ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Junde Ji,Luchan Lin,Yifan Hu,Weiqing Wu,Xinde Zuo,Zhuguo Li
Laser sintering of metal nanoparticles (NPs) has been widely used in flexible microelectronic device fabrication, wherein the sintered layer thickness is a key factor affecting the mechanical stability and conductivity. In this work, ultrathin flexible electronic circuits on flexible substrates with robust bonds and excellent conductivity have been fabricated through ultrafast laser-induced thickness-limited sintering of the metal NP film. When the laser fluence is below the damage threshold of the metal NP film, sintered layer thickness can be controlled by the laser parameters. The maximum thickness of the dense sintered NP layer is limited to 355, 421, 491, 527, and 647 nm at laser pulse durations of 0.3, 5, 10, 15, and 20 ps, respectively. This thickness-limited sintered layer is mainly determined by the plasmonic photothermal absorption of metal NPs and heat transfer within the NP layer. Due to the nonthermal process under intense ultrafast laser irradiation, the metal–polymer interaction can be further enhanced with minimal damage on substrates. The resistivity of the as-received Ag NP film decreases to 6.32 μΩ·cm after laser sintering at a pulse duration of 20 ps. Meanwhile, the relative resistance of the NP film increases to 2.7, 1.7, and 1.03 after 105 bending cycles, 500 tape peeling cycles, and water flow impinging for 60 min, respectively. This thickness-controlled ultrathin Ag NP film fabricated by ultrafast laser sintering exhibits excellent mechanical robustness and electrical conductivity, which shows great promise in ultrathin flexible microelectronic devices.
研究领域:
材料科学
·
微电子学
·
光学工程
✓ 已验证
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 52
·2307368
·
IF 19
Qiang Yu,Jie Li,Jian Wu,Fangqi Liu,Yan Zhang,Haiqin Deng,Zixin Yang,Junrong Zhang,Cheng Chen,Long Fang,Sicong Zhu,Junyong Wang,Jinyong Leng,Zongfu Jiang,Kai Zhang,Pu Zhou
Saturable absorber is a key component in ultrafast pulsed laser systems, which are pivotal in ultrafast physics, high-speed communication, etc. 2D materials appear to be superior candidates as saturable absorbers for compact pulsed fiber lasers in recent years due to their wide band response and ease of integration. However, the integration of mode-locked devices inevitably involves contamination or polymer in the interface between the layered saturable absorber and the fiber, which contributes to a high start-up threshold for the ultrafast pulsed lasers. This study develops an on-fiber femtosecond laser with 2D narrow-gap semiconducting BiCuSeO as a saturable absorber by a fully dry integration process thanks to the controllable growth of freestanding quaternary BiCuSeO nanoflakes. The corresponding thermodynamic growth mechanism is systemically revealed by electron microscopy and bind-energy calculation. An electrostatic-force-assisted transfer method is developed to avoid damage or chemical contamination. The BiCuSeO-based femtosecond laser shows decent output performance (pulse width, signal-noise ratio and repetition rate are 395 fs, 61 dB, 17.1 MHz) with an ultra-low threshold of 30 mW. The strategy of controllable growth of free-standing 2D material facilitates a clean interface between the saturable absorber and fibers, which is favorable for high-performance ultrafast photonic devices.
研究领域:
光学
·
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2021
·Vol. 9
·期 19
·2100699
·
IF 9.926
Laiying Jing,Yiran Wang,Gang Lian,Baitao Zhang,Deliang Cui,Jingliang He,Qilong Wang,Ching-Ping Wong
2D van der Waals (VDWs) heterostructures have attracted much attention due to their exotic electronic and optical properties, which provide a new platform for material science and device fabrication. In this work, by coupling atomic interface engineering, an alternately intercalated superstructure of carbon and MoS 2 monolayers (m-C/MoS 2 ) is designed as a novel saturable absorber (SA) for mode-locked ultrafast laser generation. The novel intercalated structures exhibit excellent properties including wide bandgap, fast inter- and intra-band carrier relaxation time, and superior saturable absorption characteristic, etc. Consequently, a continuous wave mode-locked Yb:CALGO bulk laser with pulse width as short as 92 fs is achieved by using the prepared m-C/MoS 2 SA mirror, which is much shorter than those obtained with other reported 2D materials. This study provides a valuable strategy for the development of ultrashort pulse femtosecond lasers. The novel VDWs heterostructures also open new avenues toward advanced photonic devices.
