Investigation on laser beam figuring of fused silica using microsecond pulsed CO2 laser radiation

Temmler, André; Weingarten, Christian; Schober, Benedikt; Uluz, Emrah

doi:10.1016/j.apsusc.2021.149609

Cited by 27 publications

(2 citation statements)

References 50 publications

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“…Применение лазерных технологий обработки силикатных материалов, основанных на резонансном поглощении излучения СО 2 -лазера, можно отнести к перспективному направлению создания МФ элементов. В ра-боте [6] было продемонстрировано и исследовано три основных режима воздействия СО 2 -лазерного излучения на матрицу SiО 2 -денсификация матрицы, абляция нанометровых слоев за импульс и линейная абляция слоев толщиной более 150 nm за импульс. Таким образом, с физической точки зрения нет преград для реализации МФ элементов с требуемой геометрией.…”

Section: Introductionunclassified

Лазерное Структурирование Кварцевых Стекол Для Создания Элементов Микрофлюидики

Бондаренко¹,

Заколдаев²,

Веласкес³

2022

Оптика И Спектроскопия

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The effect of the power and scanning speed of СО₂-laser radiation on the surface of fused silica for the manufacture of microchannels and microreservoirs for microfluidics tasks is investigated. The dependences of the size and roughness of microstructures on the parameters of laser radiation are established. The depth of microfluidic elements reaches 45 µm with a roughness of < 40 nm.The velocity of liquid propagation (up to 15mm/s) is estimated for the fabricated microchannels. The wettability of microreservoirs is estimated, where the wetting angle reaches 64 ± 7°. The fabricated elements have a high transmission (T≥ 0.8) in the visible spectral range.

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Section: Introductionunclassified

Лазерное Структурирование Кварцевых Стекол Для Создания Элементов Микрофлюидики

Бондаренко¹,

Заколдаев²,

Веласкес³

2022

Оптика И Спектроскопия

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“…The use of laser technologies for the processing of silicate materials, based on the resonant absorption of CO 2 laser radiation a promising direction in the development of MF elements. In the study [6], three main modes of the effect of CO 2 laser radiation on a SiO 2 matrixdensification matrices, ablation of nanometer layers per pulse and linear ablation of layers with a thickness of more than 150 nm per pulse. Thus, from a physical point of view, there are no obstacles to the implementation of MF elements with the required geometry.…”

Section: Introductionmentioning

confidence: 99%

Laser processing of fused silica for fabricating microfluidic elements

Bondarenko

Zakoldaev

Ramos-Velazque

2022

Optics and Spectroscopy

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The paper discusses the action of the power and the scanning speed of CO2-laser radiation on the surface of fused silica for the manufacture of microchannels and microreservoirs for microfluidics tasks is investigated. The dependences of the size and the roughness of microstructures on of laser radiation parameters is established. The depth of microfluidic elements reaches 45 μm with a roughness of < 40 nm. The velocity of liquid propagation (up to 15 mm/s) is estimated for the microchannels fabricated. The wettability of microreservoirs is evaluated, with the wetting angle reaching 64± 7o. The fabricated elements have a high transmission (T≥ 0.8) in the visible spectral range. Keywords: CO2-laser, microchannel fused silica, microfluidics.

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Laser‐Induced Preparation of Anderson‐Type Polyoxometalate‐Derived Sulfide/Oxide Electrocatalysts for Electrochemical Water Oxidation

Jin,

Zou,

Shi

et al. 2024

ChemSusChem

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Developing cost‐effective and high‐active electrocatalysts is vital to enhance the electrocatalytic performance for oxygen evolution reaction (OER). However, traditional pyrolysis methods require complicated procedures, exact temperatures, and long reaction times, leading to high costs and low yields of electrocatalysts in potential industrial applications. Herein, a rapid and economic laser‐induced preparation strategy is proposed to synthesize three bimetallic sulfide/oxide composites (MMoOS, M = Fe, Co, and Ni) on a nickel foam (NF) substrate. A focused CO2 laser with high energy is applied to decompose Anderson‐type polyoxometalate (POM)‐based precursors, enabling the creation of abundant heteropore and defective structures in the MMoOS composites that have multi‐components of MS/Mo4O11/MoS2. Remarkably, owing to the structural interactions between the active species, FeMoOS shows superior electrocatalytic performance for OER in an alkaline medium, exhibiting a low overpotential of 240 mV at 50 mA cm−2, a small Tafel slope of 79 mV dec−1, and good durability for 80 h. Physical characterizations after OER imply that partially dissolved Mo‐based species and new‐formed NiO/NiOOH can effectively uncover abundant active sites, fasten charge transfer, and modify defective structures. This work provides a rapid laser‐induced irradiation method for the synthesis of POM‐derived nanocomposites as promoted electrocatalysts.

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Investigation on laser beam figuring of fused silica using microsecond pulsed CO2 laser radiation

Cited by 27 publications

References 50 publications

Лазерное Структурирование Кварцевых Стекол Для Создания Элементов Микрофлюидики

Лазерное Структурирование Кварцевых Стекол Для Создания Элементов Микрофлюидики

Laser processing of fused silica for fabricating microfluidic elements

Laser‐Induced Preparation of Anderson‐Type Polyoxometalate‐Derived Sulfide/Oxide Electrocatalysts for Electrochemical Water Oxidation

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