Results 91 to 100 of about 4,513 (242)

Multiphoton‐Printed Microrobotic Arrays Powered by Discrete, Monolithically Integrated Hydrogel Actuators

open access: yesAdvanced Robotics Research, EarlyView.
Functional surfaces are investigated as a foundation for reconfigurable microscale systems with sensing and actuation capabilities. Advances in additive manufacturing enable our development of planar arrays of hybrid‐material, compliant microdevices that convert environmental stimuli into programmed motion and visual responses.
Sandra Edward   +5 more
wiley   +1 more source

Gravitaxis of asymmetric self-propelled colloidal particles [PDF]

open access: yes, 2014
Many motile microorganisms adjust their swimming motion relative to the gravitational field and thus counteract sedimentation to the ground. This gravitactic behavior is often the result of an inhomogeneous mass distribution which aligns the ...
Bechinger, Clemens   +5 more
core   +2 more sources

Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots

open access: yesAdvanced Robotics Research, EarlyView.
This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou   +4 more
wiley   +1 more source

Engineering passive swimmers by shaking liquids

open access: yesNew Journal of Physics, 2019
The locomotion and design of microswimmers are topical issues of current fundamental and applied research. In addition to numerous living and artificial active microswimmers, a passive microswimmer was identified only recently: a soft, Λ-shaped, non ...
M Laumann   +3 more
doaj   +1 more source

High-speed motility originates from cooperatively pushing and pulling flagella bundles in bilophotrichous bacteria

open access: yeseLife, 2020
Bacteria propel and change direction by rotating long, helical filaments, called flagella. The number of flagella, their arrangement on the cell body and their sense of rotation hypothetically determine the locomotion characteristics of a species.
Klaas Bente   +7 more
doaj   +1 more source

Coarse Graining Nonisothermal Microswimmer Suspensions

open access: yesFrontiers in Physics, 2021
We investigate coarse-grained models of suspended self-thermophoretic microswimmers. Upon heating, the Janus spheres, with hemispheres made of different materials, induce a heterogeneous local solvent temperature that causes the self-phoretic particle ...
Sven Auschra   +4 more
doaj   +1 more source

Light control of the flow of phototactic microswimmer suspensions

open access: yes, 2013
Some micro-algae are sensitive to light intensity gradients. This property is known as phototaxis: the algae swim toward a light source (positive phototaxis). We use this property to control the motion of micro-algae within a Poiseuille flow using light.
Garcia, Xabel   +2 more
core   +3 more sources

Membrane penetration and trapping of an active particle [PDF]

open access: yes, 2019
The interaction between nano- or micro-sized particles and cell membranes is of crucial importance in many biological and biomedical applications such as drug and gene delivery to cells and tissues.
Daddi-Moussa-Ider, Abdallah   +8 more
core   +2 more sources

MicroRoboScope: A Portable and Integrated Mechatronic Platform for Magnetic and Acoustic Microrobotic Experimentation

open access: yesAdvanced Robotics Research, EarlyView.
This work presents the MicroRoboScope, a highly integrated, compact, and portable microrobotic experimentation platform combining electromagnetic and acoustic actuation with real‐time visual feedback into a single, end‐to‐end device. The system enables closed‐loop control and tracking algorithm experimentation within an accessible and unified hardware ...
Max Sokolich   +4 more
wiley   +1 more source

Flagellar dynamics of chains of active Janus particles fueled by an AC electric field

open access: yesNew Journal of Physics, 2018
We study the active dynamics of self-propelled asymmetrical colloidal particles (Janus particles) fueled by an AC electric field. Both the speed and direction of the self-propulsion, and the strength of the attractive interaction between particles can be
Daiki Nishiguchi   +3 more
doaj   +1 more source

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