Generating Multistructured Ultrasound via Bioinspired Metaskin Patterning for Low-Threshold and Contactless Control of Living Organisms

Peng-Qi Li; Zong-Lin Li; Wei ZhouShengwu WangLong MengYu-Gui PengZhi ChenHairong ZhengXue-Feng Zhu

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Generating Multistructured Ultrasound via Bioinspired Metaskin Patterning for Low-Threshold and Contactless Control of Living Organisms

机译：Generating Multistructured Ultrasound via Bioinspired Metaskin Patterning for Low-Threshold and Contactless Control of Living Organisms

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Metasurfaces of the subwavelength thicknesses provide a distinctive routefor acoustic wave manipulation. Based on the advanced 3D printing, thosejudiciously designed 2D metamaterials enable intriguing effects such asabnormal reflection, transmission, and absorption. However, acousticmetasurfaces, with strong wave–structure interactions in subwavelengthscales, have encountered a big challenge of being acoustically transparentdue to the insufficient impedance mismatch underwater. Here, reconfigurablebioinspired metaskin patterning for generating multistructured waterborneultrasound is proposed. The nanostructured metaskin exhibits the “lotuseffect,” with the thickness of only 70 μm (≈1/20 wavelength at 1 MHz) and atremendous impedance mismatch (≈0.0001 transmission) for ultrasound. Bydepositing the strippable metaskins via self-assembly into different patterns,the focusing, the vortex, and the Talbot structured ultrasound beams areimplemented, respectively. The multistructured ultrasound has the patternedintensity fields of energy redistribution, where even weak field enhancementat low frequencies can activate the living organisms directly without usingmicrobubbles, which enables low-threshold and contactless behavior controlvia the mechanical stimulus.

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来源
《Advanced functional materials》 |2022年第33期|2203109.1-2203109.10|共10页
作者
Peng-Qi Li; Zong-Lin Li; Wei ZhouShengwu WangLong MengYu-Gui PengZhi ChenHairong ZhengXue-Feng Zhu;
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School of Physics and Innovation InstituteHuazhong University of Science and TechnologyWuhan, Hubei 430074, P. R. China,Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institutes of Advanced T;

School of Physics and Innovation InstituteHuazhong University of Science and TechnologyWuhan, Hubei 430074, P. R. China;

Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen, Guangdong 518055, P. R. ChinaSchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan, Hubei 430074, P. R. China,Wuhan Shuneng New Material Co. Ltd.Wuhan, Hubei 430074, P. R. ChinaWuhan Shuneng New Material Co. Ltd.Wuhan, Hubei 430074, P. R. China;

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bioinspired metaskins; lotus effect; mechanical stimuli; self-assembled nanosurfaces; structured ultrasound;

Generating Multistructured Ultrasound via Bioinspired Metaskin Patterning for Low-Threshold and Contactless Control of Living Organisms

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