Zhen Li

ORCID: 0009-0007-0739-7572
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About
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Research Areas
  • Energy Harvesting in Wireless Networks
  • Innovative Energy Harvesting Technologies
  • Advanced Sensor and Energy Harvesting Materials
  • Engineering and Materials Science Studies
  • Wireless Power Transfer Systems
  • Analog and Mixed-Signal Circuit Design
  • Thermal Analysis in Power Transmission
  • Environmental Impact and Sustainability
  • Catalytic C–H Functionalization Methods
  • Catalytic Alkyne Reactions
  • Building Energy and Comfort Optimization
  • GaN-based semiconductor devices and materials
  • Engineering and Technology Innovations
  • Water Quality Monitoring Technologies
  • Structural Analysis of Composite Materials
  • Underwater Vehicles and Communication Systems
  • Digital Transformation in Industry
  • CCD and CMOS Imaging Sensors
  • Cellular Mechanics and Interactions
  • Heat Transfer and Optimization
  • Hydrogels: synthesis, properties, applications
  • Sustainable Industrial Ecology
  • Tribology and Lubrication Engineering
  • Semiconductor Quantum Structures and Devices
  • Radio Frequency Integrated Circuit Design

Fudan University
2011-2024

Shanghai Fudan Microelectronics (China)
2023

China Agricultural University
2023

Tsinghua University
2010

Folded single chain polymeric nano-objects are the molecular level soft material with ultra-small size. Here, we report an easy and scalable method for preparing single-chain nanogels (SCNGs) improved efficiency. We further investigate impact of dynamic conformational change SCNGs on cellular interactions from to bulk scale. First, supramolecular unfoldable efficiently deliver siRNAs into stem cells as a drug carrier in conformation-dependent manner. Furthermore, conformation changes enable...

10.1038/s41467-019-10640-z article EN cc-by Nature Communications 2019-06-20

This brief presents a tutorial on topologies of piezoelectric energy harvesting circuits. The latest design technologies are systematically summarized. classified according to the storage devices and input excitation. working principles strategies different compared analyzed. Considerations such as topology generation, loss analysis optimization, system volume efficiency also discussed.

10.1109/tcsii.2022.3173966 article EN IEEE Transactions on Circuits & Systems II Express Briefs 2022-05-10

This article proposes a novel eight-phase self-bias-flip piezoelectric energy harvesting interface with charge recycling and reusing (SBFRR) switched-piezoelectric harvester (PEH) dc–dc (SPDC) converter. The proposed scheme innovatively utilizes the inherent capacitors ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$C_P$</tex-math> </inline-formula> ) of four PEHs as sources, flying capacitors, flipping...

10.1109/jssc.2023.3341865 article EN IEEE Journal of Solid-State Circuits 2023-12-19

This article presents a piezoelectric energy harvesting (PEH) interface circuit using new self-bias-flip with the charge recycle (SBFR) technique without employing any additional reservoir. Traditional designs, including synchronous-switch on inductor (SSHI), capacitor (SSHC), synchronous electric extraction (SECE), etc., require capacitors or inductors to reverse voltage PEH at zero-crossing point. design innovatively uses inherent of harvesters as flipping capacitors. In order improve...

10.1109/tpel.2023.3286399 article EN IEEE Transactions on Power Electronics 2023-06-15

With the advent of lnternet-of-Things (1oT) era, sensor nodes are required in almost all fields to achieve a better interaction between humans and environment. Piezoelectric energy harvester (PEH), which exhibits an equivalent electrical model AC current source /P parallel with inherent capacitor C <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">P</inf> , is promising technology resolve problem such nodes. Recently, inductor-based rectifiers,...

10.1109/cicc57935.2023.10121219 article EN 2022 IEEE Custom Integrated Circuits Conference (CICC) 2023-04-01

As an integrated supply system combining multiple forms of energy, the regional multi-energy can realize functions mutual aid and efficient consumption renewable energy. It is expected to become important energy solution help achieve strategic goals carbon peaking neutrality. Existing distribution network analysis methods tools are difficult apply directly systems. This paper systematically combines digital twin technology with planning operation Based on core twins technologies such as...

10.1117/12.2680880 article EN 2023-05-23

Moderne Behälter werden oft als ringversteifte Kreiszylinderschalen ausgeführt. Der traglaststeigernde Effekt eng liegender Ringsteifen unter Axialdruck erfuhr in der Forschung bis heute nur geringe Beachtung. Er ist bisher ungeregelt und infolge unnötig hohen Materialeinsatzes bleiben Stahlbehältern Marktanteile bessere Nachhaltigkeit verwehrt. Anhand von Versuchen einer numerischen Studie die neuesten Forschungsergebnisse des Einflusses auf das Axialbeulverhalten erläutert. Die Ergebnisse...

10.37544/0005-6650-2022-01-02-70 article DE Bauingenieur 2022-01-01

This paper proposes a metastability detection and escape acceleration (MDEA) technique to enhance the bandwidth lower switching power of successive-approximation register (SAR) analog-to-digital converters (ADCs). It is implemented as an AC-coupling switched-capacitor latch (ACC-SCL) applied 8-bit 4-channel time-interleaved SAR ADC, whose layout synthesized automatically. The ADC has been fabricated in 28-nm CMOS process, measurement results show that it achieves 1.6 GS/s, 42.6-dB...

10.1109/tcsii.2023.3335987 article EN IEEE Transactions on Circuits & Systems II Express Briefs 2023-11-23
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