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Quality Control of Mass-Encoded Nanodevices by Compartmented DNA Origami Frames for Precision information coding and Logic Mapping

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ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 2024年第4期63卷 e202313446-e202313446页

作者： Zhang, Xue Dong, Yuxiang Wang, Yong Zhang, Zhenzhen Zhang, Xuemeng Zhu, Jun-Jie Tian, Ye Min, Qianhao Nanjing Univ Coll Engn & Appl Sci Chem & Biomed Innovat Ctr Sch Chem & Chem EngnState Key Lab Analyt Chem Lif Nanjing 210023 Peoples R China Suzhou Univ Sci & Technol Sch Mat Sci & Engn Suzhou 215009 Peoples R China

Encoded nanostructures afford an ideal platform carrying multi-channel signal components for multiplexed assay and information security. However, with the demand on exclusivity and reproducibility of coding signals, precise control on the structure and composition of nanomaterials featuring fully distinguishable signals remains challenging. By using the multiplexing capability of mass spectrometry (MS) and spatial addressability of DNA origami nanostructures, we herein propose a quality control methodology for constructing mass-encoded nanodevices (namely MNTs-TDOFs) in the scaffold of compartmented tetrahedral DNA origami frames (TDOFs), in which the arrangement and stoichiometry of four types of mass nanotags (MNTs) can be finely regulated and customized to generate characteristic MS patterns. The programmability of combinatorial MNTs and orthogonality of individual compartments allows further evolution of MNTs-TDOFs to static tagging agents and dynamic nanoprobes for labeling and sensing of multiple targets. More importantly, structure control at single TDOF level ensures the constancy of prescribed MS outputs, by which a high-capacity coding system was established for secure information encryption and decryption. In addition to the multiplexed outputs in parallel, the nanodevices could also map logic circuits with interconnected complexity and logic events of c-Met recognition and dimerization on cell surface for signaling regulation by MS interrogation. We present mass-encoded nanodevices in which the arrangement and stoichiometry of mass nanotags are prescribed in compartmented DNA origami frames to generate characteristic mass spectra with multiple well-defined signal intensities. The exclusivity of mass spectral patterns and orthogonality of multiplexed ion signal responses allow precise information coding and logic ***

关键词： DNA Structures information coding Logic Events Mass Spectrometry Multiplexed Output

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Photo-induced multi-color fluorescent hydrogels for optical information coding and encryption

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EUROPEAN POLYMER JOURNAL 2023年第1期198卷

作者： Jia, Hong Chen, Zihao Liu, Zihan Yang, Shuangye Lu, Yiming Wei, Jie Beijing Engn Res Ctr Synth & Applicat Waterborne P Beijing 100029 Peoples R China Beijing Univ Chem Technol Coll Mat Sci & Engn Beijing 100029 Peoples R China

In this study, we proposed a method to prepare multi-color fluorescent hydrogels with polyvinyl alcohol (PVA) as the cross-linking network and 7-(6-carboxylpentoxy)-4-methylcoumarin (CPMC), N-ethoxyhexanoate-3,3dimethyl-6-nitro-indolinspiropyran (SPCOOH) and 2 & PRIME;,7 & PRIME;-dichlorofluorescein (DCF) were introduced to the system. Due to the hydroxyl group in PVA can form a reversible borate bond with borax, the hydrogel could be combined with each other through this chemical bond, thus hydrogels possess reversible cross-linking property and programmable property. The introduction of CPMC, SPCOOH and DCF into the hydrogel could give the hydrogel different photo-response properties. Under UV light irradiation, PVA-CPMC, PVA-CPMC/DCF, PVASPCOOH and PVA/DCF hydrogels could emit blue, cyan, pink purple and green fluorescence respectively. In addition, PVA/DCF and PVA-CPMC/DCF hydrogels could emit green fluorescence under 505 nm light irradiation. Based on the various properties of hydrogels, we respectively demonstrated the application of hydrogels in the fields of two-dimensional information encryption, three-dimensional information encryption, threedimensional information coding and anti-counterfeiting, which can achieve the expected results. Therefore, multi-color fluorescent hydrogels may have potential applications in information encryption, information coding, flexible display and other fields.

