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Transparent Thermally Tunable Microwave Absorber Prototype Based on Patterned VO2 Film Article

Zhengang Lu, Yilei Zhang, Heyan Wang, Chao Xia, Yunfei Liu, Shuliang Dou, Yao Li, Jiubin Tan

Engineering 2023, Volume 29, Issue 10,   Pages 198-206 doi: 10.1016/j.eng.2022.10.005

Abstract: are ideal, although having a fixed absorption performance limits their applicability.its reflection loss at 15.06 GHz can be thermally tuned from –4.257 to –60.179 dB, and near-unityabsorption is achieved at 523.75 K.Adjusting only the patterned VO2 film duty cycle can change the temperature of near-unityabsorption.

Keywords: Tunable microwave absorber     VO2 film     Optical transparent     Near unity absorption     Large modulation    

Study on the Path of “Near-zero Emission” Coal-based Clean Energy Ecosystem Development

Zhang Yu-zhuo

Frontiers of Engineering Management 2014, Volume 1, Issue 1,   Pages 37-41 doi: 10.15302/J-FEM-2014007

Abstract: Developing a "near-zero emission" coal-based clean energy ecosystem bears great significance for thearticle delves into the development strategy, implementation pathways and key priorities of China's "near-zero

Keywords: near-zero emission     clean energy ecosystem     study on the path    

Research and industrialization of near-net rolling technology used in shaft parts

Zhenghuan HU, Baoyu WANG, Zhenhua ZHENG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 17-24 doi: 10.1007/s11465-018-0480-3

Abstract:

Shaft part rolling is an efficient and green near-net shaping technology offering many advantages,

Keywords: cross wedge rolling     skew rolling     near-net rolling     shaft part    

β-Nickel hydroxide cathode material for nano-suspension redox flow batteries

Yue LI, Cheng HE, Elena V. TIMOFEEVA, Yujia DING, Javier PARRONDO, Carlo SEGRE, Vijay RAMANI

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 401-409 doi: 10.1007/s11708-017-0496-0

Abstract: The phase transformations occurring during charge/discharge were investigated using X-ray absorptionspectroscopy to obtain the shift in the oxidation state of Ni (X-ray adsorption near edge structure,and the distances between Ni and surrounding atoms in charged and discharged states (extended X-ray absorption

Keywords: β-Ni(OH)2     scanning electronic microscopy (SEM)     X-ray diffraction (XRD)     X-ray adsorption nearedge structure (XANES)     extended X-ray absorption fine structure (EXAFS)    

Special issue: Near-net shaping technology

Dequn LI, Dongming GUO, Qingxue HUANG, Yanchun LOU

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 1-2 doi: 10.1007/s11465-018-0497-7

Determining casting defects in near-net shape casting aluminum parts by computed tomography

Jiehua LI, Bernd OBERDORFER, Daniel HABE, Peter SCHUMACHER

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 48-52 doi: 10.1007/s11465-018-0493-y

Abstract:

Three types of near-net shape casting aluminum parts were investigated by computed tomography to determinethird part, and this absence of defects indicates that semi-solid casting could produce high-quality near-netinvestigation demonstrated that computed tomography is an efficient method to determine casting defects in near-net

Keywords: near-net shape casting     aluminum parts     casting defects     low pressure die casting     die casting     semi-solid    

Nanostructured gold films exhibiting almost complete absorption of light at visible wavelengths

Hanbin Zheng, Christine Picard, Serge Ravaine

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 2,   Pages 247-251 doi: 10.1007/s11705-018-1710-2

Abstract: Nanostructured metal surfaces have been known to exhibit properties that deviate from that of the bulk material. By simply modifying the texture of a metal surface, various unique optical properties can be observed. In this paper, we present a simple two step electrochemical process combining electrodeposition and anodization to generate black gold surfaces. This process is simple, versatile and up-scalable for the production of large surfaces. The black gold films have remarkable optical behavior as they absorb more than 93% of incident light over the entire visible spectrum and also exhibit no specular reflectance. A careful analysis by scanning electron microscopy reveals that these unique optical properties are due to their randomly rough surface, as they consist in a forest of dendritic microstructures with a nanoscale roughness. This new type of black films can be fabricated to a large variety of substrates, turning them to super absorbers with potential applications in photovoltaic solar cells or highly sensitive detectors and so on.

