Search Results - "Optics and laser technology"

Optical fiber sensing for marine environment and marine structural health monitoring: A review by Min, Rui, Liu, Zhengyong, Pereira, Luis, Yang, Chenkun, Sui, Qi, Marques, Carlos

“…•Optical fiber sensors have several advantages for marine observation.•Marine gives a new opportunity for optical fiber sensing technology.•Overview about…”
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Manufacturing of Ti3SiC2 lubricated Co-based alloy coatings using laser cladding technology by Li, X., Zhang, C.H., Zhang, S., Wu, C.L., Liu, Y., Zhang, J.B., Babar Shahzad, M.

“…•Co-based composites coatings were fabricated on 35CrMo steel by laser cladding.•The addition of Ti3SiC2 led to reinforcement and lubrication of Co-based…”
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Recent trends in laser cladding and surface alloying by Siddiqui, Anas Ahmad, Dubey, Avanish Kumar

“…•Critical applications require materials with superior surface characteristics.•High energy density and cooling rate make lasers suitable for such…”
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Review on residual stress in selective laser melting additive manufacturing of alloy parts by Fang, Ze-Chen, Wu, Zhi-Lin, Huang, Chen-Guang, Wu, Chen-Wu

“…•The research on residual stress arising in additive manufacturing by SLM are reviewed.•The advantages and disadvantages of mainstream research methods are…”
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Recent research and development status of laser cladding: A review by Zhu, Lida, Xue, Pengsheng, Lan, Qing, Meng, Guiru, Ren, Yuan, Yang, Zhichao, Xu, Peihua, Liu, Zhe

“…•The simulation, monitoring and control of laser cladding process are reviewed.•The defects of the cladding layer can be reduced by the assistance of external…”
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Ultra long infrared metamaterial absorber with high absorption and broad band based on nano cross surrounding by Liang, Shiri, Xu, Feng, Yang, Hua, Cheng, Shubo, Yang, Wenxing, Yi, Zao, Song, Qianjv, Wu, Pinghui, Chen, Jing, Tang, Chaojun

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An image compression and encryption algorithm based on chaotic system and compressive sensing by Gong, Lihua, Qiu, Kaide, Deng, Chengzhi, Zhou, Nanrun

“…•An image compression and encryption algorithm based on chaotic system and compressive sensing is presented.•The bitwise XOR operation and a pixel-scrambling…”
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Six-band rotationally symmetric tunable absorption film based on AlCuFe quasicrystals by Li, Wenxin, Xu, Feng, Cheng, Shubo, Yang, Wenxing, Liu, Bin, Liu, Mengsi, Yi, Zao, Tang, Bin, Chen, Jing, Sun, Tangyou

“…[Display omitted] •According to CST calculations, the absorption film has six absorption peaks in the terahertz band and exhibits polarization incoherence,…”
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Microstructure and high temperature wear behaviour of in-situ TiC reinforced AlCoCrFeNi-based high-entropy alloy composite coatings fabricated by laser cladding by Liu, Hao, Liu, Jian, Chen, Peijian, Yang, Haifeng

“…•The in-situ TiC particles are synthesized by laser cladding.•The spinodal decomposition structure is found in the composite coatings.•The effect of Ti doping…”
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Laser additive manufacturing of compositionally graded AlCrFeMoVx (x = 0 to 1) high-entropy alloy system by Gwalani, Bharat, Soni, Vishal, Waseem, Owais Ahmed, Mantri, Srinivas Aditya, Banerjee, Rajarshi

“…•Laser additive processing for high-throughput analysis of high entropy alloys.•A combinatorial approach for assessing…”
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Vanadium dioxide-based terahertz metasurfaces for manipulating wavefronts with switchable polarization by Nie, Ruixing, He, Canhui, Zhang, Runxuan, Song, Zhengyong

“…•VO2-based metasurfaces are presented for switchable wavefronts.•Gradient metasurface realizes switching between anomalous reflection and specular…”
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Laser beam oscillating welding of 5A06 aluminum alloys: Microstructure, porosity and mechanical properties by Wang, Zhimin, Oliveira, J.P., Zeng, Zhi, Bu, Xianzheng, Peng, Bei, Shao, Xinyu

“…[Display omitted] •Welding porosity decreases because of a relative steady keyhole during laser beam oscillation.•The weld presents smooth surface without…”
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Modeling and numerical study of keyhole-induced porosity formation in laser beam oscillating welding of 5A06 aluminum alloy by Ke, Wenchao, Bu, Xianzheng, Oliveira, J.P., Xu, WeiGang, Wang, Zhimin, Zeng, Zhi

“…[Display omitted] •A hybrid heat source model was proposed to simulate the weld profile effectively.•A numerical model was developed for laser welding with and…”
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Influence of processing parameters on surface texture homogeneity using Direct Laser Interference Patterning by Aguilar-Morales, Alfredo I., Alamri, Sabri, Kunze, Tim, Lasagni, Andrés Fabián

“…•Fabrication of homogeneous periodic microstructures using nanosecond laser sources.•Homogeneity parameters and their correlation with DLIP parameters are…”
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Recent advances in photonic crystal optical devices: A review by Butt, M.A., Khonina, S.N., Kazanskiy, N.L.

“…•An up to date review on photonic devices based on Photonic Crystals.•Small bent radius which leads to the development of dense integrated circuit.•Photonic…”
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An approach for de-noising and contrast enhancement of retinal fundus image using CLAHE by Sonali, Sahu, Sima, Singh, Amit Kumar, Ghrera, S.P., Elhoseny, Mohamed

“…•Proposed a noise removal and contrast enhancement algorithm for color fundus image.•Our method uses integration of filters and contrast limited adaptive…”
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Direct laser interference patterning of stainless steel by ultrashort pulses for antibacterial surfaces by Peter, Alexander, Lutey, Adrian H.A., Faas, Sebastian, Romoli, Luca, Onuseit, Volkher, Graf, Thomas

“…•Direct Laser Interference Patterning (DLIP) is performed on stainless steel.•Periodic ‘cones’ and ‘holes’ with period ~850 nm are produced over areas of…”
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3-Dimensional heat transfer modeling for laser powder-bed fusion additive manufacturing with volumetric heat sources based on varied thermal conductivity and absorptivity by Zhang, Zhidong, Huang, Yuze, Rani Kasinathan, Adhitan, Imani Shahabad, Shahriar, Ali, Usman, Mahmoodkhani, Yahya, Toyserkani, Ehsan

“…•Eight 3D heat sources used for simulating Laser Powder-Bed Fusion are compared.•New equations for varied thermal conductivity and laser absorptivity is…”
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Investigation of terahertz high Q-factor of all-dielectric metamaterials by Leng, Jin, Peng, Jun, Jin, An, Cao, Duo, Liu, Dejun, He, Xiaoyong, Lin, Fangting, Liu, Feng

“…•The asymmetric Si-SiO2 block all-dielectric metamaterial excites Fano resonance with a Q-factor of over 270.•Carrier concentration of Si block has a…”
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A new one-dimensional chaotic map for image encryption scheme based on random DNA coding by Liang, Qin, Zhu, Congxu

“…•A new 1D sine–cosine chaotic map (SCCM) with better performance is proposed.•An image encryption algorithm based on SCCM and random DNA operations is…”
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