Design of a Tactile Display Based on a High Power CMUT Array

Chouvardas, Vasilios G.; Miliou, Amalia; Hatalis, Miltiadis N.

doi:10.1109/pci.2012.61

Cited by 3 publications

(4 citation statements)

References 13 publications

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“…As a result, CMUTs are an alternative to piezo-based transducers and attract major research interest. Besides medical imaging and NDT, CMUTs were also widely studied for extensive applications such as blood flow measurement, distance sensing, pressure sensing, fluid properties measurement and cancer treatment [3,[13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28].…”

Section: Motivationmentioning

confidence: 99%

Fabrication of capacitive micromachined ultrasonic transducers based on adhesive wafer bonding technique

Wong

Chen

et al. 2016

J. Micromech. Microeng.

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To my supervisor, Prof. Yeow. Thank you for giving me the opportunity to work in AMNDL. Thank you for supporting all the equipment/materials, and facility accesses. I know how expensive they are and without you, I would not have been able to execute my ideas and finish the projects. To my committees, Prof. Huissoon, Prof. Nieva and Prof. Stashuk, Thank you for all the comments and suggestions on my project. Additionally, I would say thank you to Prof. Huissoon. You gave me the to come to study in Waterloo and I will never forget the time I received your email where you asked me to come to Canada. To Prof. Cretu, thank you for agreeing to be the external committee and travelling to Waterloo for my defence. The CMUTs in this thesis were fabricated in G2N and TNFC. I would say thank Richard,

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Section: Motivationmentioning

confidence: 99%

Fabrication of capacitive micromachined ultrasonic transducers based on adhesive wafer bonding technique

Wong

Chen

et al. 2016

J. Micromech. Microeng.

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“…As a result, the full exploitation of the benefits of cooperative control in micro-actuator systems is still far from being achieved. Examples of micro-actuator application areas that may benefit from new features introduced by cooperative control methods include haptics [25,26], wearables [27], and reconfigurable displays [28].…”

Section: Introductionmentioning

confidence: 99%

A Review of Cooperative Actuator and Sensor Systems Based on Dielectric Elastomer Transducers

Rizzello

2023

Actuators

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This paper presents an overview of cooperative actuator and sensor systems based on dielectric elastomer (DE) transducers. A DE consists of a flexible capacitor made of a thin layer of soft dielectric material (e.g., acrylic, silicone) surrounded with a compliant electrode, which is able to work as an actuator or as a sensor. Features such as large deformation, high compliance, flexibility, energy efficiency, lightweight, self-sensing, and low cost make DE technology particularly attractive for the realization of mechatronic systems that are capable of performance not achievable with alternative technologies. If several DEs are arranged in an array-like configuration, new concepts of cooperative actuator/sensor systems can be enabled, in which novel applications and features are made possible by the synergistic operations among nearby elements. The goal of this paper is to review recent advances in the area of cooperative DE systems technology. After summarizing the basic operating principle of DE transducers, several applications of cooperative DE actuators and sensors from the recent literature are discussed, ranging from haptic interfaces and bio-inspired robots to micro-scale devices and tactile sensors. Finally, challenges and perspectives for the future development of cooperative DE systems are discussed.

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Section: Introductionmentioning

confidence: 99%

“…Various actuation methods (e.g., electromechanical, electromagnetic, piezoelectric crystal, pneumatic actuation) have been designed to present spatial and temporal information, such as object shape, surface texture, movement direction, and emotion [2,3]. Early tactile displays used to present text, graphic shapes, maps, and images to the fingertips typically consisted of arrays of actuators that raised and lowered pins through holes in a flat surface [2,3]. More recent displays consisting of electromechanical units that generate inertial, rotational, or linear vibration have been effective in conveying navigation information to aid individuals with visual impairments [4,5], attitude information or threat warning cues to aircraft pilots [6,7], orientation and proximity information to foot soldiers [8], and directional information to drivers [9,10].…”

Section: Introductionmentioning

confidence: 99%

The effects of actuator selection on non-volitional postural responses to torso-based vibrotactile stimulation

Lee

Martin

Sienko

2013

J NeuroEngineering Rehabil

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BackgroundTorso-based vibrotactile feedback may significantly reduce postural sway in balance-compromised adults during quiet standing or in response to perturbations. However, natural non-volitional postural responses to vibrotactile stimulation applied to the torso remain unknown.MethodsThe primary goal of this study was to determine, for two types of actuators (tactors) and in the absence of instruction, whether vibrotactile stimulation induces a directional postural shift as a function of stimulation location. Eleven healthy young adults (20 – 29 years old) were asked to maintain an upright erect posture with feet hip-width apart and eyes closed. Two types of tactors, Tactaid and C2, which differ in design and stimulation strength, were placed on the skin over the right and left external oblique, internal oblique, and erector spinae muscles in a horizontal plane corresponding approximately to the L4/L5 level. Each tactor of the same type was activated twice randomly for each individual location and twice simultaneously for all locations at a frequency of 250 Hz for a period of 5 s.ResultsVibration applied over the internal oblique and erector spinae muscle locations induced a postural shift in the direction of the stimulation regardless of the tactor type. For the aforementioned four locations, the root-mean-square (RMS) and power spectral density (PSD) of the body sway in both the A/P and M/L directions were also significantly greater during the vibration than before or after, and were greater for the C2 tactors than for the Tactaid tactors. However, simultaneous activation of all tactors or those over the external oblique muscle locations did not produce significant postural responses regardless of the tactor type.ConclusionThe results suggest that the use of a torso-based vibrotactile sensory augmentation display should carefully consider the tactor type as well as the instruction of corrective movements. Attractive instructional cues (“move in the direction of the vibration”) are compatible with the observed non-volitional response to stimulation and may facilitate postural adjustments during vibrotactile biofeedback balance applications.

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Design of a Tactile Display Based on a High Power CMUT Array

Cited by 3 publications

References 13 publications

Fabrication of capacitive micromachined ultrasonic transducers based on adhesive wafer bonding technique

Fabrication of capacitive micromachined ultrasonic transducers based on adhesive wafer bonding technique

A Review of Cooperative Actuator and Sensor Systems Based on Dielectric Elastomer Transducers

The effects of actuator selection on non-volitional postural responses to torso-based vibrotactile stimulation

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