关键词： Hydrogel Photo-response Fluorescence information encryption information coding

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Programmable photo-responsive self-healing hydrogels for optical information coding and encryption

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EUROPEAN POLYMER JOURNAL 2022年 166卷 111025-111025页

作者： Wang, Yufei Chen, Zihao Li, Nanshu Zhang, Hanbing Wei, Jie Beijing Engn Res Ctr Synth & Applicat Waterborne Beijing 100029 Peoples R China Key Lab Carbon Fibers & Funct Polymers Minist Educ Beijing 100029 Peoples R China Beijing Univ Chem Technol Coll Mat Sci & Engn Beijing 100029 Peoples R China

In this study, we proposed programmable photo-responsive self-healing hydrogels containing polyacrylamide (PAM), polyacrylic acid (PAA), poly[2-(dimethylamino) ethyl methacrylate] (PDMAEMA), ammonium molybdate (Mo7), and 7-2(acryloyl hydroxypropyl)-4-methyl-coumarin (AHPMC). Because of the electrostatic interaction of PAA and PDMAEMA, the hydrogel demonstrates good self-healing properties. Moreover, we introduced Mo7 and coumarin derivative in the hydrogel, respectively, which endows the hydrogel photo-responsive properties. Under the control of UV light, PAM-AD/Mo7 hydrogel with photochromic behavior could turn atrovirens, and PAM-AD/AC hydrogel with photoluminescent properties could emit blue fluorescence. In contrast, PAM-AD hydrogel possesses no photo-responsive behavior. Based on the self-healing and photoresponsive properties of the hydrogels, the three hydrogel blocks could be programmed and healed as a whole combination. In addition, we demonstrated the application of the hydrogel in optical information coding and encryption, which possesses good information coding and encryption effect. Therefore, the photo-responsive selfhealing hydrogel may have potential applications in flexible information display and encryption fields.

关键词： Hydrogel Self-healing Photo -response Fluorescence information coding Encryption

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Ultraviolet-magnetic response multicolored janus colloidal photonic crystal beads for information coding

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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 2022年 652卷

作者： Li, Nanshu Chen, Zihao Wang, Yufei Chen, Yiping Yang, Shuangye Hu, Jiashuo Wei, Jie Minist Educ Key Lab Carbon Fibers & Funct Polymers Beijing 100029 Peoples R China Beijing Engn Res Ctr Synth & Applicat Waterborne P Beijing 100029 Peoples R China Beijing Univ Chem Technol Coll Mat Sci & Engn Beijing 100029 Peoples R China

We report a new kind of ultraviolet (UV)-magnetic response Janus colloidal photonic crystal (CPC) beads for information coding. The Janus beads made up of fluorescent CPCs and Fe3O4 nanoparticles show different colors under visible light, UV light and magnetic stimulation. In the concrete scheme, monodisperse colloidal particles with and without fluorescent molecule SPMA were prepared by semi-continuous emulsion polymerization. Then colloidal particles and Fe3O4 nanoparticles were paired as precursors to prepare Janus beads by the droplet template method. During the slow self-assembly process, Fe3O4 nanoparticles were deposited on the bottom and colloidal particles filled the other parts of the beads so that a Janus structure formed. Therefore, the upper surface of Janus beads appears structural color and the lower surface appears black. The variation of Fe content in different hemispheres allows the controllable magnetic response to reverse the beads. The presence of fluorescent molecule SPMA makes fluorescent Janus beads (FJBs) emit fluorescence under UV light. According to design, an array in a particular arrangement of Janus beads can realize reversible changes between three different optical information. Furthermore, the binary cipher was combined with Janus beads to design and fabricate an optical encoding array, revealing an important application in information coding.

