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Progress in self-powered sensors—Moving toward artificial intelligent and neuromorphic system

Nano Research 2023年第9期16卷 11801-11821页

作者： Feng Wen chan wang Chengkuo Lee Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore Center for Intelligent Sensors and MEMS(CISM) National University of SingaporeSingapore 117608Singapore National University of Singapore Suzhou Research Institute(NUSRI) Suzhou 215123China NUS Graduate School-Integrative Sciences and Engineering Programme(ISEP) National University of SingaporeSingapore 119077Singapore

Wearable and flexible electronics are shaping our life with their unique advantages of light weight,good compliance,and desirable *** marching into the era of Internet of Things(IoT),numerous sensor nodes are distributed throughout networks to capture,process,and transmit diverse sensory information,which gives rise to the demand on self-powered sensors to reduce the power ***,the rapid development of artificial intelligence(AI)and fifth-generation(5G)technologies provides an opportunity to enable smart-decision making and instantaneous data transmission in IoT *** to continuously increased sensor and dataset number,conventional computing based on von Neumann architecture cannot meet the needs of brain-like high-efficient sensing and computing applications *** electronics,drawing inspiration from the human brain,provide an alternative approach for efficient and low-power-consumption information ***,this review presents the general technology roadmap of self-powered sensors with detail discussion on their diversified applications in healthcare,human machine interactions,smart homes,*** leveraging AI and virtual reality/augmented reality(VR/AR)techniques,the development of single sensors to intelligent integrated systems is reviewed in terms of step-by-step system integration and algorithm *** order to realize efficient sensing and computing,brain-inspired neuromorphic electronics are next briefly ***,it concludes and highlights both challenges and opportunities from the aspects of materials,minimization,integration,multimodal information fusion,and artificial sensory system.

关键词： wearable and flexible electronics self-powered sensors virtual reality/augmented reality(VR/AR)and artificial intelligence(AI)-enhanced system neuromorphic electronics

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远近端环境因素对留守经历大学生早期适应不良图式的影响

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中国健康心理学杂志 2025年第1期33卷 149-155页

作者：秦红霞王婵汪长亮安徽科技学院人文学院(滁州) 233100 安徽科技学院学生心理健康教育与咨询中心

目的:探讨留守过程中的远近端环境因素对留守经历大学生早期适应不良图式间的影响。方法:采用Young图式问卷第三版中文版、儿童期创伤问卷及父母与同伴依恋问卷简版对1423名大学生(其中有留守经历大学生547名)进行调查,通过相关分析、... 详细信息

目的:探讨留守过程中的远近端环境因素对留守经历大学生早期适应不良图式间的影响。方法:采用Young图式问卷第三版中文版、儿童期创伤问卷及父母与同伴依恋问卷简版对1423名大学生(其中有留守经历大学生547名)进行调查,通过相关分析、线性回归分析及中介效应分析对数据进行分析处理。结果:相关分析得到远端环境因素中仅有联系频率与早期适应不良图式间存在显著相关(r=0.12,P<0.01),近端环境因素中的儿童期创伤(r=0.30,P<0.001)、亲子疏离(r=0.44,P<0.001)与早期适应不良图式存在显著的正相关,而亲子安全依恋与早期适应不良图式存在显著的负相关(r=-0.29,P<0.001);线性回归分析得到情感虐待(β=0.21,t=4.18,P<0.001)、躯体忽视(β=0.10,t=2.17,P<0.05)及亲子疏离(β=0.33,t=7.61,P<0.001)对早期适应不良图式具有显著的正向预测作用,而情感忽视(β=-0.13,t=-2.68,P<0.01)和亲子安全依恋(β=-0.13,t=-3.13,P<0.001)则具有显著负向预测作用;中介效应分析得到儿童期创伤、亲子安全依恋在联系频率、联系时长对早期适应不良图式的影响中起完全中介作用,亲子疏离在联系频率对早期适应不良图式的影响中起完全中介作用。结论:近端环境因素中的儿童期创伤及亲子依恋对留守经历大学生的早期适应不良图式存在显著的直接影响,而远端环境因素中仅有能反映亲子互动情况的联系频率和联系时长对早期适应不良图式存在影响,且这一影响是通过儿童期创伤和亲子依恋等近端环境因素而产生的。

