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Nanograting-Based Dynamic Structural Colors Using Heterogeneous Materials

NANO-MICRO LETTERS 2025年第1期17卷 1-14页

作者： Wang, Jingang Yu, Haibo Zheng, Jianchen Zhang, Yuzhao Guo, Hongji Qiu, Ye Wang, Xiaoduo Yang, Yongliang liu, lianqing Chinese Acad Sci Shenyang Inst Automat State Key Lab Robot Shenyang 110016 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China

A 2.5-dimensional dynamic structural color based on nanogratings of heterogeneous materials was proposed by interweaving a pH-responsive hydrogel with IP-L *** nanogrid structures exhibit brilliant tuneable structural color, high sensitivity, and ultrafast recovery speeds in response to *** 4D printing-based grayscale design approach was proposed for the patterned encoding and array printing of dynamic structural colors, promoting their application in patterned printing, information encryption, and microfluidic chip sensing. Dynamic structural colors can change in response to different environmental stimuli. This ability remains effective even when the size of the species responsible for the structural color is reduced to a few micrometers, providing a promising sensing mechanism for solving microenvironmental sensing problems in micro-robotics and microfluidics. However, the lack of dynamic structural colors that can encode rapidly, easily integrate, and accurately reflect changes in physical quantities hinders their use in microscale sensing applications. Herein, we present a 2.5-dimensional dynamic structural color based on nanogratings of heterogeneous materials, which were obtained by interweaving a pH-responsive hydrogel with an IP-L photoresist. Transverse gratings printed with pH-responsive hydrogels elongated the period of longitudinal grating in the swollen state, resulting in pH-tuned structural colors at a 45 degrees incidence. Moreover, the patterned encoding and array printing of dynamic structural colors were achieved using grayscale stripe images to accurately encode the periods and heights of the nanogrid structures. Overall, dynamic structural color networks exhibit promising potential for applications in information encryption and in situ sensing for microfluidic chips.

关键词： Dynamic structural colors Four-dimensional printing pH-responsive Nanogrid Heterogeneous materials

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FluidFM for single-cell biophysics

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Nano Research 2022年第2期15卷 773-786页

作者： Mi Li lianqing liu Tomaso Zambelli Laboratory of Biosensors and Bioelectronics Institute for Biomedical EngineeringETH ZurichZurich 8092Switzerland State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110016China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang 110169China

Fluidic force microscopy(FluidFM),which combines atomic force microscopy(AFM)with microchanneled cantilevers connected to a pressure controller,Is a technique allowing the realization of force-sensitive nanopipette under aqueous *** has unique advantages in simultaneous three-dimensional manipulations and mechanical measurements of biological specimens at the micro-/*** the past decade,FluidFM has shown its potential in biophysical assays particularly in the investigations at single-cell level,offering novel possibilities for discovering the underlying mechanisms guiding life ***,we review the utilization of FluidFM to address biomechanical and biophysical issues in the life ***,the fundamentals of FluidFM are ***,the applications of FluidFM for biophysics at single-cell level are surveyed from several facets,including single-cell manipulations,single-cell force spectroscopy,and single-cell ***,the challenges and perspectives for future progressions are provided.

关键词： atomic force microscopy fluidic force microscopy single-cell manipulation single-cell force spectroscopy single-cell electrophysiology

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Advances in atomic force microscopy for single-cell analysis

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Nano Research 2019年第4期12卷 703-718页

作者： Mi Li Ning Xi Yuechao Wang lianqing liu State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of Sciences Shenyang 110016 China Department of Industrial and Manufacturing Systems Engineering The University of Hong Kong Hong Kong 999077 China

Single-cell analysis has been considered as a promising way to uncover the underlying mechanisms guiding the mysteries of life activities, which con siderably complements traditio nal en semble assays and yields novel in sights into cell biology. The adve nt of atomic force microscopy (AFM) provides a potent tool for investigati ng the structures and properties of n ative biological samples at the micro/na no scale un der near-physiological conditions, which promotes the studies of single-cell behaviors. In the past decades, AFM has achieved great success in single-cell observation and manipulation for biomedical applications, demonstrating the excellent capabilities of AFM in addressing biological issues at the single-cell level with unprecedented spatiotemporal resolution. In this article, we review the recent advances in single-cell analysis that has been made with the utilization of AFM, and provide perspectives for future progression.

