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Surface Roughening of Pt-Polystyrene Spherical Janus Micromotors for Enhanced Motion Speed

Spherical Janus micromotors (SJMs) have attracted much attention, and their high-speed motion is highly desired due to their various potential applications. However, the conventional template-deposition method often leads to an active Pt coating with a smooth surface, which is unbeneficial to speed...

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Autores principales: Zhou, Le, Wei, Yi, Zhang, Hongwen, Huang, Zhulin, Zhu, Shuyi, Zhao, Zhipeng, Guo, Yujing, Fu, Hao, Zhao, Qian, Cai, Weiping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9029801/
https://www.ncbi.nlm.nih.gov/pubmed/35457860
http://dx.doi.org/10.3390/mi13040555
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author Zhou, Le
Wei, Yi
Zhang, Hongwen
Huang, Zhulin
Zhu, Shuyi
Zhao, Zhipeng
Guo, Yujing
Fu, Hao
Zhao, Qian
Cai, Weiping
author_facet Zhou, Le
Wei, Yi
Zhang, Hongwen
Huang, Zhulin
Zhu, Shuyi
Zhao, Zhipeng
Guo, Yujing
Fu, Hao
Zhao, Qian
Cai, Weiping
author_sort Zhou, Le
collection PubMed
description Spherical Janus micromotors (SJMs) have attracted much attention, and their high-speed motion is highly desired due to their various potential applications. However, the conventional template-deposition method often leads to an active Pt coating with a smooth surface, which is unbeneficial to speed enhancement in terms of catalytic reaction. Here, a facile surface roughening method is presented to fabricate the Pt-polystyrene (PS) SJMs with rough Pt surface (or Pt(r)-PS SJMs) by plasma-etching the PS colloidal monolayer and then depositing Pt. The Pt(r)-PS SJMs can exhibit directional motion pushed by the Pt in the various H(2)O(2) solutions, and they show much higher motion speeds than the Pt-PS SJMs with smooth Pt surfaces at the same H(2)O(2) concentration. The Pt-pushed motion is related to the locally asymmetric catalytic reaction of the Pt coating on PS. The speed is also associated with the surface roughness of the Pt coating. The Pt film with a rough surface causes enhanced motion speed due to the improvement of reaction catalytic activity. This work presents a new route to enhancing the motor motion speed, which is of significance in designing micromotors with high-speed motion.
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spelling pubmed-90298012022-04-23 Surface Roughening of Pt-Polystyrene Spherical Janus Micromotors for Enhanced Motion Speed Zhou, Le Wei, Yi Zhang, Hongwen Huang, Zhulin Zhu, Shuyi Zhao, Zhipeng Guo, Yujing Fu, Hao Zhao, Qian Cai, Weiping Micromachines (Basel) Article Spherical Janus micromotors (SJMs) have attracted much attention, and their high-speed motion is highly desired due to their various potential applications. However, the conventional template-deposition method often leads to an active Pt coating with a smooth surface, which is unbeneficial to speed enhancement in terms of catalytic reaction. Here, a facile surface roughening method is presented to fabricate the Pt-polystyrene (PS) SJMs with rough Pt surface (or Pt(r)-PS SJMs) by plasma-etching the PS colloidal monolayer and then depositing Pt. The Pt(r)-PS SJMs can exhibit directional motion pushed by the Pt in the various H(2)O(2) solutions, and they show much higher motion speeds than the Pt-PS SJMs with smooth Pt surfaces at the same H(2)O(2) concentration. The Pt-pushed motion is related to the locally asymmetric catalytic reaction of the Pt coating on PS. The speed is also associated with the surface roughness of the Pt coating. The Pt film with a rough surface causes enhanced motion speed due to the improvement of reaction catalytic activity. This work presents a new route to enhancing the motor motion speed, which is of significance in designing micromotors with high-speed motion. MDPI 2022-03-31 /pmc/articles/PMC9029801/ /pubmed/35457860 http://dx.doi.org/10.3390/mi13040555 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhou, Le
Wei, Yi
Zhang, Hongwen
Huang, Zhulin
Zhu, Shuyi
Zhao, Zhipeng
Guo, Yujing
Fu, Hao
Zhao, Qian
Cai, Weiping
Surface Roughening of Pt-Polystyrene Spherical Janus Micromotors for Enhanced Motion Speed
title Surface Roughening of Pt-Polystyrene Spherical Janus Micromotors for Enhanced Motion Speed
title_full Surface Roughening of Pt-Polystyrene Spherical Janus Micromotors for Enhanced Motion Speed
title_fullStr Surface Roughening of Pt-Polystyrene Spherical Janus Micromotors for Enhanced Motion Speed
title_full_unstemmed Surface Roughening of Pt-Polystyrene Spherical Janus Micromotors for Enhanced Motion Speed
title_short Surface Roughening of Pt-Polystyrene Spherical Janus Micromotors for Enhanced Motion Speed
title_sort surface roughening of pt-polystyrene spherical janus micromotors for enhanced motion speed
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9029801/
https://www.ncbi.nlm.nih.gov/pubmed/35457860
http://dx.doi.org/10.3390/mi13040555
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