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Optoelectronic Synapses Based on MXene/Violet Phosphorus van der waals Heterojunctions for Visual‑Olfactory Crossmodal Perception

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nano-Micro Letters 2024年第6期16卷 38-52页

作者： Hailong Ma Huajing Fang Xinxing Xie Yanming Liu He Tian Yang chai Center for Advancing Materials Performance From the nanoscale(CAMP‑nano) State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong UniversityXi’an 710049People’s Republic of China Institute of Microelectronics and Beijing national Research Center for Information Science and Technology(BnRist) Tsinghua UniversityBeijing 100084People’s Republic of China Department of Applied Physics The Hong Kong Polytechnic UniversityHong KongPeople’s Republic of China

The crossmodal interaction of different senses,which is an important basis for learning and memory in the human brain,is highly desired to be mimicked at the device level for developing neuromorphic crossmodal perception,but related researches are ***,we demonstrate an optoelectronic synapse for vision-olfactory crossmodal perception based on MXene/violet phosphorus(VP)van der waals *** from the efficient separation and transport of photogenerated carriers facilitated by conductive MXene,the photoelectric responsivity of VP is dramatically enhanced by 7 orders of magnitude,reaching up to 7.7 A w^(−1).Excited by ultraviolet light,multiple synaptic functions,including excitatory postsynaptic currents,pairedpulse facilitation,short/long-term plasticity and“learning-experience”behavior,were demonstrated with a low power ***,the proposed optoelectronic synapse exhibits distinct synaptic behaviors in different gas environments,enabling it to simulate the interaction of visual and olfactory information for crossmodal *** work demonstrates the great potential of VP in optoelectronics and provides a promising platform for applications such as virtual reality and neurorobotics.

关键词： Violet phosphorus MXene Van der waals heterojunctions Optoelectronic synapses Crossmodal perception

Grain yield and n uptake of maize in response to increased plant density under reduced water and nitrogen supply conditions

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Journal of Integrative Agriculture 2024年第1期23卷 122-140页

作者： Jingui wei Qiang chai wen Yin Hong Fan Yao Guo Falong Hu Zhilong Fan Qimingwang State Key Laboratory of Aridland Crop Science Lanzhou 730070China College of Agronomy Gansu Agricultural UniversityLanzhou 730070China College of Life Sciences Northwest Normal UniversityLanzhou 730070China

The development of modern agriculture requires the reduction of water and chemical n fertilizer *** the planting density can maintain higher yields,but also consumes more of these restrictive ***,whether an increased maize density can compensate for the negative effects of reduced water and n supply on grain yield and n uptake in the arid irrigated areas remains *** study is part of a long-term positioning trial that started in 2016.A split-split plot field experiment of maize was implemented in the arid irrigated area of northwestern China in 2020 to *** treatments included two irrigation levels:local conventional irrigation reduced by 20%(w1,3,240 m^(3)ha^(-1))and local conventional irrigation(w2,4,050 m^(3)ha^(-1));two n application rates:local conventional n reduced by 25%(n1,270 kg ha^(-1))and local conventional n(360 kg ha^(-1));and three planting densities:local conventional density(D1,75,000 plants ha^(-1)),density increased by 30%(D2,97,500 plants ha-1),and density increased by 60%(D3,120,000 plants ha^(-1)).Our results showed that the grain yield and aboveground n accumulation of maize were lower under the reduced water and n inputs,but increasing the maize density by 30% can compensate for the reductions of grain yield and aboveground n accumulation caused by the reduced water and n *** water was reduced while the n application rate remained unchanged,increasing the planting density by 30% enhanced grain yield by 13.9% and aboveground n accumulation by 15.3%.Under reduced water and n inputs,increasing the maize density by 30% enhanced n uptake efficiency and n partial factor productivity,and it also compensated for the n harvest index and n metabolic related enzyme *** with w2n2D1,the n uptake efficiency and n partial factor productivity increased by 28.6 and 17.6%under w1n1D2.w1n2D2 had 8.4% higher n uptake efficiency and 13.9% higher n partial factor productivity than w2n2D1.w1n2D2 improv

关键词： water and n reduction plant density maize grain yield n uptake compensation effect

Reconfigurable logic and in-sensor encryption operations in an asymmetrically tunable van der waals heterostructure

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nano Research 2024年第4期17卷 3113-3119页

作者： Fan Gong wenjie Deng Yi wu Fengming Liu Yihao Guo Zelin Che Jingjie Li Jingzhen Li Yang chai Yongzhe Zhang Key Laboratory of Optoelectronics Technology of Education Ministry of China Faculty of Information TechnologyBeijing University of TechnologyBeijing 100124China Key Laboratory of Advanced Functional Materials Ministry of EducationFaculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China Department of Applied Physics Hong Kong Polytechnic UniversityKowloonHong KongChina

