A5058661530- Photonic and Optical Devices
- Optical Network Technologies
- Advanced Photonic Communication Systems
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Organometallic Complex Synthesis and Catalysis
- Semiconductor Lasers and Optical Devices
- Neural Networks and Reservoir Computing
- Asymmetric Hydrogenation and Catalysis
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Carbon dioxide utilization in catalysis
- Rice Cultivation and Yield Improvement
- Catalytic C–H Functionalization Methods
- Synthetic Organic Chemistry Methods
- Advanced Fiber Optic Sensors
- Clay minerals and soil interactions
- Geophysical Methods and Applications
- Antenna Design and Optimization
- Boron Compounds in Chemistry
- Catalytic Alkyne Reactions
- Soybean genetics and cultivation
- Steroid Chemistry and Biochemistry
- Semiconductor Quantum Structures and Devices
- COVID-19 and healthcare impacts
- Plant Micronutrient Interactions and Effects
Beijing National Laboratory for Molecular Sciences
2020-2024
Chinese Academy of Sciences
2020-2024
Intel (United States)
2018-2024
Institute of Chemistry
2020-2024
Taizhou Central Hospital
2024
Taizhou University
2024
Institut de Chimie Moléculaire et des Matériaux d'Orsay
2024
Centre National de la Recherche Scientifique
2024
Université Paris-Saclay
2024
Mission College
2019-2023
Silicon (Si) photonics research and development started more than 30 years ago has intensified in the last 15 as levels of device functionality, photonic integration, commercialization have all increased [1]. The key drivers for using Si arise from quality wafers superior processing capabilities developed funded by microelectronics industry. It promise to revolutionize industry same way that CMOS design revolutionized industry, driving down chip cost while enabling higher integration...
A straightforward two-step synthesis of a new family electronically distinct para-biphenylene-linked 1,2-bis(imino)acenaphthene/pyridyl-2-imine (BIAN-PI) ligands, 2′-CMeN{1-[2,6-(Ph2CH)2-4-R-C6H2N]-2-[3,3′,5,5′-iPr4-1,1′-(C6H2)2-4-N]C2C10H6}C5H4N (R = Me L1′, iPr L2′, tBu L3′, OMe L4′, OCF3 L5′, Cl L6′, F L7′, NO2 L8′), is disclosed. Their reaction with two equivalents NiBr2(DME) results in occupation the inequivalent N,N′ pockets within BIAN-PI framework to afford binuclear nickel(II)...
We review advancements in silicon photonic (SiPh) devices and integrated circuits (SiPICs) to enable high density, low power, multi-Tb/s optical solutions for next-generation Ethernet networking compute connectivity.
Abstract Purpose To identify the key infection processes and risk factors in Computed Tomography (CT) examination process within standard prevention control measures for COVID-19 epidemic, aiming to mitigate cross-infection occurrences hospital. Method The case hospital has assembled a team of 30 experts specialized CT examination. Based on process, potential failure modes were assessed from perspective severity ( S ), occurrence probability O detectability D ); they then combined with...
A 400Gbps PAM-4 fully integrated DR4 silicon photonics transmitter with four heterogeneously DFB lasers has been demonstrated for data center applications over a temperature range of 0~70°C and reach up to 2km
This study addresses the challenges associated with vinyl cation generation, a process that traditionally requires quite specific counterions. Described herein is novel intramolecular vinylation of arenes catalyzed by aluminum(III) chloride, utilizing practical conditions and readily available triflates derived from 2-aceto-3-arylpropionates. Comprehensive experimental data support diverse carbocycle synthesis, exemplified indenes higher analogues. Control experiments verify applicability...
A 100Gbps CWDM4 silicon photonics transmitter with four heterogeneously integrated distributed feedback lasers on 20 nm wavelength grids has been demonstrated for 5G wireless front-haul applications over a temperature range of −20°C to 95°C.
A series of iminopyridyl ligand-based iron and cobalt complexes are utilized as catalysts in isoprene polymerization, which the microstructure resultant polyisoprenes was investigated.
We demonstrate an 8-channel 400G CWDM silicon photonics transmitter leveraging Intel's highly integrated wafer-scale manufacturing platform. The consists of lasers, high-bandwidth carrier-depletion modulators, and a passive wavelength multiplexer on single chip.
In the present work, four new mono(imino)pyridine ligands, 2-((2,4-bis(bis(4-R-phenyl)methyl)-6-fluorophenylimino)methyl)pyridine (R = H, L1; R OCH3, L2; F, L3) and 2-((2-(bis(4-fluorophenyl)methyl)-4-((3-(bis(4-fluorophenyl)methyl)-4-amine-5-fluoro-phenyl)(phenyl)methyl)-6-fluorophenylimino)methyl)pyridine (L4), have been designed in good yields. Additionally, three novel benzhydryl-bridged bis(imino)pyridine 2-(2-(bis(4-R-phenyl)methyl)-6-fluoro-phenylimino)pyridine L5; L6; L7), were also...
