Optics and Laser Technology最新文献_第4页

Development of highly sensitive and stable patterned PDMS flexible strain sensors for motion monitoring via laser direct writing 通过激光直写技术开发用于运动监测的高灵敏度、高稳定性图案化 PDMS 柔性应变传感器

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2024-11-26 DOI: 10.1016/j.optlastec.2024.112212

Zhaoyan Li , Xiaozhu Xie , Jincheng Xiao , Yizhi Zeng , Yajun Huang

{"title":"Development of highly sensitive and stable patterned PDMS flexible strain sensors for motion monitoring via laser direct writing","authors":"Zhaoyan Li , Xiaozhu Xie , Jincheng Xiao , Yizhi Zeng , Yajun Huang","doi":"10.1016/j.optlastec.2024.112212","DOIUrl":"10.1016/j.optlastec.2024.112212","url":null,"abstract":"<div><div>Flexible strain sensors have received widespread attention for their potential applications in wearables, human–computer interaction, and healthcare. However, achieving a good balance between sensitivity, stretchability, and stability remains challenging. Here, we report a cost-effective and scalable fabrication strategy that combines laser direct writing (LDW) with 3D printing (3DP) to prepare various patterned Polydimethylsiloxane (P-PDMS) flexible strain sensors. By varying the laser parameters and processing paths, different microstructured patterns can be obtained, which significantly influence the sensor’s performance. By introducing patterned composite microstructures, the sensitivity of the strain sensor was increased by 339 % compared to the sensor without surface structures. Additionally, the strain sensors exhibit high stability and durability, a fast response time (140 ms), low hysteresis (0.009), and an ultra-low detection limit (0.0125 % strain). Besides, the sensors demonstrate excellent electrical performance and thermal stability. Based on their superior performance, we demonstrated their capability for real-time monitoring of human physiological signals. These findings successfully illustrate the potential of laser processing in fabricating complex microstructures, enabling the development of high-sensitivity flexible strain sensors for applications such as wearable health monitoring and human–computer interaction.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"182 ","pages":"Article 112212"},"PeriodicalIF":4.6,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kerr-lens mode-locked Yb:YAG ring-cavity thin-disk oscillator switchable between unidirectional and bidirectional operations 可在单向和双向操作之间切换的克尔透镜锁模 Yb:YAG 环腔薄盘振荡器

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2024-11-26 DOI: 10.1016/j.optlastec.2024.112167

Heyan Liu , Qingzhe Cui , Tingting Yang, Jingjie Hao, Hongshan Chen, Hongyu Liu, Shenao Zhang, Lisong Yan, Jinwei Zhang

引用次数: 0

Reliable wavelength detection method of sapphire fiber Bragg gratings using added multimode fiber 使用添加多模光纤的蓝宝石光纤布拉格光栅的可靠波长检测方法

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2024-11-26 DOI: 10.1016/j.optlastec.2024.112185

Zhuoda Li , Qingming Tan , Ziheng Yan , Jia He , Bin Du , Xizhen Xu , Shen Liu , Changrui Liao , Zhiyong Hu , Libo Gao , Yiping Wang , Jun He

{"title":"Reliable wavelength detection method of sapphire fiber Bragg gratings using added multimode fiber","authors":"Zhuoda Li , Qingming Tan , Ziheng Yan , Jia He , Bin Du , Xizhen Xu , Shen Liu , Changrui Liao , Zhiyong Hu , Libo Gao , Yiping Wang , Jun He","doi":"10.1016/j.optlastec.2024.112185","DOIUrl":"10.1016/j.optlastec.2024.112185","url":null,"abstract":"<div><div>Sapphire fiber Bragg gratings (SFBGs) are promising high-temperature sensors, which can be applied to measure temperature and strain in extreme environments. However, the multimode operation of SFBGs is susceptible to disturbance, leading to unreliable wavelength detection. Here, we propose by using added multimode fibers (AMMF) and tracing the longwave edge of reflection envelope to enhance the stability of wavelength detection for SFBG. The near-field profiles of transmission modes are investigated in sapphire fiber with different lengths of AMMF. It is found that the mode-field distribution of sapphire fiber can be improved by using AMMF with a length of 1000 m, which results in a reduction of relative standard deviation (RSD) from 57 % to 10 %. Then, the signal-to-noise ratio (SNR) in the reflection spectrum of SFBG is improved to 16 dB by polishing inclined end faces of sapphire fiber using the removal mechanism of hard-brittle materials. Furthermore, we detect the wavelengths of both the longwave edge and peak on the reflection envelope, which reveals lower fluctuations (i.e., SD = 0.02 nm) of the longwave edge, since lower-order modes are more stable during transmission. The effect of external disturbances (i.e., torsion and vibration) on demodulation of SFBG is also evaluated, with a maximum fluctuation of 0.06 nm (SD = 0.01 nm). A temperature experiment is carried out with the assembly and polynomial fitting curves with high fitness are obtained. Thus, our proposed methods enhance the reliability of wavelength detection in the reflection spectrum of SFBG, which is beneficial to improving the sensing performance of SFBG-based sensors.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"182 ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of different interlayer bonding modes on the microstructure and properties of laser cladded In625 不同层间结合模式对激光包覆 In625 的微观结构和性能的影响

