PMID- 31944995
OWN - NLM
STAT- MEDLINE
DCOM- 20201110
LR  - 20201110
IS  - 2329-4051 (Electronic)
IS  - 1939-1412 (Linking)
VI  - 13
IP  - 1
DP  - 2020 Jan-Mar
TI  - Step-Change in Friction Under Electrovibration.
PG  - 137-143
LID - 10.1109/TOH.2020.2966992 [doi]
AB  - Rendering tactile effects on a touch screen via electrovibration has many 
      potential applications. However, our knowledge on tactile perception of change in 
      friction and the underlying contact mechanics are both very limited. In this 
      article, we investigate the tactile perception and the contact mechanics for a 
      step change in friction under electrovibration during a relative sliding between 
      a finger and the surface of a capacitive touch screen. First, we conduct 
      magnitude estimation experiments to investigate the role of normal force and 
      sliding velocity on the perceived tactile intensity for a step increase and 
      decrease in friction, called rising friction (RF) and falling friction (FF). To 
      investigate the contact mechanics involved in RF and FF, we then measure the 
      frictional force, the apparent contact area, and the strains acting on the 
      fingerpad during sliding at a constant velocity under three different normal 
      loads using a custom-made experimental set-up. The results show that the 
      participants perceived RF stronger than FF, and both the normal force and sliding 
      velocity significantly influenced their perception. These results are supported 
      by our mechanical measurements; the relative change in friction, the apparent 
      contact area, and the strain in the sliding direction were all higher for RF than 
      those for FF, especially for low normal forces. Taken together, our results 
      suggest that different contact mechanics take place during RF and FF due to the 
      viscoelastic behavior of fingerpad skin, and those differences influence our 
      tactile perception of a step change in friction.
FAU - Ozdamar, Idil
AU  - Ozdamar I
FAU - Alipour, M Reza
AU  - Alipour MR
FAU - Delhaye, Benoit P
AU  - Delhaye BP
FAU - Lefevre, Philippe
AU  - Lefevre P
FAU - Basdogan, Cagatay
AU  - Basdogan C
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20200115
PL  - United States
TA  - IEEE Trans Haptics
JT  - IEEE transactions on haptics
JID - 101491191
SB  - IM
MH  - Adult
MH  - Electric Stimulation/*methods
MH  - *Fingers/physiology
MH  - *Friction
MH  - Humans
MH  - Skin Physiological Phenomena
MH  - *Touch Perception
MH  - *Vibration
MH  - Young Adult
EDAT- 2020/01/17 06:00
MHDA- 2020/11/11 06:00
CRDT- 2020/01/17 06:00
PHST- 2020/01/17 06:00 [pubmed]
PHST- 2020/11/11 06:00 [medline]
PHST- 2020/01/17 06:00 [entrez]
AID - 10.1109/TOH.2020.2966992 [doi]
PST - ppublish
SO  - IEEE Trans Haptics. 2020 Jan-Mar;13(1):137-143. doi: 10.1109/TOH.2020.2966992. 
      Epub 2020 Jan 15.