Recent Advances and Opportunities of Active Materials for Haptic Technologies in Virtual and Augmented Reality (Adv. Funct. Mater. 39/2021)

Yang, Tae‐Heon; Kim, Jin Ryong; Jin, Hanbit; Gil, Hyunjae; Koo, Jeong‐Hoi; Kim, Hye Jin

doi:10.1002/adfm.202170292

Cited by 16 publications

(9 citation statements)

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“…This transmissive characteristic could simplify integration with commercial devices, where it could potentially be part of a thin partition or window. Our experimental demonstrations in this work operate at 40 kHz, thereby opening potential ultrasound applications, such as integration with commercial devices that utilize ultrasound frequencies for midair haptics, [43,44] acoustophoretic volumetric images, [6] or energy harvesting. [17] It is also possible to scale the acoustic device to lower frequencies for implementation with larger wavelengths.…”

Section: Doi: 101002/adem202301339mentioning

confidence: 99%

Multilateral Sound Manipulation Using Magnetically Tunable Apertures

Bansal,

Choi,

Subramanian

2024

Adv Eng Mater

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In recent years, planar aperture‐based acoustic devices have been investigated due to their thin form factor, high effective transmission, and sound modulation capability. Moreover, reconfigurable, and tunable devices are being continuously researched to enable multiple degrees of freedom in real‐time. Here, we present an aperture‐based acoustic device that enables tunable multilateral ultrasonic operation. Sound waves are manipulated in multiple directions by continuously tuning aperture width or length, using a magnetically controlled rod. We exploit the position, orientation, and geometrical properties of the rod (i.e., length, topographical curvature) to create a varied interface for the impinging sound. Through experiments and simulations, we demonstrate acoustic wave steering in different orthogonal planes and acoustic switching using a single tunable device unit. Furthermore, we implement different four‐unit device configurations for tunable beam‐formation and tunable acoustic focusing applications by utilizing the acoustic anisotropy of our system. Our tunable dynamic acoustic device is scalable to audible frequencies and enables tilted operation. This straightforward and accessible proof‐of‐concept opens a paradigm for exploring multifunctional aperture‐based designs with greater degrees of freedom, bringing us a step closer towards practical applications such as acoustic device integration with walls, window panels, and other commercial products for tunable sound transmission.This article is protected by copyright. All rights reserved.

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Section: Doi: 101002/adem202301339mentioning

confidence: 99%

Multilateral Sound Manipulation Using Magnetically Tunable Apertures

Bansal,

Choi,

Subramanian

2024

Adv Eng Mater

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“…Starting from the conventional control terminals, such as joystick, keyboard, and touchpad, there are enormous efforts focus on the wearable devices to facilitate the intuitive human machine interactions and the immersive haptic feedback. [ 188–195 ]…”

Section: Applications Of Wearable Sensors and Electronics In Green Earthmentioning

confidence: 99%

Triboelectric Nanogenerator Enabled Wearable Sensors and Electronics for Sustainable Internet of Things Integrated Green Earth

Yang

Guo

Zhu

et al. 2022

Advanced Energy Materials

155

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as the components of the IoT network, and they will generate massive data with multidimensions, higher velocity, and improved heterogeneity. [2] Benefiting from this, our world is developing toward a smarter and more well-knit green earth, covering essential blocks like smart homes, smart agriculture, smart cities, smart industries as well as outer space and airlines. [3] In the green earth, the IoT systems are promising to be spread in every smart area, consisting of various sensing modules, signal processing modules, power management modules, power supply modules, etc. Sensing modules are applied to collect abundant information from the target objects or environment, such as temperature, humidity, light intensity, gas concentration, pressure, etc. And the signal processing modules help with the data transmission, processing, and analysis to connect and exchange information with other devices or systems to provide an optimal command to the target object or environment. In addition, the power management modules and power supply modules are to provide the most efficient solutions to reduce the overall power consumption in the operations of the IoT systems. [4][5][6] Thus, looking at the whole earth, it is to be closely connected with the IoT systems, enabling information transfer and communication over the strong network.Narrowing down to a single object like the human body, a single animal, or a robot, wearable electronics have attracted increasing research interest owing to their promising applications in real-time and precious monitoring and tracking of user's preferences and habits on the green earth. [7][8][9][10] Conventional wearable electronics involve smart watches, smart glasses, smart helmets, etc., while most of them are fabricated from nonflexible or rigid materials, resulting in limited wearable comfort, device lifetime, latency response, and loss of sensing information. [11][12][13] To address these issues, the current research focuses on the investigation of sensing materials with flexibility or even stretchability, breathability, washability, lightweight, adhesiveness, etc., enabling improved wearing comfort and long-term wearability. [14][15][16][17] Besides the wearability of the modules in the IoT system, energy issue is within wide research interest and concern as one of the urgent issues contemporarily. Batteries, as the dominant choices for power supply modules, are now revealed asThe advancement of the Internet of Things/5G infrastructure requires a lowcost ubiquitous sensory network to realize an autonomous system for information collection and processing, aiming at diversified applications ranging from healthcare, smart home, industry 4.0 to environmental monitoring. The triboelectric nanogenerator (TENG) is considered the most promising technology due to its self-powered, cost-effective, and highly customizable advantages. Through the use of wearable electronic devices, advanced TENG technology is developed as a core technology enabling self-powered sensors, power supplies, and data comm...

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“…Furthermore, environmental factors like moisture, dust, and temperature could compromise their long-term use, affecting their actuation performance stability. [11][12][13] These factors may easily be encountered in common scenarios such as sweaty hands, humid environments, poor storage conditions, and changing seasons. When these actuators fail, they are often discarded, contributing to electronic waste and the depletion of resources required for manufacturing.…”

Section: Introductionmentioning

confidence: 99%