Hybrid display of realistic tactile sense using ultrasonic vibrator and force display

Shiokawa, Yuta; Tazo, Atsushi; Konyo, Masashi; Maéno, Takashi

doi:10.1109/iros.2008.4650776

Cited by 10 publications

(9 citation statements)

References 10 publications

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“…According to the experimental result shown in Fig. 3 of [3] the friction between finger and flat oscillator surface disappears (which implies that the finger and the oscillator surface becomes contactless) when the displacement amplitude is 5m. We calculated the mean distance between the finger and the oscillator plate from the high squeeze number theory in [1] as 22m in this situation.…”

Section: Resultsmentioning

confidence: 95%

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Do Silicon Ultrasonic Transducers Dream of Becoming Mobile Tactile Display?

2016

IJCCIE

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Abstract-In today's research for the better human-computer interfaces, tactile sensation is one of the most technologically immature, yet the most intensely studied topics. Ultrasonic sound waves as the sensation generator are commonly adopted. Conventional ultrasonic sound source devices employ piezoelectric transducers and thus suffer from the cost and integration issues. In this work we examined theoretically the possibility of exploiting the capacitive micromachined ultrasonic transducers (CMUTs) as a tactile display device that generates two-dimensional pressure distribution above their surface via near-field acoustic radiation pressure effect. We found that with slight modification to existing CMUT geometry, 300Pa necessary for invoking tactile sensation is achieved with the spatial resolution of 3.8mm close to the average two-point discrimination threshold of 3mm. The possibility to go further below the 3mm threshold by halving the CMUT radius is also pointed out.

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Section: Resultsmentioning

confidence: 95%

“…Representative examples among many are such as a single oscillator-based tactile display combined with force display [3] and a scanning-type display with phased transducer arrays [4]. The former uses near-field acoustic radiation pressure for sensation which is energy-efficient and easy to generate.…”

Section: Introductionmentioning

confidence: 99%

Do Silicon Ultrasonic Transducers Dream of Becoming Mobile Tactile Display?

2016

IJCCIE

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“…Mechanical stimuli were applied to human skin by a tactile display system equipped with a Langevin-type ultrasonic vibrator (SEDECO Co., Tokyo, Japan), an analogue I/O terminal (AIO-160802AY-USB, CONTEC Co., Osaka, Japan), a differential function generator (Wave Factory WF1946A, NF Co., Yokohama, Japan) and power amplifer (HSA4011, NF Co., Yokohama, Japan; electronic supplementary material, figure S3) [ 42 ]. The frequency and maximum amplitude were 28.20 kHz and 20 µm, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…The frequency and maximum amplitude were 28.20 kHz and 20 µm, respectively. In our previous studies, the mechanical stimuli under these conditions were suitable to raise some tactile feels: bumpy/flat, rough/fine and hard/soft feels [ 42 ]. The width of the contact surface was 30 mm.…”

Section: Methodsmentioning

confidence: 99%

“…The position of a finger was evaluated by an infrared (IR) marker, and an IR sensor was used to control the ultrasonic vibrations. The ultrasonic vibrator was switched on and off in conjunction with the moving distance determined with an IR marker [ 42 ]. We studied the effects of the term T, which was a total movement distance in an on-period and an off-period, and the duty ratio τ on the tactile texture when (i) duty ratio τ = 0; (ii) T = 1 mm; τ = 0.5; (iii) T = 10 mm, τ = 0.5; (iv) τ = 1.…”

Section: Methodsmentioning

confidence: 99%

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How to identify water from thickener aqueous solutions by touch

Nonomura

Miura

Miyashita

et al. 2011

J. R. Soc. Interface.

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Water detection is one of the most crucial psychological processes for many animals. However, nobody knows the perception mechanism of water through our tactile sense. In the present study, we found that a characteristic frictional stimulus with large acceleration is one of the cues to differentiate water from water contaminated with thickener. When subjects applied small amounts of water to a glass plate, strong stick-slip phenomena with a friction force of 0.46 ± 0.30 N and a vertical force of 0.57 ± 0.36 N were observed at the skin surface, as shown in previous studies. Surprisingly, periodic shears with acceleration seven times greater than gravitational acceleration occurred during the application process. Finite-element analyses predicted that these strong stimuli could activate tactile receptors: Meissner's corpuscle and Pacinians. When such stimuli were applied to the fingertips by an ultrasonic vibrator, a water-like tactile texture was perceived by some subjects, even though no liquid was present between the fingertip and the vibrator surface. These findings could potentially be applied in the following areas: materials science, information technology, medical treatment and entertainment.

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Characterization of Ultrasound Tactile Display

Κορρές

Eid

2016

Haptics: Perception, Devices, Control, and Applications

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Hybrid display of realistic tactile sense using ultrasonic vibrator and force display

Cited by 10 publications

References 10 publications

Do Silicon Ultrasonic Transducers Dream of Becoming Mobile Tactile Display?

Do Silicon Ultrasonic Transducers Dream of Becoming Mobile Tactile Display?

How to identify water from thickener aqueous solutions by touch

Characterization of Ultrasound Tactile Display

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