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Dip-Pen Nanolithography(DPN): from Micro/Nano-patterns to Biosensing

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Chemical Research in Chinese Universities 2021年第4期37卷 846-854页

作者： LI Haonan WANG Zhao huo fengwei WANG Shutao CAS Key Laboratory of Bio-inspired Materials and Interfacial Science CAS Center for Excellence in NanoscienceTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing100190P.R.China University of Chinese Academy of Sciences Beijing100049P.R.China Key Laboratory of Flexible Electronics(KLOFE) Institute of Advanced Materials(IAM)Nanjing Tech UniversityNanjing211816P.R.China

Dip-pen nanolithography is an emerging and attractive surface modification technique that has the capacity to directly and controllably write micro/nano-array patterns on diverse *** superior throughput,resolution,and registration enable DPN an outstanding candidate for biological detection from the molecular level to the cellular ***,we overview the technological evolution of DPN in terms of its advanced derivatives and DPN-enabled versatile sensing patterns featuring multiple compositions and structures for *** from uniform,reproducible,and large-area array patterns,DPN-based biosensors have shown high sensitivity,excellent selectivity,and fast response in target analyte detection and specific cellular *** anticipate that DPN-based technologies could offer great potential opportunities to fabricate multiplexed,programmable,and commercial array-based sensing biochips.

关键词： Dip-pen nanolithography Micro/nano-array pattern Biosensing

Special Column on Nanoparticles/MOFs Synergistic Catalysis

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Chemical Research in Chinese Universities 2022年第6期38卷 I0001-I0002页

作者： OUYANG Junchen ZHANG Suoying huo fengwei Nanjing Tech University Nanjing 211816P.R.China

Synergistic catalysis,which utilizes at least two different catalysts or a multi-component catalyst to facilitatechemical reactions,has been regarded as a classic strategy for catalyst design and catalytic *** the explosive development of new materials in the last two decades,new synergistic catalysts with previously unattainable catalytic performance and synergistic effects have sprung up.

关键词： synergistic catalyst utilize

Implementation strategies for high accuracy grinding of hydrodynamic seal ring with wavy face for reactor coolant pumps

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Science China(Technological Sciences) 2013年第10期56卷 2403-2412页

作者： FENG Guang GUO DongMing huo fengwei JIN ZhuJi KANG RenKe Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education Dalian University of Technology

Large size mechanical seals are one of the most important components used in reactor coolant ***,the hydrodynamic seal rings with wavy face are difficult to machine due to their high hardness and high form accuracy *** order to solve this difficult problem,a novel four-axis linkage grinding method using a cup wheel to process the hydrodynamic seal rings by line contact was proposed.A preliminary study indicates that the form error of the ground seal ring surface is extremely sensitive to different linkage relations of the four *** taking the center height of the cup wheel and the laws of motion along the X-axis,Z-axis,B-axis and C-axis as control variables,their effects on the principle form error of the ground surface are *** implementation strategies are proposed to reach lower principle form *** is found that the minimal principle form error is only 9.64 nm and hence its influence on the ground seal ring shape can be neglected in designing an ultra-precision grinding *** addition,the results indicate that the position accuracy of the X-axis at the microscale is acceptable no matter which implementation strategy is *** study is expected to serve as a theoretical basis for design and development of the four-axis ultra-precision grinding machine.

关键词： reactor coolant pump hydrodynamic seal ring wavy face grinding cup wheel high accuracy

Emerging porous nanosheets:From fundamental synthesis to promising applications

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Nano Research 2021年第1期14卷 1-28页

作者： Yun Fan Jia Zhang Yu Shen Bing Zheng Weina Zhang fengwei huo Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Nanjing Tech University(NattjingTech)Nanjing 211816China

Metal-organic framework(MOF)nanosheets and covalent organic framework(COF)nanosheets as emerging porous materials nanosheets have captured increasing attention owing to their attractive properties originating from the advantages of large lateral size,ultrathin thickness,tailorable physiochemical environment,flexibility and highly accessible active sites on surface,and the applications of them have been explored in a wide range of *** MOF and COF nanosheets own many similar properties,their applications in various fields show significant differences,probably due to their different compositions and bonding ***,we summarize the recent progress of MOF and COF nanosheets by comparative analysis on their advantages and limitations in synthesis and applications,providing a more profound and full-scale perspective for researchers or beginners to understand this ***,the categories of preparation methods of MOF and COF nanosheets are firstly discussed,including top-down and bottom-up ***,the applications of MOF and COF nanosheets for separation,catalysis,sensing and energy storage are ***,based on current achievements,we put forward our personal insights into the challenges and outlooks on the synthesis,characterizations,and promising applications for future research of MOF and COF nanosheets.

关键词： metal-organic framework(MOF)nanosheets covalent organic framework(COF)nanosh eets top-down methods bottom-up methods two-dimensional(2D)nanomaterials

Crystalline framework nanosheets as platforms for functional materials

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International Journal of Minerals,Metallurgy and Materials 2023年第10期30卷 1986-2005页

作者： Yun Fan Cheng Chen Siyao Zhang Suoying Zhang fengwei huo Weina Zhang Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Nanjing Tech UniversityNanjing 211816China

The integration of organic and inorganic materials has been widely used in various applications to generate novel functional nanomaterials characterized by unique *** crystalline framework nanosheets and their synergistic effects have been studied recently for possessing the advantages of functional species as well as crystalline framework ***,we have focused on the preparation methods and applications of functional crystalline framework nanosheets in this *** introduced crystalline framework nanosheets and discussed the importance of integrating functional species with nanosheets to form functional crystalline framework ***,two aspects of the preparation methods of functional crystalline framework nanosheets were reviewed:in situ synthesis and post-synthesis ***,we discussed the properties of the crystalline framework nanosheets combined with various functional species and summarized their applications in catalysis,sensing,separation,and energy ***,we have shared our insights on the challenges of functional crystalline framework nanosheets,hoping to contribute to the knowledge base for optimizing the preparation methods,expanding categories,improving stability,and exploring potential applications.