研究领域:
材料科学
·
光学工程
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Manufacturing Processes
·
2025
·
IF 6.8
Xinfei Zhang,Panpan Lin,Ye Ding,Shuye Zhang,Rui Xu,Xin Sun,Fugang Lu,Peng He,Tiesong Lin
The high strength and efficient heat transfer of diamond/Cu cooling plate pose significant challenges for cutting-edge technologies, such as thermal management of electronics. In this paper, we reported a method to simultaneously enhance the mechanical properties and heat transfer performance of diamond/Cu joint by utilizing diamond interface micro-structures prepared by picosecond laser. The ablation behavior of picosecond laser on diamond surface and the effect of diamond graphitization on the properties of joints were analyzed. Meanwhile, by characterizing the shear strength and thermal diffusivity of diamond/Cu joints, the strengthening mechanism on the joint performance was explored. Compared to the flat interface in the original joint, laser-treated joints exhibited an increase in shear strength of up to 29 %, reaching 213 MPa, and an increase in thermal diffusivity of up to 11 %, reaching 212.1 mm 2 /s. These excellent properties were affiliated with designed interface micro-structure and distribution of interface layers. This study aims to provide novel insights into achieving efficient heat transfer and high strength at diamond/metal plates for heat management.
研究领域:
材料科学
·
热管理技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2018
·Vol. 6
·期 46
·12638-12642
·
IF 5.976
Yihuan Shi,Hui Long,Shunxiang Liu,Yuen Hong Tsang,Qiao Wen
Ultrasmall NbSe2 quantum dots (QDs) with an average diameter of 2.68 nm were successfully fabricated and investigated. By employing the NbSe2 quantum dots (QDs) as a saturable absorber, highly stable ultrafast laser pulse trains with a duration of 765 fs or 380 ps were successfully generated from mode-locking erbium or ytterbium-doped fiber laser systems by using the fabricated NbSe2 QDs. The obtained laser pump power threshold for the mode-locking operation of the Er-doped fiber laser was 15 mW, which is the lowest value recorded among 2D materials based saturable absorbers. Our results give a promising contribution to the research field by demonstrating the strong nonlinear optical properties of these novel ultrasmall NbSe2 QDs. It also opens up new opportunities for the use of these novel materials for nonlinear optics and ultrafast laser photonic technologies.
研究领域:
材料科学
·
光学工程
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Xiaofei Sun,Xiangguo Hou,Xuesong Mei,Yanbin Han,Bin Liu,Quansheng Li,Zikang Wang,Wei Tang,Yuping Wu,Wenjun Wang,Jianlei Cui
High-capacity rechargeable batteries are crucial for portable electronics, electric vehicles, and smart power grids. High-quality porous Al current collectors with well-designed hole size and hole density are expected to strengthen lithium transportation as well as to accommodate volume variations during fast charging and discharging. Ultrafast femtosecond laser drilling is exploited in this paper to fabricate 3D porous current collectors with precisely controlled hole size and porosity. With optimized laser processing parameters, a series of high-quality porous Al foils with different hole diameters and porosities are designed, simulated, and prepared to investigate their influence on the battery performance of the LiFePO4 electrode. The electrode using laser-drilled Al foil with a hole diameter of 60 μm and a porosity of 15% shows pretty high capacities at various charge/discharge rates. The performance improvement is ascribed to the large roughness and high surface area of the 3D Al foil, the strong connection between electrode materials and the porous current collector, the high loading density and efficient utilization of active materials, the good wettability and facile penetration of the electrolyte and, thus, the high Li+ diffusivity, and the buffering of volume/stress variation during charging/discharging in the 3D porous electrode.