Reconfigurable devices can be used to achieve multiple logic operation and intelligent optical sensing with low power consumption,which is promising candidates for new generation electronic and optoelectronic integrated ***,the versatility is still limited and need to be extended by the device architectures ***,we report an asymmetrically gate two-dimensional(2D)van der waals heterostructure with hybrid dielectric layer SiO_(2)/hexagonal boron nitride(h-Bn),which enable rich function including reconfigurable logic operation and in-sensor information encryption enabled by both volatile and non-volatile optoelectrical *** the partial gate is grounded,the non-volatile light assisted electrostatic doping endowed partially reconfigurable doping between n-type and p-type,which allow the switching of logic XOR and not implication(nIMP).when the global gate is grounded,additionally taking the optical signal as another input signal,logic AnD and OR is realized by combined regulation of the light and localized gate *** on the high on/off current ratio approaching 105 and reliable&switchable logic gate,in-sensor information encryption and decryption is demonstrated by manipulating the logic ***,these results provide strong extension for current reconfigurable electronic and optoelectronic devices.

关键词： in-sensor encryption reconfigurable logic van der waals heterostructure asymmetrical tunable architecture

Size-controlled synthesis and near-infrared photothermal response of Cp^(*)Rh-based metalla[2]catenanes and rectangular metallamacrocycles

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Chinese Chemical Letters 2024年第6期35卷 337-343页

作者： Ying Zhao Yin-Hang chai Tian Chen Jie Zheng Ting-Ting Li Francisco Aznarez Li-Long Dang Lu-Fang Ma College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous MaterialsLuoyang Normal UniversityLuoyang 471934China College of Chemistry Zhengzhou UniversityZhengzhou 450001China Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials State Key Laboratory of Molecular Engineering of PolymersDepartment of ChemistryFudan UniversityShanghai 200438China

A variety of research reports on novel supramolecular topologies have been published over the last ***,it is still a great challenge to tap into the inner functional properties of these ***,two tetranuclear metallamacrocycles 1 and 2 and four octonuclear[2]catenanes 3-6 were constructed successfully via a coordination-driven self-assembly strategy,by conscious design and use of the tetramethyl bidentate pyridine ligand L1,and the appropriate selection of six binuclear half-sandwich rhodium building units with different longitudinal *** complexes have been fully characterized by single crystal X-ray diffraction analysis and nMR ***,near-infrared photothermal studies of the obtained[2]catenanes reveal different photothermal response in solid and solution states,which may be attributed to a strong fluorescence quenching effect of the half-sandwich organometallic fragment and different conjugated effect of Cp^(*)Rh based building blocks in the interlocking *** photothermal conversion efficiencies of[2]catenanes 4-6 fall in the range 30.5%-16.5% *** contribution aims to play a key role in the experimental development of Cp^(*)-based photothermal materials.

关键词： Catenanes Photothermal materials Supramolecular topologies Half-sandwich fragment 3,3'-n-donor analogues

Legume green manure can intensify the function of chemical nitrogen fertilizer substitution via increasing nitrogen supply and uptake of wheat

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The Crop Journal 2024年第4期12卷 1222-1232页

作者： Jingui wei Zhilong Fan Falong Hu Shoufa Mao Fang Yin Qiming wang Qiang chai wen Yin State Key Laboratory of Arid Land Crop Science Lanzhou 730070GansuChina College of Agronomy Gansu Agricultural UniversityLanzhou 730070GansuChina

Achieving the green development of agriculture requires the reduction of chemical nitrogen(n)fertilizer *** studies have confirmed that returning green manure to the field is an effective measure to improve crop yields while substituting partial chemical n ***,it remains unclear how to further intensify the substituting function of green manure and elucidate its underlying agronomic *** a split-plot field experiment in spring wheat,different green manures returned to the field under reduced chemical n supply was established in an oasis area since 2018,in order to investigate the effect of green manure and reduced n on grain yield,n uptake,n use efficiency(nUE),n nutrition index,soil organic matter,and soil n of wheat in *** results showed that mixed sown common vetch and hairy vetch can substitute 40%of chemical n fertilizer without reducing grain yield or n ***,mixed sown common vetch and hairy vetch under reduced n by 20%showed the highest n agronomy efficiency and recovery efficiency,which were 92.0%and 46.0%higher than fallow after wheat harvest and conventional n application rate,*** increase in nUE of wheat was mainly attributed to mixed sown common vetch and hairy vetch,which increased n transportation quantity and transportation rate at pre-anthesis,enhanced n harvest index,optimized n nutrition index,and increased activities of nitrate reductase and glutamine synthetase of leaf,***,mixed sown common vetch and hairy vetch under reduced n by 20%improved soil organic matter and n ***,mixed sown common vetch and hairy vetch can substitute 40%of chemical n fertilizer while maintaining grain yield and n accumulation,and it combined with reduced chemical n by 20%or 40%improved nUE of wheat via enhancing n supply and uptake.

