Stretchable helical fibers with skin-core structure for pressure and proximity sensing

Liang, Qianqian; Zhang, Dong; Wu, Yuchen; Qu, Xiangyang; Jia, Yuhang; Chen, Shiyan; Wang, Huaping; Lee, Chengkuo

doi:10.1016/j.nanoen.2023.108598

Cited by 18 publications

(10 citation statements)

References 54 publications

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“…These findings reveal that SBBT helicalfiber-based capacitive sensors possess the capability not only to sense and recognize in a 2D space but also to pinpoint the position and height in a 3D space. With a sufficient data set, we can accurately correlate capacitance changes with height, potentially achieving precise and high-resolution noncontact localization of conductors in 3D space. ,, Of course, this sensor may be able to achieve noncontact 3D password input, position determination of flying objects on the sea surface, and even play a role in the field of marine security. In addition, we submerged the SBBT helical-fiber-based sensor 1 cm below the water surface (Figure i) and tested its sensing performance at 5, 25, and 45 °C, respectively.…”

Section: Results and Discussionmentioning

confidence: 99%

Fiber-Based Noncontact Sensor with Stretchability for Underwater Wearable Sensing and VR Applications

Liang,

Zhang,

et al. 2023

ACS Nano

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The rapid development of artificial intelligent wearable devices has led to an increasing need for seamless information exchange between humans, machines, and virtual spaces, often relying on touch sensors as the primary interaction medium. Additionally, the demand for underwater detection technologies is on the rise owing to the prevalent wet and submerged environment. Here, a fiber-based capacitive sensor with superior stretchability and hydrophobicity is proposed, designed to cater to noncontact and underwater applications. The sensor is constructed using bacterial cellulose (BC)@BC/carbon nanotubes (CNTs) (BBT) helical fiber as the matrix and methyltrimethoxysilane (MTMS) as the hydrophobic modified agent, forming a hydrophobic silylated BC@BC/ CNT (SBBT) helical fiber by the chemical vapor deposition (CVD) technique. These fibers exhibit an impressive contact angle of 132.8°. The SBBT helicalfiber-based capacitive sensor presents capabilities for both noncontact and underwater sensing, which exhibits a significant capacitance change of −0.27 (at a distance of 0.5 cm). We have achieved interactive control between real space and virtual space through intelligent data analysis technology with minimal interference from the presence of water. This work has laid a solid foundation of noncontact sensing with attributes such as degradability, stretchability, and hydrophobicity. Moreover, it offers promising solutions for barrier-free communication in virtual reality (VR) and underwater applications, providing avenues for smart human−machine interfaces for submerged use.

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Section: Results and Discussionmentioning

confidence: 99%

Fiber-Based Noncontact Sensor with Stretchability for Underwater Wearable Sensing and VR Applications

Liang,

Zhang,

et al. 2023

ACS Nano

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“…First, wearable sensors should be soft, ultrathin, and skin-conformable to ensure comfort during extended use and to conform to the shape and movement of the skin . Given that our biological skin can be stretched up to 75% strain and experiences surface strain up to 55% at the knee for movement of joint, wearable sensors should be stretchable over 75% strain to conform covering to complex biological surfaces under free movement and stretch during various activities for practical implementation. , While there have been recent achievements of stretchable electronics using intrinsically stretchable materials based on elastomeric composite, , inorganic materials and semiconductors, which are key components for high performance electronics, are still not sufficiently soft and stretchable. ,− In addition, the inevitable trade-off property between tuning the mechanical properties of devices and sensor performances, such as electrical property, functionality, and ease of fabrication, should be considered …”

Section: Soft Sensors For Haptic Inputmentioning

confidence: 99%

Soft Sensors and Actuators for Wearable Human–Machine Interfaces

Park,

Lee,

Cho

et al. 2024

Chem. Rev.

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Haptic human−machine interfaces (HHMIs) combine tactile sensation and haptic feedback to allow humans to interact closely with machines and robots, providing immersive experiences and convenient lifestyles. Significant progress has been made in developing wearable sensors that accurately detect physical and electrophysiological stimuli with improved softness, functionality, reliability, and selectivity. In addition, soft actuating systems have been developed to provide high-quality haptic feedback by precisely controlling force, displacement, frequency, and spatial resolution. In this Review, we discuss the latest technological advances of soft sensors and actuators for the demonstration of wearable HHMIs. We particularly focus on highlighting material and structural approaches that enable desired sensing and feedback properties necessary for effective wearable HHMIs. Furthermore, promising practical applications of current HHMI technology in various areas such as the metaverse, robotics, and user-interactive devices are discussed in detail. Finally, this Review further concludes by discussing the outlook for next-generation HHMI technology.

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“…In addition, real-time detection of body contact and/or contact force (e.g., punching speed and force) is useful in athletic contests for assisting judgment or guiding training. For example, Liang et al 834 developed a helical fiber-based pressure sensor, which is capable of detecting contact pressure and realizing noncontact proximity detection during playing basketball and Taekwondo display (Figure 73). Ye et al 835 demonstrated an all-textile pressure sensor capable of precisely monitoring the punching speed and pressure during physical combat sports such as sparring and boxing.…”

Section: Exercise and Sportsmentioning

confidence: 99%

Section: Application Scenariosmentioning

confidence: 99%

Porous Conductive Textiles for Wearable Electronics

Ding,

Jiang,

et al. 2024

Chem. Rev.

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Over the years, researchers have made significant strides in the development of novel flexible/stretchable and conductive materials, enabling the creation of cutting-edge electronic devices for wearable applications. Among these, porous conductive textiles (PCTs) have emerged as an ideal material platform for wearable electronics, owing to their light weight, flexibility, permeability, and wearing comfort. This Review aims to present a comprehensive overview of the progress and state of the art of utilizing PCTs for the design and fabrication of a wide variety of wearable electronic devices and their integrated wearable systems. To begin with, we elucidate how PCTs revolutionize the form factors of wearable electronics. We then discuss the preparation strategies of PCTs, in terms of the raw materials, fabrication processes, and key properties. Afterward, we provide detailed illustrations of how PCTs are used as basic building blocks to design and fabricate a wide variety of intrinsically flexible or stretchable devices, including sensors, actuators, therapeutic devices, energy-harvesting and storage devices, and displays. We further describe the techniques and strategies for wearable electronic systems either by hybridizing conventional off-the-shelf rigid electronic components with PCTs or by integrating multiple fibrous devices made of PCTs. Subsequently, we highlight some important wearable application scenarios in healthcare, sports and training, converging technologies, and professional specialists. At the end of the Review, we discuss the challenges and perspectives on future research directions and give overall conclusions. As the demand for more personalized and interconnected devices continues to grow, PCT-based wearables hold immense potential to redefine the landscape of wearable technology and reshape the way we live, work, and play.

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Stretchable helical fibers with skin-core structure for pressure and proximity sensing

Cited by 18 publications

References 54 publications

Fiber-Based Noncontact Sensor with Stretchability for Underwater Wearable Sensing and VR Applications

Fiber-Based Noncontact Sensor with Stretchability for Underwater Wearable Sensing and VR Applications

Soft Sensors and Actuators for Wearable Human–Machine Interfaces

Porous Conductive Textiles for Wearable Electronics

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