Structured light enables biomimetic swimming and versatile locomotion of photoresponsive soft microrobots : Nature...
Originally shared by Rob Jongschaap
Structured light enables biomimetic swimming and versatile locomotion of photoresponsive soft microrobots : Nature Materials : Nature Publishing Group
'... AbstractMicroorganisms move in challenging environments by periodic changes in body shape. In contrast, current artificial microrobots cannot actively deform, exhibiting at best passive bending under external fields. Here, by taking advantage of the wireless, scalable and spatiotemporally selective capabilities that light allows, we show that soft microrobots consisting of photoactive liquid-crystal elastomers can be driven by structured monochromatic light to perform sophisticated biomimetic motions. We realize continuum yet selectively addressable artificial microswimmers that generate travelling-wave motions to self-propel without external forces or torques, as well as microrobots capable of versatile locomotion behaviours on demand. Both theoretical predictions and experimental results confirm that multiple gaits, mimicking either symplectic or antiplectic metachrony of ciliate protozoa, can be achieved with single microswimmers. The principle of using structured light can be extended to other applications that require microscale actuation with sophisticated spatiotemporal coordination for advanced microrobotic technologies.
...'
http://www.nature.com/nmat/journal/vaop/ncurrent/full/nmat4569.html
A swimming microrobot is driven by a light-induced peristaltic motion
' ... Light-driven microswimmers: the material of the swimming body, which measures just under one millimetre in length, is chosen so that it changes shape when exposed to green light. This causes wave-shaped protrusions to form along the swimmer and drive it in the opposite direction when light patterns move over its surface. ... '
http://phys.org/news/2016-02-microrobot-driven-light-induced-peristaltic-motion.html
http://phys.org/news/2016-02-microrobot-driven-light-induced-peristaltic-motion.html
Structured light enables biomimetic swimming and versatile locomotion of photoresponsive soft microrobots : Nature Materials : Nature Publishing Group
'... AbstractMicroorganisms move in challenging environments by periodic changes in body shape. In contrast, current artificial microrobots cannot actively deform, exhibiting at best passive bending under external fields. Here, by taking advantage of the wireless, scalable and spatiotemporally selective capabilities that light allows, we show that soft microrobots consisting of photoactive liquid-crystal elastomers can be driven by structured monochromatic light to perform sophisticated biomimetic motions. We realize continuum yet selectively addressable artificial microswimmers that generate travelling-wave motions to self-propel without external forces or torques, as well as microrobots capable of versatile locomotion behaviours on demand. Both theoretical predictions and experimental results confirm that multiple gaits, mimicking either symplectic or antiplectic metachrony of ciliate protozoa, can be achieved with single microswimmers. The principle of using structured light can be extended to other applications that require microscale actuation with sophisticated spatiotemporal coordination for advanced microrobotic technologies.
...'
http://www.nature.com/nmat/journal/vaop/ncurrent/full/nmat4569.html
A swimming microrobot is driven by a light-induced peristaltic motion
' ... Light-driven microswimmers: the material of the swimming body, which measures just under one millimetre in length, is chosen so that it changes shape when exposed to green light. This causes wave-shaped protrusions to form along the swimmer and drive it in the opposite direction when light patterns move over its surface. ... '
http://phys.org/news/2016-02-microrobot-driven-light-induced-peristaltic-motion.html
http://phys.org/news/2016-02-microrobot-driven-light-induced-peristaltic-motion.html
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