Softening, Conformable, and Stretchable Conductors for Implantable Bioelectronics Interfaces DOI
Pedro Emanuel Rocha-Flores, Chandani Chitrakar, Ovidio Rodriguez‐Lopez

et al.

Advanced Materials Technologies, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

Abstract Neural implantable devices serve as electronic interfaces facilitating communication between the body and external systems. These bioelectronic systems ideally possess stable electrical conductivity, flexibility, stretchability to accommodate dynamic movements within body. However, achieving both high conductivity mechanical compatibility remains a challenge. Effective conductors tend be rigid stiff, leading substantial mismatch with bodily tissues. On other hand, highly stretchable polymers, while mechanically compatible, often suffer from limited lithography techniques reduced stability. Therefore, there exists pressing need develop electromechanically neural that enable precise biological In this study, polymer is softening, flexible, conformal, compatible microfabricate perforated thin‐film architectures utilized. offer improved compatibility. Three distinct geometries are evaluated electrically under in vitro conditions simulate physiological environments. Notably, Peano structure demonstrates minimal changes resistance, varying less than 1.5× even when subjected ≈150% strain. Furthermore, exhibit maximum elongation before fracture, reaching 220%. Finally, application of multi‐electrode spinal cord leads employing titanium nitride for stimulation rat models demonstrated.

Language: Английский

Recent progress on general wearable electrical heating textiles enabled by functional fibers DOI

Faqiang Wang,

Yiming Liu, Jianyong Yu

et al.

Nano Energy, Journal Year: 2024, Volume and Issue: 124, P. 109497 - 109497

Published: March 16, 2024

Language: Английский

Citations

31
Stretchable, Self-Rolled, Microfluidic Electronics Enable Conformable Neural Interfaces of Brain and Vagus Neuromodulation DOI
Ruihua Dong, Lulu Wang, Zebin Li

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(2), P. 1702 - 1713

Published: Jan. 2, 2024

Implantable neuroelectronic interfaces have gained significant importance in long-term brain-computer interfacing and neuroscience therapy. However, due to the mechanical geometrical mismatches between electrode-nerve interfaces, personalized compatible neural remain serious issues for peripheral neuromodulation. This study introduces stretchable flexible electronics class as a self-rolled interface neurological diagnosis modulation. These are made from liquid metal-polymer conductors with high resolution of 30 μm using microfluidic printing technology. They exhibit conformability stretchability (over 600% strain) during body movements good biocompatibility implantation 8 weeks). offer real-time monitoring epileptiform activities excellent soft brain tissue. The also develops electrodes that tightly wind deforming nerves minimal constraint (160 diameter).

Language: Английский

Citations

13
Diblock Copolymer Brush‐Based Adhesion Coupling Agents DOI Open Access
Jun Zhao, Menglin Li, Xiayun Huang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Abstract Traditional adhesion coupling agents based on small molecules often face challenges such as uneven interface distribution, sensitivity to humidity, and lack of energy dissipation in bulk adhesives, which limit both performance long‐term reliability. In this work, amphiphilic block copolymer brushes are presented a new type agent overcome these issues. The hydrophilic forms stable, multi‐site interactions with the substrate, while hydrophobic penetrates entangles adhesive matrix, facilitating effective transmission across broader zone. For instance, before grafting brushes, strength between copper polydimethylsiloxane is only 0.5 MPa, but after grafting, increased 8.2 representing 16.4‐fold improvement, even absence covalent bonding, surpassing previous enhancement strategies. remained strong under various harsh conditions, including thermal aging, cycling, high temperature/high immersion water. This adaptive approach, allows for customization compositions, offers great potential wide range applications, flexible electronics, microfluidics, coatings, sealing technologies.

Language: Английский

Citations

1
Liquid metal–hydrogel composites for flexible electronics DOI
Jianhui Chen, Gongwei Tian,

Cuiyuan Liang

et al.

Chemical Communications, Journal Year: 2023, Volume and Issue: 59(97), P. 14353 - 14369

Published: Jan. 1, 2023

As an emerging functional material, liquid metal–hydrogel composites exhibit excellent biosafety, high electrical conductivity, tunable mechanical properties etc., providing a unique platform for wide range of flexible electronics applications.

