Hierarchical Piezoelectric Composites for Noninvasive Continuous Cardiovascular Monitoring

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(26)

Published: April 4, 2024

Continuous monitoring of blood pressure (BP) and multiparametric analysis cardiac functions are crucial for the early diagnosis therapy cardiovascular diseases. However, existing approaches often suffer from bulky intrusive apparatus, cumbersome testing procedures, challenging data processing, hampering their applications in continuous monitoring. Here, a heterogeneously hierarchical piezoelectric composite is introduced wearable BP function monitoring, overcoming rigidity ceramic insensitivity polymer. By optimizing structure components composite, developed sensor delivers impressive performances, ensuring accurate at Grade A level. Furthermore, hemodynamic parameters extracted detected signals, such as local pulse wave velocity, output, stroke volume, all which alignment with clinical results. Finally, all-day tracking validates reliability stability sensor, highlighting its potential personalized healthcare systems, particularly timely intervention disease.

Language: Английский

---

Lignocellulose‐Mediated Functionalization of Liquid Metals toward the Frontiers of Multifunctional Materials

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

Published: Nov. 21, 2024

Lignocellulose-mediated liquid metal (LM) composites, as emerging functional materials, show tremendous potential for a variety of applications. The abundant hydroxyl, carboxyl, and other polar groups in lignocellulose facilitate the formation strong chemical bonds with LM surfaces, enhancing wettability adhesion improved interface compatibility. Beyond serving supportive matrix, can be tailored to optimize microstructure adapting them diverse This review comprehensively summarizes fundamental principles recent advancements lignocellulose-mediated highlighting advantages composite fabrication, including facile synthesis, versatile interactions, inherent functionalities. Key modulation strategies LMs innovative synthesis methods functionalized composites are discussed. Furthermore, roles structure-performance relationships these electromagnetic shielding, flexible sensors, energy storage devices systematically summarized. Finally, obstacles prospective pertaining thoroughly scrutinized deliberated upon. is expected provide basic guidance researchers boost popularity applications useful references design state-of-the-art LMs.

Language: Английский

---

Quantitative softness and texture bimodal haptic sensors for robotic clinical feature identification and intelligent picking

Science Advances, Journal Year: 2024, Volume and Issue: 10(30)

Published: July 24, 2024

Replicating human somatosensory networks in robots is crucial for dexterous manipulation, ensuring the appropriate grasping force objects of varying softness and textures. Despite advances artificial haptic sensing object recognition, accurately quantifying perceptions to discern texture remains challenging. Here, we report a methodology that uses bimodal sensor capture multidimensional static dynamic stimuli, allowing simultaneous quantification features. This method demonstrates synergistic measurements elastic frictional coefficients, thereby providing universal strategy acquiring adaptive gripping necessary scarless, antislippage interaction with delicate objects. Equipped this sensor, robotic manipulator identifies porcine mucosal features 98.44% accuracy stably grasps visually indistinguishable mature white strawberries, enabling reliable tissue palpation intelligent picking. The design concept comprehensive guidelines presented would provide insights into development, promising benefits robotics.

Language: Английский

---

Recent advances and progress on the design, fabrication and biomedical applications of Gallium liquid metals-based functional materials

Colloids and Surfaces B Biointerfaces, Journal Year: 2024, Volume and Issue: 238, P. 113888 - 113888

Published: April 1, 2024

Language: Английский

---

Transient charge-driven 3D conformal printing via pulsed-plasma impingement

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(22)

Published: May 21, 2024

Seamless integration of microstructures and circuits on three-dimensional (3D) complex surfaces is significance catalyzing the emergence many innovative 3D curvy electronic devices. However, patterning fine features arbitrary targets remains challenging. Here, we propose a facile charge-driven electrohydrodynamic microprinting technique that allows micron- even submicron-scale functional inks couple 3D-shaped dielectrics via an atmospheric-pressure cold plasma jet. Relying transient charging exposed sites arising from weakly ionized gas jet, specified charge programmably deposited onto surface as virtual electrode with spatial time spans ~mm in diameter ~μs duration to generate localized electric field accordantly. Therefore, wide range viscosities can be directly drawn out micro-orifices both two-dimensional (2D) planar curved curvature radius down ~1 mm inner wall narrow cavities electrostatic attraction, exhibiting printing resolution ~450 nm. In addition, several conformal devices were successfully printed dielectric objects. Self-aligned microprinting, stacking layers up 1400, also achieved due electrified surfaces. This microplasma-induced exhibits great advantages such ultrahigh resolution, excellent compatibility substrates, antigravity droplet dispersion, omnidirectional freeform It could provide promising solution for intimately fabricating

Language: Английский

---

Liquid metals and electrospun nanofibers: A magical marriage for wearable electronics

Nano Energy, Journal Year: 2024, Volume and Issue: 129, P. 110078 - 110078

Published: Aug. 2, 2024

Language: Английский

---

High‐performance p‐n Thermocells by Interface Optimization Based on Liquid Metal for Powering Wearable Devices

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

Published: Jan. 2, 2025

Abstract Using body heat as a sustainable energy source through the thermoelectric effect to power wearable electronics is promising. Ionic materials based on thermogalvanic can generate stable voltage under low‐temperature differences, but their low thermopower and poor contact interface with electrodes hinder practical use. In this study, strong chaotropic salts are utilized modify solvation shells of ions, increasing p‐type redox couple [Fe(CN)₆] 3 ⁻/[Fe(CN)₆]⁴⁻ 3.98 mV K −1 . Additionally, Arrhenius acid introduced inhibit deprotonation n‐type Fe ⁺/Fe 2 ⁺, enhancing −2.29 Liquid metal electrodes, excellent deformability hydrogen bonding hydrogel surfaces, effectively reduce resistance thermocells. Thus, pair p‐n thermocells achieve output 118 current density 4.5 A m − , maximum 0.11 W (Δ T = 5 K). device integrated 18 pairs 2.2 V from continuously portable electronic devices. This work demonstrates promising potential self‐powered devices for daily applications.

Language: Английский

---

PDMS-encapsulated liquid metal-MXene aerogels for resilient electromagnetic wave absorption in harsh environments

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Language: Английский

---

Ultra Stable and Stretchable Liquid-Metal Precisely Patterned Circuits for Integrated Wearable Devices under Heat-Pressed

Composites Part B Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112439 - 112439

Published: March 1, 2025

Language: Английский

---

Proof of principle demonstration of electro driven silver nanowire for stretchable circuit junctions

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 14, 2025

The interlayer connection of circuits within stretchable electronic devices is crucial for enhancing their performance. Conventional methods circuit connections are fragile and prone to mechanical deformation, prompting the need new approaches. Although various have been proposed creating interconnections in circuits, a universally efficient method junctions remains be fully developed. In this study, we propose connect interlayers using electro-driven silver nanowires. By comparing conventional junction with our method, verify efficiency approach. results reveal that applying high electric field during solidification aligns isotropic state nanowires parallel field, thereby increasing conductivity junction. Additionally, study demonstrates provides better stability compared bulk material, as verified through stretch experiments. An in-depth analysis mathematical modeling presented at end study. promising approach expected pave way efficiency.

Language: Английский

---