Self‐Propulsion of a Light‐Powered Microscopic Crystalline Flapper in Water

Autor: Kazuma Obara, Yoshiyuki Kageyama, Sadamu Takeda
Rok vydání: 2021
Předmět:
energy conversion
Fin
Materials science
FOS: Physical sciences
Pattern Formation and Solitons (nlin.PS)
Condensed Matter - Soft Condensed Matter
symmetry breaking
Biomaterials
Crystal
Reciprocating motion
Physics - Chemical Physics
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
Animals
General Materials Science
Stroke (engine)
light-driven motor
Swimming
Chemical Physics (physics.chem-ph)
Flapper
Microscopy
Condensed Matter - Mesoscale and Nanoscale Physics
dissipative self-organization
Fishes
Water
General Chemistry
Mechanics
Nonlinear Sciences - Pattern Formation and Solitons
Nonlinear Sciences - Adaptation and Self-Organizing Systems
Biomechanical Phenomena
Active matter
scallop theorem
Mechanism (engineering)
Scallop theorem
Soft Condensed Matter (cond-mat.soft)
active matter
Adaptation and Self-Organizing Systems (nlin.AO)
microrobot
Biotechnology
Zdroj: Small. 18:2105302
ISSN: 1613-6829
1613-6810
DOI: 10.1002/smll.202105302
Popis: A key goal in developing molecular microrobots that mimic real-world animal dynamic behavior is to understand better the self-continuous progressive motion resulting from collective molecular transformation. This study reports, for the first time, the experimental realization of directional swimming of a microcrystal that exhibits self-continuous reciprocating motion in a two-dimensional water tank. Although the reciprocal flip motion of the crystals was like that of a fish wagging its tail fin, many of the crystals swam in the opposite direction to which a fish would swim. Here we explore the directionality generation mechanism and physical features of the swimming behavior by constructing a mathematical model for the crystalline flapper. The results show that a tiny crystal with a less-deformable part in its flip fin exhibits a pull-type stroke swimming, while a crystal with a fin that uniformly deforms exhibits push-type kicking motion.
Comment: This is the pre-peer reviewed version
Databáze: OpenAIRE
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