force is larger during unloading than during loading.In contrast to positive friction hysteresis,a negative friction hysteresis where the friction force is smaller during unloading than during loading is observed through the removal of the environmental adsorbates upon in situ annealing.It is proposed that the measured friction hysteresis originates from the hysteresis in the contact area caused by environmental adsorbates between the tip and graphene.These findings provide a revised understanding of the friction hysteresis in monolayer graphene in terms of environmental adsorbates.
文献关键词：
中图分类号：
作者姓名：
Deliang ZHANG;Yuge ZHANG;Qiang LI;Mingdong DONG
作者机构：
Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education,School of Chemistry and Chemical Engineering,Shandong University,Jinan 250100,China;Interdisciplinary Nanoscience Center(iNANO),Aarhus University,Aarhus C DK-8000,Denmark
文献出处：
引用格式：
[1]Deliang ZHANG;Yuge ZHANG;Qiang LI;Mingdong DONG-.Origin of friction hysteresis on monolayer graphene)[J].摩擦（英文）,2022(04):573-582
A类：
adsorbates
B类：
Origin,friction,hysteresis,monolayer,graphene,Load,dependent,intriguing,phenomenon,that,occurs,many,materials,where,measured,during,unloading,larger,than,given,normal,However,mechanism,underlying,this,behavior,still,not,well,understood,In,work,temperature,controlled,force,microscopy,was,utilized,explore,exfoliated,experimental,observations,show,environmental,from,ambient,air,play,important,role,dependence,Specifically,existence,between,tip,surface,gives,rise,enhanced,adhesion,which,leads,positive,contrast,negative,smaller,observed,through,removal,upon,situ,annealing,It,proposed,originates,contact,area,caused,by,These,findings,provide,revised,understanding,terms
AB值：
0.44011
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