关键词： functional materials crystalline framework nanosheets in situ synthesis post-synthesis modification unique properties

Encapsulation of metal layers within metal-organic frameworks as hybrid thin films for selective catalysis

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Nano Research 2016年第1期9卷 158-164页

作者： Zhiling Xu Weina Zhang Jiena Weng Wei Huang Danbi Tian fengwei huo Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (Nanjing Tech) 30 South Puzhu Road Nanjing 211816 China College of Science Nanjing Tech University 30 South Puzhu Road Nanjing 211816 China

A facile encapsulation strategy for the preparation of metal layer/metal-organic framework （metal/MOF） hybrid thin films, by alternately growing MOF thin films and sputter-coating metal layers, is reported. The controlled species of the MOF thin films and metal layers, as well as the designed thickness of MOF thin films, endow the resulting hybrid thin films with improved functional and design flexibility. Importantly, the metaL/MOF hybrid thin films, with well-defined sandwich structures, exhibit excellent selective catalytic activity, derived from MOFs acting as molecular sieves and the metal layers providing active sites.

关键词： metal-organic frameworks catalysis hybrid thin films metal layers composition

A review of sampling,energy supply and intelligent monitoring for long-term sweat sensors

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npj Flexible Electronics 2022年第1期6卷 308-320页

作者： Pufan Yang Gaofeng Wei Ang Liu fengwei huo Zhinan Zhang Stake Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong UniversityShanghai 200240China Naval Medical Department Naval Medical UniversityShanghai 200433China School of Mechanical and Manufacturing Engineering University of New South WalesSydneyNSW 2052Australia Key Laboratory of Flexible Electronics&Institute of Advanced Materials Nanjing Tech UniversityNanjing 211816China

Sweat is a biofluid with rich information that can reflect an individual’s state of health or *** the real-time in situ sweat sensors lack the ability of long-term *** this background,this article provides a holistic review on the necessary process and methods for sweat sensing,including sweat collection,composition analysis,energy supply,and data *** impacts of the environment in stimulating sweat production,providing energy supply,and intelligent health monitoring are *** on the review of previous endeavors,the future development in material,structure and artificial intelligence application of long-term sweat monitoring is envisioned.

关键词： artificial individual processing.

Polymerization-Induced Self-Assembly for Efficient Fabrication of Biomedical Nanoplatforms

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Research 2023年第4期2023卷 631-655页

作者： Xiaopeng Zhao Changrui Sun Fei Xiong Ting Wang Sheng Li fengwei huo Xikuang Yao School of Flexible Electronics(Future Technologies)and Institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211816P.R.China

Amphiphilic copolymers can self-assemble into nano-objects in aqueous ***,the selfassembly process is usually performed in a diluted solution(<1 wt%),which greatly limits scale-up production and further biomedical *** recent development of controlled polymerization techniques,polymerization-induced self-assembly(PISA)has emerged as an efficient approach for facile fabrication of nano-sized structures with a high concentration as high as 50 wt%.In this review,after the introduction,various polymerization method-mediated PISAs that include nitroxide-mediated polymerization-mediated PISA(NMP-PISA),reversible addition-fragmentation chain transfer polymerizationmediated PISA(RAFT-PISA),atom transfer radical polymerization-mediated PISA(ATRP-PISA),and ringopening polymerization-mediated PISA(ROP-PISA)are discussed ***,recent biomedical applications of PISA are illustrated from the following aspects,i.e.,bioimaging,disease treatment,biocatalysis,and *** the end,current achievements and future perspectives of PISA are *** is envisioned that PISA strategy can bring great chance for future design and construction of functional nano-vehicles.

关键词： solution polymerization diluted

Selenium-functionalized metal-organic frameworks as enzyme mimics

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Nano Research 2018年第10期11卷 5761-5768页

作者： Weiqiang Zhou Hongfeng Li Bin Xia Wenlan Ji Shaobo Ji Weina Zhang Wei Huang fengwei huo Huaping Xu Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (Nanjing Tech) Nanjing 211816 China Key Laboratory of Organic Optoelectronics and Molecular Engineering Department of Chemistry Tsinghua University Beijing 100084 China

The development of artificial enzyme mimics has been rapidly growing in recent years, and it is attracting increasing attention owing to their remarkable advantages over natural enzymes. Herein, we developed a general and facile method to fabricate efficient glutathione peroxidase （GPx） mimics by grafting selenium-containing molecules （phenylselenylbromide, PhSeBr） to a Zr（W）-based UiO-66-NH2 framework. In the presence of glutathione （GSH） serving as substrate, the fabricated UiO-66-Se catalysts can catalyze the reduction of hydroperoxides. The as-prepared UiO-66-Se systems show good catalytic activity over three cycles. These high-efficiency GPx mimic metal-organic frameworks （MOFs） are endowed with excellent thermal and structural stability, providing a promising avenue for the development of artificial enzyme mimics.

关键词： metal-organic frameworks nano chemistry selenium chemistry enzyme mimic postsynthetic modification