Language: Английский

Citations

13
Photothermal and enhanced chemodynamic reinforced anti-tumor therapy based on PDA@POM nanocomposites DOI

Qingyao Meng,

Wenxin Wang, Haozhe Wang

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 678, P. 796 - 803

Published: Sept. 18, 2024

Language: Английский

Citations

4
Neural electrodes for brain‐computer interface system: From rigid to soft DOI Creative Commons
Dan Yang, Gongwei Tian, Jianhui Chen

et al.

BMEMat, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 12, 2025

Abstract Brain‐computer interface (BCI) is an advanced technology that establishes a direct connection between the brain and external devices, enabling high‐speed real‐time information exchange. In BCI systems, electrodes are key devices responsible for transmitting signals including recording electrophysiological electrically stimulating nerves. Early were mainly composed of rigid materials. The mismatch in Young's modulus soft biological tissue can lead to rejection reactions within system, resulting electrode failure. Furthermore, prone damaging tissues during implantation use. Recently, flexible have garnered attention field science research due their better adaptability softness curvature brain. design effectively reduce mechanical damage neural improve accuracy stability signal transmission, providing new tools methods exploring function mechanisms developing novel technologies. Here, we review advancements systems. This paper emphasizes importance discusses limitations traditional electrodes, introduces various types detail. addition, also explore practical application scenarios future development trends technology, aiming offer valuable insights enhancing performance user experience

Language: Английский

Citations

0
A permeable, metal-like conductivity, stretchable, strain-insensitivity, self-assembled and rapidly formed Janus-structured e-skin DOI
Shengxin Xiang, Wei Xiao, Lei Liu

et al.

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110712 - 110712

Published: Jan. 1, 2025

Language: Английский

Citations

0
Flexible Electronic Devices and Wearable Sensors Based on Liquid Metals DOI Creative Commons
Xiang Li,

Guancheng Wu,

Chen Gao

et al.

MetalMat, Journal Year: 2025, Volume and Issue: unknown

Published: March 15, 2025

ABSTRACT Stretchable electronic devices play a key role in bridging various components, especially flexible and complex multifunctional logic circuits, as well information recognition transmission systems. The stretchability stability of solid metal‐based stretchable electrodes are still limited due to their intrinsic rigidity. Liquid metals one the most popular materials for high conductivity, flexibility, machinability. However, surface tension liquid is extremely at room temperature, hindering applications. In this review, recent developments conductive fillers field reviewed detail firstly. Besides, combination on different substrates according types classified summarized. Furthermore, applications electronics with single multiple functions systematically discussed. A brief perspective future research given. We believe that review would provide promising path direction fabrication functional high‐performance devices.

Language: Английский

Citations

0
Crack propagation controlling via sliding cyclodextrin for high-density sensor array DOI
Xin Xu,

Shize Fang,

Zijun Xu

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161769 - 161769

Published: March 1, 2025

Language: Английский

Citations

0
Conjugated Multiblock Copolymers and Microcracked Gold Electrodes Applied for the Intrinsically Stretchable Field-Effect Transistor DOI Creative Commons

Yao-Tsung Huang,

Shuto Yamamoto,

Jung‐Yao Chen

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

The rise of flexible electronic devices has led to extensive research into conjugated polymer structural engineering. Integrating channels and contact electrodes, warranting high stretchability, is still critical, the microcracked gold technique provides a potential strategy integrate them. Conjugated block copolymers have gained significant attention due their flexibility, allowing for tailored structures meet specific requirements different device characteristics. In this study, novel N-type multiblock (multi-BCPs) composed rigid poly(naphthalene diimide-alt-bithiophene) polyisobutylene segments were successfully synthesized as semiconductors first time. materials are named based on weight fraction soft segments: NDI (0 wt %), mAB73 (27 mAB60 (40 %). study explores mechanical properties, crystallinity, electrical performance multi-BCPs. results show that introducing significantly enhances with crack-onset strains beyond 100% because low elastic moduli 40–50 MPa. Furthermore, OFET achieves unchanged mobility under strain, outperforming excessive blocks. At end an integrated stretchable stretchability fulfilled by utilizing combine multi-BCP electrodes. can be applied biomedical electronics without toxic or corrosive electrode materials. influencing factors, including resistance, channel charge mobility, systematically studied investigate device's mobility–stretchability relationship. indicate resistance between electrodes essential performance. Among these, mAB73, containing segments, exhibits more stability than infiltrated nanoparticles in rubbery surface. Appropriately incorporating retention tensile strains, highlighting designs applications.

Language: Английский

Citations

0