Squeeze film effect for the design of an ultrasonic tactile plate

Biet, Mélisande; Giraud, Frédéric; Lemaire‐Semail, Betty

doi:10.1109/tuffc.2007.596

Cited by 171 publications

(141 citation statements)

References 12 publications

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“…Flexural vibrations at this ultrasonic frequency create a squeeze film of air between the plate surface and the finger, thus reducing the friction between the plate and the fingertip as the amplitude of the applied voltage is increased. The mechanisms of friction reduction have been discussed more fully in Biet et al [7]. We performed a preliminary user study and found that the squeeze film effect between the glass plate and the finger starts to be felt at a vibration amplitude of around 1.5 microns.…”

Section: Tactile Pattern Display (Tpad)mentioning

confidence: 80%

Psychophysical evaluation of a variable friction tactile interface

Samur¹,

Colgate²,

Peshkin³

2009

SPIE Proceedings

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This study explores the haptic rendering capabilities of a variable friction tactile interface through psychophysical experiments. In order to obtain a deeper understanding of the sensory resolution associated with the Tactile Pattern Display (TPaD), friction discrimination experiments are conducted. During the experiments, subjects are asked to explore the glass surface of the TPaD using their bare index fingers, to feel the friction on the surface, and to compare the slipperiness of two stimuli, displayed in sequential order. The fingertip position data is collected by an infrared frame and normal and translational forces applied by the finger are measured by force sensors attached to the TPaD. The recorded data is used to calculate the coefficient of friction between the fingertip and the TPaD. The experiments determine the just noticeable difference (JND) of friction coefficient for humans interacting with the TPaD.

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Section: Tactile Pattern Display (Tpad)mentioning

confidence: 80%

Psychophysical evaluation of a variable friction tactile interface

Samur¹,

Colgate²,

Peshkin³

2009

SPIE Proceedings

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“…This is easily verified in figure 2, where modes with less neighbors appear to be wider, so we will eliminate vibration modes at 25.7kHz and 43.2kHz. Finally, we use the vibration mode at 31.2kHz because it is at a lower frequency and produces then a larger half-wavelength [3]. The simulation results of this vibration mode are depicted in figure 3.…”

Section: Plate's Designmentioning

confidence: 99%

“…Winfield et al used a small piezoelectric patch completely covered by a glass disc [15], while Biet et al designed a rectangular tactile plate made with copper-beryllium [3]. Both of these devices render tactile sensations on a large area by using a flexural vibration mode with a wavelength of about 3cm.…”

Section: Introductionmentioning

confidence: 99%

Design of a transparent tactile stimulator

Giraud¹,

Amberg²,

Lemaire‐Semail³

et al. 2012

2012 IEEE Haptics Symposium (HAPTICS)

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“…A more recently introduced technique is to modulate the friction force between the finger and a mechanically grounded active surface. The friction force modulation can be achieved, for instance, by electrostatic fields [26], ultrasonic amplitude modulation [27], surface acoustic waves [28] or with the squeezed film effect [29], [30].…”

Section: Roughness and Texture In Manufacturing And Virtual Realitymentioning

confidence: 99%

The Spatial Spectrum of Tangential Skin Displacement Can Encode Tactual Texture

2011

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Abstract-The tactual scanning of five naturalistic textures was recorded with an apparatus capable of measuring the tangential interaction force with a high degree of temporal and spatial resolution. The resulting signal showed that the transformation from the geometry of a surface to the force of traction, and hence to the skin deformation experienced by a finger is a highly nonlinear process. Participants were asked to identify simulated textures reproduced by stimulating their fingers with rapid, imposed lateral skin displacements as a function of net position. They performed the identification task with a high degree of success, yet not perfectly. The fact that the experimental conditions eliminated many aspects of the interaction, including low-frequency finger deformation, distributed information, as well as normal skin movements, shows that the nervous system is able to rely on only two cues: amplitude and spectral information. The examination of the "spatial spectrograms" of the imposed lateral skin displacement revealed that texture could be represented spatially despite being sensed through time and that these spectrograms were distinctively organized into what could be called "spatial formants". This finding led us to speculate that the mechanical properties of the finger enables spatial information to be used for perceptual purposes in humans without any distributed sensing, a principle that could be applied to robots.

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Squeeze film effect for the design of an ultrasonic tactile plate

Cited by 171 publications

References 12 publications

Psychophysical evaluation of a variable friction tactile interface

Psychophysical evaluation of a variable friction tactile interface

Design of a transparent tactile stimulator

The Spatial Spectrum of Tangential Skin Displacement Can Encode Tactual Texture

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