关键词： Colloidal photonic crystals Janus bead Structural color Magnetic response Ultraviolet fluorescence information coding

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Research on Interactive Performance Optimization Strategy of Complex Systems Based on information coding

Research on Interactive Performance Optimization Strategy of...

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10th International Conference on Applied Human Factors and Ergonomics (AHFE) / AHFE International Conference on Neuroergonomics and Cognitive Engineering / AHFE International Conference on Industrial Cognitive Ergonomics and Engineering Psychology

作者： Qin, Tian Wang, Siyi Nanjing Univ Sci & Technol Sch Design Art & Media Nanjing 210094 Jiangsu Peoples R China Southeast Univ Sch Mech Engn Nanjing 211189 Jiangsu Peoples R China

ISBN: (纸本)9783030204730;9783030204723

In order to improve the interactive performance of the complex system, the usability evaluation is carried out. In this paper, the usability of the existing complex system interface was evaluated, and the optimization strategy was studied based on the information encoding. The results were analyzed through eye movement experiments. The performance of each task in the information interface after information coding optimization was better than that of the previous interface. It had different degrees of advantages in task completion time and task completion rate. The degree of information coding optimization of the interface was negatively correlated with the task completion time. The degree of optimization of interface information coding is positively correlated with click efficiency. The higher the degree of optimization, the higher the click efficiency.

关键词： information coding Interactive interface Usability assessment

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Quality Control of Mass-Encoded Nanodevices by Compartmented DNA Origami Frames for Precision information coding and Logic Mapping

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Angewandte Chemie 2023年第4期136卷

作者： Xue Zhang Dr. Yuxiang Dong Yong Wang Zhenzhen Zhang Dr. Xuemeng Zhang Prof. Jun-Jie Zhu Prof. Ye Tian Prof. Qianhao Min State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical Engineering College of Engineering and Applied Sciences Chemistry and Biomedicine Innovation Center Nanjing University Nanjing 210023 P. R. China School of Materials Science and Engineering Suzhou University of Science and Technology Suzhou 215009 P. R. China

关键词： DNA Structures information coding Logic Events Mass Spectrometry Multiplexed Output

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A novel human behaviour information coding method based on eye-tracking technology

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TRAITEMENT DU SIGNAL 2017年第3-4期34卷 153-173页

作者： Hu, Tao Lv, Jian Xie, Qingsheng Sun, Hui Yuan, Qingni Guizhou Univ Minist Educ Key Lab Adv Mfg Technol Guiyang 550025 Guizhou Peoples R China

The computer recognition and coding of human motion has great application potentials in intelligent human-computer interaction (HCI) virtual reality and computer vision. The advancement of these fields hinges on the development of computers capable of processing information like the human brain. However, there is little report on computer coding of human motion based on the information processing features of human vision. Therefore, this paper attempts to develop a computer vision information coding model for recognizing human actions in virtual situations. Moreover, human motion was defined in terms of concept, vision and perception, and a visual cognition experiment was performed to explore the influence of different contexts on motion information recognition. The main results are as follows: the fixation duration is nonlinearly correlated with context;interaction occurs between different contexts in the target motion recognition process;the recognition efficiency was higher at the appearance of the target motion with the context (of similar motions) than at that of the target motion with the mixed context. Based on the experimental data, the author designed strategies for visual information feature coding, information classification and information processing. These strategies enable computer vision to recognize and process information under complex background in an accurate and efficient manner. The research findings lay the basis for intelligent HCI and information visualization in virtual environment.

