Block Copolymer‐Based Supramolecular Ionogels for Accurate On‐Skin Motion Monitoring (Adv. Funct. Mater. 36/2021)

Cho, Kyung Gook; An, Soyeon; Cho, Dae‐Hyun; Kim, Jeong Hui; Nam, Ji Sun; Kim, Myungwoong; Lee, Keun Hyung

doi:10.1002/adfm.202170262

Cited by 8 publications

(11 citation statements)

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“…[61,62] As a result, many ionic conductor-based strain sensors exhibited low sensitivity and serious signal hysteresis, which severely affects the signal transmission and conversion in sensor. [63,64] Our ICE-based resistive-type sensors with rapid responsiveness showed no significant signal hysteresis and high stability. For example, below 75% strain, the GF is ≈1.13, and 1.79 at 75-175%, 2.76 at 175-200%, and 3.46 at 200-250%, increasing progressively as strain grows (Figure 5g).…”

Section: Electrical Properties and Wearable Strain Sensormentioning

confidence: 92%

A Fully Self‐Healing and Highly Stretchable Liquid‐Free Ionic Conductive Elastomer for Soft Ionotronics

Luo

Chen

Huang

et al. 2023

Adv Funct Materials

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Soft ionic conductors hold great potential for soft ionotronics, such as ionic skin, human–machine interface and soft luminescent device. However, most hydrogel and ionogel‐based soft ionic conductors suffer from freezing, evaporation and liquid leakage problems, which limit their use in complex environments. Herein, a class of liquid‐free ionic conductive elastomers (ICEs) is reported as an alternative soft ionic conductor in soft ionotronics. These liquid‐free ICEs offer a combination of desirable properties, including extraordinary stretchability (up to 1913%), toughness (up to 1.08 MJ cm−3), Young's modulus (up to 0.67 MPa), rapid fully self‐healing capability at room temperature, and good conductivity (up to 1.01 × 10−5 S cm−1). The application of these ICEs is demonstrated by creating a wearable sensor that can detect and discriminate minimal deformations and human body movements, such as finger or elbow joint flexion, walking, running, etc. In addition, self‐healing soft ionotronic devices are demonstrated to confront mechanical breakdown, such as an ionic skin and an alternating‐current electroluminescent device that can reuse from damage. It is believed that these liquid‐free ICEs hold great promises for applications in wearable devices and soft ionotronics.

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Section: Electrical Properties and Wearable Strain Sensormentioning

confidence: 92%

A Fully Self‐Healing and Highly Stretchable Liquid‐Free Ionic Conductive Elastomer for Soft Ionotronics

Luo

Chen

Huang

et al. 2023

Adv Funct Materials

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“…Therefore, the ability of ionogels to exhibit predictable and reliable thermal properties made them promising materials for use in a wide range of temperature sensing applications. Compared with ionogel-based sensors with a relatively low solid content reported in recent years (Figure 6h), [11,[43][44][45][46][47][48][49][50][51] the resulting I-3% exhibited excellent mechanical and applied performance in fracture strength, stretchability, reconstruction, and high GF among the ionogels.…”

Section: Application Of Cosolvent Ionogelmentioning

confidence: 97%

Strong and Ultratough Ionogel Enabled by Ingenious Combined Ionic Liquids Induced Microphase Separation

Tie,

Mao,

Zhang

et al. 2023

Adv Funct Materials

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Ionogels have become a popular material in flexible electronics and soft robotics based on their excellent ionic conductivity, environmental tolerance, and electrochemical stability. However, it remains a challenge to develop an ionogel integrated with high strength, toughness, self‐healing, and adhesion. Herein, a novel strategy is established to design a high‐strength (0.97 MPa) and tensile (980%), excellent crack insensitivity, self‐healing ionogel based on the cosolvent method. By virtue of differential interactions between the specific polymer and various ionic liquids with gradient polarity, cosolvent systems are employed to achieve high‐performance ionogels by a simple one‐step polymerization. Gel permeation chromatography, atomic force microscopy, time‐domain nuclear magnetism, and density functional theoretical calculation are used to analyze the reasons. Microphase separation can be induced by hydrone or stretching to enhance strength of the ionogel. Therefore, ionogels can be assembled as strain and temperature sensors to monitor human movement and person's body temperature with a low detection threshold (0.1 °C) in extreme environments. This concept creates a new path to achieve soft materials with high performance, and provide a prospective strategy to regulate the in situ microphase change and performance of the resulting ionogel via the one‐step polymerization.

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“…The weak stability due to its high sensitivity to humid environment or water is one of most critical challenges for perovskites. To address this issue, enormous efforts have been devoted to achieve perovskite laser with water resistance (Table S3, Supporting Information), such as encapsulating perovskite into polymer or silica shell, [60,61] depositing protected layer, [62] and so on. For example, the reported water-resistant perovskite whisperinggallery mode laser for 13 h was achieved by incorporating the perovskite nanodots into capillary, which displayed a lasing threshold of 1.12 mJ cm −2 , a line width of 0.3-0.5 nm, and the Q-factors of ≈1070-1700.…”

Section: Water Resistance Of the Subwavelength Single-mode Perovskite...mentioning

confidence: 99%

Water‐Resistant Subwavelength Perovskite Lasing from Transparent Silica‐Based Nanocavity

Huang,

Shen,

Liao

et al. 2023

Advanced Materials

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Great research efforts have been devoted to exploring the miniaturization of chip‐scale coherent light sources possessing excellent lasing performance. Despite the indispensable role in Si photonics, SiO2 is generally considered not contributing to the starting up and operation of integrated lasers. Here we demonstrate an extraordinary‐performance subwavelength‐scale perovskite vertical cavity laser with all‐transparent SiO2 cavity, whose cavity is ultra‐simple and composed of only two parallel SiO2 plates. By introducing a ligand‐assisted thermally co‐evaporation strategy, highly luminescent perovskite film with high reproducibility and excellent optical gain is grown directly on SiO2. Benefitting from their high‐refractive‐index contrast, low‐threshold, high‐quality factor, and single‐mode lasing is achieved in subwavelength range of ∼120 nm, and verified by long‐range coherence distance (115.6 μm) and high linear polarization degree (82%). More importantly, the subwavelength perovskite laser device could operate in water for 20 days without any observable degradation, exhibiting ultra‐stable water‐resistant performance. Our findings would provide a simple but robust and reliable strategy for the miniaturized on‐chip lasers compatible with Si photonics.This article is protected by copyright. All rights reserved

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Block Copolymer‐Based Supramolecular Ionogels for Accurate On‐Skin Motion Monitoring (Adv. Funct. Mater. 36/2021)

Cited by 8 publications

References 0 publications

A Fully Self‐Healing and Highly Stretchable Liquid‐Free Ionic Conductive Elastomer for Soft Ionotronics

A Fully Self‐Healing and Highly Stretchable Liquid‐Free Ionic Conductive Elastomer for Soft Ionotronics

Strong and Ultratough Ionogel Enabled by Ingenious Combined Ionic Liquids Induced Microphase Separation

Water‐Resistant Subwavelength Perovskite Lasing from Transparent Silica‐Based Nanocavity

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