A5067980386- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Innovative Energy Harvesting Technologies
- Supercapacitor Materials and Fabrication
- Tactile and Sensory Interactions
- Structural Analysis and Optimization
- Gas Sensing Nanomaterials and Sensors
- Acoustic Wave Resonator Technologies
- Photonic and Optical Devices
- Green IT and Sustainability
- Optical and Acousto-Optic Technologies
- Advanced Thermoelectric Materials and Devices
- Atmospheric Ozone and Climate
- RFID technology advancements
- Optical Polarization and Ellipsometry
- Photovoltaic System Optimization Techniques
- Thermal Radiation and Cooling Technologies
- Energy Harvesting in Wireless Networks
- BIM and Construction Integration
- Robotic Mechanisms and Dynamics
- Nuclear reactor physics and engineering
- Solar-Powered Water Purification Methods
- High voltage insulation and dielectric phenomena
- Educational Reforms and Innovations
- Photorefractive and Nonlinear Optics
Hong Kong University of Science and Technology
2022-2025
University of Hong Kong
2022-2025
Chinese University of Hong Kong
2018-2023
Luminit (United States)
2013
Physical Optics Corporation
2008-2011
Abstract Surface wear is a major hindrance in the solid/solid interface of triboelectric nanogenerators (TENG), severely affecting their output performance and stability. To reduce mechanical input surface wear, solid/liquid-interface alternatives have been investigated; however, charge generation capability still lower than that previously reported solid/solid-interface TENGs. Thus, achieving with high low remains technological challenge. Here, we employ metallic glass as one show it can...
Multimodal haptic perception is essential for enhancing perceptual experiences in augmented reality applications. To date, several artificial tactile interfaces have been developed to perceive pressure and precontact signals, while simultaneously detecting object type softness with quantified modulus still remains challenging. Here, inspired by the campaniform sensilla on insect antennae, we proposed a hemispherical bimodal intelligent sensor (BITS) array using triboelectric effect. The...
Abstract To quantitatively evaluate the output performance of triboelectric nanogenerators, figures merit have been developed. However, current merit, without considering breakdown effect that seriously affects effective maximized energy output, are limited for application. Meanwhile, a method to capability nanogenerators is needed. Here, standardized considers proposed assessment nanogenerators. Contact separation and contact freestanding-triboelectric-layer modes used demonstrate this...
Abstract Triboelectric nanogenerators have attracted wide attention due to their promising capabilities of scavenging the ambient environmental mechanical energy. However, efficient energy management generated high-voltage for practical low-voltage applications is still under investigation. Autonomous switches are key elements improving harvested per cycle, but they complicated implement at such voltages higher than several hundreds volts. This paper proposes a self-sustained and automatic...
Abstract Through years of development, the triboelectric nanogenerator (TENG) has been demonstrated as a burgeoning efficient energy harvester. Plenty efforts have devoted to further improving electric output performance through material/surface optimization, ion implantation or external circuit. However, all these methods cannot break fundamental limitation brought by inevitable electrical breakdown effect, and thus density is restricted. Here, method for enhancing threshold TENGs proposed...
The rapid development of the Internet Things depends on wireless devices and their network. Traditional sensing transmission technology still requires multiple modules for sensing, signal modulation, transmission, power, making whole system bulky, rigid, costly. Here, we proposed a paradigm shift solution based breakdown discharge–induced displacement current. Through that, can combine abovementioned functional in single unit self-powered e-sticker (SWISE), which features small size (down to...
CO 2 pumped into nanogenerators in ocean for wave energy collection can offset carbon emissions, producing eco-friendly energy. LCA shows that the production of 1 kW electricity emits approximately 42 g dioxide, which is comparable to traditional wind
A comprehensive strategy including charge excitation, interface insulation, and material screening was employed to achieve a record-high output energy density of 4.3 × 10 5 J m −3 for triboelectric nanogenerator.