A series of 6-arylimino-2-(2-(1-phenylethyl)naphthalen-1-yl)iminopyridines and their iron(II) cobalt(II) complexes (Fe1–Fe5, Co1–Co5) were synthesized routinely characterized as Co3 Co5 complexes, studied by single crystal X-ray crystallography, which individually displayed a distorted square pyramidal or trigonal bipyramid around cobalt center. Upon treatment with either methyluminoxane (MAO) modified (MMAO), all high activities regarding ethylene polymerization even at an elevated...
Zeolite is an abundant potassium (K)-rich silicate mineral that could increase K supply to plants. Potassium deficiency causes lodging problems and yield reductions in paddy fields China. However, it unknown whether zeolite amendments alleviate or enhance lodging-related stem morphology characteristics rice. A 2-year field experiment was conducted evaluate the effect of amendment (0, 5 10 t ha–1) application 30 60 kg on rice grain yield, morphology, nutrient status soil plant tissues. In...
A photonic integrated 2 × WDM cross-connect switch which provides full access to eight wavelength channels has been designed and fabricated in silica on silicon substrate. The consists of two novel N phased-array waveguide gratings are connected by a thermo-optic array with no crossing. crosstalk for the cross bar states is better than –20 –15 dB, respectively, fibre-to-fibre insertion loss <13 dB.
Abstract A series of nickel complexes bearing N , ‐bidentate ligands has been synthesized and characterized by elemental analysis infrared (IR) spectroscopy. High ethylene dimerization activity, reaching 2.43 × 10 6 g mol −1 (Ni)h was achieved using these as precatalysts activated with Me 2 AlCl. Moreover, the selectivity to obtain α‐C4 high (93%–96%). Comparing previous report our group, higher activity may be attributed substituent at 2‐position within ligand, creating steric hindrance...
A novel multi/demultiplexer with dual-channel-spacing operation has been demonstrated for the first time, by utilizing asymmetric I/O-port feature of a phased-array waveguide grating device. The operates at both constant-wavelength (2 nm) and constant-frequency (200 GHz) channel-spacing standards. center wavelength/frequency is adaptive to processing variations can be alterable in unit 0.4 nm 50 GHz, respectively. device exhibits low fiber-to-fiber insertion loss 4.8-5.2 dB crosstalk...
We report on our efforts to integrate silica and polymer waveguide devices, such as arrayed gratings (AWG's), tunable lenses, optical switches, variable attenuators (VOA's), power taps. In particular, the realizations of various add/drop multiplexers dispersion compensators are discussed. The integration techniques, design architectures corresponding performances presented.
We demonstrate a high-efficiency PAM4 silicon photonics transmitter optimized through end-to-end system modeling for applications up to 10km on four-channel CWDM4 grid. Our measurements show close agreement with simulations meeting 400G-FR4 requirements 1.7Vppd.
Multiple application segments from data transmission to sensing drive the demand for high-performance photonic integrated circuits. We review advancements in silicon photonics manufacturing platform datacom and multi-Tb/s optical interconnects.
Etch-mask thin-film material that is particulate-free and topographically smooth has been created from a standard photoresist spun onto semiconductor substrates such as gallium arsenide, indium phosphide, silicon, then pyrolyzed by exposing to temperature of 300 °C in air atmosphere for 1 min on laboratory hot-plate. The resulting pyrolytic-photoresist chemically inert many organic solvents including the solvent itself inorganic reagents used processing. Therefore can be patterned sulfur...
Abstract Six examples of N,N,N ‐chelated iron(II) chloride complex, [2,3 : 5,6‐{C 4 H 8 C(NAr)} 2 C 5 3 N]FeCl (Ar=1‐C 10 7 Fe1 , 2‐Me‐1‐C 6 Fe2 2‐(CHMePh)‐1‐C Fe3 2‐Cl‐1‐C Fe4 4‐Br‐1‐C Fe5 4‐NO ‐1‐C Fe6 ), differing in the steric/electronic properties substituents appended to N ‐naphthalen‐1‐yl groups, have been synthesized reasonable yield via a facile one‐pot route. The molecular structure five‐coordinate emphasizes steric hindrance imposed on iron center by CHMePh‐substituted bicyclic...
Based on the principle of equivalent sampling, a low-cost ultra-wideband ground penetrating radar (GPR) receiving circuit is proposed in this paper. The mainly composed three parts: high-precision delay control circuit, sampling pulse generating and circuit. Step-Recovary Diode(SRD) avalanche transistor are used to generate signal, step recovery diode as front sharpening drive transistor. As result, signal with bottom width about 430 ps an amplitude up 1.5 V generated. RF transistors obtain...