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Leidenfrost drops on micro/nanostructured surfaces

Vishal TALARI, Prakhar BEHAR, Yi LU, Evan HARYADI, Dong LIU

Frontiers in Energy 2018, Volume 12, Issue 1, Pages 22-42 doi: 10.1007/s11708-018-0541-7

Abstract: This paper presents a comprehensive review of recent literature concerning the Leidenfrost drops on micro/nanostructured surfaces with an emphasis on the enhancement of the Leidenfrost temperature.Then, the major findings of the influence of various micro/nanoscale surface structures on the LeidenfrostIt was concluded that multiscale hierarchical surfaces hold the best promise to significantly boost theLeidenfrost temperature by combining the advantages of both micro- and nanoscale structures.

Keywords： Leidenfrost drop Leidenfrost temperature heat transfer enhancement micro/nanostructured surfaces

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Kornel Ehmann: Micro-textured Engineered Surfaces（2019.10.10）

23 Apr 2021

Keywords：高性能制造

Wireless passive flexible accelerometer fabricated using micro-electro-mechanical system technology forbending structure surfaces Research Article

Chen LI, Mangu JIA, Yingping HONG, Yanan XUE, Jijun XIONG,lichen@nuc.edu.cn

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 5, Pages 801-809 doi: 10.1631/FITEE.2100236

Abstract: We propose an inductor-capacitor (LC) wireless passive , which eliminates the difficulty in measuring the acceleration on the surface of a bending structure. The accelerometer is composed of a flexible polyimide (PI) substrate and a planar spiral inductance coil (thickness 300 nm), made using . It can be bent or folded at will, and can be attached firmly to the surface of objects with a bending structure. The principle of radio frequency wireless transmission is used to measure the acceleration signal by changing the distance between the accelerometer and the antenna. Compared with other accelerometers with a lead wire, the accelerometer can prevent the lead from falling off in the course of vibration, thereby prolonging its service life. Through establishment of an experimental platform, when the distance between the antenna and accelerometer was 5 mm, the characterization of the surface of bending structures demonstrated the sensing capabilities of the accelerometer at accelerations of 20‒100 m/s. The results indicate that the acceleration and peak-to-peak output voltage were nearly linear, with accelerometer sensitivity reaching 0.27 mV/(m·s). Moreover, the maximum error of the accelerometer was less than 0.037%.

Keywords： Bending structure surfaces Flexible accelerometer Micro-electro-mechanical system (MEMS) technology

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Development of and Perspective on High-Performance Nanostructured Bainitic Bearing Steel Review

Fucheng Zhang, Zhinan Yang

Engineering 2019, Volume 5, Issue 2, Pages 319-328 doi: 10.1016/j.eng.2018.11.024

Abstract: Nanostructured bainitic bearing steel (NBBS), which is a newly developed bearing steel, not only possesses

Keywords： Nanostructured bainitic bearing steel Bearing steel Nanostructured bainite Development

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Thermal radiative properties of metamaterials and other nanostructured materials: A review

Ceji FU, Zhuomin M. ZHANG

Frontiers in Energy 2009, Volume 3, Issue 1, Pages 11-26 doi: 10.1007/s11708-009-0009-x

Abstract: properties of electromagnetic waves and thermal emission spectra using one-, two-, or three-dimensional microon recent developments in metamaterials–manmade materials with exotic optical properties, and other nanostructured

Keywords： metamaterial nanostructured material thermal radiative property radiative energy transfer

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Preface to special issue on “Engineering Nanostructured Materials for Advanced Energy and Environmental

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11, Pages 1621-1622 doi: 10.1007/s11705-023-2365-1

Abstract: Preface to special issue on “Engineering Nanostructured Materials for Advanced Energy and Environmental

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New nanostructured sorbents for desulfurization of natural gas

Lifeng WANG, Ralph T. YANG

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 1, Pages 8-19 doi: 10.1007/s11705-014-1411-4

Abstract: Desulfurization of natural gas is achieved commercially by absorption with liquid amine solutions. Adsorption technology could potentially replace the solvent extraction process, particularly for the emerging shale gas wells with production rates that are generally lower than that from the large conventional reservoirs, if a superior adsorbent (sorbent) is developed. In this review, we focus our discussion on three types of sorbents: metal-oxide based sorbents, Cu/Ag-based and other commercial sorbents, and amine-grafted silicas. The advantages and disadvantages of each type are analyzed. Possible approaches for future developments to further improve these sorbents are suggested, particularly for the most promising amine-grafted silicas.

Keywords： desulfurization natural gas desulfurization hydrogen sulfide sorbent amine-silica sorbent

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Structural engineering of transition metal-based nanostructured electrocatalysts for efficient water

Yueqing Wang, Jintao Zhang

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4, Pages 838-854 doi: 10.1007/s11705-018-1746-3

Abstract: Water splitting is a highly promising approach for the generation of sustainable, clean hydrogen energy. Tremendous efforts have been devoted to exploring highly efficient and abundant metal oxide electrocatalysts for oxygen evolution and hydrogen evolution reactions to lower the energy consumption in water splitting. In this review, we summarize the recent advances on the development of metal oxide electrocatalysts with special emphasis on the structural engineering of nanostructures from particle size, composition, crystalline facet, hybrid structure as well as the conductive supports. The special strategies relay on the transformation from the metal organic framework and ion exchange reactions for the preparation of novel metal oxide nanostructures with boosting the catalytic activities are also discussed. The fascinating methods would pave the way for rational design of advanced electrocatalysts for efficient water splitting.

