Development of Wearable Tactile Sensor Based on Galinstan Liquid Metal for Both Temperature and Contact Force Sensing

Wang, Yancheng; Lu, Yingtong; Mei, Deqing; Geng, Qiang

doi:10.1109/case48305.2020.9216840

Cited by 6 publications

(2 citation statements)

References 23 publications

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“…Multifunctional tactile sensors are highly desirable for wearable and robotic applications towards minimizing the number of integrated electronics. In this context, Wang et al (2020) demonstrated both force and temperature sensing capabilities using two galinstan-based microchannels acting as sensing electrodes. While this design failed to measure the simultaneous change in pressure and temperature, two additional channels were placed away from the force sensing area, thereby decoupling temperature and force measurements using a Wheatstone bridge circuit (Wang et al, 2021).…”

Section: Resistive-based Microfluidic Tactile Sensorsmentioning

confidence: 99%

Tactile Sensing for Minimally Invasive Surgery: Conventional Methods and Potential Emerging Tactile Technologies

Othman¹,

Lai²,

Abril³

et al. 2022

Front. Robot. AI

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As opposed to open surgery procedures, minimally invasive surgery (MIS) utilizes small skin incisions to insert a camera and surgical instruments. MIS has numerous advantages such as reduced postoperative pain, shorter hospital stay, faster recovery time, and reduced learning curve for surgical trainees. MIS comprises surgical approaches, including laparoscopic surgery, endoscopic surgery, and robotic-assisted surgery. Despite the advantages that MIS provides to patients and surgeons, it remains limited by the lost sense of touch due to the indirect contact with tissues under operation, especially in robotic-assisted surgery. Surgeons, without haptic feedback, could unintentionally apply excessive forces that may cause tissue damage. Therefore, incorporating tactile sensation into MIS tools has become an interesting research topic. Designing, fabricating, and integrating force sensors onto different locations on the surgical tools are currently under development by several companies and research groups. In this context, electrical force sensing modality, including piezoelectric, resistive, and capacitive sensors, is the most conventionally considered approach to measure the grasping force, manipulation force, torque, and tissue compliance. For instance, piezoelectric sensors exhibit high sensitivity and accuracy, but the drawbacks of thermal sensitivity and the inability to detect static loads constrain their adoption in MIS tools. Optical-based tactile sensing is another conventional approach that facilitates electrically passive force sensing compatible with magnetic resonance imaging. Estimations of applied loadings are calculated from the induced changes in the intensity, wavelength, or phase of light transmitted through optical fibers. Nonetheless, new emerging technologies are also evoking a high potential of contributions to the field of smart surgical tools. The recent development of flexible, highly sensitive tactile microfluidic-based sensors has become an emerging field in tactile sensing, which contributed to wearable electronics and smart-skin applications. Another emerging technology is imaging-based tactile sensing that achieved superior multi-axial force measurements by implementing image sensors with high pixel densities and frame rates to track visual changes on a sensing surface. This article aims to review the literature on MIS tactile sensing technologies in terms of working principles, design requirements, and specifications. Moreover, this work highlights and discusses the promising potential of a few emerging technologies towards establishing low-cost, high-performance MIS force sensing.

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Section: Resistive-based Microfluidic Tactile Sensorsmentioning

confidence: 99%

Tactile Sensing for Minimally Invasive Surgery: Conventional Methods and Potential Emerging Tactile Technologies

Othman¹,

Lai²,

Abril³

et al. 2022

Front. Robot. AI

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“…Additionally, softness, flexibility, and stretchability of LMs can offer conformal and robust temperature sensing even after deformation. In this regard, Wang et al 108 developed a thin film wearable sensor for simultaneous tactile sensing and temperature measurements. Their sensing platform consisted of microfluidic channels, designed in the shape of fingerprints filled with Galinstan.…”

mentioning

confidence: 99%

Emerging Role of Liquid Metals in Sensing

Baharfar

Kalantar‐zadeh

2022

ACS Sens.

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Low melting point metals and alloys are the group of materials that combine metallic and liquid properties, simultaneously. The fascinating characteristics of liquid metals (LMs) including softness and high electrical and thermal conductivity, as well as their unique interfacial chemistry, have started to dominate various research disciplines. Utilization of LMs as responsive interfaces, enabling sensing in a flexible and versatile manner, is one of the most promising traits demonstrated for LMs. In the context of LMs-enabled sensors, gallium (Ga) and its alloys have emerged as multipurpose functional materials with many compelling physical and chemical properties. Responsiveness to different stimuli and easy-to-functionalize interfaces of Ga-based LMs make them ideal candidates for a variety of sensing applications. However, despite the vast capabilities of Ga-based LMs in sensing, applications of these materials for developing different sensors have not been fully explored. In the present review, we provide a comprehensive overview regarding the applications of Ga-based LMs in a wide range of sensing approaches that cover different physical and chemical sensors. The unique features of Ga-based LMs, which make them promising materials for sensing, are discussed in subsections followed by relevant case studies. Finally, challenges as well as the prospected future and developing motifs are highlighted for each type of LM-based sensors.

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FingerTac - An Interchangeable and Wearable Tactile Sensor for the Fingertips of Human and Robot Hands

Sathe,

Schmitz,

Tomo

et al. 2023

2023 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)

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Development of Wearable Tactile Sensor Based on Galinstan Liquid Metal for Both Temperature and Contact Force Sensing

Cited by 6 publications

References 23 publications

Tactile Sensing for Minimally Invasive Surgery: Conventional Methods and Potential Emerging Tactile Technologies

Tactile Sensing for Minimally Invasive Surgery: Conventional Methods and Potential Emerging Tactile Technologies

Emerging Role of Liquid Metals in Sensing

FingerTac - An Interchangeable and Wearable Tactile Sensor for the Fingertips of Human and Robot Hands

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