Lei Han

ORCID: 0000-0003-3504-5412
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About
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Research Areas
  • Advanced MEMS and NEMS Technologies
  • Acoustic Wave Resonator Technologies
  • Advanced Sensor and Energy Harvesting Materials
  • Photonic and Optical Devices
  • X-ray Diffraction in Crystallography
  • Crystallization and Solubility Studies
  • Microwave Engineering and Waveguides
  • Mechanical and Optical Resonators
  • Advanced Materials and Mechanics
  • Conducting polymers and applications
  • Tactile and Sensory Interactions
  • Advanced Fiber Optic Sensors
  • biodegradable polymer synthesis and properties
  • Heat Transfer and Boiling Studies
  • Polymer crystallization and properties
  • Micro and Nano Robotics
  • Heat Transfer and Optimization
  • Modular Robots and Swarm Intelligence
  • Gas Sensing Nanomaterials and Sensors
  • Radio Frequency Integrated Circuit Design
  • Semiconductor Lasers and Optical Devices
  • Wireless Power Transfer Systems
  • Structural Behavior of Reinforced Concrete
  • Coal Properties and Utilization
  • Metal Forming Simulation Techniques

Southeast University
2016-2025

Ministry of Education
2025

Jiangsu Provincial Center for Disease Control and Prevention
2025

Guizhou University
2025

Xi'an Jiaotong University
2021-2024

Northeast Electric Power University
2014-2024

Henan Polytechnic University
2024

Shanghai Electric (China)
2024

Zhejiang Normal University
2022-2023

Xian Central Hospital
2022

Soft robots based on bionics have attracted extensive attention in recent years. However, most of previous works focused the motion that were incapable communication and perception. In this work, an untethered crawling robot is proposed with integration motion, communication, location entirely a flexible material, which capable being utilized as sensing platform. The hydrophilic graphene oxide film, photothermal conversion, allows to undergo large deformation stimulated by near-infrared...

10.1021/acsami.1c20539 article EN ACS Applied Materials & Interfaces 2022-01-20

Abstract Soft robots based on bionics with multi‐freedom and communication abilities have attracted extensive attention in recent years. However, the solutions for soft multidirectional locomotion currently concentrate complex drive modes exhibit application unfriendliness. In this work, an untethered light‐driven crawling robot is proposed integration of module, which can traverse four directions a fixed near‐infrared (NIR) light source also capable positioning perception. Owing to...

10.1002/adfm.202305046 article EN Advanced Functional Materials 2023-07-07

Abstract: Ultra-high molecular weight polyethylene (UHMWPE)/epoxy composites with excellent adhesive properties were prepared by forming an interface membrane on the UHMWPE fiber surface. The of and epoxy resin was polymerized aldol condensation between polyvinyl alcohol (PVA) glutaraldehyde. Different surface treatment methods fibers optimized two-step PVA-glutaraldehyde (Corona-PG-2S) method is best. interfacial adhesion enhanced, composite improved. X-ray photoelectron spectroscopy (XPS)...

10.3390/polym12030521 article EN Polymers 2020-03-01

Abstract This work proposes a facile and economical hybrid additive manufacturing (HAM)technology combining fused deposition modeling (FDM) 3D printing laser‐activated selective electroless plating (ELP) for fabricating full functional end‐use customized electronics. A acrylonitrile butadiene styrene (ABS) filament doped with dicopper hydroxide phosphate (Cu 2 (OH)PO 4 ) catalysts is developed FDM printing. The printed structure selectively to generate Cu I seeds on the ABS surface then...

10.1002/admt.202300516 article EN Advanced Materials Technologies 2023-08-02

Soft robots based on flexible materials have attracted the attention due to high flexibility and great environmental adaptability. Among common driving modes, electricity, light, magnetism limitations of wiring, poor penetration capability, sophisticated equipment, respectively. Here, an emerging wireless mode is proposed for soft crawling robot power transfer (WPT) technology. The receiving coil at robot's tail, as energy station, receives from transmitting supplies electrothermal...

10.1002/smll.202309661 article EN Small 2024-01-24

Wideband 8-12-GHz inline-type microwave power sensors that are based on measuring the coupled from coplanar waveguide line by a microelectromechanical systems membrane presented. In this method, signal is available during detection. order to obtain low reflection losses and insertion losses, as well wideband response of sensor, an impedance match structure compensating capacitance proposed. The fabrication sensor compatible with GaAs monolithic integrated circuit (MMIC) process. experimental...

10.1109/jmems.2009.2017113 article EN Journal of Microelectromechanical Systems 2009-03-31

Design, fabrication, and measurement results of a lateral dc-contact RF microelectromechanical systems switch for ultrabroadband applications are presented in this letter. The is driven by bidirectional cascaded electrothermal actuator, which can generate larger displacements contact forces at two directions than traditional actuators. Because the proposed not only realize off-state to on-state shifting, but also provide an additional deep off-state. fabricated MetalMUMPs process, show that...

10.1109/led.2013.2269993 article EN IEEE Electron Device Letters 2013-07-09

To study the bond performance of ultra-high concrete (UHPC) and steel bar after freeze-thaw cycles (FTCs), eccentric pull-out test 10 groups reinforced UHPC specimens, compressive 24 cube specimens splitting tensile were carried out. The degradation mechanical properties FTCs studied. influence strength, cover thickness, length on strength was analyzed. relationship between is established by using average as indexes. A formula for calculating developed. results show that elastic modulus...

10.1016/j.cscm.2024.e03401 article EN cc-by-nc Case Studies in Construction Materials 2024-06-12

Abstract Based on the Penn's experimental data, a consistently compressible Mooney‐Rivlin model is developed for vulcanized rubber. First, data are re‐analyzed, which show near incompressibility. Next, incompressible and three conventional types of studied rubber, exhibit an apparent inconsistence with due to dissimilar initial shear modulus. Finally, extra constants proposed, obeys normalization conditions consistent conditions, procedure identify suggested, then applied data. The Mooney...

10.1002/pen.25757 article EN Polymer Engineering and Science 2021-07-19

An integrated decouplable temperature and humidity dual-parameter triboelectric sensor is proposed, which contains a nanogenerator responding to an inserted conductive polyethylene film temperature.

10.1039/d4tc01087f article EN Journal of Materials Chemistry C 2024-01-01

As one of the core parts Internet-of-things (IOTs), multimodal sensors have exhibited great advantages in fields such as human-machine interaction, electronic skin, and environmental monitoring. However, current substantially introduce a bloated equipment architecture complicated decoupling mechanism. In this work we propose fusion sensing platform based on power-dependent piecewise linear mechanism, allowing four parameters to be perceived decoded from passive wireless single component,...

10.1021/acsami.4c17280 article EN ACS Applied Materials & Interfaces 2025-01-03

10.1016/j.saa.2025.125852 article EN Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy 2025-02-01

10.1109/jmems.2025.3553118 article EN Journal of Microelectromechanical Systems 2025-01-01
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