Keywords: nanostructuration     light absorption     coating     gold     electrodeposition     anodization    

Effect of light scattering on the performance of a direct absorption solar collector

Kwang Hyun WON, Bong Jae LEE

Frontiers in Energy 2018, Volume 12, Issue 1,   Pages 169-177 doi: 10.1007/s11708-018-0527-5

Abstract: The collector efficiency of a direct absorption solar collector (DASC) is very sensitive to optical propertiesof the working fluid, such as absorption and scattering coefficients.metal, however, the scattering cross-section of metallic nanoparticles could be comparable to their absorptionperformance if the scattering coefficient of nanofluid is carefully engineered depending on its value of the absorption

Keywords: direct absorption solar collector     plasmonic nanofluid     light scattering    

Chemisorption solid materials for hydrogen storage near ambient temperature: a review

Yiheng ZHANG, Shaofei WU, Liwei WANG, Xuefeng ZHANG

Frontiers in Energy 2023, Volume 17, Issue 1,   Pages 72-101 doi: 10.1007/s11708-022-0835-7

Abstract: chemisorption technologies for hydrogen storage, especially high-efficiency hydrogen storage of fuel cells in nearHowever, there are several challenges to be solved at near ambient temperature, i.e., unclear hydrogenreview, the characteristics and modification methods of chemisorption hydrogen storage materials at near

Keywords: hydrogen storage capacity     chemisorption     near-ambient-temperature     modification methods     alloy hydrides    

Factors influencing near infrared spectroscopy analysis of agro-products: a review

Xiao XU, Lijuan XIE, Yibin YING

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 2,   Pages 105-115 doi: 10.15302/J-FASE-2019255

Abstract:

The near infrared (NIR) spectroscopy technique has wide applications in agriculture with the advantages

Keywords: agro-product     error source     influence factor     near infrared spectroscopy    

Performance analysis of solar absorption-subcooled compression hybrid refrigeration system in subtropical

Xiangyang YE,Liming LIU,Zeyu LI

Frontiers in Energy 2019, Volume 13, Issue 1,   Pages 185-192 doi: 10.1007/s11708-017-0452-z

Abstract: Solar absorption-subcooled compression hybrid refrigeration system is a new type of efficient and economicalAs the condensation temperature ranges from 38°C to 50°C, the working time fraction of the absorptionThe average COP of the absorption subsystem is improved from 0.366 to 0.407.However, when the temperature of the absorption increases from 36°C to 48°C, the average COP of hybridMoreover, the working time fraction of the absorption subsystem decreases from 80% to 71.7%.

Keywords: solar     absorption-subcooled     compression hybrid     dynamic simulation     performance analysis    

Implementation of sinh method in integration space for boundary integrals with near singularity in potential

Guizhong XIE,Dehai ZHANG,Jianming ZHANG,Fannian MENG,Wenliao DU,Xiaoyu WEN

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 412-422 doi: 10.1007/s11465-016-0396-8

Abstract: However, boundary integrals with near singularity need to be calculated accurately and efficiently toequation if the location of the projection point is outside the element, where boundary integrals with nearResults demonstrate that our method is effective for regularizing the boundary integrals with near singularity

Keywords: computer aided engineering (CAE)     boundary element method (BEM)     near singularity     sinh method     coordinate    

Modeling of oil near-infrared spectroscopy based on similarity and transfer learning algorithm

Yifei Wang, Kai Wang, Zhao Zhou, Wenli Du

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 599-607 doi: 10.1007/s11705-019-1807-2

