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Journal of Rare Earths 2023年第2期41卷 200-207页

作者： Haining Song Haifeng Zhou Qianqian Zhuang Zexin Li Fenglei Sun Zhenlei Yuan Youxin Lou Guangjun Zhou Yujun Zhao School of Materials Science and Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China State Key Laboratory of Biobased Material and Green Papermaking School of BioengineeringQilu University of Technology(Shandong Academy of Sciences)Jinan 250353China

Oxidizing CIO^(-)and IO_(4)^(-)exist widely in environment and are closely related to the health of organisms.Accordingly,fast,sensitive,and direct detection of the two species is significant.Using IFE in UCNPs@PAA and Fe(Ⅱ)-phenanthroline system,an elegant ratiometric fluorescent nanosensor,without noble metal nanoparticle,was designed for the detection of CIO-and IO4-.Fe(Ⅱ)-phenanthroline complex is used as fluorescent absorber,which can quench green light of UCNPs with gradually varied extent depending on the concentration of Fe(Ⅱ).The linear zone extends to 800 and 120μmol/L while the detection limit is 1.30 and 0.58μmol/L for NaCIO and NaIO_(4),respectively.Finally,the nanosensor was successfully applied to detect NaCIO and NaIO4spiked in milk,spring water,and tap water with good recoveries.

关键词： Hypochlorite Periodate nanosensor Upconversion nanoparticles Inner filter effect Rare earths

Attitude stability control system of mobile robot mechanism based on nanosensor

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Journal of Control and Decision 2023年第1期10卷 13-18页

作者： Dongfang Song Hong Ji Guanfei Yin Henan Polytechnic ZhengzhouPeople’s Republic of China

Aiming at the poor stability of attitude control of mobile robot mechanism, a kind of attitude stabilitycontrol system of mobile robot mechanism based on nanodisplacement sensor is designed.In the hardware part, a hydraulic drive is used to control the action posture of the mobile robot,a nanodisplacement sensor is used to collect the walking data of the robot, and serial communicationof the upper computer is used to convert the data into electrical signals to realise therobot posture control. In the software part, the mathematical coordinate system of robot walkingis constructed, and the rotating posture of the robot is controlled by the Euler angle. Theexperimental results show that the control performance of the designed system is stable andthe control precision is high, which can realise the attitude stabilisation control of the mobilerobot.

关键词： nanosensor mobile robot attitude control nanopositioning system

Review on the application of upconversion nanomaterials in heavy metal detection

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Food and Health 2024年第3期6卷 1-17页

作者： Yu-Hong He Xi Yu Faculty of Traditional Chinese Medicine Macao University of Science and TechnologyMacaoChina.2 Faculty of MedicineMacao University of Science and TechnologyMacaoChina

As a widespread element,heavy metals have a significant impact on human health and threaten human health.It is of great significance to develop analytical technologies that can detect heavy metal ions quickly and accurately.In comparison to conventional fluorescent materials such as organic dyes,quantum dot(QD)labels,and carbon quantum dots(CD),fluorescence detection technology utilizing lanthanide(Ln)ion-doped upconversion nanoparticles(UCNPs)stands out due to its distinctive attributes.These include a notably reduced autofluorescence background,enhanced tissue penetration capabilities,biocompatibility with cellular tissues,and minimal photodamage inflicted on biological samples.The utilization of this technology has garnered considerable attention across multiple fields.In the domain of heavy metal detection,traditional laboratory methods necessitate costly instrumentation and a fully equipped laboratory,involving intricate sample processing procedures and protracted detection periods,as well as a demand for skilled personnel.In contrast,the implementation of this material offers rapid and cost-effective detection,significantly mitigating the technical barriers for operators.Consequently,this represents an exceptional avenue to curtail expenses and broaden the scope of detection within the analytical process.This paper reviews the research progress of UCNPs in the detection of heavy metal ions,encompassing a brief elucidation of the luminescence principle of upconversion nanomaterials and commonly used detection principles.Additionally,it provides a detailed overview of the research status of several common non-metal ions and essential heavy metals.Furthermore,it summarizes the current focal points in UCNP detection and discusses the challenges and prospects associated with it.

关键词： Heavy metals Upconversion nanoparticles Gold nanoparticles nanosensor Fluorescence detection technology

Remote Tracking Gas Molecular via the Standalone-Like nanosensor-Based Tele-Monitoring System

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Nano-Micro Letters 2021年第2期13卷 207-220页

作者： Han Jin Junkan Yu Daxiang Cui Shan Gao Hao Yang Xiaowei Zhang Changzhou Hua Shengsheng Cui Cuili Xue Yuna Zhang Yuan Zhou Bin Liu Wenfeng Shen Shengwei Deng Wanlung Kam Waifung Cheung Institute of Micro-Nano Science and Technology School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China National Engineering Research Center for Nanotechnology Shanghai 200240People’s Republic of China School of Electrical Engineering and Computer Science Ningbo UniversityNingbo 315211People’s Republic of China State Key Laboratory of Pathogen and Biosecurity Institute of Microbiology and EpidemiologyAcademy of Military Medical SciencesBeijing 100071People’s Republic of China Ningbo Materials Science and Technology Institute Chinese Academy of SciencesNingbo 315201People’s Republic of China College of Chemical Engineering Zhejiang University of TechnologyHangzhou 310014People’s Republic of China Qi Diagnostics Ltd HongkongPeople’s Republic of China

