Journal ArticleDOI
Bio-inspired magnetic swimming microrobots for biomedical applications.
TLDR
This article reviews the various swimming methods with particular focus on helical propulsion inspired by E. coli bacteria, and the frequency-dependent behavior of helical microrobots is discussed and preliminary experimental results are presented showing the decoupling of an individual agent within a group of three microrOBots.Abstract:
Microrobots have been proposed for future biomedical applications in which they are able to navigate in viscous fluidic environments. Nature has inspired numerous microrobotic locomotion designs, which are suitable for propulsion generation at low Reynolds numbers. This article reviews the various swimming methods with particular focus on helical propulsion inspired by E. coli bacteria. There are various magnetic actuation methods for biomimetic and non-biomimetic microrobots, such as rotating fields, oscillating fields, or field gradients. They can be categorized into force-driven or torque-driven actuation methods. Both approaches are reviewed and a previous publication has shown that torque-driven actuation scales better to the micro- and nano-scale than force-driven actuation. Finally, the implementation of swarm or multi-agent control is discussed. The use of multiple microrobots may be beneficial for in vivo as well as in vitro applications. Thus, the frequency-dependent behavior of helical microrobots is discussed and preliminary experimental results are presented showing the decoupling of an individual agent within a group of three microrobots.read more
Citations
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Journal ArticleDOI
Micro/Nanorobots for Biomedicine: Delivery, Surgery, Sensing, and Detoxification.
TL;DR: This article reviews recent progress and future perspectives of micro/nanorobots in biomedicine, with a special focus on their potential advantages and applications for directed drug delivery, precision surgery, medical diagnosis, and detoxification.
Journal ArticleDOI
Chemically Powered Micro- and Nanomotors
TL;DR: This Review summarizes the major advances in the growing field of catalytic nanomotors, which started ten years ago.
Journal ArticleDOI
Multifunctional biohybrid magnetite microrobots for imaging-guided therapy
Xiaohui Yan,Qi Zhou,Melissa Vincent,Yan Deng,Jiangfan Yu,Jianbin Xu,Tiantian Xu,Tao Tang,Liming Bian,Yi-Xiang J. Wang,Kostas Kostarelos,Li Zhang +11 more
TL;DR: The biohybrid magnetic robots endowed with multifunctional capabilities by integrating desired structural and functional attributes from a biological matrix and an engineered coating are reported, representing a microrobotic platform that could be further developed for in vivo imaging–guided therapy and a proof of concept for the engineering of multifunctionsal microrOBotic and nanorobotic devices.
Journal ArticleDOI
Soft micromachines with programmable motility and morphology
TL;DR: It is found that tail and body morphologies together determine swimming efficiency and, unlike for rigid swimmers, the choice of magnetic field can subtly change the motility of soft microswimmers.
References
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Journal ArticleDOI
Life at low Reynolds number
TL;DR: Weisskopf as mentioned in this paper presented a transparencies of a tall rectangular transparent vessel of corn syrup, projected by an overhead projector turned on its side, which was itself a slightly edited transcript of a tape.
Journal ArticleDOI
The hydrodynamics of swimming microorganisms
Eric Lauga,Thomas R. Powers +1 more
TL;DR: The biophysical and mechanical principles of locomotion at the small scales relevant to cell swimming, tens of micrometers and below are reviewed, with emphasis on the simple physical picture and fundamental flow physics phenomena in this regime.
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Microscopic artificial swimmers
TL;DR: It is shown that a linear chain of colloidal magnetic particles linked by DNA and attached to a red blood cell can act as a flexible artificial flagellum, which induces a beating pattern that propels the structure, and that the external fields can be adjusted to control the velocity and the direction of motion.
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Microrobots for Minimally Invasive Medicine
TL;DR: The aim of this review is to provide a comprehensive survey of the technological state of the art in medical microrobots, to explore the potential impact of medical micRORobots and inspire future research in this field.
Journal ArticleDOI
Controlled propulsion of artificial magnetic nanostructured propellers.
Ambarish Ghosh,Peer Fischer +1 more
TL;DR: The construction and operation of chiral colloidal propellers that can be navigated in water with micrometer-level precision using homogeneous magnetic fields are reported.