13 research outputs found
Ultra-High-Resolution Differential Interference Microscopy of Ag Deposition on an Ultraflat Au(111)
The electrodeposition of silver on
an atomically ultraflat surface
of Au(111) was investigated using laser confocal microscopy combined
with the differential interference contrast microscopy (LCM-DIM) in
the sulfuric acid medium with silver sulfate as an electrolyte solution.
For the first time, we have observed the underpotential deposition
processes of silver atoms on the large Au(111) surface area in atomic
height resolution of as-deposited Ag layers using LCM-DIM. In underpotential
deposition (UPD) regions, small islands of Ag atoms with monatomic
step heights are formed on the Au(111) terraces at the initial stage,
followed by the increase in domain size of islands, and then finally
a complete monolayer was formed on the Au(111) surface. Before initiating
the bulk deposition of Ag, our LCM-DIM gave direct evidence for the
formation of the third monolayer of Ag at the foot of the potential
of the bulk deposition. In addition to UPD, the bulk deposition of
Ag was also investigated which demonstrated that the very flat Ag
surface appeared on the Au(111) surface. Finally, it has been demonstrated
that the LCM-DIM was an ideal tool to capture images of the fast dynamic
Ag electrodeposition processes on the Au(111) surface with the fastest
acquisition times of 2–10 frames per second
Ultra-High-Resolution Differential Interference Microscopy of Ag Deposition on an Ultraflat Au(111)
The electrodeposition of silver on
an atomically ultraflat surface
of Au(111) was investigated using laser confocal microscopy combined
with the differential interference contrast microscopy (LCM-DIM) in
the sulfuric acid medium with silver sulfate as an electrolyte solution.
For the first time, we have observed the underpotential deposition
processes of silver atoms on the large Au(111) surface area in atomic
height resolution of as-deposited Ag layers using LCM-DIM. In underpotential
deposition (UPD) regions, small islands of Ag atoms with monatomic
step heights are formed on the Au(111) terraces at the initial stage,
followed by the increase in domain size of islands, and then finally
a complete monolayer was formed on the Au(111) surface. Before initiating
the bulk deposition of Ag, our LCM-DIM gave direct evidence for the
formation of the third monolayer of Ag at the foot of the potential
of the bulk deposition. In addition to UPD, the bulk deposition of
Ag was also investigated which demonstrated that the very flat Ag
surface appeared on the Au(111) surface. Finally, it has been demonstrated
that the LCM-DIM was an ideal tool to capture images of the fast dynamic
Ag electrodeposition processes on the Au(111) surface with the fastest
acquisition times of 2–10 frames per second
Ultra-High-Resolution Differential Interference Microscopy of Ag Deposition on an Ultraflat Au(111)
The electrodeposition of silver on
an atomically ultraflat surface
of Au(111) was investigated using laser confocal microscopy combined
with the differential interference contrast microscopy (LCM-DIM) in
the sulfuric acid medium with silver sulfate as an electrolyte solution.
For the first time, we have observed the underpotential deposition
processes of silver atoms on the large Au(111) surface area in atomic
height resolution of as-deposited Ag layers using LCM-DIM. In underpotential
deposition (UPD) regions, small islands of Ag atoms with monatomic
step heights are formed on the Au(111) terraces at the initial stage,
followed by the increase in domain size of islands, and then finally
a complete monolayer was formed on the Au(111) surface. Before initiating
the bulk deposition of Ag, our LCM-DIM gave direct evidence for the
formation of the third monolayer of Ag at the foot of the potential
of the bulk deposition. In addition to UPD, the bulk deposition of
Ag was also investigated which demonstrated that the very flat Ag
surface appeared on the Au(111) surface. Finally, it has been demonstrated
that the LCM-DIM was an ideal tool to capture images of the fast dynamic
Ag electrodeposition processes on the Au(111) surface with the fastest
acquisition times of 2–10 frames per second