Self-Propelling Water Droplets on Conical Spikes with Sawtooth Surface Structure DOI Creative Commons
Abubaker S. Omer, Aikifa Raza, Tiejun Zhang

et al.

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

Published: May 16, 2025

Directional fluid transport is critical for water, energy, and biomedical applications, including passive fog harvesting. The unique shape gradient of conical structures can induce capillary pressure drive the self-propulsion droplets as settle on wettable sharp cones move toward cone base they grow. In this work, we achieve droplet by fabricating spikes with sawtooth imbricated (reversed-sawtooth) surface via high-resolution 3D printing. Fog harvesting experiments various indicate that structure exhibits most efficient mobilization spike base, while promotes isolated formation delayed smooth would keep stationary unless coalescences occur. Further motion analysis reveals flat exerts 3.5 times more hysteresis force than one under dry conditions nearly twice wet conditions. During harvesting, microdroplets in fill teeth gaps along water-wet spike, resulting big barrel a series stop-and-go motions when it continues growing. Our quantitative interplay between forces responsible self-propulsion. array further demonstrate water rate 10 μm spacing 20 triple 40 spacing.

Language: Английский

Highly ammonia-sensitive triboelectric materials enabled by gas-sensing enhancement effect DOI
Yi Luo, Jianfeng Li, Juanxia He

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160466 - 160466

Published: Feb. 1, 2025

Language: Английский

Citations

3
Bioinspired Dual‐Function Device Integrating Fog Harvesting and Hydro‐To‐Electricity Conversion for Sustainable Supply of Freshwater and Electricity DOI

Wen Zhou,

Xiaohui Zhu,

Zijing Quan

et al.

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

Published: Feb. 9, 2025

Abstract Utilizing ubiquitous fog to engineer a dual‐function device that integrates harvesting and hydro‐to‐electricity conversion, thereby overcoming geographical hydrological constraints, provides an opportunity promote sustainable freshwater electricity supply. However, inefficiency remains the key challenge advancement of energy development practical applications. Herein, bio‐inspired (BDFD) integrating efficient solid‐liquid triboelectricity nanogenerator is developed. Specifically, biomimetic fog‐water collector (BFWC) designed inspired by excellent fog‐catching capability Cactus ultra‐fast water transport Sarracenia. BFWC then combined with triboelectric develop BDFD. Additionally, mechanism which structural parameters influence mist condensation revealed. The effects height, angle, frequency condensate droplets on power generation performance are also systematically investigated. Remarkably, achieved collection efficiency 48940 mg cm −2 h −1 , 305% improvement over non‐bionic samples. Meanwhile, transfer charge quantified at 28.9 nC, demonstrating BDFD can efficiently convert mechanical condensed droplet into electrical energy. Therefore, this bionic strategy enhances atmospheric utilization apparatus offers prospects for mitigating deficiencies in resources.

Language: Английский

Citations

1
Designing amphiphilic phase change cellulose nanofiber via carboxylic groups assisted grafting for fog water harvesting DOI
Chaoqun Xu, Juan Yu, Bowen Li

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161285 - 161285

Published: March 1, 2025

Language: Английский

Citations

1
Biomimetic Superhydrophobic Triboelectric Surface Prepared by Interfacial Self‐Assembly for Water Harvesting DOI
Puyang Zhang, Song Zhang, Xiuzhen Li

et al.

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

Published: Oct. 27, 2024

Abstract Extracting water from air offers a promising route to address the global challenge of scarcity. However, bionic engineering surfaces for harvesting often struggle with efficiently coordinating droplet nucleation and desorption. The recently emerging triboelectric effect at liquid–solid interface novel approach developing fog surfaces. In this study, inspired by Namib Desert beetles lotus leaves, biomimetic superhydrophobic surface nanoscale hydrophilic domains is prepared via interfacial self‐assembly, exhibiting heterogeneous wettability effective harvesting. essence self‐assembly lies in synergy non‐covalent interaction forces, driving nanoparticles into micro‐nano hierarchical structures, thereby regulating increasing potential sites. Additionally, can directly utilize charges facilitate migration. be generated flexible mechanical input induced walking, which enhances mass transfer, rapidly improving removal achieving 39.02% increase efficiency. This study has opened up new breakthrough design portable efficient systems.