关键词：留守经历大学生早期适应不良图式远近端环境因素儿童期创伤亲子依恋

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Catalytic Oxidation of Trichioroethylene over RuO2 Supported on Ceria-zirconia Mixed Oxide

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Chemical Research in Chinese Universities 2019年第1期35卷 71-78页

作者： LU Lulu wang chan wang Mei SONG Qijun Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122P.R.China 不详

Ru/Ce-Zr catalysts were prepared by impregnation of Ru on the hydrothermally synthesized Ce-Zr mixed oxide with different molar ratio of Ce/*** resultant products were systematically characterized by inductively coupled plasma(ICP),X-ray diffraction(XRD),scanning electron microscopy(SEM)/energy dispersive spectrometry(EDS),H2-temperature programmed reduction(H2-TPR),NH3-temperature programmed desorption(NH3-TPD)and X-ray photoelectron spectroscopy(XPS).It was proved by H2-TPR and NH3-TPD that the introduction of Ru can improve the activity of oxygen of catalysts and the presence of Zr contributes to the increments of acid properties of *** the molar ratio of Ce-Zr was 8:4,the quantity of Ru was 0.9%(mass ratio),and the calcined temperature of catalysts was at 400℃,the removal rate of 90% for trichloroethylene(TCE)was reached at 250℃ for 5360 mg/m^3 TCE and the stability of the catalysts was investigated under the *** results showed that the high removal rate can be maintained for at least 90 h,which is promising for industrial application.

关键词： Catalytic oxidation Trichloroethylene RuO2 Ceria-zirconia mixed oxide

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The function-oriented precursor selection for the preparation of carbon dots

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Nano Research 2023年第8期16卷 11221-11249页

作者： Yalan Xu chan wang Huan Zhuo Dongrun Zhou Qijun Song Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122China

As a new type of fluorescent nanomaterials,carbon dots(CDs)have exhibited excellent photoluminescence properties with tunable emission and high quantum yields,hence they have attracted an increasing interest in diverse research *** photoluminescence performance of CDs is primarily influenced by their precursors,which directly or indirectly determine the structures and specific functions of the resultant *** this review,we aim to summarize the recent progress on synthesis of CDs using small aliphatic molecules,anilines,polyphenol,polycyclic aromatic hydrocarbons,organic dyes,or biomass as *** associations of the physical and chemical properties of the CDs with their respective precursors are comprehensively investigated,and the potential applications and future development of CDs are discussed in *** is hoped that this review will open new horizons for CDs preparation by rational selection of the precursors from the vastly available carbon sources and the critical comments presented,here could inspire and guide future research in the design of multifunctional CDs.

关键词： carbon dots precursors photoluminescence fluorophore sensing imaging

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One-step synthesis of fluorescent smart thermo- responsive copper clusters： A potential nanothermometer in living cells

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Nano Research 2015年第6期8卷 1975-1986页

作者： chan wang Lin Ling Yagang Yao Qijun Song Key Laboratory of Food Colloids and Biotechnology Ministry of Education School of Chemical & Material Engineering Jiangnan University Wuxi 214122 China Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Suzhou 215123 China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemistry and Chemical Engineering Nanjing Tech University Nanjing 210009 China

Temperature measurement in biology and medical diagnostics, along with sensitive temperature probing in living cells, is of great importance; however, it still faces significant challenges. Metal nanoclusters （NCs） with attractive luminescent properties may be promising candidates to overcome such challenges. Here, a novel one-step synthetic method is presented to prepare highly fluorescent copper NCs （CuNCs） in ambient conditions by using glutathione （GSH） as both the reducing agent and the protective layer preventing the aggregation of the as-formed NCs. The resultant CuNCs, with an average diameter of 2.3 nm, contain 1-3 atoms and exhibit red fluorescence （A^m = 610 nm） with high quantum yields （QYs, up to 5.0%）. Interestingly, the fluorescence signal of the CuNCs is reversibly responsive to the environmental temperature in the range of 15-80 ℃. Furthermore, as the CuNCs exhibit good biocompatibility, they can pervade the MC3T3-E1 cells and enable measurements over the physiological temperature range of 15-45 ℃ with the use of the confocal fluorescence imaging method. In view of the facile synthesis method and attractive fluorescence properties, the as-prepared CuNCs may be used as photoluminescence thermometers and biosensors.

