Super-resolution wearable electrotactile rendering system

Lin, Weikang; Zhang, Dongsheng; Lee, Wang Wei; Li, Xuelong; Hong, Ying; Pan, Qiqi; Zhang, Ruirui; Peng, Guoxiang; Tan, Hong Z.; Zhang, Zhengyou; Wei, Lei; Yang, Zhengbao

doi:10.1126/sciadv.abp8738

Cited by 69 publications

(31 citation statements)

References 46 publications

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“…In Experiment 4, we confirmed that the ratio of the pain threshold to the tactile threshold (dynamic range) was increased by the application of a local anesthetic cream, even with multipoint electrical stimulation. Multipoint electrical stimulation differs from single-point electrical stimulation in that it also enables the presentation of patterns and motion of these patterns [25]. Vection-like movements can be presented by electrical stimulation as a typical display pattern.…”

Section: E Experimentsmentioning

confidence: 99%

Suppressing Discomfort Caused by Electrical Stimulation Using a Local Anesthetic Cream

et al. 2023

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Electrical stimulation is one of the methods that have been developed to stimulate skin sensations, and can provide sensations such as vibration and pressure by varying the polarity of the stimulus. Such stimuli can be combined to generate a variety of tactile sensations. However, itching or painful sensations are elicited with increasing amounts of electrical current. To address this major problem, in this study, we developed a method to suppress the itching and pain caused by electrical stimulation while presenting stable pressure and vibration sensations. We applied an anesthetic cream containing the commonly used local anesthetics lidocaine and propitocaine to reduce pain and itching associated with electrical stimulation. In particular, we examined the effects of the local anesthetic cream on pain and tactile thresholds. The results showed a significant relationship between the application of the cream and the dynamic range (i.e., pain and tactile thresholds) of the stimulating current. Thus, our proposed approach considerably improved the quality of the participants' subjective experience with electrical stimulation technology.

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Section: E Experimentsmentioning

confidence: 99%

Suppressing Discomfort Caused by Electrical Stimulation Using a Local Anesthetic Cream

et al. 2023

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“…Electro-tactile displays also allow for portable setups due to their simple mechanism (Cornman, et al, 2017). Some studies have used electro-tactile stimuli as wearable devices, presenting them to the fingertips and the entire palm (Lin, et al, 2022;Yao, et al, 2022). Takei et al (2015) attached a film pressure distribution sensor under a film electro-tactile display, measured the pressure applied to each electrode by a pressing finger, and used it as feedback for electrical stimulation.…”

Section: Electro-tactile Stimulationmentioning

confidence: 99%

Softness presentation by combining electro-tactile stimulation and force feedback

Suga

Takeuchi

Tanaka

et al. 2023

Front. Virtual Real.

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To provide realistic tactile sensations in a virtual environment, it is necessary to stimulate both the cutaneous and proprioceptive senses. This study focuses on a realistic method of presenting softness through the use of electro-tactile stimulation. Our system combines a force-feedback device with an electric stimulator to create a soft sensation by applying a reaction force and spreading cutaneous sensation based on the amount of indentation. We measured the change in the contact area of gel samples and used electric stimulation to reproduce the increase in the contact area of the sample. We conducted a psychophysical experiment to evaluate the effectiveness of the combination of cutaneous and force sensations and confirmed that the sensation of softness was enhanced by the simultaneous presentation.

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“…With the emerging of metaverse, human-machine interaction (HMI) attracts more and more attentions as the indispensable element in metaverse, even robotics, VR/ AR and human-machine systems [1][2][3][4]. Current research on bio-organic interfaces has contributed significantly to the realization of HMI [5,6].…”

Section: Introductionmentioning

confidence: 99%

Skin-Inspired Ultra-Tough Supramolecular Multifunctional Hydrogel Electronic Skin for Human–Machine Interaction

Chen

Liang

et al. 2023

Nano-Micro Lett.

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Multifunctional supramolecular ultra-tough bionic e-skin with unique durability for human–machine interaction in complex scenarios still remains challenging. Herein, we develop a skin-inspired ultra-tough e-skin with tunable mechanical properties by a physical cross-linking salting-freezing-thawing method. The gelling agent (β-Glycerophosphate sodium: Gp) induces the aggregation and binding of PVA molecular chains and thereby toughens them (stress up to 5.79 MPa, toughness up to 13.96 MJ m−3). Notably, due to molecular self-assembly, hydrogels can be fully recycled and reprocessed by direct heating (100 °C for a few seconds), and the tensile strength can still be maintained at about 100% after six recoveries. The hydrogel integrates transparency (> 60%), super toughness (up to 13.96 MJ m−3, bearing 1500 times of its own tensile weight), good antibacterial properties (E. coli and S. aureus), UV protection (Filtration: 80%–90%), high electrical conductivity (4.72 S m−1), anti-swelling and recyclability. The hydrogel can not only monitor daily physiological activities, but also be used for complex activities underwater and message encryption/decryption. We also used it to create a complete finger joint rehabilitation system with an interactive interface that dynamically presents the user’s health status. Our multifunctional electronic skin will have a profound impact on the future of new rehabilitation medical, human–machine interaction, VR/AR and the metaverse fields.

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Super-resolution wearable electrotactile rendering system

Cited by 69 publications

References 46 publications

Suppressing Discomfort Caused by Electrical Stimulation Using a Local Anesthetic Cream

Suppressing Discomfort Caused by Electrical Stimulation Using a Local Anesthetic Cream

Softness presentation by combining electro-tactile stimulation and force feedback

Skin-Inspired Ultra-Tough Supramolecular Multifunctional Hydrogel Electronic Skin for Human–Machine Interaction

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