Stretchable skin hydration sensor based on hygroscopic and ion conductive polymer composites

Na, Sangyun; Yeom, Jeonghee; Chang, Yoojin; Kwon, Yeju; Park, Cheolhong; Park, Yong‐Jin; Ko, Hyunhyub

doi:10.1016/j.cej.2022.140957

Cited by 9 publications

(7 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Various methods can be employed to identify the types of materials or solvents, including monitoring capacitance, , ion conductivity, , thermal conductivity, electromagnetic properties, and computer vision. , For example, the capacitance can be influenced by the dipole moment while the ionic conductivity can be changed by hydration during solvent vaporization, enabling discrimination of chemical solvents. Among these methods, thermosensation shows particular promise in perceiving material types and wetness on human skin due to its low cost and high accuracy.…”

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.

Self Cite

View full text Add to dashboard Cite

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.

show abstract

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.

Self Cite

View full text Add to dashboard Cite

show abstract

“…As shown in Figure 2d, the peaks corresponding to F 1s, O 1s, Ti 2p, and C 1s indicate the existence of MXene in MPS and MPS-UHP. [36,37,46,54] The peak at ≈284.0 eV in the high-resolution C 1s spectrum corresponds to the C-C group, which is probably attributed to the incorporation of PVA and SEBS in MPS-UHP (Figure 2e). [37,46,54] The high-resolution Ti 2p spectrum (Figure 2f) reveals the composition of MXene in MPS-UHP and implies that Ti was partially oxidized during the etching process.…”

Section: Characterization Of Mxene-based Composite Aerogelsmentioning

confidence: 99%

“…[36,37,46,54] The peak at ≈284.0 eV in the high-resolution C 1s spectrum corresponds to the C-C group, which is probably attributed to the incorporation of PVA and SEBS in MPS-UHP (Figure 2e). [37,46,54] The high-resolution Ti 2p spectrum (Figure 2f) reveals the composition of MXene in MPS-UHP and implies that Ti was partially oxidized during the etching process. [36,37,42,54,55] The chemical structures of MCmS, MCmS-UHP, MChS, and MChS-UHP are also analyzed by XPS The appearances and morphologies of MXene-based composite aerogels before and after uniaxial hot pressing are shown in Figure 2g-j and Figures S9 and S10 (Supporting Information).…”

Section: Characterization Of Mxene-based Composite Aerogelsmentioning

confidence: 99%

“…[37,46,54] The high-resolution Ti 2p spectrum (Figure 2f) reveals the composition of MXene in MPS-UHP and implies that Ti was partially oxidized during the etching process. [36,37,42,54,55] The chemical structures of MCmS, MCmS-UHP, MChS, and MChS-UHP are also analyzed by XPS The appearances and morphologies of MXene-based composite aerogels before and after uniaxial hot pressing are shown in Figure 2g-j and Figures S9 and S10 (Supporting Information). The MXene/polymer composite aerogels containing different organic polymers (PVA, CMC, and CS) show 3D-interconnected highly porous structures with a pore size of ≈50-180 μm.…”

Section: Characterization Of Mxene-based Composite Aerogelsmentioning

confidence: 99%

See 1 more Smart Citation

Highly Stretchable MXene‐based Meta‐Aerogels with Near‐Zero and Negative Poisson's Ratios

Sun,

Zhang,

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

MXene‐based aerogels are promising candidates for wearable electronics due to their unique structures and properties. However, the reported MXene‐based aerogels show poor stretchability, significantly restricting their applications in wearable electronics. Herein, unprecedented highly stretchable MXene‐based aerogels with crimpled and reentrant microstructures are developed via synergistic assembly of MXene and flexible polymers combined with uniaxial and biaxial hot‐pressing strategies. The uniaxially hot‐pressed MXene‐based meta‐aerogels show compressed and crimpled microstructures and combine ultrahigh stretchability up to 427%, high elasticity, high compressibility, high fatigue resistance upon compression and stretching, and near‐zero Poisson's ratios. The biaxially hot‐pressed MXene‐based meta‐aerogels exhibit reentrant microstructures and achieve high stretchability and negative Poisson's ratios upon stretching in different directions, which have never been realized by traditional aerogels. It is demonstrated that they can be used for ultrabroad‐range pressure/strain sensors, highly stretchable triboelectric nanogenerators, and smart thermal management with tunable thermal insulation and Joule heating performances achieved by stretching. This work opens a new way to highly stretchable aerogels with near‐zero and negative Poisson's ratios promising in wearable electronics, nanogenerators, thermal management, energy storage, etc.

show abstract

“…They are now widely explored in emerging fields such as robotic skins, [4][5][6][7][8][9] healthcare devices, [10][11][12][13][14][15][16][17][18][19] and wearable environmental monitoring. [20][21][22] The ion gel sensors can be operated at a lower voltage (0.01-0.5 V) and the required current level to collect the sensing signals is much lower than the electrical sensors, thus lower power consumption is required for sensor operation. Like the principle of human mechanoreceptors, when the sensor operates based on the potential, power consumption can be minimized even for operating a high-density sensor.…”

Section: Introductionmentioning

confidence: 99%

Purposive Design of Stretchable Composite Electrodes for Strain‐Negative, Strain‐Neutral, and Strain‐Positive Ionic Sensors

Choi,

Jeong

2023

Advanced Materials

View full text Add to dashboard Cite

Soft ionic sensors have emerged as a promising device form to accommodate various future electronic applications. One of the hurdles in ionic sensors is that the sensing signals by mechanical deformation and other stimuli are mixed up. Although the performance of the ionic sensors is highly dependent on the structure of electrodes, systematic investigation of purposive electrode design has been rarely explored. This study proposes a simple strategy for designing stretchable composite electrodes which make the ionic sensor strain‐negative, strain‐neutral, and strain‐positive. This study reveals that such strain‐responses can be obtained by adjusting the surface coverage of the electrically‐effective conductive fillers. On the basis of the concept, deposition of a Au film on an elastomer composite and crack formation of the Au film are presented for the practical fabrication of a highly reproducible strain‐neutral ionic sensor. A completely strain‐independent temperature sensor is demonstrated by using the Au crack‐based ionic sensor. In addition, this study demonstrates a two‐terminal shear sensor capable of recognizing shear directions by combining the strain‐positive and strain‐negative electrodes.This article is protected by copyright. All rights reserved

show abstract

Stretchable skin hydration sensor based on hygroscopic and ion conductive polymer composites

Cited by 9 publications

References 43 publications

Soft Sensors and Actuators for Wearable Human–Machine Interfaces

Soft Sensors and Actuators for Wearable Human–Machine Interfaces

Highly Stretchable MXene‐based Meta‐Aerogels with Near‐Zero and Negative Poisson's Ratios

Purposive Design of Stretchable Composite Electrodes for Strain‐Negative, Strain‐Neutral, and Strain‐Positive Ionic Sensors

Contact Info

Product

Resources

About