Sensing surface mechanical deformation using active probes driven by motor proteins.
Studying mechanical deformation at the surface of soft materials has been challenging due to the difficulty in separating surface deformation from the bulk elasticity of the materials. Here, we introduce a new approach for studying the surface mechanical deformation of a soft material by utilizing a large number of self-propelled microprobes driven by motor proteins on the surface of the material. Information about the surface mechanical deformation of the soft material is obtained through changes in mobility of the microprobes wandering across the surface of the soft material. The active microprobes respond to mechanical deformation of the surface and readily change their velocity and direction depending on the extent and mode of surface deformation. This highly parallel and reliable method of sensing mechanical deformation at the surface of soft materials is expected to find applications that explore surface mechanics of soft materials and consequently would greatly benefit the surface science.
Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan.
Daisuke
D
Inoue
Applied Physics Course, Gifu University, Gifu 501-1193, Japan.
Takahiro
T
Nitta
Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan.
Arif Md Rashedul
AMR
Kabir
Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan.|Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan.
Kazuki
K
Sada
Faculty of Advanced Life Science, Hokkaido University, Sapporo 060-0810, Japan.
Jian Ping
JP
Gong
Department of Computational Intelligence and Systems Science, Tokyo Institute of Technology, Yokohama 226-8501, Japan.
Akihiko
A
Konagaya
Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan.|Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan.
Akira
A
Kakugo
D000255:Adenosine Triphosphate / Q000737:chemistry; D000818:Animals; D001921:Brain / Q000378:metabolism; D003599:Cytoskeleton / Q000737:chemistry*; D004129:Dimethylpolysiloxanes / Q000737:chemistry; D004398:Dyneins / Q000737:chemistry; D004548:Elasticity; D049452:Green Fluorescent Proteins / Q000737:chemistry; D006801:Humans; D016547:Kinesins / Q000737:chemistry; D008422:Materials Testing; D008870:Microtubules / Q000737:chemistry; D020409:Molecular Motor Proteins / Q000737:chemistry*; D009218:Myosins / Q000737:chemistry; D017382:Reactive Oxygen Species / Q000737:chemistry; D013314:Stress, Mechanical; D013552:Swine
D004129:Dimethylpolysiloxanes; C488101:KIF5B protein, human; D020409:Molecular Motor Proteins; D017382:Reactive Oxygen Species; D049452:Green Fluorescent Proteins; C013830:baysilon; D000255:Adenosine Triphosphate; D009218:Myosins; D004398:Dyneins; D016547:Kinesins
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