Zewei Ren

ORCID: 0000-0002-0061-581X
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About
Contact & Profiles
Research Areas
  • Advanced Sensor and Energy Harvesting Materials
  • Conducting polymers and applications
  • Tactile and Sensory Interactions
  • Innovative Energy Harvesting Technologies
  • Supercapacitor Materials and Fabrication
  • Modular Robots and Swarm Intelligence
  • Advanced Materials and Mechanics
  • Dielectric materials and actuators
  • Polydiacetylene-based materials and applications
  • Gas Sensing Nanomaterials and Sensors
  • Energy Harvesting in Wireless Networks
  • Analytical Chemistry and Sensors
  • Advanced Photocatalysis Techniques
  • Muscle activation and electromyography studies
  • Fuel Cells and Related Materials
  • Optical properties and cooling technologies in crystalline materials
  • Soft Robotics and Applications
  • EEG and Brain-Computer Interfaces
  • RFID technology advancements
  • User Authentication and Security Systems
  • Perovskite Materials and Applications
  • Solid-state spectroscopy and crystallography
  • Surface Modification and Superhydrophobicity
  • 2D Materials and Applications
  • Advanced battery technologies research

Xidian University
2022-2025

Tsinghua University
2025

Beijing Institute of Nanoenergy and Nanosystems
2018-2022

Chinese Academy of Sciences
2018-2022

University of Chinese Academy of Sciences
2018-2021

Tokyo Institute of Technology
2018

National Center for Nanoscience and Technology
2018

As a well-known phenomenon, contact electrification (CE) has been studied for decades. Although recent studies have proven that CE between two solids is primarily due to electron transfer, the mechanism liquid and solid remains controversial. The process different liquids polytetrafluoroethylene (PTFE) film systematically clarify of solid-liquid interface. deionized water PTFE can produce surface charges density in scale 1 nC cm-2 , which ten times higher than calculation based on pure...

10.1002/adma.201905696 article EN Advanced Materials 2019-11-29

Triboelectric nanogenerators are an energy harvesting technology that relies on the coupling effects of contact electrification and electrostatic induction between two solids or a liquid solid. Here, we present triboelectric nanogenerator can work based interaction pure liquids. A liquid-liquid is achieved by passing droplet through freely suspended membrane. We investigate kinds membranes: grounded membrane pre-charged The falling (about 40 μL) generate peak power 137.4 nW Moreover, this...

10.1038/s41467-019-10232-x article EN cc-by Nature Communications 2019-05-22

Electrowetting technique is an actuation method for manipulating position and velocity of fluids in the microchannels. By combining electrowetting a freestanding mode triboelectric nanogenerator (TENG), we have designed self-powered microfluidic transport system. In this system, mini vehicle fabricated by using four droplets to carry pallet (6 mm × 8 mm), it can some tiny object on track electrodes under drive TENG. The motion TENG provide both driving power control signal vehicle. maximum...

10.1021/acsnano.7b08014 article EN ACS Nano 2018-01-17

Abstract A tactile sensor should be able to detect both normal and tangential forces, which is mandatory for simulating human hands, but this fundamental function has been overlooked by most of the previous studies. Here, based on a triboelectric nanogenerator (TENG) with single‐electrode mode, fully elastic metal‐free that can forces proposed. With tiny burr arrays contact interface facilitate deformation, detected pressure device reach 1.5 MPa sensitivity about 51.43 kPa V −1 , large range...

10.1002/adfm.201802989 article EN Advanced Functional Materials 2018-06-06

Abstract Wind is one of the most important sources green energy, but current technology for harvesting wind energy only effective when speed beyond 3.5–4.0 m s −1 . This mainly due to limitation that electromagnetic generator works best at high frequency. means light breezes cannot reach velocity threshold turbines. Here, a high‐performance triboelectric nanogenerator (TENG) efficiently from an ambient gentle wind, especially speeds below 3 reported, by taking advantage relative efficiency...

10.1002/aenm.202001770 article EN Advanced Energy Materials 2020-08-11

Abstract The internet of things in the context ocean is vitally important. For ships sailing on wide adverse weather conditions, evasion marine islands and reefs crucial to ensure safe navigation. Here, a hybrid wave energy harvesting nanogenerator proposed (HW‐NG) as power source for long‐distance wireless transmission, demonstrated self‐powered route avoidance warning system HW‐NG developed based triboelectric (TENG) an electromagnetic generator (EMG), integrated by pendulum structure....

10.1002/aenm.202101116 article EN Advanced Energy Materials 2021-06-25

Triboelectric nanogenerators (TENGs) have been widely applied for energy harvesting and self-powered sensing, whereas smart deformable materials can be combined with the TENG to acquire a more intelligent self-adaptive system. Here, based on vapor-driven actuation material of perfluorosulfonic acid ionomer (PFSA), we propose type humidity-responsive TENG. The integrated array automatically bend desired angles in response different humidity conditions, thus, it effectively collect from both...

