Bioinspired self-assembled colloidal collectives drifting in three dimensions underwater

Science Advances, Journal Year: 2023, Volume and Issue: 9(45)

Published: Nov. 10, 2023

Active matter systems feature a series of unique behaviors, including the emergence collective self-assembly structures and migration. However, realizing entities formed by synthetic active in spaces without wall-bounded support makes it challenging to perform three-dimensional (3D) locomotion dispersion. Inspired migration mechanism plankton, we propose bimodal actuation strategy artificial colloidal systems, i.e., combining magnetic optical fields. The field triggers particles form collective, maintaining numerous colloids as dynamically stable entity. allows collectives generate convective flow through photothermal effect, enabling them use fluidic currents for 3D drifting. can underwater, transit between water-air interface, have controlled motion on water surface. Our study provides insights into designing smart devices materials, offering strategies developing capable controllable movement space.

Language: Английский

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Multi‐dimensional micro/nanorobots with collective behaviors

SmartMat, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 16, 2024

Abstract Recently, the collective behavior of micro/nanorobots has shown unprecedented potential in biomedicine and environmental remediation. Collective can work more efficiently, adaptively, robustly than individual micro/nanorobots. The paradigm needs to be understood different dimensions, including from cluster, planar spatial, mono‐functional multifunctional. In this review, focus will on summarizing achievements control micro/nanorobot swarms recent years an attempt better understand how structure materials individuals should designed, implemented, robots are functionalized cope with practical applications under introduction control. opportunities challenges that faces at stage illustrated provide perspectives for its future development.

Language: Английский

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Magnetic Soft Matter toward Programmable and Multifunctional Miniature Machines

Accounts of Materials Research, Journal Year: 2024, Volume and Issue: 5(2), P. 173 - 183

Published: Jan. 22, 2024

ConspectusMiniature machines that are highly controllable have received widespread attention due to their potential applications in smart medicine and micromanipulation, especially those developed based on soft matter. The inherent compliance of matter can enhance the adaptability miniature a complex working environment or objects being manipulated. Furthermore, with rapid development materials science control technology, emergence various responsive matters has promoted remote even autonomous actuation capabilities as well reconfigurable properties. Despite burgeoning efforts devoted programming precise machines, exploration is still its infancy. Due nonlinearity response active matter, comprehensive understanding modeling deformation needed. Besides, systematic study on-demand material components physical properties at submillimeter, micro-, nanoscale levels also important. Hence, more in-depth research composition, mechanisms, methods needed promote construction novel practical future.Based regulation fields chemical substances, demonstrate shape-morphing without restraint. Among stimulation methods, magnetic strategy possesses outstanding advantages terms safety, controllability, penetration depth, which endow huge fundamental engineering applications. Programmable provides powerful platform explore patterns locomotion behaviors nature. Under action nonuniform torques generated by programmable stimulation, could undergo series morphological transformations. promising solution for developing optimized speed energy density. Therefore, through exquisite assembly structural design, composed compatible many application scenarios, biomedical engineering.In this Account, we provide overview recent significant advancements achieved our group others First, elucidate interaction mechanism between diverse agents available matrices including polymer matrices, liquid non-Newtonian fluids. We then illustrate encoding heterogeneous magnetization profile particle orientation, 3D transformations under (e.g., origami kirigami deformation, surface Gaussian curvature). Next, discussed, focusing devices, flexible electronics. Finally, an outlook prospects opportunities future

Language: Английский

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Methamphetamine Removal from Aquatic Environments by Magnetic Microrobots with Cyclodextrin Chiral Recognition Elements

Small, Journal Year: 2024, Volume and Issue: 20(26)

Published: Jan. 18, 2024

The growing consumption of drugs abuse together with the inefficiency current wastewater treatment plants toward their presence has resulted in an emergent class pollutants. Thus, development alternative approaches to remediate this environmental threat is urgently needed. Microrobots, combining autonomous motion great tunability for specific tasks, have turned into promising candidates take on challenge. Here, hybrid urchin-like hematite (α-Fe

Language: Английский

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Persistent and responsive collective motion with adaptive time delay

Science Advances, Journal Year: 2024, Volume and Issue: 10(14)

Published: April 3, 2024

It is beneficial for collective structures to simultaneously have high persistence environmental noise and responsivity nontrivial external stimuli. However, without the ability differentiate useful information from noise, there always a tradeoff between within structures. To address this, we propose adaptive time delay inspired by behavior observed in school of fish. This strategy tested using particles powered optothermal fields coupled with an optical feedback-control system. By applying proper threshold, experimentally observe enhanced approximately 1.6 times sacrificing persistence. Furthermore, integrate long-distance transportation obstacle-avoidance capabilities prototype swarm microrobots. research demonstrates potential persistence-responsivity lays foundation intelligent micro/nanorobots operating complex environments.

