= Early surface-reconstruction measurements with scanning tunneling microscopy
For <gold> (110), the 1982 paper compared an untreated surface with one prepared by <argon> <sputtering> and <annealing>. Repeated cleaning reproduced the corrugation; the gap-modulation signal checked <work function> variation. This supported a structural interpretation while exposing the danger of confusing <work function> contrast with geometric relief.<Surface Studies by Scanning Tunneling Microscopy by Gerd Binnig and others>[p. 59, Au preparation, repeated cleaning and modulated signal]{ref}
The authored lecture describes resolving the $1\times2$ <surface reconstruction> on <gold> (110), alongside ribbons of other periodicities. It also reports <gold> transfer to the tip on contact and fluctuating resolution, attributed tentatively to migrating tip <chemical atoms>. The probe could change during observation: an image was evidence requiring controls, not an unambiguous map of atomic positions.<Scanning Tunneling Microscopy: From Birth to Adolescence by Gerd Binnig and others>[pp. 398–399, Au(110) reconstruction, tip coating and changing resolution]{ref}
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