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2024-11-26 DOI: 10.1016/j.optlastec.2024.112191

Yingying Zhang, Jiayu Sun, Zhengyu Sun, Yiqi Wang, Tianbiao Yu

{"title":"Effects of different interlayer bonding modes on the microstructure and properties of laser cladded In625","authors":"Yingying Zhang, Jiayu Sun, Zhengyu Sun, Yiqi Wang, Tianbiao Yu","doi":"10.1016/j.optlastec.2024.112191","DOIUrl":"10.1016/j.optlastec.2024.112191","url":null,"abstract":"<div><div>In this study, the effects of five different interlayer bonding modes on the microstructure, mechanical properties, friction, and wear resistance of In625 laser cladding were investigated. XRD, EDS, tensile, hardness, friction and wear tests were conducted. XRD analysis results have revealed that Nb<sub>6</sub>C<sub>5</sub> was detected in rectangular ring mode and the long, wide and rectangular ring overlay mode, indicating that the rectangular ring mode may promote the formation of secondary phase. EDS analysis has indicated a slightly higher Nb content in the rectangular ring mode, while the long and wide direction overlay mode exhibited a more uniform grain distribution and smaller grain size. Tensile tests revealed ductile fractures in the long direction, wide direction, the long and wide direction overlay modes, while the rectangle ring mode and the long, wide, and rectangular ring overlay modes showed brittle fractures. The long and wide direction overlay mode had the highest average elongation (35.46 %), and the long, wide, and rectangular ring overlay mode had the highest tensile strength (957.13 MPa). Hardness test results showed that the rectangle ring mode had the highest hardness (325.1 HV (0.2)). Friction and wear tests indicated that the long and wide direction overlay mode exhibited the smallest wear volume (0.08899 mm<sup>3</sup>) and the best overall friction performance. These findings indicate that the properties of the cladding layer can be effectively tailored by selecting appropriate interlayer bonding modes to match the specific material requirements in distinct application scenarios.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"182 ","pages":"Article 112191"},"PeriodicalIF":4.6,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sparse holographic tomography reconstruction method based on self-supervised neural network with learning to synthesize strategy 基于学习合成策略的自监督神经网络稀疏全息断层成像重建方法

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2024-11-26 DOI: 10.1016/j.optlastec.2024.112028

Yakun Liu, Wen Xiao, Feng Pan

{"title":"Sparse holographic tomography reconstruction method based on self-supervised neural network with learning to synthesize strategy","authors":"Yakun Liu, Wen Xiao, Feng Pan","doi":"10.1016/j.optlastec.2024.112028","DOIUrl":"10.1016/j.optlastec.2024.112028","url":null,"abstract":"<div><div>This research proposes a novel method for sparse digital holographic tomography reconstruction. Due to the limitations of numerical aperture and sampling time, the development of a high-precision sparse digital holographic tomography reconstruction techniques is necessitated. Our main innovation is the developing a composite coordinate-based implicit neural network with learning to synthesize strategy. It addresses the information limitations of limited angle by directly mapping the sample’s rotation angle and coordinates to the phase images, allowing for the prediction of phase images at unmeasured angles without requiring external training dataset. Furthermore, it avoids the issue of high-frequency suppression caused by the uneven distribution of frequency information in the images and the network’s characteristics using separately processing low-frequency and high-frequency information in different channels, resulting in higher fidelity of the predicted phase images and the tomographic results. We validated the effectiveness of the proposed method on four different fiber structures at various sampling intervals. This method provides a new perspective for tomographic reconstruction at sparse angles.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"182 ","pages":"Article 112028"},"PeriodicalIF":4.6,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation on the impact of thermal softening effect induced by nanosecond pulsed laser-assisted cutting on the deformation mechanism of SiCp/Al composites 纳秒脉冲激光辅助切割引起的热软化效应对 SiCp/Al 复合材料变形机制影响的研究