研究领域:
材料科学
·
能源技术
·
电池工程
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Yuchen Zhu,Jian Xu,Haiyan Zhang,Aodong Zhang,Boxin Chen,Bin Zhao,Lei Li,Xuhong Qian,Ya Cheng,Fei Feng
A novel micro gas chromatography column (μGCC) with straight-sided elliptic microchannel cross sections was prepared by ultrafast laser-assisted chemical etching inside a glass substrate . The straight-sided elliptic cross sections resulted in a uniform distribution of the flow velocity field . This uniform distribution and the use of a microchannel with a consistent composition led to a uniform stationary phase coating. Upon the separation of a test mixture of C7–C11 alkanes, highly symmetrical chromatographic peaks were obtained. The tailing factors of the chromatographic peaks ranged from 0.95 to 1.05, which satisfies the relevant provisions of Pharmacopoeia of the People's Republic of China (ChP). The test results show that the improvement of the tailing factors is mainly due to the optimization of the cross-section structure rather than the optimization of the test conditions. Notably, due to the simple preparation processes and the low cost of the glass substrate, the total manufacturing cost of this novel μGCC is low.
研究领域:
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2025
·
IF 4.2
Feihong Yang,Weiwei Li,Peng Luo,Jing Cheng,Laiming Chen
Transparent Yb:CaF 2 ceramics have recently emerged as a promising ultra-fast laser medium with broad emission bandwidth, long lifetime and suitable thermal properties. However, Yb 3+ clustering in the CaF 2 host strongly influences the performance of these materials as solid-state laser gain media, and mitigating this clustering remains a challenge. Herein, we introduced Y 3+ and Gd 3+ buffer ions simultaneously for the first time to modulate the fluorescence properties of transparent Yb:CaF 2 ceramics and explore the effect of Y 3+ and Gd 3+ ions co-doping on the optical quality and microstructure of the ceramics. It was found that transmittance in the short wavelength was improved and fluorescence properties could be modulated to a larger extent compared to single buffer ion doping. This finding establishes the correlation between the double buffer ions doping and the fluorescence properties in transparent Yb:CaF 2 ceramics, and may lead to innovative techniques of transmitting enhancement, as well as its ultrafast laser applications.
研究领域:
材料科学
·
光学材料
·
固体激光器
·
陶瓷材料
·
光谱学
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2019
·
IF 2.687
Feng Zhang,Xiantao Jiang,Zhiliang He,Weiyuan Liang,Shixiang Xu,Han Zhang
Antimonene (Sb), a novel 2D crystalline, has recently received intense attention from optoelectronic communities, due to its enticing physical and chemical properties. Here we systematically investigate the broadband third-order nonlinear optical properties and carrier dynamics in antimonene. Efficient saturable absorption effect was observed at different wavelengths, indicating the use for broadband ultrafast laser generation. The nonlinear refractive indexes were characterized to be (2.55 ± 0.23) × 10 −14 cm 2 /W and (7.88 ± 0.37) × 10 −15 cm 2 /W at 800 nm and 1500 nm, respectively. Photoinduced carrier dynamics are investigated by a non-degenerate transient absorption spectrometer. Fast recovery processes were observed in antimonene and suggesting a high optical modulation speed to 500 GHz.
