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Uniform and Homogeneous Growth of Copper Nanoparticles on Electrophoretically Deposited Carbon Nanotubes Electrode for Nonenzymatic glucose sensor

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Acta Metallurgica Sinica(English Letters) 2016年第10期29卷 889-894页

作者： Syeda Ammara Shahzadi Shamaila Rehana Sharif Sheeba Ghani Nosheen Zafar Department of Physics University of Engineering and Technology Department of Physics Forman Christian College (A Chartered University)

The multiwalled carbon nanotubes thin-film-based electrode was fabricated by electrophoretic deposition and modified with copper （Cu） nanoparticles to fabricate Cu/CNTs nanocomposite sensor for nonenzymatic glucose detection. The expensive glassy carbon electrode was replaced by fluorine-doped tin oxide glass containing CNTs film to confine the Cu nanoparticles growth by electrodeposition through cyclic voltammetry （CV）. The ultraviolet visible and X-ray diffraction analysis revealed the successful deposition of Cu nanoparticles on the CNTs-modified electrode. The atomic force microscopy images confirrqed the morphology of electrodeposited Cu on CNTs film as uniformly dispersed particles. The electrocatalytic activity of electrode to the glucose oxidation was investigated in alkaline medium by CV and amperometric measurements. The fabricated sensor exhibited a fast response time of less than 5 s and the sensitivity of 314 μA rnM^-1 cm^-2 with linear concentration range （0.02-3.0 mM） having detection limit 10.0 μM. Due to simple preparation of sensor, Cu/CNTs nanocomposite electrodes are a suitable candidate for reliable determination of glucose with good stability.

关键词： Electrophoretic deposition （EPD） Fluorine-doped tin oxide （FTO） substrate Carbon nanotubes Copper nanoparticles Nonenzymatic electrocatalysis glucose sensor

Calibration of the Circuit Measurement for the glucose sensor

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稀有金属材料与工程 2006年第A3期35卷 337-338页

作者： Jung-Chuan Chou Sung-Chih Chen Department of Electronic Engineering National Yunlin University of Science and TechnologyDouliouTaiwan 640China

The extended gate field effect transistor (EGFET)has many advantages such as the fabrication is easy,low cost, easy to operate etc.The EGFET was applied to biosensor in recent years.In this study,the tin oxide (SnO_2)pH sensitive membrane was deposited on ITO glass,when the surface voltage which pH membrane changes,the gate voltage and current channel of MOSFET will change immediately to detect concentration of the glucose sensor.In this study we have devoted to research about the calibration of the circuit measurement for the glucose sensor,and study the calibration system of the drift and hysteresis.

关键词： glucose sensor extended gate field effect transistor(EGFET) SnO2/ITO glass drift hysteresis

Boric Acid-Based Dual Modulation Photoluminescent glucose sensor Using Thioglycolic Acid-Capped CdTe Quantum Dots

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Journal of Analysis and Testing 2017年第4期1卷 291-297页

作者： Saadat Majeed WenyueGao Jianping Lai Chao Wang JianpingLi Zhongyuan Liu Guobao Xu State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences5625 Renmin StreetChangchun 130022JilinPeople’s Republic of China University of Chinese Academy of Sciences Chinese Academy of SciencesNo.19A YuquanluBeijing 100049China Division of Analytical Chemistry Institute of Chemical SciencesBahauddin Zakariya UniversityMultan 60800Pakistan College of Chemistry and Bioengineering Guilin University of TechnologyGuilin 541004People’s Republic of China

Most luminescent glucose sensors based on the interaction of glucose with organic boric acids or borates.Herein,a new luminescent glucose sensor is designed using thioglycolic acid-capped CdTe quantum dots in the presence of cheap inorganic boric acid.Both peak position and intensities change upon the addition of glucose because of the interaction of boric acid with glucose and thioglycolic acid-capped CdTe quantum dots,which enables glucose detection by either color change or intensity change.The luminescent intensities change linearly with glucose concentrations in the ranges from 0.03 to 1 mM and 1–25 mM with a detection limit of 10μM(S/N=3).Moreover,glucose concentrations can be conveniently detected by color change in the range from 1 mM–25 mM.It displays a highly selective response to glucose over other interfering but biologically important saccharides,amino acids,and common ions.Graphical Abstract A thioglycolic acid-capped CdTe QD-based sensor can detect glucose with wide linear range by change in intensity or color in the presence of cheap inorganic boric acid.