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2024-11-26 DOI: 10.1016/j.optlastec.2024.112166

Mingshuo Kang, Yan Gu, Jieqiong Lin, Tianyu Gao, Tuo Wang, Yunlong Luan, Jiaxin Zhao

{"title":"Investigation on the impact of thermal softening effect induced by nanosecond pulsed laser-assisted cutting on the deformation mechanism of SiCp/Al composites","authors":"Mingshuo Kang, Yan Gu, Jieqiong Lin, Tianyu Gao, Tuo Wang, Yunlong Luan, Jiaxin Zhao","doi":"10.1016/j.optlastec.2024.112166","DOIUrl":"10.1016/j.optlastec.2024.112166","url":null,"abstract":"<div><div>The machining of SiCp/Al composites containing high hardness SiC particles poses a significant challenge. The nanosecond pulsed laser-assisted cutting method has been selected to improve the machinability of SiCp/Al composites with a volume fraction of 45%. User-written subroutine is used to establish two dimensional and three dimensional cutting simulation models. The deformation mechanism of the Al matrix and SiC particles in SiCp/Al composites is investigated using cutting simulation, digital image correlation (DIC) experiments, and nanosecond pulsed laser-assisted cutting experiments. The effect of the various pulsed laser parameters on the surface quality of the workpiece is also investigated. The simulation and experimental results demonstrate that the damage of SiC particles and their arrangement hinder the plastic deformation of the Al matrix, and the nanosecond pulsed laser induces thermal softening effect and improve the plastic deformation of the Al matrix. Compared to the conventional cutting, the SiC particles exhibit a denser arrangement within the chip, and the plastic deformation of the Al matrix governs the chip deformation. The aim of this present study is to enhance the plastic deformation of the Al matrix, mitigate damage to SiC particles, improve the arrangement of SiC particles, and reduce the surface roughness of the workpiece in order to enhance the machinability of SiCp/Al composites.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"182 ","pages":"Article 112166"},"PeriodicalIF":4.6,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electro-optically addressable and rewritable transparent liquid crystal bistable waveguide display devices 电光寻址和可重写透明液晶双稳态波导显示装置

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2024-11-26 DOI: 10.1016/j.optlastec.2024.112165

Pravinraj Selvaraj , Yuan-Chang Tsai , Chun-Ting Wu, Chi-Tang Huang, Cheng-Kai Liu, Ko-Ting Cheng

{"title":"Electro-optically addressable and rewritable transparent liquid crystal bistable waveguide display devices","authors":"Pravinraj Selvaraj , Yuan-Chang Tsai , Chun-Ting Wu, Chi-Tang Huang, Cheng-Kai Liu, Ko-Ting Cheng","doi":"10.1016/j.optlastec.2024.112165","DOIUrl":"10.1016/j.optlastec.2024.112165","url":null,"abstract":"<div><div>Soft functional materials are in high demand to develop novel devices with excellent dynamic performances because they respond to specific stimuli with distinct functions. Here, we have examined sodium dodecyl sulfonate (SDS) ions doped into negative cholesteric liquid crystals (CLCs), employing an optically sensitive poly(N-vinyl carbazole) (PVK) film on ITO substrates for demonstrating a bistable light waveguide display device. The coated PVK film has the potential to block direct current (DC) electric fields and transform an insulator into a conductor when exposed to suitable ultraviolet (UV) stimuli, thus achieving pattern-addressing through the utilization of dynamic scattering of liquid crystals (LCs). Hence, the sample exhibits text pattern scattering and remains transparent under patterned UV stimuli. Initially, an external stimulus DC field was applied to the CLC cell to switch the planar textures in the region shining with UV light to focal conic textures that remain prolonged even after stimulus removal. Then,we examine the novel concept of a voltage-free “remote writing display”usingtransparentbistable waveguides displays by edge-lit white LED stimuli. Such advanced transparent displays offer robust stability, manufacturability, and cost-effectiveness for various applications in different environments and industries, such as automotive, e-paper, and augmented reality devices.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"182 ","pages":"Article 112165"},"PeriodicalIF":4.6,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simultaneous orthogonally polarized dual-wavelength actively Q-switched Ho:YLF laser at 2063 nm and 2065 nm 2063 纳米和 2065 纳米同时正交偏振双波长主动调 Q 开关 Ho:YLF 激光器

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2024-11-26 DOI: 10.1016/j.optlastec.2024.112210