Abstract Triboelectric nanogenerators (TENGs) are a promising power and sensing solution for biomedical applications attributed to the high electrical output sensitivity with low‐cost widely available materials. Here, recent developments in TENG‐based various structures functionalities discussed summarized. Wearable TENGs perform well motion respiratory monitoring excellent flexibility low bio‐risks. Implantable enable interactions cardio‐cerebral vascular system nervous monitor treat...
Nanogenerators have been demonstrated as a high-efficiency energy harvesting technology, while methods to evaluate merits of nanogenerators are being focused. Energy density, common way for evaluating devices, is believed be strongly related the output performance limit nanogenerators. Hence, this report introduces an evaluation standard, With sliding freestanding mode TENG example, theoretical simulations conducted and experimental developed understand optimize maximal with breakdown effect...
The rapid development of the internet things and autonomous vehicles requires plenty sensors to monitor environmental conditions continuously. Hence, high energy density reliable power supply are demanded. nonlinear oscillator has been widely utilized enhance output performance piezoelectric electromagnetic harvesters, which can operate in high-energy orbits under proper excitation frequencies. Here, oscillator-based triboelectric nanogenerator (NL-TENG) is proposed based on grating...
This study presents the design and analysis of a thermal energy harvester that integrates thermoacoustic engine (TAE) with honeycomb-structured triboelectric nanogenerator (H-TENG), referred to as TAEH-TENG. is specifically developed demonstrate potential harvesting for low-power Internet Things (IoT) applications. By leveraging high conversion efficiency TAEs exceptional robustness H-TENGs, this overcomes limitations traditional designs, which often involve complex or costly components. The...
The purpose of this paper is to explore the mechanism Law People's Republic China on Promotion Rural Revitalization (hereinafter referred as Revitalization) in promoting rural revitalization, well optimization strategy revitalization terms rule law. study points out that Law, a promotion law with soft characteristics, mobilizes enthusiasm all parties through incentive provisions and policy resource allocation, legalizes policies, provides framework for realizing common prosperity. article...
The output voltage of triboelectric nanogenerators (TENGs) is much higher than the overload capacity most commercial electronics, making it hard to power them directly; so power-management solution indispensable. In meanwhile, critical for practical applications enhance performance TENG toward its breakdown limit, which usually ignored before. Here, an inductor-free multiplier (OM) promotion and management TENGs proposed, with effect considered. This OM, as expanded based on bennet's...
Traditional metal detectors are relatively expensive, bulky, and inflexible, they require an external power source; all of this limits their usage. Here, we present a self-powered wireless detector enabled by the triboelectric discharge effect, inductive coupling, signal modulation strategy. The device can convert mechanical triggers into electromagnetic waves that contain information on nearby metals. Based strategy, fabricated two prototypes with different sizes trigger modes, thus showing...
Flow sensing exhibits significant potential for monitoring, controlling, and optimizing processes in industries, resource management, environmental protection. However, achieving wireless real-time omnidirectional of gas/liquid flow on a simple, self-contained device without external power support has remained formidable challenge. In this study, compact-sized, fully self-powered flowmeter (CSWF) is introduced with small size diameter down to less than 50 mm, which can transmit signals, as...
With the development of internet things (IoT) and 5th generation communication technology, construction smart cities is making a great progress. However, IoT system needs millions sensing nodes; therefore, it rather challenging to power various sensors. Here, we design an electrostatic force-based switch (EFS) that can work as either optical or electrical switch. The EFS provides method directly detect control high-voltage systems with delay characteristics. Advantages include self-contained...
Abstract The surface charge decay is observed at high temperatures due to thermionic emission, which, however, may not be the only mechanism contributing variation. Here, a triboelectric promotion strategy heat‐excitation effect of hot electrons near fermi level demonstrated, while final determined by balance between emission and effect. It demonstrated that metals with lower work function exhibit better heat excitation capability, polymers fluorine content in molecule chains further boost...