Macroscopic Layered Organogel–Hydrogel Hybrids with Controllable Wetting and Swelling Performance

Zhao, Tianyi; Wang, Guangyan; Hao, Dezhao; Chen, Lie; Liu, Kesong; Liu, Mingjie

doi:10.1002/adfm.201800793

Cited by 85 publications

(63 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, remarkable progress has been achieved in the development of hydrogel‐hybrid system and hydrogel‐interface chemistries based on diverse adhesion mechanism, such as acylhydrazone bonding, [ 28 ] nanoparticles modification, [ 29 ] double bonds modification and copolymerization, [ 30 ] and the hydrogen‐bonding mechanism, [ 31 ] which exhibit great promising for developing unique smart soft materials. The interfacial adhesion modification through hydrogel‐interface chemistries between the dielectric organogel layer and ionic hydrogel conductors can significantly enhance the stability and practicality of the whole device of capacitive strain sensor.…”

Section: Formulation and Characterization Of Dynamically Super‐tough Hydro/organo‐gelsmentioning

confidence: 99%

A Highly Stable and Durable Capacitive Strain Sensor Based on Dynamically Super‐Tough Hydro/Organo‐Gels

Huang

et al. 2021

Adv Funct Materials

106

View full text Add to dashboard Cite

Capacitive‐type strain sensors based on hydrogel ionic conductors have undergone rapid development benefited from their robust structure, drift‐free sensing, higher sensitivity, and precision. However, the unsatisfactory electro‐mechanical stability of the conventional hydrogel conductors, which are normally vulnerable to large deformation and severe mechanical impacts, remains a challenge. In addition, there is not enough research regarding the adhesiveness and mechanical properties of the dielectric layer, which is also critical for the mechanical adaptability of the whole device. Here, a dynamically super‐tough capacitive‐type strain sensor based on energy‐dissipative dual‐crosslinked hydrogel conductors and an organogel dielectric with high adhesive strength is developed. Combining with the mechanical advantages of the hydro/organo‐gels, the capacitive strain sensor exhibits high stretchability and superior linear dependence of sensitivity with a gauge factor of ≈0.8% at 100% strain. Moreover, the sensor displayed ultrastability against various severe mechanical stimuli that can even survive unprecedentedly from extremely catastrophic car run‐over by 20 times. With these synergistic mechanical advantages, the capacitive strain sensor is successfully applied as a highly‐reliable wearable sensing system to monitor diverse faint physiological signals and large‐range human motions.

show abstract

Section: Formulation and Characterization Of Dynamically Super‐tough Hydro/organo‐gelsmentioning

confidence: 99%

A Highly Stable and Durable Capacitive Strain Sensor Based on Dynamically Super‐Tough Hydro/Organo‐Gels

Huang

et al. 2021

Adv Funct Materials

106

View full text Add to dashboard Cite

show abstract

“…For instance, Asatekin's work [246] demonstrated a new, simple, and reproducible method called interfacially initiated free-radical polymerization (IIFRP) for fabricating membranes with ultrathin (<100 nm), defect-free hydrogel selective layers on porous supports. In the research by Liu et al, [247] they reported a simple yet versatile method for assembling macroscopic-layered organogelhydrogel hybrids via UV initiated free-radical polymerization to provide robust properties, such as excellent stretchability, tough interfacial bonds, enduring anti-swelling, and low dehydration.…”

Section: Via Monomersmentioning

confidence: 99%

“…and function for each layer can be particularly important in diverse applications. [247,[386][387][388][389][390] Figure 8. Illustrations of core-shell-structured hydrogels.…”

Section: Multi-layered Hydrogelsmentioning

confidence: 99%

Hydrogel: Diversity of Structures and Applications in Food Science

Jia

Luo

2021

Food Reviews International

115

View full text Add to dashboard Cite

Hydrogels are a series of soft and wet materials with three dimensions of crosslinked networks. Hydrogels have attracted great attention due to their diverse functional properties, and their wide range of applications, such as in soft robots and actuators, stretched electronic devices, tissue engineering materials, controlled-release drug delivery vehicles, biomedicine materials, food science, and (bio)sensors. In general, there are four core concerns in hydrogel science, including the polymer source, structure fabrication, gel function, and gel applications. According to the logic that the "structure determines function", it is believed that rational design of structures can effectively regulate the functions and applications of hydrogels. Hence, in the current review, "structure" as the core topic will be highly regarded, and the crosslinking mechanisms and structural diversity of hydrogels are comprehensively summarized. Additionally, hydrogels also show their great application potential in food science. Hence, the current review also pays more attention to the application of hydrogels in food nutrition and health, food engineering and processing, and food safety. It is whished that this review not only serves as a reference for improving the comprehensive understanding of the structural design of hydrogels but also provides a forward-looking idea for hydrogel applications in food science.

show abstract

“…On the basis of aforementioned developments, complex configurations can be obtained by integrating separate units with specific heterogeneous structure and distinct deformation modes. [ 15,25,26 ] These composite hydrogels usually have a continuous surface despite of different localized curvatures. The geometric continuity results in relatively limited displacement between the neighboring regions, and thus the small amplitude of deformation.…”

Section: Figurementioning

confidence: 99%

Kirigami‐Design‐Enabled Hydrogel Multimorphs with Application as a Multistate Switch

Hao

et al. 2020

Advanced Materials

108

View full text Add to dashboard Cite

Morphing materials have promising applications in soft robots, intelligent devices, and so forth. Among the various design strategies, kirigami structures are recognized as a powerful tool to obtain sophisticated 3D configurations and unprecedented properties from planar designs on common materials. Here, some kirigami designs are demonstrated for programmable, multistable 3D configurations from composite hydrogel sheets. Via photolithographic polymerization, perforated composite hydrogel sheets are fabricated, in which soft and active hydrogel strips are patterned in stiff and passive hydrogel frames. When immersed in water, the gel strips buckle out of plane due to swelling mismatch. In the kirigami structures, the geometric continuity is disrupted by the introduction of cutouts, and thus the degrees of deformation freedom increases remarkably. Multiple configurations are obtained in a single composite hydrogel by controlling the buckling direction of each strip. Multitier configurations are also obtained by using a hierarchically designed kirigami structure. A multicontact switch of an electric circuit is designed by harnessing the multitier gel configurations. Furthermore, a rotation mode is realized by introducing chirality in the kirigami design. The versatile design of the kirigami structure for programmable deformations should be applicable for other intelligent materials toward promising applications in biomedical devices and flexible electronics.

show abstract

Macroscopic Layered Organogel–Hydrogel Hybrids with Controllable Wetting and Swelling Performance

Cited by 85 publications

References 45 publications

A Highly Stable and Durable Capacitive Strain Sensor Based on Dynamically Super‐Tough Hydro/Organo‐Gels

A Highly Stable and Durable Capacitive Strain Sensor Based on Dynamically Super‐Tough Hydro/Organo‐Gels

Hydrogel: Diversity of Structures and Applications in Food Science

Kirigami‐Design‐Enabled Hydrogel Multimorphs with Application as a Multistate Switch

Contact Info

Product

Resources

About