关键词： CdTe quantum dots glucose sensor Thioglycolic acid

HEXOKINASE1 forms a nuclear complex with the PRC2 subunits CURLY LEAF and SWINGER to regulate glucose signaling

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Journal of Integrative Plant Biology 2022年第6期64卷 1168-1180页

作者： Yutong Liu Yunshu Bai Ning Li Mengting Li Wenxin Liu Dae-Jin Yun Bao Liu Zheng-Yi Xu Key Laboratory of Molecular Epigenetics of the Ministry of Education(MOE) Northeast Normal UniversityChangchun 130024China Department of Biomedical Science and Engineering Konkuk UniversitySeoul 132‐798South Korea

The glucose sensor HEXOKINASE1(HXK1)integrates myriad external and internal signals to regulate gene expression and development in Arabidopsis thaliana.However,how HXK1 mediates glucose signaling in the nucleus remains unclear.Here,using immunoprecipitationcoupled mass spectrometry,we show that two catalytic subunits of Polycomb Repressive Complex 2,SWINGER(SWN)and CURLY LEAF(CLF),directly interact with catalytically active HXK1 and its inactive forms(HXK1^(G104D) and HXK1^(S177A))via their evolutionarily conserved SANT domains.HXK1,CLF,and SWN target common glucose-responsive genes to regulate glucose signaling,as revealed by RNA sequencing.The glucose-insensitive phenotypes of the Arabidopsis swn-1 and clf-50 mutants were similar to that of hxk1,and genetic analysis revealed that CLF,SWN,and HXK1 function in the same genetic pathway.Intriguingly,HXK1 is required for CLF-and SWN-mediated histone H3 lysine 27(H3K27me3)deposition and glucose-mediated gene repression.Moreover,CLF and SWN affect the recruitment of HXK1 to its target chromatin.These findings support a model in which HXK1 and epigenetic modifiers form a nuclear complex to cooperatively mediate glucose signaling,thereby affecting the histone modification and expression of glucoseregulated genes in plants.

关键词： Arabidopsis thaliana glucose sensor hexokinase histone methylation transcriptional regulation

Advances on ultra-sensitive electrospun nanostructured electrochemical and colori metric sensors for diabetes mellitus detection

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Nano Materials Science 2021年第4期3卷 321-343页

作者： Mohamed Hasaan Hussain Lim Ping Fook Maria Kana Sanira Putri Huey Ling Tan Noor Fitrah Abu Bakar Norbert Radacsi School of Chemical Bngineering College of Engineering University Teknologi MARA 40450 Shah AlamSelangorMalaysia School of Engineering Institute for Materials and ProcessesThe University of EdinburghRobert Stevenson RoadEdinburghEH93FBUnited Kingdom

Recent developments in the biochemical and medicinal industries have been heavily focused on producing affordable glucose biosensors due to the condi nuous annual increase of diabetic patients worldwide.The devel-opment of a fast,accurate,and reliable glucose sensor will increase confidence in controlling di abetes mellitus and its assoclated health complications among the diabetic community.Electraspinning is a versatile method that can produce complex nanofbrous assemblies with attractiwe and functional characteristics from varlous polymers.Electrospun nanofibers demonstrated high efficiency in the immobilization of biological molecules,which can improve the sensing performance further.Integr ation of polymer electrospun nanofibers with metal nanoparticles,metal oxde or transition metal in producing nanobiocomposites is also a highly popul ar approach in the past few years.This report presents the current progress and research trends of the technique,focusing on varous ma-terials and fabrication strategies used to produce biosensing interfaces.This helps readers decide the suitable approach in designing highly sensitive,selective,fast,and inexpensive glucose sensors.

关键词： glucose sensor Electrospinning Nanofiber Electrochemical sensing Colorimetric sensing

An integrated flexible and reusable graphene field effect transistor nanosensor for monitoring glucose

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Journal of Materiomics 2020年第2期6卷 308-314页

作者： Cong Huang Zhuang Hao Tianxu Qi Yunlu Pan Xuezeng Zhao Key Laboratory of Micro-systems and Micro-structures Manufacturing of Ministry of Education Harbin Institute of TechnologyHarbin150001HeilongjiangChina School of Mechatronics Engineering Harbin Institute of TechnologyHarbin150001HeilongjiangChina School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin150001HeilongjiangChina

Diabetes is a chronic metabolic disease that has effect on blood sugar level and affects millions of people.We present an integrated flexible and reusable graphene-based field effect transistor(GFET)nanosensor for the detection of glucose using pyrene-1-boronic acid(PBA)as the receptor.The nanosensor fabricated on the polyimide performs GFET-based rapid transduction of the glucose-PBA binding,thereby potentially allowing the detection of glucose that are sampled reliably from human bodily fluids(e.g.,sweat)in wearable sensing applications.Due to the reversible binding interaction between PBA and glucose,reusability of our nanosensor can be realized by exposing graphene surface to acidic solution.In characterizing the stability and reusability of the nanosensor for wearable applications,we investigated the effects of substrate bending,multiple reuse and long-time storage on the equilibrium dissociation constant between the PBA and glucose.Results show that bending,multiple reuse(over 10 times)and long-time storage has negligible effect on the sensing performance.The detection of glucose with a limit of detection(LOD)of 0.15 μM and a dynamic range of 0.05-100 μM,which covers the reference scope of physical examination or screening of diabetes.Hence,our flexible GFET nanosensor is promising for wearable and reusable biosensing applications.

