Micro and Nano Robotics

This study shows that chemical gradients induce eversion in bacterial colonies by triggering a capillary instability, leading to bacterial dissemination.

This study shows that rod-like bacteria with different shapes sort spatially in growing colonies, with longer cells moving to the periphery due to mechanical interactions and nematic order.

This paper introduces chlamylipo, a bio-hybrid microswimmer using Chlamydomonas reinhardtii in a liposome, demonstrating propulsion through membrane deformation and fluid dynamics.

This study shows Chlamydomonas reinhardtii switches swimming trajectory handedness in response to light intensity through flagellar beat plane reorientation.

This study shows bacterial motility patterns smoothly transition between run-and-tumble and hop-and-trap behaviors across varying spatial confinement and disorder.

The paper investigates rippling in Myxococcus xanthus colonies and finds that surface waves, not synchronized cell motility, drive the phenomenon, supported by physical modeling and experimental verification.

This study shows sperm adaptively navigate complex environments by adjusting surface interactions and scattering dynamics, enhancing their diffusivity in confined spaces.

This study shows motile bacteria induce segregation of non-motile cells in confined flow, leading to asymmetric biofilm formation through a physical mechanism involving rheotactic drift and sedimentation.

This study examines how E. coli bacteria form different patterns in evaporating droplets based on their activity and environmental conditions, revealing three types of self-organization.

This study investigates how Trypanosoma brucei adapts its motility to navigate confined environments using high-speed video and digital holography microscopy.

This paper identifies a novel surface motility mechanism in Salmonella and E. coli called 'swashing' that does not require flagellar propulsion and is driven by fermentation-induced osmotic gradients.

This study observes phase synchronization between bacterial flagellar motors through hydrodynamic coupling, showing that stronger coupling leads to more stable phase-locking.

This study investigates how confinement affects bacterial populations by showing that Escherichia coli in quasi-2D droplets self-organize into a core-shell structure driven by oxygen dynamics and motility.

This study uses 3D agent-based simulations to show that changes in cell motility, without chemical signaling, can recreate collective behaviors and fruiting body formation in M. xanthus colonies.

This paper introduces a scalable fabrication platform for magnetic microrobots capable of precise intracorporeal navigation, validated in multiple models and demonstrating potential for precision medicine applications.

This paper proposes a non-invasive microrobotic embryo transfer technique using magnetically actuated microcarriers to improve embryo delivery in assisted reproduction, enabling precise, image-guided delivery with minimal invasiveness.

This study shows how metachronal wave coordination in Didinium nasutum enables diverse swimming behaviors by regulating propulsion and maneuverability through dynamic ciliary patterns.

This study experimentally examines how Stylonychia lemnae ciliates form feeding clusters, showing that hydrodynamic interactions enhance mixing and resource detection through collective flows.

This paper introduces a sound-driven microrobot inspired by sperm cell geometry, demonstrating directional propulsion and rheotactic behavior in fluid environments.

This study shows capillary forces organize bacterial colonies into dense, nematic groups and influence their collective dynamics.

The paper builds a biohybrid robot with muscle-driven tail motion to study swimming dynamics and muscle adaptation, achieving speeds surpassing low-Reynolds number predictions.

This paper uses reinforcement learning to discover optimal swimming gaits for bio-inspired microswimmers in low Reynolds number fluids, finding that complex geometries significantly enhance locomotion efficiency.

The paper studies sperm hyperactivation in different fluid environments, identifying three migration strategies and showing how circling-and-wandering balances exploration and exploitation for effective migration.

This paper develops an AI-controlled ultrasound-driven microrobot using model-based reinforcement learning, achieving high success rates in navigation and real-time manipulation in complex environments.

The paper studies oscillatory phototaxis in Chlamydomonas reinhardtii, showing how adaptation leads to collective density band formation under constant light.

The paper models E. coli run-and-tumble behavior using fluid dynamics simulations and experiments, finding that flagellar rigidity and arrangement, not number, primarily influence motility.

This study shows Caulobacter crescentus uses backward swimming controlled by mechanical forces to navigate confined environments.

This study develops a trypanosome model and uses hydrodynamic simulations to analyze how mechanical features affect swimming behavior, showing the importance of body elasticity and flagellum dynamics.

This study investigates collective oscillations in bacterial biofilms, showing that nonreciprocal pili activity and aging-related frequency gradients drive directional wave propagation and symmetry breaking.

This study shows that bacterial migration direction in oxygen gradients depends on population density, revealing a critical density threshold for collective migration.