A swarm of slippery micropropellers penetrates the vitreous body of the eye

Wu, Zhiguang; Troll, Jonas; Jeong, Hyeon‐Ho; Wei, Qiang; Stang, Marius; Ziemssen, Focke; Wang, Zegao; Dong, Mingdong; Schnichels, Sven; Qiu, Tian; Fischer, Peer

doi:10.1126/sciadv.aat4388

Cited by 446 publications

(423 citation statements)

References 47 publications

Supporting

Mentioning

402

Contrasting

Order By: Relevance

“…Finally, multirobot operation in 3D has been demonstrated through heterogeneous microrobot designs,68 which is limited to a small number of microrobot teams and not possible to scale up to a large number of robots easily. Swarm control of magnetic microrobots has also become possible recently, where the mean and variance of the swarm shape and dynamics can be controlled on solid surfaces,69 at the water–air interface70 and in fluids71,72 using dynamic self‐assembly methods and ensemble locomotion behavior controlled by the external magnetic fields/gradients.…”

Section: Pros and Cons Discussionmentioning

confidence: 99%

Pros and Cons: Magnetic versus Optical Microrobots

2020

View full text Add to dashboard Cite

Mobile microrobotics has emerged as a new robotics field within the last decade to create untethered tiny robots that can access and operate in unprecedented, dangerous, or hard‐to‐reach small spaces noninvasively toward disruptive medical, biotechnology, desktop manufacturing, environmental remediation, and other potential applications. Magnetic and optical actuation methods are the most widely used actuation methods in mobile microrobotics currently, in addition to acoustic and biological (cell‐driven) actuation approaches. The pros and cons of these actuation methods are reported here, depending on the given context. They can both enable long‐range, fast, and precise actuation of single or a large number of microrobots in diverse environments. Magnetic actuation has unique potential for medical applications of microrobots inside nontransparent tissues at high penetration depths, while optical actuation is suitable for more biotechnology, lab‐/organ‐on‐a‐chip, and desktop manufacturing types of applications with much less surface penetration depth requirements or with transparent environments. Combining both methods in new robot designs can have a strong potential of combining the pros of both methods. There is still much progress needed in both actuation methods to realize the potential disruptive applications of mobile microrobots in real‐world conditions.

show abstract

Section: Pros and Cons Discussionmentioning

confidence: 99%

Pros and Cons: Magnetic versus Optical Microrobots

2020

View full text Add to dashboard Cite

show abstract

Section: Other Shapesmentioning

confidence: 99%

“…Among which, helical magnetic micropropellers prepared through GLAD were shown to be capable of penetrating the vitreous body and reachingt he retina ( Figure 5D). [61] Nickelw as deposited onto [29].Copyright 2007 American Chemical Society. C) Preparationo frod-shaped nanomotors by means of GLAD.…”

Section: Other Shapesmentioning

confidence: 99%

See 1 more Smart Citation

Fabrication of Self‐Propelled Micro‐ and Nanomotors Based on Janus Structures

Luan

Wang

et al. 2019

Chemistry A European J

View full text Add to dashboard Cite

Delicate molecular and biological motors are tiny machines capable of achieving numerous vital tasks in biological processes. To gain ad eeper understanding of their mechanism of motion, researchers from multiple backgrounds have designed andf abricated artificial micro-and nanomotors. These nano-/microscale motors can self-propel in solution by exploiting different sources of energy;t hus showing tremendous potentiali nw idespread applications. As one of the most common motor systems, Janus motors possessunique asymmetric structures and integrate different functional materials onto two sides. This review mainly focuses on the fabrication of different types of micro-and nanomotors based on Janus structures. Furthermore, some challenges still exist in the implementation of Janus motors in the biomedical field. With such common goals in mind, it is expected that the elaborate and multifunctional design of Janus motors will overcome their challenges in the near future.

show abstract

“…Because the magnetic field will interact with any magnetic object, a magnetic device can convert magnetic energy into kinetic movement to overcome viscous resistance. Various robots have been developed that can change posture, speed, and direction by changing the frequency, size, and direction of the magnetic field . Because robots of different structures will respond entirely differently to the magnetic field, it is possible to realize the multidegree of freedom of a robot.…”

Section: Introductionmentioning

confidence: 99%

Untethered Octopus‐Inspired Millirobot Actuated by Regular Tetrahedron Arranged Magnetic Field

Dai

Liang

Chen

et al. 2020

Advanced Intelligent Systems

View full text Add to dashboard Cite

Flexible magnetic small‐scale robots (overall dimensions smaller than 1 cm) can use a patterned magnetization profile to noninvasively access a confined, enclosed liquid environment and therefore achieve applications in object manipulation or in minimally invasive procedures. Existing magnetic‐controlled small‐scale robots have shown wide usage for their high mobility and higher degrees of freedom than their rigid counterparts. Herein, an octopus‐like soft robot is proposed for potential use in biomedical and engineering fields. First, a magnetic control system is established, which uses the minimum number of coils arranged by a regular tetrahedron structure. This system responds quickly and with high precision to propel a robot in 3D space utilizing the coupled field from multiple electromagnets in concert. An octopus‐like robot with three legs is designed, which moves freely in the workspace without constraints. A time‐asymmetric gradient magnetic field is applied, to ensure that the movement of the robot is more stable and controlled. At the same time, the movement of the tail improves the precision of the robot and makes control easier.

show abstract

A swarm of slippery micropropellers penetrates the vitreous body of the eye

Abstract: A swarm of microrobots propels through the vitreous humor of the eye and reaches a small targeted spot on the retina.

Cited by 446 publications

References 47 publications

Pros and Cons: Magnetic versus Optical Microrobots

Pros and Cons: Magnetic versus Optical Microrobots

Fabrication of Self‐Propelled Micro‐ and Nanomotors Based on Janus Structures

Untethered Octopus‐Inspired Millirobot Actuated by Regular Tetrahedron Arranged Magnetic Field

Contact Info

Product

Resources

About