Abstract: Near-infrared spectroscopy mainly reflects the frequency-doubled and total-frequency absorption informationof hydrogen-containing groups (O‒H, C‒H, N‒H, S‒H) in organic molecules for near-infrared lights withIn order to achieve rapid modeling of near-infrared spectroscopy and based on historical data of different

Keywords: near-infrared spectroscopy     transfer learning     similarity     modeling    

Effect of fine solid particles on absorption rate of gaseous CO

LU Sumin, MA Youguang, SHEN Shuhua, ZHU Chunying

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 368-372 doi: 10.1007/s11705-008-0067-3

Abstract: The influence of the properties of solid particles in slurry on the absorption of CO in the slurry wasThe absorption experiments were carried out in three different slurries consisting of water, cyclohexaneThe experimental results show that the active carbon particles could enhance the absorption rate of gaseousHowever, it was observed that the active alumina and silica gel particles could enhance the absorptionThese phenomena indicate that the solid particles, which could enhance the gaseous CO absorption rate

Keywords: constant     influence     soybean     solvent     concentration    

Improving retrieval precision of NO

Jinpeng YANG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1,   Pages 92-96 doi: 10.1007/s11465-009-0001-5

Abstract: The NO density error retrieved by the traditional method of differential optical absorption spectroscopy

Keywords: absorption structure     low-frequency structure     absorption cross-section     NO2 density    

Title Author Date Type Operation

Transparent Thermally Tunable Microwave Absorber Prototype Based on Patterned VO2 Film

Zhengang Lu, Yilei Zhang, Heyan Wang, Chao Xia, Yunfei Liu, Shuliang Dou, Yao Li, Jiubin Tan

Journal Article

Study on the Path of “Near-zero Emission” Coal-based Clean Energy Ecosystem Development

Zhang Yu-zhuo

Journal Article

Research and industrialization of near-net rolling technology used in shaft parts

Zhenghuan HU, Baoyu WANG, Zhenhua ZHENG

Journal Article

β-Nickel hydroxide cathode material for nano-suspension redox flow batteries

Yue LI, Cheng HE, Elena V. TIMOFEEVA, Yujia DING, Javier PARRONDO, Carlo SEGRE, Vijay RAMANI

Journal Article

Special issue: Near-net shaping technology

Dequn LI, Dongming GUO, Qingxue HUANG, Yanchun LOU

Journal Article

Determining casting defects in near-net shape casting aluminum parts by computed tomography

Jiehua LI, Bernd OBERDORFER, Daniel HABE, Peter SCHUMACHER

Journal Article

Nanostructured gold films exhibiting almost complete absorption of light at visible wavelengths

Hanbin Zheng, Christine Picard, Serge Ravaine

Journal Article

Effect of light scattering on the performance of a direct absorption solar collector

Kwang Hyun WON, Bong Jae LEE

Journal Article

Chemisorption solid materials for hydrogen storage near ambient temperature: a review

Yiheng ZHANG, Shaofei WU, Liwei WANG, Xuefeng ZHANG

Journal Article

Factors influencing near infrared spectroscopy analysis of agro-products: a review

Xiao XU, Lijuan XIE, Yibin YING

Journal Article

Performance analysis of solar absorption-subcooled compression hybrid refrigeration system in subtropical

Xiangyang YE,Liming LIU,Zeyu LI

Journal Article

Implementation of sinh method in integration space for boundary integrals with near singularity in potential

Guizhong XIE,Dehai ZHANG,Jianming ZHANG,Fannian MENG,Wenliao DU,Xiaoyu WEN

Journal Article

Modeling of oil near-infrared spectroscopy based on similarity and transfer learning algorithm

Yifei Wang, Kai Wang, Zhao Zhou, Wenli Du

Journal Article

Effect of fine solid particles on absorption rate of gaseous CO

LU Sumin, MA Youguang, SHEN Shuhua, ZHU Chunying

Journal Article

Improving retrieval precision of NO

Jinpeng YANG

Journal Article