关键词： Legume green manure Reduced n input wheat n uptake and supply Agronomic mechanism

YTE-17 inhibits colonic carcinogenesis by resetting antitumor immune response via wnt5a/JnK mediated metabolic signaling

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Journal of Pharmaceutical Analysis 2024年第4期14卷 525-541页

作者： Hua Sui wanli Deng Qiong chai Bing Han Yuli Zhang Zhenzhen wei Zan Li Ting wang Jiling Feng Man Yuan Qingfeng Tang Hongxi Xu Medical Experiment Center Jiading Branch of Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai201803China Translational Medicine Research Center for Cancer Prevention and Treatment Shanghai General Hospital Jiading Branch-School of Pharmacy of Shanghai University of Traditional Chinese Medicine Joint LaboratoryShanghai201803China Department of Medical Oncology Putuo HospitalShanghai University of Traditional Chinese MedicineShanghai200062China School of Pharmacy Shanghai University of Traditional Chinese MedicineShanghai201203China The Second Clinical Medical College of Henan University of Traditional Chinese Medicine Zhengzhou450000China Shanghai University of Traditional Chinese Medicine Shanghai201203China Precision Research Center for Refractory Diseases Institute for Clinical ResearchShanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai201620China

The density and composition of lymphocytes infiltrating colon tumors serve as predictive factors for the clinical outcome of colon *** previous studies highlighted the potent anti-cancer properties of the principal compounds found in Garcinia yunnanensis(YTE-17),attributing these effects to the regu-lation of multiple signaling ***,knowledge regarding the mechanism and effect of YTE-17 in the prevention of colorectal cancer is *** this study,we conducted isobaric tags for relative and absolute quantification(iTRAQ)analysis on intestinal epithelial cells(IECs)exposed YTE-17,both in vitro and in vivo,revealing a significant inhibition of the wnt family member 5a(wnt5a)/c-Jun n-terminal kinase(JnK)signaling ***,we elucidated the influence and mechanism of YTE-17 on the tumor microenvironment(TME),specifically focusing on macrophage-mediated T helper 17(Th17)cell induction in a colitis-associated cancer(CAC)model with wnt5a ***,we performed the single-cell RnA sequencing(scRnA-seq)on the colonic tissue from the wnt5a-deleted CAC model to characterize the composition,lineage,and functional status of immune mesenchymal cells during different stages of colorectal cancer(CRC)***,our findings demon-strate a significant reduction in M2 macrophage polarization and Th17 cell phenotype upon treatment with YTE-17,leading to the restoration of regulatory T(Treg)/Th17 cell balance in azoxymethane(AOM)/dextran sodium sulfate(DSS)***,we also confirmed that YTE-17 effectively inhibited the glycolysis of Th17 cells in both direct and indirect co-culture systems with M2 ***,our study shed light on potential mechanisms linking the non-canonical wnt5a/JnK signaling pathway and well-established canonical b-catenin oncogenic pathway in ***,we proposed that wnt5a/JnK signaling activity in IECs promotes the development of cancer stem cells with b-catenin activity within

关键词： Tumor microenvironment Intestinal epithelial cells Treg/Th17 cells Metabolism wnt5a/JnK signaling Tumorigenesis

Flexible interdigitated layered framework with multiple accessible active sites for high-performance CH_(3)I capture

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Science China Chemistry 2024年第5期67卷 1569-1577页

作者： Bo Tai Baoyu Li Linwei He Zhonglin Ma Shujing Lin Mingxing Zhang Junchang Chen Fuqi wu Long Chen Xing Dai Fuyin Ma Zhifang chai Shuao wang State Key Laboratory of Radiation Medicine and Protection School for Radiological and interdisciplinary Sciences(RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123China

