3D printing of electrically conductive and degradable hydrogel for epidermal strain sensor

Guo, Binbin; Zhong, Yukun; Chen, Xiaoteng; Yu, Shixiang; Bai, Jiaming

doi:10.1016/j.coco.2022.101454

Cited by 37 publications

(16 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The enhancement in the mechanical properties of the LiCl-soaked hydrogels may be ascribed to the increased hydrophobic associations between the poly(propylene glycol) blocks intramicellularly due to salt percolation into the micelle , The stress is greater than many other reported DLP-printed hydrogels (Figure S11A). ,− The Young’s modulus of the ionic hydrogel also showed a 1.8 times increase to 49 kPa (Figure S11B), but it was still in the range of those of human soft tissues . However, no significant difference in the G ′ of the hydrogel was found before and after LiCl percolation (Figure S11C).…”

Section: Resultsmentioning

confidence: 95%

Digital Light Processing 4D Printing of Poloxamer Micelles for Facile Fabrication of Multifunctional Biocompatible Hydrogels as Tailored Wearable Sensors

Shi,

Jang,

Kuss

et al. 2024

ACS Nano

View full text Add to dashboard Cite

The lack of both digital light processing (DLP) compatible and biocompatible photopolymers, along with inappropriate material properties required for wearable sensor applications, substantially hinders the employment of DLP 3D printing in the fabrication of multifunctional hydrogels. Herein, we discovered and implemented a photoreactive poloxamer derivative, Pluronic F-127 diacrylate, which overcomes these limitations and is optimized to achieve DLP 3D printed micelle-based hydrogels with high structural complexity, resolution, and precision. In addition, the dehydrated hydrogels exhibit a shape-memory effect and are conformally attached to the geometry of the detection point after rehydration, which implies the 4D printing characteristic of the fabrication process and is beneficial for the storage and application of the device. The excellent cytocompatibility and in vivo biocompatibility further strengthen the potential application of the poloxamer micelle-based hydrogels as a platform for multifunctional wearable systems. After processing them with a lithium chloride (LiCl) solution, multifunctional conductive ionic hydrogels with antifreezing and antiswelling properties along with good transparency and water retention are easily prepared. As capacitive flexible sensors, the DLP 3D printed micelle-based hydrogel devices exhibit excellent sensitivity, cycling stability, and durability in detecting multimodal deformations. Moreover, the DLP 3D printed conductive hydrogels are successfully applied as real-time human motion and tactile sensors with satisfactory sensing performances even in a −20 °C low-temperature environment.

show abstract

Section: Resultsmentioning

confidence: 95%

Digital Light Processing 4D Printing of Poloxamer Micelles for Facile Fabrication of Multifunctional Biocompatible Hydrogels as Tailored Wearable Sensors

Shi,

Jang,

Kuss

et al. 2024

ACS Nano

View full text Add to dashboard Cite

show abstract

“…For example, Guo et al . 170 utilized DLP technology to fabricate a biodegradable poly(ACMO)/Pt hydrogel sensor with electronic conductivity. With the high resolution of DLP technology, this sensor exhibited an ultra-high gauge factor (GF) ranging from 1.5 to 7.2 within a strain range of 10–100%, while maintaining good cyclic stability, making it suitable for monitoring a variety of human activities.…”

Section: D Printing Of Conductive Hydrogel-based Wearable Sensorsmentioning

confidence: 99%

Recent progress in the development of conductive hydrogels and the application in 3D printed wearable sensors

Lin,

Yang,

2023

RSC Appl. Polym.

View full text Add to dashboard Cite

show abstract

“…al. [37] Figure 1. Schematic of 3D printed spider-web-like PM hydrogel sensor for wearable electronics.…”

Section: Introductionmentioning

confidence: 99%

“…al. [ 37 ] created poly N‐acryloylmorpholine/Pt hydrogel sensor with a special structure to achieve high sensitivity and good cycling stability to monitor various human activities. Wu et.…”

Section: Introductionmentioning

confidence: 99%

3D Printed Sensors for Wearable Electronics and Smart Gesture Recognition

Wu,

Ma,

Tao

et al. 2024

Adv Materials Technologies

View full text Add to dashboard Cite

Modern materials with unique structures and functions are inspired by nature. However, nature's craftsmanship is beyond the reach of traditional handmade techniques. 3D printing technology creates the possibility of creating bionic structures. In this study, inspired by the ability of spiders to sense the capture of prey through the vibration of their webs, a spider‐web‐like, highly sensitive hydrogel sensor is designed and printed. The hydrogel is made of eco‐friendly green polyvinyl alcohol cross‐linked with microcrystalline cellulose. Surprisingly, the 3D‐printed hydrogel sensor can manipulate the sensitivity by changing the angle and strain range of the structure. Accordingly, the Gauge factor (GF) of the 3D‐printed hydrogel (θ = 60°) is up to 58.23, which is 23.9 times higher than that of the non‐3D‐printed hydrogel sensor (GF = 2.43). The GF of the 3D‐printed hydrogel at other angles still remained high at 24.74 (θ = 90°) and 12.31 (θ = 120°), respectively. It can be seen that the 3D‐printed hydrogel sensor has advanced performance. In addition, an intelligent gesture recognition system for human–computer interaction is constructed using 3D‐printed hydrogel sensors, which offers potential prospects for helping people communicate.

show abstract

3D printing of electrically conductive and degradable hydrogel for epidermal strain sensor

Cited by 37 publications

References 22 publications

Digital Light Processing 4D Printing of Poloxamer Micelles for Facile Fabrication of Multifunctional Biocompatible Hydrogels as Tailored Wearable Sensors

Digital Light Processing 4D Printing of Poloxamer Micelles for Facile Fabrication of Multifunctional Biocompatible Hydrogels as Tailored Wearable Sensors

Recent progress in the development of conductive hydrogels and the application in 3D printed wearable sensors

3D Printed Sensors for Wearable Electronics and Smart Gesture Recognition

Contact Info

Product

Resources

About