Xiaofan Jing, Xinlu Zhang, Changchang Shen, Longyi Zhang, Jinjer Huang

引用次数: 0

Experiments and numerical simulations on fatigue properties of laser shock peening for FV520B steel FV520B 钢激光冲击强化疲劳特性的实验和数值模拟

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2024-11-26 DOI: 10.1016/j.optlastec.2024.112198

Dan Jin, Zhuang Liu, Zhuoqun Li, Chaoyue Guo, Mengying Sun

{"title":"Experiments and numerical simulations on fatigue properties of laser shock peening for FV520B steel","authors":"Dan Jin, Zhuang Liu, Zhuoqun Li, Chaoyue Guo, Mengying Sun","doi":"10.1016/j.optlastec.2024.112198","DOIUrl":"10.1016/j.optlastec.2024.112198","url":null,"abstract":"<div><div>Laser shock peening (LSP) experiments, low cycle fatigue experiments, microhardness and residual stress measurements, and scanning electron microscopy (SEM) analyses were conducted on FV520B steel cylindrical <u>specimen</u>s. Additionally, ABAQUS software was employed to predict fatigue life following the LSP process. The experimental results indicate that the surface compressive residual stresses induced by LSP inhibit both the initiation and propagation of fatigue cracks effectively, thereby prolonging the fatigue life of FV520B steel. The fatigue life of specimens at strain amplitudes of ± 0.5 %, ±0.6 %, ±0.7 %, and ± 1.0 % is improved by 132.2 %, 0.4 %, 18.0 %, and 88.8 %, respectively. A residual stress of −90 MPa is measured on the surface of the specimen and the surface hardness value increase by 48 % after LSP. The SEM results reveal that the characteristic of single crack sources for crack initiation is presented after LSP. The results of single point LSP simulation using ABAQUS demonstrate that the circumferential surface experiences a lower compressive residual stress of 30 MPa compared to a higher value of 45 MPa on the planar surface, this discrepancy arises due to rapidly decay associated with reduced rebound tensile strain on convex surfaces. A “multi-point continuous shock” simulation strategy was implemented for modeling LSP effects on the circumferential surface. The average compressive residual stress achieved was found to be 92 MPa, additionally, tensile residual stresses ranging from 8 MPa to 29 MPa were detected within secondary surfaces and inside the cylinder. Notably, discrepancies between simulated and experimental fatigue lives for LSP specimens across strain amplitudes of ± 0.5 %, ±0.6 %, ±0.7 %, and ± 1.0 % were minimal-ranging only between 10.4 % and 22.3 %.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"182 ","pages":"Article 112198"},"PeriodicalIF":4.6,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Full-duplex modulating retroreflector based UWOC system using MEMS grating modulator and SiPM 使用 MEMS 光栅调制器和 SiPM 的基于全双工调制反向反射器的 UWOC 系统

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2024-11-26 DOI: 10.1016/j.optlastec.2024.112163

Lihang Liu , Xinke Tang , Zhiyan Chen , Yibin Li , H.Y. Fu

{"title":"Full-duplex modulating retroreflector based UWOC system using MEMS grating modulator and SiPM","authors":"Lihang Liu , Xinke Tang , Zhiyan Chen , Yibin Li , H.Y. Fu","doi":"10.1016/j.optlastec.2024.112163","DOIUrl":"10.1016/j.optlastec.2024.112163","url":null,"abstract":"<div><div>In this paper, a single source full-duplex modulating retroreflector based underwater wireless optical communication (UWOC) system is proposed and experimentally demonstrated. A green laser is used and directly modulated for the downlink data transmission, and a reflective MEMS grating modulator is employed in the uplink to reflect and modulate the transmitting light. A large field-of-view (FOV) fisheye lens is mounted before the MEMS grating modulator to extend the field of view of the transceiver. The received signal in uplink, of which light beam travels through the underwater channel twice, is detected by a highly sensitive silicon photomultiplier (SiPM). The BER performance of the system is comprehensively investigated at different received optical powers and different incident angles. Experimental results show that the system can achieve 200-kbps uplink data rate and at 1.6-Gbps downlink data rate simultaneously at a wide field-of-view at 130°, offering a promising system design for practical applications such as data collection and controlling of small and lightweight underwater devices. To the best of our knowledge, it is the first time that Modulating retroreflector (MRR) based full-duplex UWOC system with only one light source has been experimentally demonstrated and studied. The achievable transmission distances of the proposed system at different water types are estimated, which are about 49 m and 15 m, in pure sea water and clear ocean water respectively.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"182 ","pages":"Article 112163"},"PeriodicalIF":4.6,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0