Search Results - Jiachen Li
-
1
Reconfigurable Rectangular Filter With Continuously Tunable Bandwidth and Wavelength
Published 2020-01-01Get full textWe propose and demonstrate a rectangular optical lattice filter with reconfigurable bandwidth and wavelength. The proposed reconfigurable rectangular lattice filter consists of three-stage cascaded ring-assisted Mach-Zehnder interferometers (RAMZIs), and each RAMZI unit serves as an approximate opti...
Article -
2
Low-Loss Waveguide Crossing for Complicated On-Chip Microwave Photonic Processor
Published 2024-01-01Get full textTo realize large device density and high complexity in future on-chip microwave photonic system, a waveguide crossing with low loss, crosstalk and reflection is designed on the silicon nitride waveguide platform, which is compatible for on-chip microwave photonic processor. Furthermore, a multi-chan...
Article -
3
Reconfigurable RF Filter Based on Cascaded Microring Resonators
Published 2023-01-01Get full textTo meet the requirement of radio frequency signal processing tasks among various frequency bands, here we have demonstrated a reconfigurable microwave photonic bandpass filter by flipping the optical notch spectrum of a cascaded microring resonator (MRR) filter pool chip through phase modulation. We...
Article -
4
Simultaneously achieving high-κ and strong ferroelectricity in Hf0.5Zr0.5O2 thin film by structural stacking design
Published 2025-09-01Get full textThe superior dielectric and ferroelectric properties of HfO2-based thin films, coupled with excellent silicon compatibility, position them as highly attractive candidates for dynamic and ferroelectric random-access memories (DRAM and FeRAM). However, simultaneously achieving high dielectric constant...
Article -
5
A New Phase Unwrapping Method for Disconnected Regions Inspired by Continental Drift Theory
Published 2025-01-01Get full textPhase unwrapping (PU) is a crucial step in interferometric synthetic aperture radar, as it directly influences the accuracy of surface deformation monitoring and topographic mapping. However, PU in disconnected regions due to surrounding low-coherence pixels and irregular terrain like islands remain...
Article -
6
Twin Toughening‐Driven Martensitic Transformation Strategy Synergistic Improvement for Plasticity‐Thermal Shock Resistance of (Hf─Zr─Ti)C Ceramic Coating in Severe Thermal Environm...
Published 2025-07-01Get full textAbstract The inherent brittleness and insufficient thermal shock resistance of ultra‐high temperature ceramic (UHTC) in severe thermal environments (above 2000 °C) remain significant challenges. This characteristic notably shortens their operational lifespan as thermal protective coatings on structu...
Article -
7
SLAMF7 regulates goblet cell mucus production and negatively impacts gut homeostasis and commensalism
Published 2025-12-01Get full textCrosstalk between the intestinal mucosal barrier and the gut microbiota contributes to maintaining intestinal homeostasis. Accumulating evidence suggests that diverse mechanisms are involved in maintaining intestinal homeostasis. Any disturbance in these pathways can compromise gut homeostasis and t...
Article