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Rational Fabrication of Superhydrophobic nanocone Surface for Dynamic Water Repellency and Anti-icing Potential

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Journal of Bionic Engineering 2019年第1期16卷 27-37页

作者： Yuehan Xie Haifeng Chen Yizhou Shen Jie Tao Mingming Jin Yu Wu Wenqing Hou College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China Department of Materials Chemistry Qiuzhen SchoolHuzhou UniversityHuzhou 313000China School of Materials Science and Engineering Nanyang Technological UniversityNanyang Avenue 50 Singapore 639798Singapore Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites Nanjing Tech University Nanjing 210016China

In this work,a simple and economic route was presented to fabricate an anti-icing superhydrophobic surface with nanocone structures,which were constructed only by one-step facile method of hydrothermal treatment with zinc acetate on the aluminum *** modifying with fluoroalkylsilane (FAS-17),the nanocone structures with the appropriate size could induce the high superhydrophobicity with the water contact angle reaching 160.2° ± 0.4° and the sliding angle only being 1 ° ± 0.5°.Under the dynamic environments,the impact droplets could rapidly bounced off the surface with the shorter contact time of^1 0.6 ms,and it was mainly attributing to lower capillary adhesive force (water adhesion force of 4.1 μN) induced by the open system of nanocone ***,the superhydrophobic nanocone surfaces were verified to be a promising anti-icing/icephobic materials,on which the water droplets needed to spend the time of ~517 s to complete the entire freezing process at-10 ℃,displaying the increased ~50 times of icing-delay performance comparing with untreated *** if ice finally was formed on the superhydrophobic nanocone surfaces,it could be easily removed away with lower ice adhesion of^45 *** repeatable measurement of ice adhesion strength on the same place of the superhydrophobic surface is still far less than the surface ice adhesion of smooth substrate,exhibiting better stability.

关键词： superhydrophobic nanocone dynamic water repellency anti-icing potential

Silica nanocone array as a template for fabricating a plasmon induced hot electron photodetector

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Photonics Research 2019年第3期7卷 294-299页

作者： ZHIQIANG YANG KANG DU FANFAN LU YANG PANG SHIJIA HUA XUETAO GAN WENDING ZHANG SOO JIN CHUA TING MEI Key Laboratory of Space Applied Physics and Chemistry Ministry of Education and Shaanxi Key Laboratory of Optical Information TechnologySchool of Science Northwestern Polytechnical University Department of Electrical and Computer Engineering National University of Singapore LEES Program Singapore-MIT Alliance for Research & Technology (SMART)

Plasmon induced hot electrons have attracted a great deal of interest as a novel route for photodetection and lightenergy harvesting. Herein, we report a hot electron photodetector in which a large array of nanocones deposited sequentially with aluminum, titanium dioxide, and gold films can be integrated functionally with nanophotonics and microelectronics. The device exhibits a strong photoelectric response at around 620 nm with a responsivity of 180 μA/W under short-circuit conditions with a significant increase under 1 V reverse bias to 360 μA/W. The increase in responsivity and a red shift in the peak value with increasing bias voltage indicate that the bias causes an increase in the hot electron tunneling effect. Our approach will be advantageous for the implementation of the proposed architecture on a vast variety of integrated optoelectronic devices.

关键词： Silica nanocone array plasmon induced hot electron photodetector

Local electric field and configuration of CO molecules adsorbed on a nanostructured surface with nanocones

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Chinese Physics B 2009年第9期18卷 3970-3974页

作者：游荣义黄晓菁 Department of Physics School of ScienceJimei University

Based on the nanostructured surface model that the （platinum, Pt） nanocones grow out symmetrically from a plane substrate, the local electric field near the conical nanoparticle surface is computed and discussed. On the basis of these results, the adsorbed CO molecules are modelled as dipoles, and three kinds of interactions, i.e. interactions between dipoles and local electric field, between dipoles and dipoles, as well as between dipoles and nanostructured substrate, are taken into account. The spatial configuration of CO molecules adsorbed on the nanocone surface is then given by Monte-Carlo simulation. Our results show that the CO molecules adsorbed on the nanocone surface cause local agglomeration under the action of an external electric field, and this agglomeration becomes more compact with decreasing conical angle, which results in a stronger interaction among molecules. These results serve as a basis for explaining abnormal phenomena such as the abnormal infrared effect （AIRE）, which was found when CO molecules were adsorbed on the nanostructured transition-metal surface.

关键词： metallic nanostructured surface nanocone adsorbed molecules local electric field

Highly active cobalt-doped nickel sulfide porous nanocones for high-performance quasi-solid-state zinc-ion batteries

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Journal of Energy Chemistry 2022年第3期31卷 237-249,I0008页

作者： Xin Tong Yun Li Ning Pang Yang Zhou Dajun Wu Dayuan Xiong Shaohui Xu Lianwei Wang Paul K.Chu Key Laboratory of Polar Materials and Devices(MOE) Department of ElectronicsEast China Normal UniversityShanghai 200241China Jiangsu Laboratory of Advanced Functional Materials School of Electronic and Information EngineeringChangshu Institute of TechnologyChangshu 215500JiangsuChina School of Physics and Electronic Engineering Hanshan Normal UniversityChaozhou 521041GuangdongChina Department of Physics Department of Materials Science and Engineeringand Department of Biomedical EngineeringCity University of Hong KongKowloon 999077Hong KongChina

