<div class="csl-bib-body">
<div class="csl-entry">Hütner, J. I., Kugler, D., Sabath, F., Schmid, M., Kühnle, A., Diebold, U., & Balajka, J. (2024, March 21). <i>Silver Iodide: Polar Surfaces as Ice Nuclei?</i> [Presentation]. DPG 2024 - German Physical Society annual meeting, Berlin, Germany. http://hdl.handle.net/20.500.12708/196149</div>
</div>
-
dc.identifier.uri
http://hdl.handle.net/20.500.12708/196149
-
dc.description.abstract
Silver iodide (AgI) is one of the most effective ice nucleating agents due to its structural similarity with hexagonal ice. Many countries worldwide utilize AgI for cloud seeding in weather modification programs, such as drought management or hail and storm suppression. From a surface point of view, however, a puzzling conundrum remains: The basal (0001) cleavage plane, lattice-matched to ice, is thermodynamically unstable. An AgI crystal lacks inversion symmetry and terminates with only silver atoms on one side and only iodine on the other side, causing a nonzero electrical dipole perpendicular to the surface. To compensate polarity, the surface is expected to rearrange at the atomic level. How can AgI promote heterogeneous ice nucleation if its surface is altered? Noncontact atomic force microscopy provides a direct visualization of the polarity compensation mechanism. Atomically resolved images reveal two distinct surface reconstructions of the differently (Ag+ and I−) terminated surfaces and show that only one of them assumes a surface structure that allows an epitaxial relationship with hexagonal ice.
en
dc.language.iso
en
-
dc.subject
ice nucleation
en
dc.subject
silver iodide
en
dc.subject
polarity
en
dc.subject
surface structure
en
dc.title
Silver Iodide: Polar Surfaces as Ice Nuclei?
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.contributor.affiliation
Bielefeld University, Germany
-
dc.contributor.affiliation
Bielefeld University, Germany
-
dc.type.category
Presentation
-
tuw.researchTopic.id
M1
-
tuw.researchTopic.name
Surfaces and Interfaces
-
tuw.researchTopic.value
100
-
tuw.publication.orgunit
E134-05 - Forschungsbereich Surface Physics
-
tuw.author.orcid
0000-0002-1562-7303
-
tuw.author.orcid
0000-0003-3373-9357
-
tuw.author.orcid
0000-0001-7101-1055
-
tuw.event.name
DPG 2024 - German Physical Society annual meeting
en
tuw.event.startdate
17-03-2024
-
tuw.event.enddate
22-03-2024
-
tuw.event.online
On Site
-
tuw.event.type
Event for scientific audience
-
tuw.event.place
Berlin
-
tuw.event.country
DE
-
tuw.event.presenter
Balajka, Jan
-
wb.sciencebranch
Physik, Astronomie
-
wb.sciencebranch.oefos
1030
-
wb.sciencebranch.value
100
-
item.openairetype
conference presentation
-
item.cerifentitytype
Publications
-
item.grantfulltext
none
-
item.languageiso639-1
en
-
item.openairecristype
http://purl.org/coar/resource_type/R60J-J5BD
-
item.fulltext
no Fulltext
-
crisitem.author.dept
E134-05 - Forschungsbereich Surface Physics
-
crisitem.author.dept
E134-05 - Forschungsbereich Surface Physics
-
crisitem.author.dept
Max Planck Institute for Polymer Research, Germany
