Transfer properties of touch elicited waves: Effect of posture and contact conditions

Schäfer, Harald; Wells, Zachary; Shao, Yitian; Visell, Yon

doi:10.1109/whc.2017.7989960

Cited by 12 publications

(5 citation statements)

References 6 publications

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“…Third, future research could investigate how differences in hand size, age, hydration state, kinematic poses, and muscle contraction states may affect vibration transmission and perception. These variables have been shown to alter the transmission of vibration and perception in prior research [55], [56]. Additionally, it would be valuable to test other hands as transmitters to further explore the effects of individual differences on the transmission.…”

Section: B Opportunities For Further Investigationmentioning

confidence: 99%

Interpersonal Transmission of Vibrotactile Feedback via Smart Bracelets: Mechanics and Perception

Hachisu,

Reardon,

Shao

et al. 2024

IEEE Trans. Haptics

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The importance of interpersonal touch for social well-being is widely recognized, and haptic technology offers a promising avenue for augmenting these interactions. We presented smart bracelets that use vibrotactile feedback to augment social interactions, such as handshakes, by transmitting vibrations between two people. This work conducts mechanical and perceptual experiments to investigate key factors affecting the delivery of interpersonal vibrotactile feedback via bracelets. Our results show that low-frequency vibrations elicited through tangential actuation are efficiently transmitted from the wrist to the hand, with amplitude varying based on distance, frequency, and actuation direction. We also found that vibrations transmitted to different locations on the hand can be felt by a second person, with perceptual intensity correlated with oscillation magnitude at the touched location. Additionally, we demonstrate how wristinterfaced devices can elicit spatial vibration patterns throughout the hand surface, which can be manipulated by the frequency and direction of actuation at the wrist. Our experiments provide important insights into the human factors associated with interpersonal vibrotactile feedback and have significant implications for the design of technologies that promote social well-being.

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Section: B Opportunities For Further Investigationmentioning

confidence: 99%

Interpersonal Transmission of Vibrotactile Feedback via Smart Bracelets: Mechanics and Perception

Hachisu,

Reardon,

Shao

et al. 2024

IEEE Trans. Haptics

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“…Techniques that have previously been investigated for capturing transient or vibratory signals in spatially distributed regions of soft tissues of the body include large area vibrometry methods, such as ultrasonic Doppler vibrometry [214,218], laser scanning vibrometry [208,47], line laser sensors [219], high speed cameras [211,220], among others. These typically require the hand to remain stationary, making it difficult to collect tactile data during hand activities, as we Many wearable sensing devices have also been previously investigated, including skinwearable accelerometer arrays, such as the devices employed in our earlier work [22,221], which are too kinematically constrained to admit most normal hand actions, partly motivating the device presented here. Others consist of sensor arrays with low spatial resolution, that have not been designed to transduce propagating signals throughout the hand [45,222,223,224,217].…”

Section: Related Researchmentioning

confidence: 99%

“…These waves propagate in a manner that reflects not only the anatomy and mechanics of the skin, but also the properties of touched objects, the locations of contact with the skin, and the frequency content of tactile inputs [22,221]. To date, the influence of propagating waves on tactile perception is not fully understood.…”

Section: Introductionmentioning

confidence: 99%

Tactile Sensing, Information, and Feedback via Wave Propagation

Shao

2022

Springer Series on Touch and Haptic Systems

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Through my entire PhD study, I learned a lot from my colleagues in the RE Touch Lab. Discussions with Gregory Reardon about technical problems, like in physics or statistics, are always constructive and inspiring. Shantonu Biswas and Thanh Nho Do influenced me with their expertise in nanoengineering and material science. Also, I am lucky to have many supportive colleagues and friends in the lab. Anzu Kawazoe can always cheer me up with her lighthearted mood, unveiling the optimistic side of life to me. Zach Wells and Harald Schafer, beside research collaborations, brought me a lot of fun outside the lab, directing me to the ocean around Santa Barbara. I also very enjoyed the company of Yufei Hao, Taku Hachisu, Simone Fani, Jasper van der Lagemaat and Behnam Khojasteh during their visit to my lab. Starting from the time I joined the lab in Philadelphia, I have been gaining support from Marco Janko and Bin Li. I am really v grateful to have all of them as my colleagues. My friends outside the lab also helped me passing through the challenging paths toward the finish line of my PhD. I want to give special thanks to Mingwei Tang, my friend since childhood, who also obtained a PhD degree in the US. We traveled together to many sights and cities. Those trips reduced my anxiety and rebuilt my courage to march forward. I also value the friendship with Yan Kong and Zhenyu Yang, who provided me after-work entertainment in Harold Frank hall, and emotional support. I miss and appreciate the time with Pingge Jiang, Lei Song, Tao Sun, Yaou Zhou and Yanan Yang during my study in Philadelphia.I appreciate the love, care and support from my girlfriend, Huihui Zhang, during the last two years of my PhD. A delightful, sweet talk with her can always relieve my stress and hearten me, motivating me to look beyond the difficulties.Finally, I like to thank my family, especially my grandmother. I grew up bathing in her unconditional love. She was always proud of me and had the strongest belief in me, from preschool till PhD, granting me the faith to overcome any challenges. I deeply regret not being able to spend enough time with her at home.

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“…Many wearable sensing devices have also been previously investigated, including skin-wearable accelerometer arrays, such as the devices employed in our earlier work [12], [28], which are too kinematically constrained to admit most normal hand actions, partly motivating the device presented here. Others consist of sensor arrays with low spatial resolution, that have not been designed to transduce propagating signals throughout the hand [11], [15], [29]- [31].…”

Section: A Related Researchmentioning

confidence: 99%

A Wearable Tactile Sensor Array for Large Area Remote Vibration Sensing in the Hand

Shao

Visell

2020

IEEE Sensors J.

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Tactile sensing is a essential for skilled manipulation and object perception, but existing devices are unable to capture mechanical signals in the full gamut of regimes that are important for human touch sensing, and are unable to emulate the sensing abilities of the human hand. Recent research reveals that human touch sensing relies on the transmission of mechanical waves throughout tissues of the hand. This provides the hand with remarkable abilities to remotely capture distributed vibration signatures of touch contact. Little engineering attention has been given to important sensory system. Here, we present a wearable device inspired by the anatomy and function of the hand and by human sensory abilities. The device is based on a 126 channel sensor array capable of capturing high resolution tactile signals during natural manual activities. It employs a network of miniature three-axis sensors mounted on a flexible circuit whose geometry and topology were designed match the anatomy of the hand, permitting data capture during natural interactions, while minimizing artifacts. Each sensor possesses a frequency bandwidth matching the human tactile frequency range. Data is acquired in real time via a custom FPGA and an I 2 C network. We also present physiologically informed signal processing methods for reconstructing whole hand tactile signals using data from this system. We report experiments that demonstrate the ability of this system to accurately capture remotely produced whole hand tactile signals during manual interactions.

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Transfer properties of touch elicited waves: Effect of posture and contact conditions

Cited by 12 publications

References 6 publications

Interpersonal Transmission of Vibrotactile Feedback via Smart Bracelets: Mechanics and Perception

Interpersonal Transmission of Vibrotactile Feedback via Smart Bracelets: Mechanics and Perception

Tactile Sensing, Information, and Feedback via Wave Propagation

A Wearable Tactile Sensor Array for Large Area Remote Vibration Sensing in the Hand

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