关键词： fluorescence copper nanoclusters cellular imaging nanothermometer

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Deep Learning Aided SCL Decoding of Polar Codes with Shifted-Pruning

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China Communications 2023年第1期20卷 153-170页

作者： Yang Lu Mingmin Zhao Ming Lei chan wang Minjian Zhao College of Information Science and Electronic Engineering Zhejiang UniversityHangzhou 310027China Zhejiang Provincial Key Laboratory of Information Processing Communication and Networking(IPCAN)Hangzhou 310027China

Recently,a generalized successive cancellation list(SCL)decoder implemented with shiftedpruning(SP)scheme,namely the SCL-SP-ωdecoder,is presented for polar codes,which is able to shift the pruning window at mostωtimes during each SCL re-decoding attempt to prevent the correct path from being *** candidate positions for applying the SP scheme are selected by a shifting metric based on the probability that the elimination ***,the number of exponential/logarithm operations involved in the SCL-SP-ωdecoder grows linearly with the number of information bits and list size,which leads to high computational *** this paper,we present a detailed analysis of the SCL-SP-ωdecoder in terms of the decoding performance and complexity,which unveils that the choice of the shifting metric is essential for improving the decoding performance and reducing the re-decoding attempts ***,we introduce a simplified metric derived from the path metric(PM)domain,and a custom-tailored deep learning(DL)network is further designed to enhance the efficiency of the proposed simplified *** proposed metrics are both free of transcendental functions and hence,are more hardware-friendly than the existing *** results show that the proposed DL-aided metric provides the best error correction performance as comparison with the state of the art.

关键词： polar codes successive cancellation list decoding deep learning shifted-pruning path metric

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Catalytic conversion of glucose to small polyols over a binary catalyst of vanadium modified beta zeolite and Ru/C

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Journal of Energy Chemistry 2019年第7期28卷 88-95页

作者： Joby Sebastian Mingyuan Zheng Xinsheng Li Jifeng Pang chan wang Tao Zhang Dalian Institute of Chemical Physics Chinese Academy of Sciences

Catalytic conversion of glucose, the most abundant carbohydrate, to chemicals of petroleum origin has great desirability in terms of sustainability and industrial implementation. In this work, we attempted to exploit the vanadium-based catalysts with high retro-aldol condensation(RAC) activity for the synthesis of small polyols from glucose. Vanadium species incorporated or anchored beta zeolites were found to work effectively in synergy with 1 Ru/AC to produce hydroxyacetone(HA) as the major product(34%)in a semi-continuously stirred tank reactor under 5% glucose concentration. Catalyst characterization by UV-vis and Raman spectral analysis revealed vanadium species mainly stayed in the incorporated form(tetrahedral) at 0.5% of loading and in the supported form(octahedral) at higher loadings up to 8%. Pyridine infrared spectra and temperature programmed desorption of NH3 revealed weak Lewis acid sites in dominance. Vanadium species in the catalysts displayed multiple catalytic roles(isomerization and RAC reaction, and synergism with the hydrogenation catalyst) in the synthesis of HA from glucose. Structureactivity correlation pointed out that the catalytic activity of vanadium species is not dependent on it coordination status, nevertheless, the adjacent vanadium atoms could possibly improve the isomerization rate over the RAC rate in favor of high yield of HA. The catalyst system is recyclable to at least five times without any considerable loss in its activity and structural integrity. The results presented here provide a promising route for the sustainable production of HA and polyols from carbohydrates by using a highly selective vanadium catalyst.

关键词： Vanadium Glucose Retro-aldol condensation Polyols Hydroxyacetone

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Surface-state controlled synthesis of hydrophobic and hydrophilic carbon dots

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Nano Research 2024年第5期17卷 4391-4399页

作者： chan wang Yuan Fang Mi Zhang Huan Zhuo Qijun Song Han Zhu Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122China Jiangsu Snow Leopard Household Chemical Co. Ltd.Wuxi 214400China