Remote tracking the variation of air quality in an effective way will be highly helpful to decrease the health risk of human short-and long-term exposures to air pollution.However,high power consumption and poor sensing performance remain the concerned issues,thereby limiting the scale-up in deploying air quality tracking networks.Herein,we report a standalone-like smart device that can remotely track the variation of air pollutants in a power-saving way.Brevity,the created smart device demonstrated satisfactory selectivity(against six kinds of representative exhaust gases or air pollutants),desirable response magnitude(164–100 ppm),and acceptable response/recovery rate(52.0/50.5 s),as well as linear response relationship to NO2.After aging for 2 weeks,the created device exhibited relatively stable sensing performance more than 3 months.Moreover,a photoluminescence-enhanced light fidelity(Li-Fi)telecommunication technique is proposed and the Li-Fi communication distance is significantly extended.Conclusively,our reported standalone-like smart device would sever as a powerful sensing platform to construct high-performance and low-power consumption air quality wireless sensor networks and to prevent air pollutant-induced diseases via a more effective and low-cost approach.

关键词： Metal-organic framework-derived polyhedral ZnO Perovskite quantum dots nanosensor NO2 Tele-monitoring system

Label-free colorimetric nanosensor with improved sensitivity for Pb^2+ in water by using a truncated 8-17 DNAzyme

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Frontiers of Environmental Science & Engineering 2019年第1期13卷 129-134页

作者： Abdul Ghaffar Memon Xiaohong Zhou Yunpeng Xing Ruoyu Wang Lanhua Liu Mohsin Khan Miao He Center for Sensor Tech no logy of Environment and Health State Key Joint Laboratory of ESPC School of Environment Tsinghua University Beijing 100084 China Department of Environmental Engineering NED University of Engineering and Technology Karachi 75270. Pakistan

Water pollution accidents, such as the Flint water crisis in the United States, caused by lead contamination have raised concern on the safety of drinking water distribution systems. Thus, the routine monitoring of lead in water is highly required and demands efficient, sensitive, cost-effective, and reliable lead detection methods. This study reports a label-free colorimetric nanosensor that uses unmodified gold nanoparticles (AuNPs) as indicators to enable rapid and ultra-sensitive detection of lead in environmental water. The 8-17 DNAzyme was truncated in this study to facilitate the detachment of single-stranded DNA fragments after substrate cleavage in the presence of Pb「. The detached fragments were adsorbed over AuNPs and protected against salt concentration-induced aggregation. Accordingly, high Pb^2+ would result in rapid color change from blue to pink. The established sensing principle achieved a sensitive limit of detection of 0.2×10^-9mol/L Pb^2+. with a linear working range of two orders of magnitude from 0.5×10^-9mol/L to 5×10^-9mol/L. The selectivity of the nanosensor was demonstrated by evaluating the interfering metal ions. The developed nanosensor can serve as a substitute for the rapid analysis and monitoring of trace lead levels under the drinking water distribution system and even other environmental water samples.

关键词： Colorimetric nanosensor Truncated 8-17 DNAzyme Pb^2+ detection Unmodified AuNPs

Protein-mimicking nanoparticle(Protmin)-based nanosensor for intracellular analysis of metal ions

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Nuclear Science and Techniques 2018年第1期29卷 82-89页

作者： Dan Zhu Dong-Xia Zhao Jia-Xuan Huang Jiang Li Xiao-Lei Zuo Li-Hua Wang Chun-Hai Fan Division of Physical Biology and Bioimaging Center Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics Chinese Academy of Sciences Key Laboratory for Organic Electronics and Information Displays Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Jiangsu Key Laboratory for BiosensorNanjing University of Posts and Telecommunications

In this study, we designed and applied proteinmimicking nanoparticles(Protmin) as an intracellular nanosensor for in vivo detection of lead ions(Pb^(2+)).Monodispersed gold nanoparticles(Au NPs) of 13 nm in diameter were modified using poly-adenine-tailed Pb^(2+)-specific 8–17 DNAzyme to form a spherical and functional Protmin. Substrate strands modified with a fluorophore at the 50 end and a quencher at the 30 end were bound to DNAzyme. Pb^(2+) facilitated cleavage of DNAzyme to release the fluorophore-modified short strands to generate fluorescence. We observed rapid kinetics of the Protmin nanosensor, for which the typical assay time was 10 min.Further, we demonstrated the Protmin nanosensor could readily enter living cells and respond to Pb^(2+) in the intracellular environment. The broad of range of Protmindesigns will be useful for advancing biological and medical applications.

