Numerical Study on the Evolution Mechanism of the Crater under a Millisecond Laser

Zhu, Daoben; Zhang, Peiyun; Tian, Zhixiang; Cheng, Chen; Hua, Xijun; Xu, Shuping; Xie, Xu

doi:10.3390/app10249054

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…established a 2D numerical model to analyze the influence of laser processing parameters on a crater feature and a melted zone and verified it through experiments. [ 52 ] The results showed that laser peak power density and pulse duration greatly affected the depth and diameter of the crater. With increasing pulse duration after 1.5 ms, the height of the edge bulge decreased.…”

Section: Laser Micro/nanostructuring Strategiesmentioning

confidence: 99%

Laser Micro/Nano‐Structuring Pushes Forward Smart Sensing: Opportunities and Challenges

Zhang

Wang

Yan

et al. 2022

Adv Funct Materials

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Post‐pandemic era poses an imperative demand on progressive sensing devices whose performance largely relies on the morphologies and structures of sensing materials. Despite substantial efforts and advances that have been made in sensing materials with different micro/nanoscale dimensionalities, it is still challenging to couple micro/nano platforms with sensing materials together for the precise and scalable production of high‐performance sensors toward practical application scenarios. Owing to noncontact, precise, and high‐efficiency features, laser micro/nanofabrication offers a promising solution to achieve high‐quality micro/nano sensors with novel functionalities in a relatively short time. Herein, this review begins with a glance over the development of micro/nano‐structured sensors and briefly discusses the importance of laser micro/nanostructuring technology for micro/nano‐engineering of the sensors. Next, representative processing methods are elaborated in detail from a laser‐pulse‐type point of view, with potential applications toward chemical, physical, and biological targets based on different sensing mechanisms summarized. Finally, the perspectives on the opportunities and challenges of laser micro/nanostructuring strategies and materials for micro/nanosensors are presented.

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Section: Laser Micro/nanostructuring Strategiesmentioning

confidence: 99%

Laser Micro/Nano‐Structuring Pushes Forward Smart Sensing: Opportunities and Challenges

Zhang

Wang

Yan

et al. 2022

Adv Funct Materials

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“…The heat flux on metal surface mainly includes laser heat source, evaporation heat flux, boundary convection loss and so on [24,28]. The heat flux as the heat source needs to be added to the energy conservation equation.…”

Section: Boundary Conditionsmentioning

confidence: 99%

Research on the influence of laser molten pool flow and evaporation on the bump texture forming of aluminum plate surface

Yang¹,

Kuang²,

Ji³

et al. 2022

Surf. Topogr.: Metrol. Prop.

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At present, the research of laser texture mainly focuses on the machining quality and its properties, but the forming mechanism of laser bump texture surfaces is relatively less studied. In this paper, a long pulse laser ablation model was established based on the laser molten pool flow and evaporation phenomena by numerical simulation. And the evolution mechanism of bump texture morphology on metal surface during laser irradiation time was studied. The results show that the bump texture morphology shows edge protrusions and central depressions, and in the cooling stage, under the action of surface tension, the concave and convex height will show a rebound phenomenon. At the same time, the influence of laser parameters on the morphology of laser bump texture was studied by experiments. By comparing the numerical simulation with the experimental results, it can be found that when the laser irradiation time is equal to 0.5ms, the morphology obtained by numerical simulation is close to the experimental results. In addition, the differences of pressure field and velocity of vaporized metal gas at different time and under different laser power are compared. Finally, the plasma on the surface of aluminum during laser machining captured by a high-speed camera indirectly indicates that the evaporated metal gas ionizes and forms a stable plasma layer floating above the target material.

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Study on the Influence of Capillary Force and Thermal Capillary Force on Surface Bulge Morphology by Laser Micro-Melting

Yang

et al. 2022

Trans Indian Inst Met

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Numerical Study on the Evolution Mechanism of the Crater under a Millisecond Laser

Cited by 4 publications

References 19 publications

Laser Micro/Nano‐Structuring Pushes Forward Smart Sensing: Opportunities and Challenges

Laser Micro/Nano‐Structuring Pushes Forward Smart Sensing: Opportunities and Challenges

Research on the influence of laser molten pool flow and evaporation on the bump texture forming of aluminum plate surface

Study on the Influence of Capillary Force and Thermal Capillary Force on Surface Bulge Morphology by Laser Micro-Melting

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