Language: Английский

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Enzymatic Janus Liposome Micromotors

Langmuir, Journal Year: 2023, Volume and Issue: 39(11), P. 4198 - 4206

Published: March 9, 2023

A liposome-based micromotor system that utilizes regional enzymatic conversion and gas generation to achieve directional motion in water is presented. Constituted mainly of a low-melting lipid high-melting together with cholesterol, these liposomes maintain stable Janus configuration at room temperature as result liquid–liquid phase separation. Local placement enzymes such horseradish peroxidase realized via affinity binding between avidin biotin, the latter conjugate sorted specifically into one domain minor component. In presence substrate, hydrogen peroxide, enzyme-decorated undergo motion, yielding velocities exceeding thermal diffusion by three folds some cases. Experimental details on liposome size control, motor assembly, substrate distribution are presented; effects key experimental factors concentration ratio, also examined. This work thus provides viable approach building asymmetrical lipid-assembled, enzyme-attached colloids and, addition, stresses importance asymmetry achieving particle motion.

Language: Английский

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Collective Molecular Machines: Multidimensionality and Reconfigurability

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: March 18, 2024

Molecular machines are key to cellular activity where they involved in converting chemical and light energy into efficient mechanical work. During the last 60 years, designing molecular structures capable of generating unidirectional motion at nanoscale has been topic intense research. Effective progress made, attributed advances various fields such as supramolecular chemistry, biology nanotechnology, informatics. However, individual only producing nanometer work generally have a single functionality. In order address these problems, collective behaviors realized by integrating several or more units space time become new paradigm. this review, we comprehensively discuss recent developments machines. particular, behavior is divided two paradigms. One appropriate integration efficiently amplify motions deformations construct novel functional materials. The other construction swarming modes level perform microscale operations. We design strategies for both focus on modulation features properties. Subsequently, existing challenges, idea transferring experience gained field micro/nano robotics presented, offering prospects future

Language: Английский

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Higher‐Order Behaviours in Bio‐Inspired Materials

ChemSystemsChem, Journal Year: 2024, Volume and Issue: 6(4)

Published: April 16, 2024

Abstract Bio‐inspired approaches in materials science and systems chemistry are yielding a variety of stimuli‐responsive dynamic that gradually changing our everyday life. However, the ability to chemically program these exhibit macroscopic higher‐order behaviours such as self‐assembly, contractility, swarming, taxis, chemical communication, or predator‐prey dynamics remains an ongoing challenge. While still its infancy, successful fabrication bio‐inspired displaying not only will help bridging gap between living non‐living matter, but it also contribute development advanced for potential applications ranging from tissue engineering biotechnology, soft robotics regenerative medicine. Our Mini‐Review systematically discuss developed thus far systems, namely (i) polymer networks (ii) microbots, (iii) protocells, (iv) prototissues. For each system provide key examples highlight how emergent behaviour could be programmed.

Language: Английский

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Miniature Robots for Battling Bacterial Infection

ACS Nano, Journal Year: 2024, Volume and Issue: 18(47), P. 32335 - 32363

Published: Nov. 11, 2024

Micro/nanorobots have shown great promise for minimally invasive bacterial infection therapy. However, infections usually form biofilms inside the body by aggregation and adhesion, preventing antibiotic penetration increasing likelihood of recurrence. Moreover, a substantial portion happens in those hard-to-access regions, making delivery antibiotics to infected sites or tissues difficult exacerbating challenge addressing infections. feature exceptional mobility controllability, are able deliver drugs specific (targeted delivery), enhance drug penetration. In particular, emergence bioinspired microrobot surface design strategies provided effective alternatives treating infections, thereby possible development resistance. this paper, we review recent advances design, mechanism, actuation modalities micro/nanorobots with antimicrobial features, highlighting active therapy derived complications at various organs, from laboratory bench vivo applications. The current challenges future research directions field summarized. Those breakthroughs offer huge potential clinical translation

Language: Английский

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Design, actuation, and functionalization of untethered soft magnetic robots with life-like motions: A review

Journal of Magnetism and Magnetic Materials, Journal Year: 2023, Volume and Issue: 586, P. 171160 - 171160

Published: Sept. 1, 2023

Language: Английский

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