The development of adsorbent materials for effective capture of radioactive iodomethane(CH_(3)I) from the off-gas of used nuclear fuel reprocessing, remains a significant and challenging line of research because currently state-of-art adsorbents still suffer from low binding affinity with CH_(3)I. Here, we proposed a brand-new adsorption topological structure by developing a 2D interdigitated layered framework, named SCU-20, featuring slide-like channel with multiple active sites for CH_(3)I capture. The responsive rotating-adaptive aperture of SCU-20 enables the optimal utilization of all active sites within the pore for highly selective recognition and capture of CH_(3)I. A record-breaking CH_(3)I uptake capacity of 1.84 g/g was achieved under static sorption conditions with saturated CH_(3)I vapor. Both experimental and theoretical findings demonstrated that the exceptional uptake of SCU-20 towards CH_(3)I can be attributed to the confined physical electrostatic adsorption of F sites, coupled with the chemical nitrogen methylation reaction with uncoordinated n atoms of pyrazine. Moreover, dynamic CH_(3)I uptake capacity potentially allows for the capture of CH_(3)I in simulated real-world off gas reprocessing conditions. This study highlights the potential of SCU-20 as a promising candidate for efficient capture of iodine species and contributes to the development of effective solutions for radioactive iodine remediation.

关键词： 2D interdigitated layered framework iodomethane dual-sites electrostatic interaction physisorption and chemisorption

Effects of triaxial deformation on the fission barrier in the Z=118−120 nuclei

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Communications in Theoretical Physics 2024年第6期76卷 92-101页

作者：柴清祯王佳利刘星汉 Institute of Theoretical Physics School of SciencesHenan University of TechnologyZhengzhou 450001China

By using potential energy surface(PES)calculations in the three-dimensional space(β_(2),γ,β_(4))within the framework of the macroscopic-microscopic model,the fission trajectory and fission barrier for Z=118(Og),119,120 nuclei has been systematically *** calculated PES includes macroscopic liquid-drop energy,microscopic shell correction and pairing *** the ^(294)Og176 nucleus as an example,we discuss the next closed shell after Z=82 and n=126 with the calculated woods-Saxon single-particle ***,the results of PES in ^(294)Og is illustrated from the(X,Y)scale to the(β_(2),γ)***γdegree of freedom reveals the shape evolution clearly during the fission *** structure near the minimum and saddle point of the PES in the Z=118,119,120 nuclei is demonstrated *** on the potential energy curves,general trends of the evolution of the fission barrier heights and widths are also *** triaxial deformation in these superheavy mass regions plays a vital role in the first fission barrier,showing a significant reduction in both triaxial *** addition,the model-dependent fission barriers of proton-rich nuclei ^(295)Og,296119,and 297120 are analyzed *** studies could be valuable for synthesizing the superheavy new elements in the forthcoming HIAF and other facilities.

关键词： fission barrier potential energy surface calculation triaxiality woods-Saxon potential superheavy new elements

A 24−30 GHz 8-element dual-polarized 5G FR2 phased-array transceiver IC with 20.8-dBm TX OP1dB and 4.1-dB RX nF in 65-nm CMOS

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Journal of Semiconductors 2024年第1期45卷 22-32页

作者： Yongran Yi Dixian Zhao Jiajun Zhang Peng Gu Chenyu Xu Yuan chai Huiqi Liu Xiaohu You national Mobile Communication Research Laboratory Southeast UniversityNanjing 211189China Purple Mountain Laboratories Nanjing 211111China Chengdu Xphased Technology Company Ltd. Chengdu 610041China

This article presents an 8-element dual-polarized phased-array transceiver(TRX)front-end IC for millimeter-wave(mm-wave)5G new radio(nR).Power enhancement technologies for power amplifiers(PA)in mm-wave 5G phased-array TRX are discussed.A four-stage wideband high-power class-AB PA with distributed-active-transformer(DAT)power combining and multi-stage second-harmonic traps is proposed,ensuring the mitigated amplitude-to-phase(AM-PM)distortions across wide carrier frequencies without degrading transmitting(TX)power,gain and *** and receiving(RX)switching is achieved by a matching network co-designed on-chip T/R *** each TRX element,6-bit 360°phase shifting and 6-bit 31.5-dB gain tuning are respectively achieved by the digital-controlled vector-modulated phase shifter(VMPS)and differential attenuator(ATT).Fabricated in 65-nm bulk complementary metal oxide semiconductor(CMOS),the proposed TRX demonstrates the measured peak TX/RX gains of 25.5/21.3 dB,covering the 24−29.5 GHz *** measured peak TX OP1dB and power-added efficiency(PAE)are 20.8 dBm and 21.1%,*** measured minimum RX nF is 4.1 *** TRX achieves an output power of 11.0−12.4 dBm and error vector magnitude(EVM)of 5%with 400-MHz 5G nR FR2 OFDM 64-QAM signals across 24−29.5 GHz,covering 3GPP 5G nR FR2 operating bands of n257,n258,and n261.

关键词： fifth-generation(5G) power amplifier millimeter-wave transceiver phased-array