Metareview: a survey of active matter reviews

The European Physical Journal E, Journal Year: 2025, Volume and Issue: 48(2)

Published: Feb. 1, 2025

In the past years, amount of research on active matter has grown extremely rapidly, a fact that is reflected in particular by existence more than 1000 reviews this topic. Moreover, field become very diverse, ranging from theoretical studies statistical mechanics particles to applied work medical applications microrobots and biological systems artificial swimmers. This makes it difficult get an overview over as whole. Here, we provide such form metareview article surveys existing review articles books matter. Thereby, provides useful starting point for finding literature about specific

Language: Английский

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Biohybrid Magnetically Driven Microrobots for Sustainable Removal of Micro/Nanoplastics from the Aquatic Environment

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(3)

Published: Oct. 9, 2023

Abstract The proliferation of micro/nanoplastics derived from the fragmentation plastic waste released in environment represents an increasingly alarming issue with adverse implications for aquatic ecosystems worldwide. Conventional approaches mitigating such contamination are inadequate removing fragments exceptionally tiny sizes. Therefore, it is highly urgent to develop efficient strategies address threats posed by micro/nanoplastics. Here, biohybrid microrobots, integrating magnetic properties Fe 3 O 4 nanoparticles, investigated dynamic removal various environments via high‐precision actuation and reliable electrostatic interactions. After surface decoration algae cells can achieve precise locomotion wireless manipulation regulating external field. Taking advantage this active movement, robots (MARs) display considerable capture efficiencies water extensive application scenarios. reusability MARs also investigated, proving great recyclable performance. growth cell viability experiments elucidate that presence nanoparticles may result hormesis stimulation growth. Such microrobots eco‐friendly low‐cost characteristics offer attractive strategy sustainably tackling pollution.

Language: Английский

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Open Questions of Chemically Powered Nano- and Micromotors

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(50), P. 27185 - 27197

Published: Dec. 8, 2023

Chemically powered nano- and micromotors are microscopic devices that convert chemical energy into motion. Interest in these motors has grown over the past 20 years because they exhibit interesting collective behaviors have found potential uses biomedical environmental applications. Understanding how operate both individually collectively environments affect their operation is of fundamental applied significance. However, there still significant gaps our knowledge. This Perspective highlights several open questions regarding propulsion mechanisms of, interactions among, impact confinements on driven by self-generated gradients. These based my own experience as an experimentalist. For each question, I describe problem its significance, analyze status-quo, identify bottleneck problem, propose solutions. An underlying theme for interplay among reaction kinetics, physicochemical distributions, fluid flows. Unraveling this requires careful measurements well a close collaboration between experimentalists theoreticians/numerical experts. The interdisciplinary nature challenges suggests solutions could bring new revelations opportunities across disciplines such colloidal sciences, material soft matter physics, robotics, beyond.

Language: Английский

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Untethered Micro/Nanorobots for Remote Sensing: Toward Intelligent Platform

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 16(1)

Published: Nov. 30, 2023

Abstract Untethered micro/nanorobots that can wirelessly control their motion and deformation state have gained enormous interest in remote sensing applications due to unique characteristics various media diverse functionalities. Researchers are developing as innovative tools improve performance miniaturize systems, enabling situ detection of substances traditional methods struggle achieve. Over the past decade development, significant research progress has been made designing strategies based on micro/nanorobots, employing coordinated approaches. This review summarizes latest developments for by utilizing self-generated signals robots, robot behavior, microrobotic manipulation, robot-environment interactions. Providing recent studies relevant sensing, we also discuss challenges future perspectives facing micro/nanorobots-based intelligent platforms achieve complex environments, translating lab achievements into widespread real applications.

Language: Английский

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Intelligent Magnetic Microrobots with Fluorescent Internal Memory for Monitoring Intragastric Acidity

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(29)

Published: May 17, 2024

Abstract This study investigates the dynamic fluctuations of pH caused by gastric acid secretion, a process both biological and clinical significance, with microrobots. Abnormal patterns acidity often indicate gastrointestinal diseases, underlying importance precise intragastric monitoring. Traditional methods using fluorescent probes face challenges due to their faint solid‐state fluorescence, limited target specificity, accuracy. To overcome these obstacles, pH‐responsive organic microparticles decorated magnetite (Fe 3 O 4 ) nanoparticles are engineered. These microrobots exhibit unique fluorescence switching capability at critical pH, enabling monitoring acidity. The magnetic part ensures maneuverability enable targeted navigation. microrobots’ mechanism is elucidated through comprehensive spectroscopy, microscopy, X‐ray diffraction analyses, revealing molecular‐level structural transformations upon interaction antacids. transformations, specifically protonation deprotonation components, prompt distinct response correlating shifts. In vitro ex vivo experiments, simulating stomach conditions, confirm efficacy in imaging. results showcase promising diagnostic potential for tract marking significant advancement imaging‐based medical diagnostics locations.

