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@ARTICLE{Sirin:867968,
author = {Sirin, Omer and Ayyildiz, Mehmet and Persson, B. N. J. and
Basdogan, Cagatay},
title = {{E}lectroadhesion with application to touchscreens},
journal = {Soft matter},
volume = {15},
number = {8},
issn = {1744-6848},
address = {London},
publisher = {Royal Soc. of Chemistry},
reportid = {FZJ-2019-06561},
pages = {1758 - 1775},
year = {2019},
abstract = {There is growing interest in touchscreens displaying
tactile feedback due to their tremendous potential in
consumer electronics. In these systems, the friction between
the user's fingerpad and the surface of the touchscreen is
modulated to display tactile effects. One of the promising
techniques used in this regard is electrostatic actuation.
If, for example, an alternating voltage is applied to the
conductive layer of a surface capacitive touchscreen, an
attractive electrostatic force is generated between the
finger and the surface, which results in an increase in
frictional forces acting on the finger moving on the
surface. By altering the amplitude, frequency, and waveform
of this signal, a rich set of tactile effects can be
generated on the touchscreen. Despite the ease of
implementation and its powerful effect on our tactile
sensation, the contact mechanics leading to an increase in
friction due to electroadhesion has not been fully
understood yet. In this paper, we present experimental
results for how the friction between a finger and a
touchscreen depends on the electrostatic attraction and the
applied normal pressure. The dependency of the
finger–touchscreen interaction on the applied voltage and
on several other parameters is also investigated using a
mean field theory based on multiscale contact mechanics. We
present detailed theoretical analysis of how the area of
real contact and the friction force depend on contact
parameters, and show that it is possible to further augment
the friction force, and hence the tactile feedback displayed
to the user by carefully choosing those parameters.},
cin = {IAS-1 / PGI-1},
ddc = {530},
cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106},
pnm = {141 - Controlling Electron Charge-Based Phenomena
(POF3-141)},
pid = {G:(DE-HGF)POF3-141},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30702137},
UT = {WOS:000459482400002},
doi = {10.1039/C8SM02420K},
url = {https://juser.fz-juelich.de/record/867968},
}