关键词： information identification information coding motion capture fixation duration virtual reality

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Flexible information coding in Human Auditory Cortex during Perception, Imagery, and STM of Complex Sounds

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JOURNAL OF COGNITIVE NEUROSCIENCE 2015年第7期27卷 1322-1333页

作者： Linke, Annika C. Cusack, Rhodri Univ Western Ontario London ON N6A 5B7 Canada MRC Cambridge England

Auditory cortex is the first cortical region of the human brain to process sounds. However, it has recently been shown that its neurons also fire in the absence of direct sensory input, during memory maintenance and imagery. This has commonly been taken to reflect neural coding of the same acoustic information as during the perception of sound. However, the results of the current study suggest that the type of information encoded in auditory cortex is highly flexible. During perception and memory maintenance, neural activity patterns are stimulus specific, reflecting individual sound properties. Auditory imagery of the same sounds evokes similar overall activity in auditory cortex as perception. However, during imagery abstracted, categorical information is encoded in the neural patterns, particularly when individuals are experiencing more vivid imagery. This highlights the necessity to move beyond traditional brain mapping inference in human neuroimaging, which assumes common regional activation implies similar mental representations.

关键词： sensory stimulation Auditory Perception wetware Activity patterns senses Perception Primary Auditory Cortex information coding

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A mechanism for graded, dynamically routable current propagation in pulse-gated synfire chains and implications for information coding

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JOURNAL OF COMPUTATIONAL NEUROSCIENCE 2015年第2期39卷 181-195页

作者： Sornborger, Andrew T. Wang, Zhuo Tao, Louis Univ Calif Davis Dept Math Davis CA 95616 USA Peking Univ Coll Life Sci Ctr Bioinformat Natl Lab Prot Engn & Plant Genet Engn Beijing 100871 Peoples R China Peking Univ Ctr Quantitat Biol Beijing 100871 Peoples R China

Neural oscillations can enhance feature recognition (Azouz and Gray Proceedings of the National Academy of Sciences of the United States of America, 97, 8110-8115 2000), modulate interactions between neurons (Womelsdorf et al. Science, 316, 1609-01612 2007), and improve learning and memory (Markowska et al. The Journal of Neuroscience, 15, 2063-2073 1995). Numerical studies have shown that coherent spiking can give rise to windows in time during which information transfer can be enhanced in neuronal networks (Abeles Israel Journal of Medical Sciences, 18, 83-92 1982;Lisman and Idiart Science, 267, 1512-1515 1995, Salinas and Sejnowski Nature Reviews. Neuroscience, 2, 539-550 2001). Unanswered questions are: 1) What is the transfer mechanism? And 2) how well can a transfer be executed? Here, we present a pulse-based mechanism by which a graded current amplitude may be exactly propagated from one neuronal population to another. The mechanism relies on the downstream gating of mean synaptic current amplitude from one population of neurons to another via a pulse. Because transfer is pulse-based, information may be dynamically routed through a neural circuit with fixed connectivity. We demonstrate the transfer mechanism in a realistic network of spiking neurons and show that it is robust to noise in the form of pulse timing inaccuracies, random synaptic strengths and finite size effects. We also show that the mechanism is structurally robust in that it may be implemented using biologically realistic pulses. The transfer mechanism may be used as a building block for fast, complex information processing in neural circuits. We show that the mechanism naturally leads to a framework wherein neural information coding and processing can be considered as a product of linear maps under the active control of a pulse generator. Distinct control and processing components combine to form the basis for the binding, propagation, and processing of dynamically routed information within n

关键词： Synfire chain information coding information transfer information routing Dynamic functional connectivity

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information coding by Means of Adaptive Controlling Torques

Information Coding by Means of Adaptive Controlling Torques

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16th International Conference on Human-Computer Interaction (HCI)

作者： Winterholler, Johann Boehle, Julian Chmara, Krzysztof Maier, Thomas Univ Stuttgart Inst Engn Design & Ind Design Res D-70174 Stuttgart Germany

ISBN: (纸本)9783319077314;9783319077307

The investigated approach shows that the currently rarely used haptic perception channel can systematically be applied for information transfer. The encoding of information by variable controlling torques and the haptic transmission of information to the user via a central control element can lead to a reduction of visual distraction and cognitive stress in difficult tasks. Furthermore, this approach allows innovative interfaces so that the usability of products can be improved and the operational safety can be increased.

关键词： haptic information coding adaptive control element adaptive controlling torque haptic display human-machine interaction

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