TeslaTouch: electrovibration for touch surfaces
03 Oct 2010-pp 283-292
TL;DR: The proposed technology is based on the electrovibration principle, does not use any moving parts and provides a wide range of tactile feedback sensations to fingers moving across a touch surface, which enables the design of a wide variety of interfaces that allow the user to feel virtual elements through touch.
Abstract: We present a new technology for enhancing touch interfaces with tactile feedback. The proposed technology is based on the electrovibration principle, does not use any moving parts and provides a wide range of tactile feedback sensations to fingers moving across a touch surface. When combined with an interactive display and touch input, it enables the design of a wide variety of interfaces that allow the user to feel virtual elements through touch. We present the principles of operation and an implementation of the technology. We also report the results of three controlled psychophysical experiments and a subjective user evaluation that describe and characterize users' perception of this technology. We conclude with an exploration of the design space of tactile touch screens using two comparable setups, one based on electrovibration and another on mechanical vibrotactile actuation.
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13 May 2012
TL;DR: The current status of flexible electronics is reviewed and the future promise of these pervading technologies in healthcare, environmental monitoring, displays and human-machine interactivity, energy conversion, management and storage, and communication and wireless networks is predicted.
Abstract: Thin-film electronics in its myriad forms has underpinned much of the technological innovation in the fields of displays, sensors, and energy conversion over the past four decades. This technology also forms the basis of flexible electronics. Here we review the current status of flexible electronics and attempt to predict the future promise of these pervading technologies in healthcare, environmental monitoring, displays and human-machine interactivity, energy conversion, management and storage, and communication and wireless networks.
881 citations
08 Oct 2013
TL;DR: This work investigates the desirable properties of an acoustically transparent display and demonstrates that the system is capable of creating multiple localised points of feedback in mid-air, and shows that feedback points with different tactile properties can be identified at smaller separations.
Abstract: We introduce UltraHaptics, a system designed to provide multi-point haptic feedback above an interactive surface. UltraHaptics employs focused ultrasound to project discrete points of haptic feedback through the display and directly on to users' unadorned hands. We investigate the desirable properties of an acoustically transparent display and demonstrate that the system is capable of creating multiple localised points of feedback in mid-air. Through psychophysical experiments we show that feedback points with different tactile properties can be identified at smaller separations. We also show that users are able to distinguish between different vibration frequencies of non-contact points with training. Finally, we explore a number of exciting new interaction possibilities that UltraHaptics provides.
429 citations
Cites background or methods from "TeslaTouch: electrovibration for to..."
...Frequency JND (just-noticeable-difference) thresholds have found that the hand is able to discriminate between 12% to 25% difference in frequencies, and the amount of this difference depends on the reference frequency [2]....
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...This can be achieved through vibration [2, 4] or by physically changing the shape of the surface [19, 20, 15]....
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...One direction has been to vary the friction coef.cient of the surface, either through vibrating the surface with ultrasound [4] or through the use of electrovibra tion, as demonstrated by TeslaTouch [2]....
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...One direction has been to vary the friction coefficient of the surface, either through vibrating the surface with ultrasound [4] or through the use of electrovibration, as demonstrated by TeslaTouch [2]....
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05 May 2012
TL;DR: The rich capabilities of Touché are demonstrated with five example setups from different application domains and experimental studies that show gesture classification accuracies of 99% are achievable with the technology.
Abstract: Touche proposes a novel Swept Frequency Capacitive Sensing technique that can not only detect a touch event, but also recognize complex configurations of the human hands and body. Such contextual information significantly enhances touch interaction in a broad range of applications, from conventional touchscreens to unique contexts and materials. For example, in our explorations we add touch and gesture sensitivity to the human body and liquids. We demonstrate the rich capabilities of Touche with five example setups from different application domains and conduct experimental studies that show gesture classification accuracies of 99% are achievable with our technology.
338 citations
07 May 2011
TL;DR: In a series of experiments and evaluations, it is demonstrated that Tactile Brush is robust and can reliably generate a wide variety of moving tactile sensations for a broad range of applications.
Abstract: Tactile Brush is an algorithm that produces smooth, two-dimensional tactile moving strokes with varying frequency, intensity, velocity and direction of motion. The design of the algorithm is derived from the results of psychophysical investigations of two tactile illusions -- apparent tactile mo-tion and phantom sensations. Combined together they allow for the design of high-density two-dimensional tactile displays using sparse vibrotactile arrays. In a series of experiments and evaluations we demonstrate that Tactile Brush is robust and can reliably generate a wide variety of moving tactile sensations for a broad range of applications.
272 citations
21 Jul 2013
TL;DR: The details of the AIREAL design and control, experimental evaluations of the device's performance, as well as an exploration of the application space of free air haptic displays are reported, believing that the results reported are generalizable and will inform the design of haptic shows based on alternative principles offree air tactile actuation.
Abstract: AIREAL is a novel haptic technology that delivers effective and expressive tactile sensations in free air, without requiring the user to wear a physical device. Combined with interactive computers graphics, AIREAL enables users to feel virtual 3D objects, experience free air textures and receive haptic feedback on gestures performed in free space. AIREAL relies on air vortex generation directed by an actuated flexible nozzle to provide effective tactile feedback with a 75 degrees field of view, and within an 8.5cm resolution at 1 meter. AIREAL is a scalable, inexpensive and practical free air haptic technology that can be used in a broad range of applications, including gaming, mobile applications, and gesture interaction among many others. This paper reports the details of the AIREAL design and control, experimental evaluations of the device's performance, as well as an exploration of the application space of free air haptic displays. Although we used vortices, we believe that the results reported are generalizable and will inform the design of haptic displays based on alternative principles of free air tactile actuation.
237 citations
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TL;DR: A technique for creating a touch-sensitive input device which allows multiple, simultaneous users to interact in an intuitive fashion and results obtained with a small prototype device are presented.
Abstract: A technique for creating a touch-sensitive input device is proposed which allows multiple, simultaneous users to interact in an intuitive fashion. Touch location information is determined independently for each user, allowing each touch on a common surface to be associated with a particular user. The surface generates location dependent, modulated electric fields which are capacitively coupled through the users to receivers installed in the work environment. We describe the design of these systems and their applications. Finally, we present results we have obtained with a small prototype device.
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23 Oct 2005
TL;DR: A simple, inexpensive, and scalable technique for enabling high-resolution multi-touch sensing on rear-projected interactive surfaces based on frustrated total internal reflection is described.
Abstract: This paper describes a simple, inexpensive, and scalable technique for enabling high-resolution multi-touch sensing on rear-projected interactive surfaces based on frustrated total internal reflection. We review previous applications of this phenomenon to sensing, provide implementation details, discuss results from our initial prototype, and outline future directions.
1,151 citations
"TeslaTouch: electrovibration for to..." refers background in this paper
...ternal reflection [12] and surface acoustic tracking, among others....
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Book•
01 Dec 2015
TL;DR: The theory of signal detection has been studied extensively in the literature, see as mentioned in this paper for an overview. But the application of TSD is limited to the measurement of sensory attributes and discrimination scales.
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1,088 citations