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Anti-wear and friction performance of ZrO2nanoparticles as lubricant additive 认领 引用 被引量：13
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作者 Shiyu Ma Shaohua Zheng +1 位作者 Duxia Cao Hongna Guo 《Particuology》 SCIE EI CAS 2010年第5期468-472,共5页
The surface of ZrO2 nanoparticles was modified with silane coupling agent KH-560 by dispersing the nanoparticles in 20#machine oil.The tribological performance of the 20#machine oil with ZrO2 nanoparticles was evaluat... The surface of ZrO2 nanoparticles was modified with silane coupling agent KH-560 by dispersing the nanoparticles in 20#machine oil.The tribological performance of the 20#machine oil with ZrO2 nanoparticles was evaluated by a four-ball tester and a thrust-ring machine.The loss of the thrust-ring weight was measured by an electronic balance with a precision of 0.0001 g.The worn surface was examined under a metallographic microscope with 400-times magnification.The results showed that the average friction coefficient decreased by 27.34%,and that the weight loss of the thrust-ring indicated no wear or negative wear,the wear loss after six loads tests being-0.0163 g.The anti-wear(AW)and reducing friction(RF)abilities of the oil with ZrO2 nanoparticles addition were considerably improved,maximizing at an additive concentration of 0.5 wt%. 展开更多
关键词 Additive ZrO2nanoparticles Boundary lubrication Friction and wear
Stretchable hybrid platform-enabled interactive perception of strain sensing and visualization 认领 引用 被引量：3
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作者 Yikun Liu Yongju Gao +9 位作者 Beom Jin Kim Meili Xia Yunlong Zhou Yongjing Zhang Yang Li Jianying Huang Duxia Cao Songfang Zhao Jong-Hyun Ahn Yuekun Lai 《SmartMat》 2024年第4期123-137,共15页
Human–machine interactive platforms that can sense mechanical stimuli visually and digitally are highly desirable.However,most existing interactive devices cannot satisfy the demands of tactile feedback and extended ... Human–machine interactive platforms that can sense mechanical stimuli visually and digitally are highly desirable.However,most existing interactive devices cannot satisfy the demands of tactile feedback and extended integration.Inspired by the mechanoluminescence(ML)function of cephalopod skin and the sensitive perception of microcracked slit-organs,a bioinspired stretchable interactive platform is developed by designing a stretchable poly(styrene-block-butadiene-block-styrene)/fluorescent molecule(SFM)composite followed by the in situ polymerization of pyrrole(Py)and deposition of carbon nanotubes(CNTs),which possesses a simple multilayered structure and quantitatively senses the applied strains via the variations of digital electrical resistance and visual fluorescence intensity.Using the strain-dependent microstructures derived from the synergistic interactions of the rigid PPy/CNTs functional layer and SFM,the SFM/PPy/CNTs-based platforms exhibit excellent strain-sensing performance manifested by a high gauge factor(GF=2.64×104),wide sensing range(-270%),fast responseecovery time(-155/195 ms),excellent stability(-15,000 cycles at 40%strain),and sensitive ML characteristics under ultraviolet illumination.Benefiting from the novel fusion of digital data and visual images,important applications,including the detection of wrist pulses and human motions,and information dual-encryption,are demonstrated.This study demonstrates the superiority of advanced structures and materials for realizing superior applications in wearable electronics. 展开更多
关键词 bioinspired structure fluorescence molecule interactive perception strain sensing visualization
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