A5069730550- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Advanced Battery Materials and Technologies
- Advanced Sensor and Energy Harvesting Materials
- Solar-Powered Water Purification Methods
- 2D Materials and Applications
- Gas Sensing Nanomaterials and Sensors
- Advanced Memory and Neural Computing
- Nanomaterials and Printing Technologies
- Energy Harvesting in Wireless Networks
- Semiconductor materials and interfaces
- Laser Material Processing Techniques
- Neuroscience and Neural Engineering
- Spacecraft Design and Technology
- Fuel Cells and Related Materials
- Nanowire Synthesis and Applications
- Advanced Chemical Sensor Technologies
- Plasmonic and Surface Plasmon Research
- Thermal Radiation and Cooling Technologies
- Fluid Dynamics and Heat Transfer
- Neural dynamics and brain function
- Ga2O3 and related materials
- Supercapacitor Materials and Fabrication
- Semiconductor materials and devices
- Graphene research and applications
Shanghai Jiao Tong University
2022-2025
University of Waterloo
2018-2024
Center for Translational Molecular Medicine
2024
Tsinghua University
2015-2020
State Key Laboratory of Tribology
2015-2020
Regional Municipality of Waterloo
2018
Institute of Microelectronics
2015
California Institute of Technology
1988-2003
University of Electro-Communications
2003
Jet Propulsion Laboratory
1981-2002
Most state-of-the-art electronic wearable sensors are powered by batteries that require regular charging and eventual replacement, which would cause environmental issues complex management problems. Here, a device concept is reported can break this paradigm in ambient moisture monitoring-a new class of simple themselves generate moisture-dependent voltage be used to determine the humidity level directly. It demonstrated moisture-driven electrical generator, based on diffusive flow water...
Most advanced humidity sensors are powered by batteries that need regular charging and replacement, causing environmental problems complicated management issues. This paradigm has been overcome through the development of new technology based on concept simple, self-powered, rapid-response, flexible enabled properties densely packed titanium dioxide (TiO2) nanowire networks. These eliminate for an external power source produce output voltage can be readily related to ambient level over a wide...
Miniaturization of energy storage devices can significantly decrease the overall size electronic systems. However, this miniaturization is limited by reduction electrode dimensions and reproducible transfer small electrolyte drops. This paper reports first a simple scalable direct writing method for production ultraminiature microsupercapacitor (MSC) electrodes, based on femtosecond laser reduced graphene oxide (fsrGO) interlaced pads. These pads, separated 2 μm spacing, are 100 long 8 wide....
Harvesting energy from the environment offers many opportunities for generation of clean power self‐sustained systems and provides great promise ameliorating growing threat global environmental issues crisis. Ambient moisture natural water sources have attracted huge research interest in field harvesting conversion due to easy access, good sustainability, ubiquity on Earth. Taking advantage active interaction between molecules solid interfaces, various functional materials been demonstrated...
Abstract Electronic devices that can simulate the dynamics of neurotransmission in human body are great interest for development artificial intelligence modern information technology. An nociceptor realized by a single metal‐oxide nanobelt device with unique capacitive‐coupled threshold switching behavior is demonstrated. Via thermal admittance spectroscopy and temperature‐dependent sweeping study, properties determined Schottky emission at low bias defect‐assisted quantum tunneling high...
With the flexibilization tendency of traditional electronics, developing sensing devices for low-temperature field is demanding. Here, we fabricated a flexible copper-based thermistor by laser direct writing process with Cu ion precursors. The performs excellent temperature ability and high stability under different environments. We discussed effect power on sensitivity thermistor, explained mechanism as-written films, sensor array realizing management in specific zone. All investigations...
Due to the increasing complexity in miniaturization of electronic devices, reconfigurable field-effect transistors (RFETs) have emerged as a solution. Although foundational concepts RFETs matured over two decades, ongoing breakthroughs are needed address challenges such improving device performance well achieving balanced symmetry between n-type and p-type transport modes with long-term stability. Herein, we present nonvolatile WSe2-based RFET that utilizes photoassisted interfacial charge...
A single photodetector with tunable detection wavelengths and polarization sensitivity can potentially be harnessed for diverse optical applications ranging from imaging sensing to telecommunications. Such a device will require the combination of multiple material systems different structures, band gaps, photoelectrical responses, which is extremely difficult engineer using traditional epitaxial films. Here, we develop multifunctional high-performance photosensor all van der Waals materials....
Memristors, or memristive devices, have gained substantial attention as valuable building blocks for neuromorphic computing systems. Their dynamic reconfiguration enables simulation of essential analog synaptic and neuronal functionalities, making them promising candidates brain-inspired neural network computing. In recent years, conventional thin film materials low-dimensional nanomaterials been extensively explored in devices the development applications. Despite progress several technical...