关键词： Graphene Flexible Reusable glucose sensor Field-effect transistor

A toolkit of thread-based microfluidics,sensors,and electronics for 3D tissue embedding for medical diagnostics

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Microsystems & Nanoengineering 2016年第1期2卷 163-172页

作者： Pooria Mostafalu Mohsen Akbari Kyle A.Alberti Qiaobing Xu Ali Khademhosseini Sameer R.Sonkusale Nano Lab Department of Electrical and Computer EngineeringTufts UniversityMedfordMA 02155USA Biomaterials Innovation Research Center Division of Biomedical EngineeringDepartment of MedicineBrigham and Women’s HospitalHarvard Medical SchoolCambridgeMA 02139USA Harvard-MIT Division of Health Sciences and Technology Massachusetts Institute of TechnologyCambridgeMA 02139USA Wyss Institute for Biologically Inspired Engineering Harvard UniversityBostonMA 02115USA Laboratory for Innovation in MicroEngineering(LiME) Department of Mechanical EngineeringUniversity of VictoriaVictoriaBC V8P 2C5USA Department of Biomedical Engineering Tufts UniversityMedfordMA 02155USA Department of Physics King Abdulaziz UniversityJeddah 21589Saudi Arabia

Threads,traditionally used in the apparel industry,have recently emerged as a promising material for the creation of tissue constructs and biomedical implants for organ replacement and repair.The wicking property and flexibility of threads also make them promising candidates for the creation of three-dimensional(3D)microfluidic circuits.In this paper,we report on thread-based microfluidic networks that interface intimately with biological tissues in three dimensions.We have also developed a suite of physical and chemical sensors integrated with microfluidic networks to monitor physiochemical tissue properties,all made from thread,for direct integration with tissues toward the realization of a thread-based diagnostic device(TDD)platform.The physical and chemical sensors are fabricated from nanomaterial-infused conductive threads and are connected to electronic circuitry using thread-based flexible interconnects for readout,signal conditioning,and wireless transmission.To demonstrate the suite of integrated sensors,we utilized TDD platforms to measure strain,as well as gastric and subcutaneous pH in vitro and in vivo.

关键词： thread diagnostics 3D microfluidics implantable devices wearable devices flexible sensors flexible electronics pH sensor strain sensor glucose sensor

Cu(TCNQ) nanorod arrays: efficient non-noble-metal electrocatalysts for non-enzymatic glucose sensing

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Cu(TCNQ) nanorod arrays: efficient non-noble-metal electroca...

Facile Synthesis of Au/Ni(OH)2 Nanocomposites and Its Application in Nonenzymatic glucose Electrochemical Sensing

中国化学会第十三届全国分析化学年会

作者： Wenbo Lu Xiufeng Wu Qiangqiang Niu Cancan Bao Key Laboratory of Magnetic Molecules and Magnetic Information Materials Ministry of Education Shanxi Normal University School of Chemistry and Material Science Shanxi Normal University

Non-enzymatic electrode material is extremely significant in the construction of enhanced electrochemical sensor. It is highly attractive to construct stable enzyme-free glucose sensors based on three-dimensional nanoarrays. In this communication, Cu(TCNQ) nanorod array on Cu foam(Cu(TCNQ) NA/CF) is proposed as an efficient catalyst for electrochemical glucose oxidation in alkaline conditions.[1] When Cu(TCNQ) NA/CF was used as the enzyme-free sensory of glucose, this sensor shows the response time within 3 s, a wide detection linear in the range of 0.001-10.0 mM, the minimum limit of detection even as low as 10 nM(S/N=3), and a high sensitivity of 26987 μA mM cm, respectively. Moreover, this sensor also possesses long-term stability, high selectivity, and reproducibility, and actual application for fresh human serum sample analysis is also successfully accepted.

关键词： Cu（TCNQ） nanorod array electrochemical glucose sensor

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Facile Synthesis of Au/Ni(OH)2 Nanocomposites and Its Applic...