Language: Английский

Citations

8
Liquid Metal-Promoted Supramolecular Interactions Enable Ultrafast Self-Healing Triboelectric Materials with High Performance at Room Temperature DOI

Weiqing Peng,

Ye Zhang, Zhijun Zhang

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Soft self-healing materials are excellent candidates for wearable devices to power sensors due their compliance, extensibility, and self-restorability. However, combining ultrafast autonomous restorative properties with mechanical capabilities application in self-powered device still poses challenges. Utilizing the high mobility conductivity of liquid metal, this paper incorporates it into polydimethylsiloxane by a supramolecular interfacial assembly strategy prepare triboelectric material ultrahigh stretchability (12000%) remarkable (30 min at ∼25 °C). The dynamic bonds endow universal ability under extreme environments (-20 °C, near infrared, underwater), durability, (100 V 0.81 W/m2). By integrating devices, real-time feedback on human joint movement is enabled. This work offers valuable balance trade-off between shape adaptation self-healing, paving way enhanced applicability sensing applications.

Language: Английский

Citations

0
A Pulsed Bubble‐Driven Efficient Liquid‐Solid Triboelectric Nanogenerator DOI Open Access
Tao Liu, Xuemin Cui,

Ziyi Ye

et al.

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

Published: Nov. 14, 2024

Abstract Harnessing energy from underwater bubbles has garnered significant attention, particularly for powering off‐grid circuitry. However, the efficiency of bubble‐driven liquid‐solid interface charge transfer remains low. This research unveils a phenomenon: accelerated bubble slippage enhances interfacial transfer. Building upon this discovery, pulse bubble‐based power generation technique is proposed, achieving an density 24.2 mJ L −1 generated by pulsed bubbles. The crux lies in precise control impact velocity. By meticulously regulating kinetic bubbles, accumulated potential multiple small converted into instantaneous energy. A typical controlled within 72 ms timeframe, unleashing surge that can directly illuminate 400 light‐emitting diodes. approach represents groundbreaking advancement harvesting technology, dramatically expanding its applications.

Language: Английский

Citations

3
Robust Droplet-Based Triboelectric Nanogenerator Enabled by Semicrystalline Composites Integration for Harsh Environments DOI

Yanxu Lu,

Yanwei Xiao,

Zhongxin Dong

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

The development of a high-performance polymer for robust droplet-based triboelectric nanogenerator (RD-TENG) is crucial sustainable energy harvesting and adaptive sensing applications in harsh environments. However, achieving thermal chemical stability dielectrics induction electrodes remains challenge. This study addresses these requirements by leveraging the intrinsic properties polyether ether ketone (PEEK), which enables semicrystalline composites integration through bonding technique. rigid molecular backbone PEEK crystalline regions formed its orderly arrangement impart thermomechanical stability. Incorporating multiwalled carbon nanotubes allows tailoring low surface resistance mechanical reinforcement. results demonstrate high glass transition temperature 160 °C structural integrity at 300 °C, along with exceptional durability electrical performance under long-term salt spray, wide pH range, organic solvents. work offers valuable strategy fabricating RD-TENG promotes advancements

Language: Английский

Citations

0
Self-Propelling Water Droplets on Conical Spikes with Sawtooth Surface Structure DOI Creative Commons
Abubaker S. Omer, Aikifa Raza, Tiejun Zhang

et al.

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

Published: May 16, 2025

Directional fluid transport is critical for water, energy, and biomedical applications, including passive fog harvesting. The unique shape gradient of conical structures can induce capillary pressure drive the self-propulsion droplets as settle on wettable sharp cones move toward cone base they grow. In this work, we achieve droplet by fabricating spikes with sawtooth imbricated (reversed-sawtooth) surface via high-resolution 3D printing. Fog harvesting experiments various indicate that structure exhibits most efficient mobilization spike base, while promotes isolated formation delayed smooth would keep stationary unless coalescences occur. Further motion analysis reveals flat exerts 3.5 times more hysteresis force than one under dry conditions nearly twice wet conditions. During harvesting, microdroplets in fill teeth gaps along water-wet spike, resulting big barrel a series stop-and-go motions when it continues growing. Our quantitative interplay between forces responsible self-propulsion. array further demonstrate water rate 10 μm spacing 20 triple 40 spacing.

Language: Английский

Citations

0