Flexible quasi-solid zinc-ion batteries(ZIBs)have large potential in power applications due to the low price,wearable nature,safety,and high ***,the use of transition metal sulfide cathodes in ZIBs has not been studied extensively and the underlying mechanism and theoretical basis of this type of batteries are not well ***,a highly active cobalt-doped Ni_(3)S_(2) porous nanocone framework(C12NS)is designed and demonstrated as a zinc-ion battery ***-principles calculation and experiments reveal that the cobalt dopant improves the battery properties *** assembled flexible zinc-ion battery exhibits a high specific capacity of 453.3 mAh g^(−1)at a current density of 0.4 A g^(−1)in as well as excellent cycling stability as manifested by a capacity retention ratio of 89.5%at a current density of 4 A g^(−1)after 5000 *** peak energy density of 553.9 Wh kg^(−1)is also superior to those of most recently reported NiCo-based zinc-ion *** importantly,the flexible battery can be operated under severe mechanical bending and even continues to work after physical puncturing without showing *** exciting results not only reveal a novel design of cathode materials for zinc-based batteries,but also suggest their immense commercial potential in portable and wearable electronics.

关键词： Zn-ion battery Quasi-solid electrolyte nanocone Doping Wearable electronic

Controlled growth and photoluminescence of highly oriented arrays of ZnO nanocones with different diameters

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Science China(Technological Sciences) 2009年第5期52卷 1264-1272页

作者： MA JunHu YANG HeQing SONG YuZhe LI Li XIE XiaoLi LIU RuiNi WANG LinFang Key Laboratory of Macromolecular Science of Shaanxi Province School of Chemistry and Materials ScienceShaanxi Normal UniversityXi’an 710062China

Large-scale oriented ZnO nanocone arrays were directly grown on zinc substrate through a hydrothermal reaction of Zn foil with aqueous butylamine solution (3 mol/L) at 100–180 °C for 12 h. The synthesized products were characterized with X-ray diffraction, Raman spectrum, scanning electron microscopy and transmission electron microscopy. The results showed that the ZnO nanocones were single crystalline with the wurtzite structure and grown along the [0001] direction. The diameter of nanocones is decreased with increasing the reaction temperature. A possible growth mechanism was also proposed to account for the formation of the ZnO nanocone arrays. The photoluminescence spectra of the ZnO nanocone arrays were studied at room temperature, two UV emission bands at 377 and 396 nm assigned to free exciton emission and exciton-exciton collision, respectively, and phonon replicas associated with 2-E2 phonon were observed in the PL spectra.

关键词： ZnO ZnO nanocone arrays butylamine photoluminescence

Unique electrical properties of nanostructured diamond cones

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Chinese Physics B 2013年第9期22卷 111-119页

作者：顾长志王强李俊杰夏钶 Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of Sciences Department of Applied Physics Harbin Institute of Technology at Weihai Department of Physics Beijing Normal University

The preparation and electrical properties of diamond nanocones are reviewed, including a maskless etching pro- cess and mechanism of large-area diamond conical nanostructure arrays using a hot filament chemical vapor deposition （HFCVD） system with negatively biased substrates, and the field electron emission, gas sensing, and quantum transport properties of a diamond nanocone array or an individual diamond nanocone. Optimal cone aspect ratio and array density are investigated, along with the relationships between the cone morphologies and experimental parameters, such as the CH4/H2 ratio of the etching gas, the bias current, and the gas pressure. The reviewed experiments demonstrate the possi- bility of using nanostructured diamond cones as a display device element, a point electron emission source, a gas sensor or a quantum device.

关键词： diamond nanocone quantum device

Plasma-enhanced Deposition of Nano-Structured Carbon Films

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Plasma Science and Technology 2005年第1期7卷 2660-2664页

作者：杨巧勤肖持进 A.Hirose Plasma Physics Laboratory University of Saskatchewan 116 Science Place Saskatoon SK S7N 5E2 Canada

By pre-treating substrate with different methods and patterning the catalyst, selective and patterned growth of diamond and graphitic nano-structured carbon films have been realized through DC Plasma-Enhanced Hot Filament Chemical Vapor Deposition (PE-HFCVD). Through two-step processing in an HFCVD reactor, novel nano-structured composite diamond films containing a nanocrystalline diamond layer on the top of a nanocone diamond layer have been synthesized. Well-aligned carbon nanotubes, diamond and graphitic carbon nanocones with controllable alignment orientations have been synthesized by using PE-HFCVD. The orientation of the nanostructures can be controlled by adjusting the working pressure. In a Microwave Plasma Enhanced Chemical Vapor Deposition (MW-PECVD) reactor, high-quality diamond films have been synthesized at low temperatures (310℃-550℃) without adding oxygen or halogen gas in a newly developed processing technique. In this process, carbon source originates from graphite etching, instead of hydrocarbon. The lowest growth temperature for the growth of nanocrystalline diamond films with a reasonable growth rate without addition of oxygen or halogen is 260℃.

关键词： nanocrystalline nanotube nanocone diamond film graphitic carbon film microwave CVD hot filament CVD