Design of a transparent tactile stimulator

Giraud, Frédéric; Amberg, Michel; Lemaire‐Semail, Betty; Casiez, Géry

doi:10.1109/haptic.2012.6183835

Cited by 33 publications

(27 citation statements)

References 13 publications

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“…The modulation of friction by the application of ultrasonic vibration or by electrostatic adhesion is a leading technological option for flatscreen haptic displays (31,32). They rely on the ability to reduce or augment the overall friction of the screen.…”

Section: Discussionmentioning

confidence: 99%

Why pens have rubbery grips

Dzidek

Bochereau

Johnson

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

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The process by which human fingers gives rise to stable contacts with smooth, hard objects is surprisingly slow. Using highresolution imaging, we found that, when pressed against glass, the actual contact made by finger pad ridges evolved over time following a first-order kinetics relationship. This evolution was the result of a two-stage coalescence process of microscopic junctions made between the keratin of the stratum corneum of the skin and the glass surface. This process was driven by the secretion of moisture from the sweat glands, since increased hydration in stratum corneum causes it to become softer. Saturation was typically reached within 20 s of loading the contact, regardless of the initial moisture state of the finger and of the normal force applied. Hence, the gross contact area, frequently used as a benchmark quantity in grip and perceptual studies, is a poor reflection of the actual contact mechanics that take place between human fingers and smooth, impermeable surfaces. In contrast, the formation of a steady-state contact area is almost instantaneous if the counter surface is soft relative to keratin in a dry state. It is for this reason that elastomers are commonly used to coat grip surfaces.finger friction | true contact area kinetics | biotribology | fingerprints

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Section: Discussionmentioning

confidence: 99%

Why pens have rubbery grips

Dzidek

Bochereau

Johnson

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

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“…This attracted the interest of researchers to implement a simulative approach similar to vision or hearing, and to recreate the touch sensation. Some modern devices are able to reproduce the illusion of the textured surfaces under the finger [1], [2]. Some techniques are based on friction control between a surface and the finger.…”

Section: Introductionmentioning

confidence: 99%

Preliminary design of a multi-touch ultrasonic tactile stimulator

Ghenna

Giraud

Giraud-Audine

et al. 2015

2015 IEEE World Haptics Conference (WHC)

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International audience— This paper presents a method to control ultrasonic waves on a beam, allowing to obtain a Multi-touch ultrasonic tactile stimulation in two points, to give the sensation to two fingers, from two piezoelectric transducers. The multi-modal approach and the vector control method are used to regulate the vibration amplitude, in order to modulate the friction coefficient with the fingers. An analytical modelling is presented, with experimental validation. Finally a psychophysical experiment shows that a multi-touch ultrasonic tactile stimulation is possible

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“…When it comes to textures or small tactile variations experienced while sliding a finger on a smooth surface, non-linear acoustic pumping is able modulate friction by vibrating the surface at ultrasonic frequencies to create an air film between the surface and the finger [7,12,2,4,21]. Electrovibration takes advantage of electrostatic forces to attract the finger toward the surface, resulting in an increase of friction [14,18,1].…”

Section: Introductionmentioning

confidence: 99%

Localized tactile stimulation by time-reversal of flexural waves: Case study with a thin sheet of glass

Hudin

Lozada

Hayward

2013

2013 World Haptics Conference (WHC)

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This paper addresses the issue of producing localized tactile stimuli on a transparent surface. An approach based on time reversal of acoustic waves is presented and implemented on a thin glass surface actuated by piezoelectric transducers located at the periphery. The physical performance measurement, completed by a user study demonstrates the ability to provide localised and perceivable tactile stimulation.

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Design of a transparent tactile stimulator

Cited by 33 publications

References 13 publications

Why pens have rubbery grips

Why pens have rubbery grips

Preliminary design of a multi-touch ultrasonic tactile stimulator

Localized tactile stimulation by time-reversal of flexural waves: Case study with a thin sheet of glass

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