Superhydrophobic Drag-Reduction Spherical Bearing Fabricated by Laser Ablation and PEI Regulated ZnO Nanowire Growth

Abstract The resistance of the bearing is a significant factor affecting the performance of the ball-disk rotor gyroscope. The micro and nano combined surface with low surface energy material modifications can be hydrophobic. This can reduce the drag when the bearing is lubricated by deionized water...

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Autores principales:	Rui Weng, Haifeng Zhang, Yanjing Tuo, Yang Wang, Xiaowei Liu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/def06c2720ba4967a502fe255eb05669
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spelling	oai:doaj.org-article:def06c2720ba4967a502fe255eb056692021-12-02T12:32:53ZSuperhydrophobic Drag-Reduction Spherical Bearing Fabricated by Laser Ablation and PEI Regulated ZnO Nanowire Growth10.1038/s41598-017-05546-z2045-2322https://doaj.org/article/def06c2720ba4967a502fe255eb056692017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05546-zhttps://doaj.org/toc/2045-2322Abstract The resistance of the bearing is a significant factor affecting the performance of the ball-disk rotor gyroscope. The micro and nano combined surface with low surface energy material modifications can be hydrophobic. This can reduce the drag when the bearing is lubricated by deionized water. Laser ablation method is utilized to form micron-scaled structures on the surface of the stainless steel rotor ball. And the nanostructures are formed by PEI (Polyetherimide) regulated ZnO nanowires growth. After low surface energy material modification, the water contact angle of processed surface was 163° and the sliding angle was less than 4°. The maximum rotational speed was enhanced by up to 82.77% at 1.5 W driving power. Experiments show that the superhydrophobic drag-reduction spherical bearing has good short-term reliability. At 5 V drive voltage, the bearing can extend the rotational speed of ball-disk rotor gyroscope to 35000 rpm, and maintain the normal operation for longer than 40 minutes. This is quite meaningful for short-term-work or one-time-use rotor gyroscopes.Rui WengHaifeng ZhangYanjing TuoYang WangXiaowei LiuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Rui Weng Haifeng Zhang Yanjing Tuo Yang Wang Xiaowei Liu Superhydrophobic Drag-Reduction Spherical Bearing Fabricated by Laser Ablation and PEI Regulated ZnO Nanowire Growth
description	Abstract The resistance of the bearing is a significant factor affecting the performance of the ball-disk rotor gyroscope. The micro and nano combined surface with low surface energy material modifications can be hydrophobic. This can reduce the drag when the bearing is lubricated by deionized water. Laser ablation method is utilized to form micron-scaled structures on the surface of the stainless steel rotor ball. And the nanostructures are formed by PEI (Polyetherimide) regulated ZnO nanowires growth. After low surface energy material modification, the water contact angle of processed surface was 163° and the sliding angle was less than 4°. The maximum rotational speed was enhanced by up to 82.77% at 1.5 W driving power. Experiments show that the superhydrophobic drag-reduction spherical bearing has good short-term reliability. At 5 V drive voltage, the bearing can extend the rotational speed of ball-disk rotor gyroscope to 35000 rpm, and maintain the normal operation for longer than 40 minutes. This is quite meaningful for short-term-work or one-time-use rotor gyroscopes.
format	article
author	Rui Weng Haifeng Zhang Yanjing Tuo Yang Wang Xiaowei Liu
author_facet	Rui Weng Haifeng Zhang Yanjing Tuo Yang Wang Xiaowei Liu
author_sort	Rui Weng
title	Superhydrophobic Drag-Reduction Spherical Bearing Fabricated by Laser Ablation and PEI Regulated ZnO Nanowire Growth
title_short	Superhydrophobic Drag-Reduction Spherical Bearing Fabricated by Laser Ablation and PEI Regulated ZnO Nanowire Growth
title_full	Superhydrophobic Drag-Reduction Spherical Bearing Fabricated by Laser Ablation and PEI Regulated ZnO Nanowire Growth
title_fullStr	Superhydrophobic Drag-Reduction Spherical Bearing Fabricated by Laser Ablation and PEI Regulated ZnO Nanowire Growth
title_full_unstemmed	Superhydrophobic Drag-Reduction Spherical Bearing Fabricated by Laser Ablation and PEI Regulated ZnO Nanowire Growth
title_sort	superhydrophobic drag-reduction spherical bearing fabricated by laser ablation and pei regulated zno nanowire growth
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/def06c2720ba4967a502fe255eb05669
work_keys_str_mv	AT ruiweng superhydrophobicdragreductionsphericalbearingfabricatedbylaserablationandpeiregulatedznonanowiregrowth AT haifengzhang superhydrophobicdragreductionsphericalbearingfabricatedbylaserablationandpeiregulatedznonanowiregrowth AT yanjingtuo superhydrophobicdragreductionsphericalbearingfabricatedbylaserablationandpeiregulatedznonanowiregrowth AT yangwang superhydrophobicdragreductionsphericalbearingfabricatedbylaserablationandpeiregulatedznonanowiregrowth AT xiaoweiliu superhydrophobicdragreductionsphericalbearingfabricatedbylaserablationandpeiregulatedznonanowiregrowth
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Superhydrophobic Drag-Reduction Spherical Bearing Fabricated by Laser Ablation and PEI Regulated ZnO Nanowire Growth

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