Keywords： water splitting structure engineering metal organic framework ion exchange synergistic effect hybrid structure conductive supports

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Modeling nanostructured catalyst layer in PEMFC and catalyst utilization

Jiejing ZHANG, Pengzhen CAO, Li XU, Yuxin WANG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3, Pages 297-302 doi: 10.1007/s11705-011-1201-1

Abstract: A lattice model of the nanoscaled catalyst layer structure in proton exchange membrane fuel cells (PEMFC) was established by Monte Carlo method. The model takes into account all the four components in a typical PEMFC catalyst layer: platinum (Pt), carbon, ionomer and pore. The elemental voxels in the lattice were set fine enough so that each average sized Pt particulate in Pt/C catalyst can be represented. Catalyst utilization in the modeled catalyst layer was calculated by counting up the number of facets of Pt voxels where “three phase contact” are met. The effects of some factors, including porosity, ionomer content, Pt/C particle size and Pt weight percentage in the Pt/C catalyst, on catalyst utilization were investigated and discussed.

Keywords： catalyst layer PEM fuel cell lattice model Monte Carlo method catalyst utilization

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Geosynthetics used to stabilize vegetated surfaces for environmental sustainability in civil engineering

Jie HAN,Jun GUO

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 1, Pages 56-65 doi: 10.1007/s11709-016-0380-8

Abstract: To enhance environmental sustainability, vegetation has been increasingly planted on the facing or surfacessurficial soil stabilization while vegetation provides green appearance and erosion protection of earth surfacesbetween geosynthetics and vegetation is important for the sustainability of the earth and building wall surfacesthe current practice and research in the geosynthetic stabilization of vegetated earth and building surfacesgeosynthetic-stabilized unpaved shoulders and parking lots, and geosynthetic-stabilized vegetated building surfaces

Keywords： erosion geosynthetic stabilization sustainability vegetation

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Contact of surfaces and contact characteristics of offset surfaces

CAO Lixin, GONG Hu, LIU Jian

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 3, Pages 318-324 doi: 10.1007/s11465-008-0067-5

Abstract: Based on differential geometry, the contact problems of two surfaces are discussed in this paper.The relationship between the contact status of two surfaces and that of offset surfaces are also analyzedFor point contact two surfaces, the calculation equation for the second order remained error is givenand curvatures of the two surfaces are the same along the contact curve.If two surfaces keep the second order line contact, their two offset surfaces will also keep the second

Keywords： relative important geometrical relationship geometrical invariant calculation

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Optimal localization of complex surfaces in CAD-based inspection

XU Jinting, LIU Weijun, SUN Yuwen

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4, Pages 426-433 doi: 10.1007/s11465-008-0068-4

Abstract: requires the optimal localization of the measured surface related to the design surface so that the two surfaces

Keywords： deviation comparison non-linear localization inspection

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Strategies on designing multifunctional surfaces to prevent biofilm formation? ?

Yang Lu,Zhanguo Yue,Wei Wang,Zhiqiang Cao

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3, Pages 324-335 doi: 10.1007/s11705-015-1529-z

Abstract: reagents and surface coatings have been developed to kill bacteria and/or limit their interaction with surfaces

Keywords： antimicrobial surface multifunctional

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Interpolation of a spline developable surface between a curve and two rulings

Alicia CANTÓN,Leonardo FERNÁNDEZ-JAMBRINA

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 3, Pages 173-190 doi: 10.1631/FITEE.14a0210

Abstract: In this paper we address the problem of interpolating a spline developable patch bounded by a given spline curve and the first and the last rulings of the developable surface. To complete the boundary of the patch, a second spline curve is to be given. Up to now this interpolation problem could be solved, but without the possibility of choosing both endpoints for the rulings. We circumvent such difficulty by resorting to degree elevation of the developable surface. This is useful for solving not only this problem, but also other problems dealing with triangular developable patches.

Keywords： Developable surfaces Spline surfaces Blossoms

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Flexible micro flow sensor for micro aerial vehicles

Rong ZHU, Ruiyi QUE, Peng LIU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4, Pages 539-545 doi: 10.1007/s11465-017-0427-0

Abstract:

This article summarizes our studies on micro flow sensors fabricated on a flexible polyimide circuitThe micro flow sensor has merits of flexibility, structural simplicity, easy integrability with circuitsIn our study, we install the fabricated micro flow sensors on micro aerial vehicles (MAVs) to detect

Keywords： micro flow sensor flexible sensor surface flow sensing aerodynamic parameter micro aerial vehicle (MAV