It is of great significance to synthesize carbon dots(CDs)with desirable hydrophilicity for the ever-growing application of CDs in different *** this study,the hydrophilic and hydrophobic CDs were facilely prepared by solvothermal treatment of o-dihydroxybenzene and urea in N,N-dimethylformamide(DMF).Optimization experiments revealed that the solvothermal temperature has a great impact on the surface states of the *** hydrophobic CDs with a contact angle of 110.7°was obtained at 200℃.The structural and optical characterizations,along with theoretical calculations elucidated that the lipophilic nature of the CDs was resulting from the formation of polymer *** presence of extended conjugated sp^(2)-domains and amino groups contributed to the red emission of the CDs synthesized at low reaction temperatures(160-200℃).With the further increase of solvothermal temperature,the hydrophobic CDs were gradually transformed to the hydrophilic state accompanying the blue shift of the fluorescence of the *** highly hydrophilic CDs with a contact angle of 25.9°were obtained at 240℃ due to the increased formation of hydrophilic functional groups on the surface of *** red emissive CDs exhibited a sensitive color and fluorescence response to ethanol content while the fluorescence of the blue emissive CDs remained *** combining the two kinds of CDs,a dual-emission sensor was constructed,which was successfully applied for the evaluation of the alcoholic strength in commercial Baijiu commodities in both fluorometric and colorimetric modes.

关键词： carbon dots surface chemistry hydrophilicity and hydrophobicity solvothermal temperature alcoholic strength evaluation

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Surface oxidation of carbon dots enables highly selective and sensitive chemiluminescence detection of hydroxyl radical

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Nano Research 2024年第11期17卷 9275-9283页

作者： chan wang Yuan Fang Dongrun Zhou Chenxi Wu Han Zhu Qijun Song Key Laboratory of Synthetic and Biological Colloids Ministry of Education School of Chemical and Material Engineering Jiangnan University Wuxi 214122 China

The rapid quantification of hydroxyl radical (·OH) in real samples is a great challenge due to its highly reactive nature and the potential interferences from other coexisting reactive oxygen species (ROS). Herein, a chemiluminescence (CL) probe (ox-CDs) was rationally developed for the detection of ·OH through controlled oxidation treatment of original CDs (o-CDs) with H_(2)O_(2). Post-oxidation of CDs can reduce the surface defects or functional groups on the CDs, exposing reactive sites capable of effectively reacting with ·OH. The chemical energy generated from redox reaction between ·OH and the ox-CDs can be efficiently utilized to generate strong and selective CL responses to ·OH without interferences from other ROS. Thus, a highly selective and sensitive CL method with a linear range from 0.01 to 150 μM and a detection limit of 3 nM was developed, which was successfully applied for monitoring the ·OH production from cigarette and mosquito coil smoke.

关键词： carbon dots post-oxidation chemiluminescence probe detection of·OH cigarette and mosquito coil smoke

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Preparation of multicolor carbon dots with thermally turn-on fluorescence for multidimensional information encryption

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Chinese Chemical Letters 2024年第1期35卷 343-347页

作者： chan wang Jianfeng Huang Yimin He Guoxia Ran Qijun Song Key Laboratory of Synthetic and Biological Colloids Ministry of EducationInternational Joint Research Center for Photoresponsive Molecules and MaterialsSchool of Chemical&Material EngineeringJiangnan UniversityWuxi 214122China Department of Radiation Oncology Affiliated Hospital of Jiangnan UniversityWuxi 214122China

Carbon dots(CDs)with superior fluorescence properties have attracted a growing number of research interests in ***,the preparation of CDs with thermally turn-on fluorescence and full-color-emitting in visible spectrum is still a big challenge due to the complicated reaction mechanism in the formation of ***,a simple precursor-oriented strategy for the preparation of multicolor CDs with heat-stimuli turn-on fluorescence is *** experimental characterizations and theoretical calculations revealed that the emission wavelength of CDs can be readily tuned from 460 nm to 654 nm with selected precursors,which was ascribed to the extent of conjugated sp2-domains(core states)and the amount of oxygen-and nitrogen-containing groups bound to sp2-domains(surface states).After simply mixing two or three kinds of CDs,a full-color range of fluorescence emission was realized,and the CDs-based fluorescence inks were successfully ***,all the printed patterns from the inkjet exhibited a thermal-induced enhancement in *** this basis,combining CDs with heating-induced“turn-off”fluorescence materials can lead to multidimensional and multistage *** results demonstrate that the thermochromic and photochromic CDs with much more enhanced security exhibit promising application in data storage and encryption.

关键词： Carbon dots Precursor-oriented structure Full-color fluorescence Turn-on thermosensitivity Advanced anti-counterfeiting

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