The two‐terminal alternating current impedance of lithium‐titanium disulfide rechargeable cells has been studied as a function frequency, state‐of‐charge, and extended cycling. Analysis based on plausible equivalent circuit model for the cell leads to evaluation kinetic parameters various physicochemical processes occurring at electrode/electrolyte interfaces. To investigate causes degradation during cycling, evaluated cycled five times have compared with that over 600 times. findings are...
Decreasing the interconnecting temperature is essential for 3D and heterogeneous device integrations, which play indispensable roles in coming era of "more than Moore". Although nanomaterials exhibit a decreased onset interconnecting, such an effect always deeply impaired because organic additives practical integrations. Meanwhile, current organic-free integration strategies suffer from roughness contaminants at bonding interface. Herein, novel bilayer nanoarchitecture simultaneously...
Abstract The analysis of exhaled breath is an increasingly important role in the provision security and management personal healthcare. development self‐powered, reliable, miniature low cost noninvasive devices fundamental to practical applications. However, most state‐of‐the‐art self‐powered systems are incorporating mechanical nanogenerators, which would promote contact failures electronics limit minimization monitoring system. This work outlines a new solution this problem based on...
Harvesting energy from ambient moisture and natural water sources is currently of great interest due to the need for standalone self-powered nano/micro-systems. In this work, we report on development a cost-effective nanogenerator based carbon paper-Al2O3 nanoparticle layer-carbon paper (CAC) sandwich structure, where 3D Al2O3 layer deposited via vacuum filtration. This type device can produce an open-circuit voltage (UOC) up 4 V short-circuit current (ISC) ∼18 μA with only 8 μL droplet...
A device based on single titanate nanobelts, intermediate products of hydrothermally-synthesized TiO<sub>2</sub>nanobelts, demonstrated promising synaptic functions for neuromorphic computing applications.
We report the development of low-cost triboelectric nanogenerators (TENGs) based on polypropylene (PP) fabrics formulated via an inexpensive melt-blowing process with output voltage as high 50 V. By disinfection methods such exposure to steam, ethanol, and dry heat at 75 °C, commercial medical masks N95 filtering facepiece respirators (FFRs) can be reused fabricate PP fiber TENGs, which provide a novel regime for energy-harvesting devices reusable materials. As power source, one TENG drive...
Smart breath monitor devices with high stretchability, fast response/recovery times and self-powered characteristic are essential in the wearable medical life science applications. In this work, we report on development of a versatile high-performance humidity sensor based TiO2 nanowire networks for sensing application human monitoring. These sensors, typical response ∼3.6 s recovery ∼14 s, exhibit sensitivity to water vapor can yield an output voltage that is directly proportional level...
This study reports the concept of a water/moisture-induced hygroelectric generator based on direct contact between magnesium (Mg) alloy and oxidized carbon nanofibers (CNFs). device generates an open-circuit voltage up to 2.65 V within only 10 ms when unit is placed in with liquid water, which higher than reduction potential magnesium. The average peak short-circuit current density ∼6 mA/cm2, among highest values yet reported for water-induced electricity generators. Our results indicate...
2D materials exhibit intriguing electrical and optical properties, making them promising candidates for next-generation nanoelectronic devices. However, the high contact resistance of to electrode material often limits ultimate performance potential In this work, we demonstrate a localized femtosecond (fs) laser irradiation process substantially minimize MoS2–metal contacts. A reduction exceeding three orders magnitude is achieved mechanically exfoliated MoS2, which remarkably improves...
The integration of 2D materials with other dimensional opens up rich possibilities for both fundamental physics and exotic nanodevices. However, current mixed-dimensional heterostructures often suffer from interfacial contact issues environment-induced degradation, which severely limits their performance in electronics/optoelectronics. Herein, we demonstrate a novel BN-encapsulated CuO/MoS2 2D-1D van der Waals heterostructure photodetector an ultrahigh photoresponsivity is 10-fold higher...
Abstract With the increase in use of electronic devices many different environments, a need has arisen for an easily implemented method rapid, sensitive detection liquids vicinity components. In this work, high-performance power generator that combines carbon nanoparticles and TiO 2 nanowires been fabricated by sequential electrophoretic deposition (EPD). The open-circuit voltage short-circuit current single are found to exceed 0.7 V 100 μA when 6 μL water was applied. is also have stable...
The ability to perform broadband optical spectroscopy with subdiffraction-limit resolution is highly sought-after for a wide range of critical applications. However, sophisticated near-field techniques are currently required achieve this goal. We bypass challenge by demonstrating an extremely photodetector based on two-dimensional (2D) van der Waals heterostructure that sensitive light across over decade in energy from the mid-infrared (MIR) deep-ultraviolet (DUV) at room temperature....