关键词： atomic force microscopy single-cell analysis cellular morphology cellular mechanics cellular manipulation

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Atomic force microscopy studies on cellular elastic and viscoelastic properties

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Science China(Life Sciences) 2018年第1期61卷 57-67页

作者： Mi Li lianqing liu Ning Xi Yuechao Wang State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 China Department of Industrial and Manufacturing Systems Engineering The University of Hong Kong Hong Kong China

In this work, a method based on atomic force microscopy (AFM) approach-reside-retract experiments was established to simultaneously quantify the elastic and viscoelastic properties of single cells. First, the elastic and viscoelastic properties of normal breast cells and cancerous breast cells were measured, showing significant differences in Young’s modulus and relaxation times between normal and cancerous breast cells. Remarkable differences in cellular topography between normal and cancerous breast cells were also revealed by AFM imaging. Next, the elastic and viscoelasitc properties of three other types of cell lines and primary normal B lymphocytes were measured; results demonstrated the potential of cellular viscoelastic properties in complementing cellular Young’s modulus for discerning different states of cells. This research provides a novel way to quantify the mechanical properties of cells by AFM, which allows investigation of the biomechanical behaviors of single cells from multiple aspects.

关键词： atomic force microscopy cell mechanical properties viscoelastic properties Young's modulus relaxation time

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Fabrication and characteristic detection of graphene nanoelectrodes

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Science China(Technological Sciences) 2014年第10期57卷 1950-1955页

作者： XIE ShuangXi liu ZengLei JIAO NianDong TUNG Steve liu lianqing State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences University of Chinese Academy of Sciences Department of Mechanical Engineering University of Arkansas

Graphene has the advantages of high electrical conductivity,high heat conductivity,and low noise,which makes it a potential option for integrated circuits interconnection and *** this paper,we present a novel fabrication method for graphene nanoeletrodes with ***,graphene grown by chemical vapor deposition(CVD)is assembled to a chip with ***,an atomic force microscopy(AFM)based mechanical cutting method is developed to cut the graphene into nanoribbons and nanoeletrodes with *** the electronic property of a single nanodot is characterized using the garphene nanoelectrodes,demonstrating the effectiveness of the graphene *** fabricated graphene nanoeletrode pairs can be used as probes to detect single molecule in micro-environment,and show an attractive prospect for future molecular electronics applications.

关键词： atomic force microscopy graphene nanoelectrodes nanogap molecular electronics

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Fabrication of Waterproof Artificial Compound Eyes with Variable Field of View Based on the Bioinspiration from Natural Hierarchical Micro–Nanostructures

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Nano-Micro Letters 2020年第12期12卷 13-28页

作者： Peilin Zhou Haibo Yu Ya Zhong Wuhao Zou Zhidong Wang lianqing liu State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110016People’s Republic of China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang 110169People’s Republic of China University of Chinese Academy of Sciences Beijing 100049People’s Republic of China Department of Advanced Robotics Chiba Institute of TechnologyChiba 275‑0016Japan

Planar and curved microlens arrays(MLAs)are the key components of miniaturized microoptical *** order to meet the requirements for advanced and multipurpose applications in microoptical field,a simple manufacturing method is urgently required for fabricating MLAs with unique properties,such as waterproofness and variable field-of-view(FOV)*** properties are beneficial for the production of advanced artificial compound eyes for the significant applications in complex microcavity environments with high humidity,for instance,miniature medical ***,the simple and effective fabrication of advanced artificial compound eyes still presents significant *** this paper,bioinspired by the natural superhydrophobic surface of lotus leaf,we propose a novel method for the fabrication of waterproof artificial compound *** jet printing was used to fabricate hierarchical MLAs and nanolens arrays(NLAs)on polydimethylsiloxane *** flexible film of MLAs hybridized with NLAs exhibited excellent superhydrophobic property with a water contact angle of 158°.The MLAs film was deformed using a microfluidics chip to create artificial compound eyes with variable FOV,which ranged from 0°to 160°.

关键词： Bioinspired Hierarchical MLAs and NLAs Waterproof artificial compound eyes E-jet printing Microfluidics chip

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Highly Ordered Superlattices from Self-assembly of Fe3O4 Nanocrystals

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Chemical Research in Chinese Universities 2014年第3期30卷 343-346页

作者： ZHANG Ran TIAN Ye LU Chao liu lianqing liu Xiaoming State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Enginneering Jilin University Changchun 130012 P. R. China College of Electrical and Electronic Engineering Changchun University of Technology Changchun 130012 P. R. China College of Chemistry Jilin University Changchun 130012 P. R. China State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 P. R. China

The nano materials often exhibit very interesting electrical, optical, magnetic, and chemical properties, which can not be achieved by their bulk counterparts. The development of uniform nanometer sized particles has been intensively pursued because of their technological and fundamental scientific importance. It is significant that nanostructured materials can be controllably assembled into the required geometry onto substrates, becoming the basis of the next generation of components and devices. The development of new methods and strategies for organizing the nanoparticle basic building blocks into the desired structures is required. Superlattices made from these building blocks give us the opportunity to study not only the properties of the individual building blocks, but also collective effects. The superparamagnetic iron oxide nanocrystals（NCs） have been used in the fields of bio-medicine, ferrofluids, refrigeration system, catalysis,

