A paradigm shift from traditional non-contact sensors to tele-perception
This review explores the paradigm shift from traditional non-contact sensors to tele-perception, highlighting the foundational principles, representative system architectures, and cutting-edge optimization strategies.
A comprehensive review on the mechanism of contact electrification
This review summarizes the mechanisms, regulations, influencing factors, and application prospects of contact electrification at different interfaces.
Artificial intelligence assisted nanogenerator applications
This review examines the integration of artificial intelligence with nanogenerators to develop self-powered, adaptive systems for applications in robotics, wearables, and environmental monitoring.
Paper
Machine learning-driven gait-assisted self-powered wearable sensing: a triboelectric nanogenerator-based advanced healthcare monitoring
A self-powered TENG-based machine learning-driven insole wearable sensing system for gait-assisted healthcare is designed to classify flat foot conditions, identify users, and monitor rehabilitation and athletic exercises accurately.
Triboelectric nanogenerator for harvesting ultra-high-speed wind energy with high-frequency output
This work presents a TENG for harvesting wind energy at ultra-high wind speeds, achieving high-frequency output signals and enhancing performance. It also expands the application of TENGs in high wind speeds and urban settings.
Inhibitory effects on smooth muscle cell adhesion and proliferation due to oscillating electric fields by nanogenerators
This inhibitory effect was attributed to the EF-induced surface charge oscillation, which weakened the electrostatic interaction between the cell membrane and substrate.
Output power density enhancement of an intermittently contacted metal–semiconductor junction with a water interlayer
The output power density of an intermittently contacted gold–silicon (Au–Si) junction can be increased by about 3 orders of magnitude after introduction of a water (H2O) interlayer between the Au and Si friction layers.
Flexoelectricity-enhanced photovoltaic effect in flexible LiNbO3 nanorod array/PVDF nanocomposites
We investigate the flexoelectricity-enhanced photovoltaic effect on the aligned LiNbO3 nanorod (LN-NR) arrays/PVDF nanocomposites. We demonstrated that the shape of LN nanomaterials can strongly influence the photovoltaic current of the composites, mainly due to the increase of the flexoelectricity.
Performance enhancement of triboelectric nanogenerators and exploration of tactile sensing using an electrospun PAN–MWCNT layer through interface manipulation
Triboelectricity, being ubiquitous, holds promise as an energy source for achieving net zero emissions and self-powered wearables.
Growth of the metal–organic framework ZIF-67 on cellulosic substrates for triboelectric nanogenerators
ZIF-67 grown on cellulosic substrate as robuts active layer for contact-separation and rotating triboelectric nanogenerator.
Paper
High-output, thermally resilient Nano-TiO2 dielectric gel triboelectric nanogenerator for energy harvesting and reliable temperature-independent pressure sensing
By doping TiO2 nanoparticles into PVC gel, a high-output TENG was fabricated, enabling a temperature-independent pressure sensor. This sensor achieved stable sensitivity of 2.03 V kPa−1 (10–40 kPa) and 0.97 V kPa−1 (40–100 kPa) from 25 °C to 55 °C.
Versatile hydrogel towards coupling of energy harvesting and storage for self-powered round-the-clock sensing
In this work, a multifunctional, high-conductivity, flexible, anti-freezing and self-adhesive double-network hydrogel with a 3D interpenetrating framework was designed for energy harvesting and storage for self-powered round-the-clock sensing.
Multi-crosslinked strong, tough and anti-freezing organohydrogels for flexible sensors
The schematic drawings of temperature are replaced by our own artworks and now we confirm that all of the artwork used in the image is our own.
PEO/cysteine composite nanofiber-based triboelectric nanogenerators for harvesting tiny mechanical energy
Triboelectric nanogenerator (TENG) is a promising method for capturing mechanical energy.
A magnetorheological fluid based infinitely-regulatable triboelectric tactile sensor
An adaptive triboelectric pressure sensor offers highly adjustable sensing performance by introducing a magnetorheological fluid. Through the reversible phase transition, it can quickly switch between liquid–solid and solid–solid modes.
About this collection
Ever since the first nanogenerator was invented by Wang’s group in 2005, several important fields: piezoelectric nanogenerators, triboelectric nanogenerators, pyroelectric nanogenerators, self-powered sensors, piezotronics, piezo-phototronics and tribotronics, have been evolved. Through continuous development over the years, various kinds of nanogenerators have been introduced based on their source of energy for harvesting: mechanical energy (triboelectric and piezoelectric nanogenerators), and thermal energy (pyroelectric and thermoelectric nanogenerators). Besides, different functional materials with various properties can be used in the hybridizing and coupling of different nanogenerators for harvesting different energies simultaneously. By deploying many performance-enhancing techniques, nanogenerators can supply power to portable electronics and have greater potential for a revolution in the IoT, AI, and HMI sectors.
Guest Edited by Zhong Lin Wang (Georgia Institute of Technology, USA), Ya Yang (Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, China) and Pooi See Lee (Nanyang Technological University, Singapore), this Journal of Materials Chemistry A and Nanoscale collection captures the cutting-edge innovations in nanomaterials synthesis, simulation, device fabrication, and system integration that are driving this field forward.