Thrust Symmetry Engineering in Lithographically Defined Bubble-Propelled Micromotors via Multi-Orifice Exhaust-Port Design.

Isao Shitanda, Takuma Suzuki, Kentaro Zama, Yoshinao Hoshi, Masanori Hayase, Masayuki Itagaki

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Article in ACS omega, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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6 authors.

Isao ShitandaDepartment of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan.ORCID https://orcid.org/0000-0001-9751-016X

Takuma SuzukiDepartment of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan.

Kentaro ZamaDepartment of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan.

Yoshinao HoshiDepartment of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan.ORCID https://orcid.org/0000-0002-4179-7939

Masanori HayaseDepartment of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan.ORCID https://orcid.org/0000-0002-1398-9087

Masayuki ItagakiDepartment of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan.ORCID https://orcid.org/0000-0003-3422-3344

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bubble-driven catalytic micromotors generate thrust through gas-liquid interfacial processes at the inner surfaces of the catalyst; however, systematic control over the thrust-vector symmetry through the geometric design of the exhaust port layout has not been demonstrated. Here, we report a lithographic fabrication platform that produces stacked Au/Pt hollow micromotors with independently programmable catalytic exhaust-port configurationssingle, two, and three orificeswhich enable a direct experimental investigation of the extent to which the interface-defined port geometry strongly influences the propulsion behavior. Using a single-orifice trapezoidal micromotor as the baseline system, we establish concentration-dependent propulsion at 73 μm s

Identifiers

PMID42626492

DOI10.1021/acsomega.6c05214

PMCPMC13491906

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LicenceCC BY

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