关键词： Magnetic nanocrystal Self-assembly Highly ordered superlattice Superparamagnetic property Monodisperse

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Development of micro-and nanorobotics: A review

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Science China(Technological Sciences) 2019年第1期62卷 1-20页

作者： YANG Jia ZHANG Chuang WANG XiaoDong WANG WenXue XI Ning liu lianqing State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences University of Chinese Academy of Sciences Emerging Technologies Institute Department of Industrial & Manufacturing Systems Engineering University of Hong Kong

Micro-and nanorobotic is an emerging field of research arising from the cross-fusion of micro/nano technology and robotics and has become an important part of robotics. Micro-and nanorobots have the advantages of small size, low weight, large thrust-toweight ratio, high flexibility, and high sensitivity. Due to the characteristics distinguishing from macroscopic robots, micro-and nanorobots have stimulated the research interest of the scientific community and opened up numerous application fields such as drug delivery and disease diagnosis. In the past 30 years, research on micro-and nanorobots has made considerable *** article provides a comprehensive overview of the development of these robots. First, the application of the robots is reviewed. Then, the key components of the robots are discussed separately, covering their actuation, design, fabrication and control. In addition, from the perspectives of intelligence and sensing, clinical applications, materials and performance, the challenges that may be encountered in the development of such robots in the future are discussed. Finally, the entire article is summarized, and concepts for future micro-and nanorobots are described.

关键词： micro-and nanorobots magnetic actuation manipulation biohybrid robot

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Research progress in quantifying the mechanical properties of single living cells using atomic force microscopy

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Chinese Science Bulletin 2014年第31期59卷 4020-4029页

作者： Mi Li lianqing liu Ning Xi Yuechao Wang State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of Sciences University of Chinese Academy of Sciences Department of Mechanical and Biomedical Engineering City University of Hong Kong

The advent of atomic force microscopy(AFM)provides a powerful tool for investigating the behaviors of single living cells under near physiological *** acquiring the images of cellular ultra-microstructures with nanometer resolution,the most remarkable advances are achieved on the use of AFM indenting technique to quantify the mechanical properties of single living *** indenting single living cells with AFM tip,we can obtain the mechanical properties of cells and monitor their dynamic changes during the biological processes(e.g.,after the stimulation of drugs).AFM indentation-based mechanical analysis of single cells provides a novel approach to characterize the behaviors of cells from the perspective of biomechanics,considerably complementing the traditional biological experimental ***,AFM indentation technique has been widely used in the life sciences,yielding a large amount of novel information that is meaningful to our understanding of the underlying mechanisms that govern the cellular biological ***,based on the authors’own researches on AFM measurement of cellular mechanical properties,the principle and method of AFM indentation technique was presented,the recent progress of measuring the cellular mechanical properties using AFM was summarized,and the challenges of AFM single-cell nanomechanical analysis were discussed.

关键词：单个活细胞原子力显微镜机械性能 AFM 生物过程纳米分辨率生物学功能生理条件

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The influence of probe lift-up height on CNT electrical properties measurement under EFM DC mode

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Chinese Science Bulletin 2014年第14期59卷 1591-1596页

作者： Zengxu Zhao Xiaojun Tian Jie liu Zaili Dong lianqing liu State Key Laboratory of Robotics Shenyang Institute of Automation (SIA)Chinese Academy of Sciences University of Chinese Academy of Sciences

Nowadays,one of the bottlenecks which hinder the development and application of carbon nanotube(CNT)nano device is that no pure semiconducting CNT(s-CNT)or metallic CNT(m-CNT)can be obtained,and for solving this problem scientists proposed some methods on preparation or separation,but all the results still should be detected and feedback to the process for further improving the preparation and separation ***,it is very important to measure and distinguish the electrical properties of *** that,scientists proposed a method to measure CNT electrical properties based on DC electrostatic force microscope(EFM)mode,which distinguishes m-CNT from s-CNT according to different scan line shape to CNT with different electrical ***,we discovered that the probe lift-up height will seriously affect the shape of the scan line,which makes this method not reliable in distinguishing m-CNT from *** this paper,the authors deeply researched the influence of probe lift-up height and also gave corresponding theoretical analysis and explanation,which will greatly improve the method of detecting CNT electrical properties by EFM.

关键词： CNT EFM 顶升探头测量电学性质半导体碳纳米管 C模式

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