关键词： Protmin nanosensor Poly-adenine Lead ion Intracellular detection

A Convenient ＂Turn On-off＂ Phosphorescent nanosensor for Detection of Biotin Based on Quantum Dots/CTAB

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Chemical Research in Chinese Universities 2016年第6期32卷 917-923页

作者： FANG Xiaoxing ZHENG Ji YAN Guiqin School of Life Science Shanxi Normal University Linfen 041000 P. R. China

A switchable room-temperature phosphorescence（RTP） nanosensor based on an MPA-capped Mn-dopedZnS QDs/CTAB composite system（MPA=3-mercaptopropionic acid; CTAB=cetyltrimethyl ammonium bromide;QDs=quantum dots） was established for the detection of biotin. The phosphorescence intensity of QDs/CTAB couldbe regularly quenched with the increase of biotin. Under optimal conditions, this method yielded two linear ranges of2-20 μg/L and 20-140 μg/L with respective correlation coefficients of 0.993 and 0.990, as well as a detection limitof 0.93 μg/L. Therefore, the analytical potential of the proposed nanosensor was evaluated by detecting biotin inurine and biotin tablets. This approach yielded satisfactory results because of the effective elimination of backgroundfluorescence and light scattering from the sample matrix. This approach provides a practical method for biotin detec-tion.

关键词： Biotin nanosensor Quantum dot Room-temperature phosphorescence

A Supersmall Single-Cell nanosensor for Intracellular K^(+) Detection

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CCS Chemistry 2021年第9期3卷 2359-2367页

作者： Xiao-Mei Shi Yi-Fan Ruan Hai-Yan Wang Wei-Wei Zhao Jing-Juan Xu Hong-Yuan Chen State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023

Intracellular potassium ions(K^(+))play pivotal roles in many physiological processes.Several K^(+)sensors have been developed for probing cellular K^(+)fluctuations.Nevertheless,the existing solutions are incompatible and impractical for intracellular K^(+)probing.Herein,we report a supersmall biomimetic K^(+)nanosensor to serve as a transmembrane vector capable of electrochemically detecting intracellular K^(+)in a minimally invasive manner.

关键词： single-cell analysis potassium ions nanosensor transmembrane G-quadruplex DNA

Patulin Imprinted Nanoparticles Decorated Surface Plasmon Resonance Chips for Patulin Detection

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Photonic Sensors 2022年第2期12卷 117-129页

作者： Duygu CIMEN Nilay BERELI Adil DENIZLI Department of Chemistry Hacettepe UniversityAnkara 06800Turkey

In this study,the patulin imprinted and the non-imprinted nanoparticles are synthesized by the two-phase mini emulsion polymerization method and characterized by zeta-size analysis,Fourier transform infrared spectroscopy,and scanning electron microscopy.Afterwards,the patulin imprinted and the non-imprinted nanoparticles are attached on the surface of surface plasmon resonance(SPR)chips.The patulin imprinted and the non-imprinted SPR nanosensors are characterized by using atomic force microscope,ellipsometer,and contact angle measurements.Kinetic studies for patulin detection are carried out in the concentration range of 0.5nmol-750nmol.The limit of detection and the limit of quantification values are obtained as 0.011 nmol and 0.036 nmol,respectively.In all kinetic analysis,the response time is 13 min for equilibration,adsorption,and desorption cycles.The selectivity studies of the patulin imprinted and the non-imprinted SPR nanosensors are determined in the presence of ochratoxin A and aflatoxin Bl.In order to demonstrate the applicability,validation studies of the patulin imprinted SPR nanosensor are performed by liquid chromatography-tandem mass spectrometry(LC-MS).

关键词： Patulin surface plasmon resonance nanosensor molecular imprinting technique

Peptide Functionalized Nanoplasmonic Sensor for Explosive Detection

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Nano-Micro Letters 2016年第1期8卷 36-43页

作者： Diming Zhang Qian Zhang Yanli Lu Yao Yao Shuang Li Jing Jiang Gang Logan Liu Qingjun Liu Biosensor National Special Laboratory Key Laboratory for Biomedical Engineering of Education Ministry Department of Biomedical Engineering Zhejiang University Micro and Nanotechnology Lab University of Illinois at Urbana-Champaign

In this study, a nanobiosensor for detecting explosives was developed, in which the peptide was synthesized with trinitrotoluene(TNT)-specific sequence and immobilized on nanodevice by Au–S covalent linkage, and the nanocup arrays were fabricated by nanoimprint and deposited with Au nanoparticles to generate localized surface plasmon resonance(LSPR). The device was used to monitor slight change from specific binding of 2,4,6-TNT to the peptide. With high refractive index sensing of ~10~4nm/RIU, the nanocup device can detect the binding of TNT at concentration as low as3.12×10^(-7)mg mL^(-1) by optical transmission spectrum modulated by LSPR. The nanosensor is also able to distinguish TNT from analogs of 2,4-dinitrotoluene and 3-nitrotoluene in the mixture with great selectivity. The peptide-based nanosensor provides novel approaches to design versatile biosensor assays by LSPR for chemical molecules.

关键词： Nanocup arrays Peptide 2,4,6-trinitrotoluene(TNT) Localized surface plasmon resonance(LSPR) nanosensor