研究领域:
光学材料
·
凝聚态物理
·
纳米光子学
·
非线性光学
·
超快光谱学
✓ 已验证
DOI
高影响因子
Micromachines
·
2021
·Vol. 13
·期 1
·32
·
IF 2.891
Yufeng Tao,Chengchangfeng Lu,Chunsan Deng,Jing Long,Yunpeng Ren,Zijie Dai,Zhaopeng Tong,Xuejiao Wang,Shuai Meng,Wenguang Zhang,Yinuo Xu,Linlin Zhou
Rapid fabricating and harnessing stimuli-responsive behaviors of microscale bio-compatible hydrogels are of great interest to the emerging micro-mechanics, drug delivery, artificial scaffolds, nano-robotics, and lab chips. Herein, we demonstrate a novel femtosecond laser additive manufacturing process with smart materials for soft interactive hydrogel micro-machines. Bio-compatible hyaluronic acid methacryloyl was polymerized with hydrophilic diacrylate into an absorbent hydrogel matrix under a tight topological control through a 532 nm green femtosecond laser beam. The proposed hetero-scanning strategy modifies the hierarchical polymeric degrees inside the hydrogel matrix, leading to a controllable surface tension mismatch. Strikingly, these programmable stimuli-responsive matrices mechanized hydrogels into robotic applications at the micro/nanoscale (<300 × 300 × 100 μm3). Reverse high-freedom shape mutations of diversified microstructures were created from simple initial shapes and identified without evident fatigue. We further confirmed the biocompatibility, cell adhesion, and tunable mechanics of the as-prepared hydrogels. Benefiting from the high-efficiency two-photon polymerization (TPP), nanometer feature size (<200 nm), and flexible digitalized modeling technique, many more micro/nanoscale hydrogel robots or machines have become obtainable in respect of future interdisciplinary applications.Keywords:femtosecond laser;additive manufacturing;hyaluronic acid methacryloyl;polyethylene glycol diacrylate;stimuli-responsiveness
研究领域:
生物材料学
·
微纳米技术
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
OPTICS EXPRESS
·
2018
·Vol. 26
·期 6
·7155-7162
·
IF 3.356
Bang Liu,Lei Gao,Wei Wei Cheng,Xiao Sheng Tang,Chao Gao,Yu Long Cao,Yu Jia Li,Tao Zhu
We demonstrate a stable, picosecond fiber laser mode-locked by cesium lead halide perovskite quantum dots (CsPbBr3-QDs). The saturable absorber is produced by depositing the CsPbBr3-QDs nanocrystals onto the endface of a fiber ferrule through light pressure. A balanced two-detector measurement shows that it has a modulation depth of 2.5% and a saturation power of 17.29 MW/cm2. After incorporating the fabricated device into an Er3+-doped fiber ring cavity with a net normal dispersion of 0.238 ps2, we obtain stable dissipative soliton with a pulse duration of 14.4 ps and a center wavelength at 1600 nm together with an edge-to-dege bandwidth of 4.5 nm. The linear chirped phase can be compensated by 25 m single mode fiber, resulting into a compressed pulse duration of 1.046 ps. This experimental works proves that such CsPbBr3-QDs materials are effective choice for ultrafast laser operating with devious mode-locking states.
研究领域:
光学
·
材料科学
·
物理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Micromachines
·
2022
·Vol. 13
·期 4
·543
·
IF 3.523
Aodong Zhang,Jian Xu,Yucen Li,Ming Hu,Zijie Lin,Yunpeng Song,Jia Qi,Wei Chen,Zhaoxiang Liu,Ya Cheng
We demonstrate a hybrid laser microfabrication approach, which combines the technical merits of ultrafast laser-assisted chemical etching and carbon dioxide laser-induced in situ melting for centimeter-scale and bonding-free fabrication of 3D complex hollow microstructures in fused silica glass. With the developed approach, large-scale fused silica microfluidic chips with integrated 3D cascaded micromixing units can be reliably manufactured. High-performance on-chip mixing and continuous-flow photochemical synthesis under UV irradiation at ~280 nm were demonstrated using the manufactured chip, indicating a powerful capability for versatile fabrication of highly transparent all-glass microfluidic reactors for on-chip photochemical synthesis.Keywords:ultrafast laser direct writing;chemical etching;carbon dioxide laser processing;3D glass microfluidics;fused silica;continuous-flow photochemical synthesis
研究领域:
微纳米制造
·
光化学
·
微流控技术
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）