Language: Английский

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Morphology-Tailored Dynamic State Transition in Active-Passive Colloidal Assemblies

Research, Journal Year: 2024, Volume and Issue: 7

Published: Jan. 1, 2024

Mixtures of active self-propelled and passive colloidal particles promise rich assembly dynamic states that are beyond reach via equilibrium routes. Yet, controllable transition between different remains rare. Here, we reveal a plethora behaviors emerging in assemblies chemically propelled snowman-like colloids spherical as the particle shape, size, composition tuned. For example, assembles one or more with exhibit distinct translating orbiting while those composed colloid 2 display persistent “8”-like cyclic motion hopping circling around plane waist ones out plane, controlled by shape size particles, respectively. These morphology-tailored transitions excellent agreement state diagrams predicted mesoscale dynamics simulations. Our work discloses new corresponding strategies, which applications systems such micromachines functions otherwise impossible.

Language: Английский

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Programmable assemblies of photothermal anisotropic micromotors for multimodal motion

Materials Horizons, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A highly controllable and programmable self-assembly process has been developed, enabling multimodal motion through anisotropic micromotors fabricated using microfluidic technology.

Language: Английский

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Advances in micro-/nanorobots for cancer diagnosis and treatment: propulsion mechanisms, early detection, and cancer therapy

Frontiers in Chemistry, Journal Year: 2025, Volume and Issue: 13

Published: Feb. 6, 2025

In recent years, medical micro-/nanorobots (MNRs) have emerged as a promising technology for diagnosing and treating malignant tumors. MNRs enable precise, targeted actions at the cellular level, addressing several limitations of conventional cancer diagnosis treatment, such insufficient early diagnosis, nonspecific drug delivery, chemoresistance. This review provides an in-depth discussion propulsion mechanisms MNRs, including chemical fuels, external fields (light, ultrasound, magnetism), biological propulsion, hybrid methods, highlighting their respective advantages limitations. Additionally, we discuss novel approaches tumor precision surgery, emphasizing potential clinical applications. Despite significant advancements, challenges biocompatibility, efficiency, translation persist. examines current state MNR applications outlines future directions development, with aim enhancing diagnostic therapeutic efficacy facilitating integration into practice.

Language: Английский

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Recent Advancements in Multimodal Chemically Powered Micro/Nanorobots for Environmental Sensing and Remediation

Chemosensors, Journal Year: 2025, Volume and Issue: 13(2), P. 69 - 69

Published: Feb. 15, 2025

Chemically powered micro/nanorobots (CPMNRs) are self-propelling artificially engineered materials or machines designed with micro-to-nano precision, inspired by the self-migration of biomolecules and microorganisms. CPMNRs convert chemical external energy into mechanical motion, overcoming forces like Brownian diffusion viscosity. They created using top-down bottom-up approaches for applications in chemo-/biosensing, environmental remediation, molecular imaging, drug delivery. As self-mixing contaminated water accelerates remediation process, preferred as an ideal choice applications. Recent advancements multimodal propulsion technologies, material engineering, surface modifications have significantly enhanced capabilities CPMNRs, enabling them to navigate complex environments interact contaminants at level. This review highlights latest developments chemical-driven focusing on their use monitoring, pollutant detection, heavy metals, microplastics, organic soil. It also discusses prospects, sustainability fuels, biocompatibility, scalability large-scale deployment.

Language: Английский

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High‐throughput Photoactive Magnetic Microrobots for Food Quality Control

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

Abstract Ensuring food quality and safety according to stringent global standards requires analytical procedures that are accurate, cost‐effective, efficient. This present innovative high‐throughput microrobots designed for the detection of antioxidants in samples. These consist photocatalytic bismuth subcarbonate anchored on silica‐coated magnetite nanoparticles. Upon exposure UV light, they generate reactive oxygen species via photocatalysis, which oxidize colorless dye into a green‐colored radical cation. The presence inhibits this reaction, allowing quantification antioxidant activity. magnetic Fe₃O₄/SiO₂ core enables steering using transverse rotating field, facilitating automated assays custom‐designed 3D‐printed sensing platform. results demonstrate these magneto‐photocatalytic can perform automated, assessments quality, representing significant advancement analysis technology.

Language: Английский

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