10.1021/acsami.8b21477 article EN ACS Applied Materials & Interfaces 2019-01-22

Abstract With increasing global warming, catastrophic floods have threatened people's lives seriously and caused huge economic losses. However, present water hazard alarming systems generally rely on commercial batteries, limiting the intelligent development of disaster prevention planning maintenance costs. In order to break limitation, this work applies triboelectric nanogenerators (TENGs) alarming. A spherical TENG device with four spiral units is designed harvest wave energy, charge...

10.1002/adfm.202205313 article EN Advanced Functional Materials 2022-06-22

Partial Cr substitution for V in the 4 C 3 T x MXene promotes capacitance, discharging potential, and cycle stability of in-plane ZMSCs. The device exhibits a high areal energy density 51.12 μW h cm −2 flexibility index 100.

10.1039/d2ta04747k article EN Journal of Materials Chemistry A 2022-01-01

Piezoelectric organic–inorganic lead halide perovskites have recently attracted much attention in the field of optoelectronic devices. However, their piezoelectric properties as a possible way to modulate device performances rarely been reported. Here, we study experimentally photodetector based on CH3NH3PbI3(MAPbI3) single crystals, whose performance is effectively modulated via an emerging effect—the piezo-phototronic effect, which use polarization charges tune processes at interface. A...

10.1021/acsnano.8b06243 article EN ACS Nano 2018-10-02

Wide-band vibration is abundant in various industrial equipment, but extracting low frequency energy challenging. Here, we demonstrated a trapezoidal cantilever-structure triboelectric nanogenerator (C-TENG) that can efficiently harvest from the range of 1-22 Hz. The C-TENG fabricated with flexible film electrode, and its mechanical model analyzed structural mechanics for optimal performance device. source as 1 Hz, output power density reaches 62.2 W/m3 at 5 Furthermore, management module...

10.1021/acsami.1c23309 article EN ACS Applied Materials & Interfaces 2022-01-21

Abstract The sensor devices based on triboelectric nanogenerator (TENG) have been proved to both high sensitivity and good self‐powered capability. Inspired by the cockroach antennae, a bionic‐antennae‐array (BAA) working principle of TENG is proposed for identifying noncontact motions data processing module specially designed outputting electrostatic signal microcontroller unit (MCU). Based amplifying effect antennae array, detected maximum distance this BAA can reach 180 mm with...

10.1002/admt.201900789 article EN Advanced Materials Technologies 2019-11-15

Achieving both high sensitivity and wide detecting range is significant for the applications of triboelectric nanogenerator-based self-powered pressure sensors (TPSs). However, most previous designs with usually struggle in a narrow detection (<30 kPa) while expanding normally sacrifices sensitivity. To overcome this well-known obstacle, herein, piezopotential enhanced effect realized by rationally designed PDMS/ZnO NWs hierarchical wrinkle structure was exploited to develop TPS (PETPS)...

10.1021/acsami.3c16415 article EN ACS Applied Materials & Interfaces 2024-01-11

Abstract Triboelectric nanogenerator (TENG) as an environmental energy recovery and harvesting technology has attracts much attention. However, the improvement of TENG's output performance becomes one core issues. And modification triboelectric materials may be effective approach. Here, two metal–organic framework (MOF) namely TIFSIX‐2‐Cu‐i Cu(Qc) 2 are synthesized, influence different organic ligands on electromechanical conversion TENG is investigated by starting from intrinsic structure...

10.1002/smll.202500357 article EN Small 2025-02-12

Valves are critical components in advanced fluid control systems (AFCS) and play a vital role applications such as soft robotics medical devices. Traditional mechanical valves often suffer from issues leakage wear, which compromise the efficiency precision of air-driven systems. Here, superlubricity microvalve (SLMV) is developed with characteristics zero leakage, ultralong lifespan, self-sensing capabilities. The SLMV demonstrates helium at pressures exceeding 0.9 MPa, remains defect-free...

10.1002/adma.202416132 article EN Advanced Materials 2025-03-10

Abstract Tactile recognition is a critical technology for many applications. Here, it found that the ambient electromagnetic signal, which usually regarded as noise, can be good triggering source to realize tactile detection. A circuit consisting of two light emitting diodes (LEDs) designed sensor unit and human contact amplify electrostatic signal induced by wave in this circuit, enhances brightness LEDs. Hence, visualizing perception achieved based on strategy. Accordingly, stretchable...

10.1002/adfm.201805277 article EN Advanced Functional Materials 2018-10-08
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