Rapid microfabrication of transparent materials using filamented femtosecond laser pulses

Butkus, Simas; Gaižauskas, E.; Paipulas, Domas; Viburys, Ž.; Kaškelyė, D.; Barkauskas, Martynas; Alesenkov, Aleksandr; Sirutkaitis, Valdas

doi:10.1007/s00339-013-8108-2

Cited by 40 publications

(14 citation statements)

References 16 publications

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“…In the studied case, for the femtosecond pulse-generated light filament formation and its efficient application for rapid fabrication at employed irradiation conditions, a 10-fold higher average power was used as compared to the sharp focusing case. Structuring efficiency in terms of area (volume) per time scaled with laser power almost linearly within the examined range, as the beam's peak power was exceeding the threshold of modification several times [47]). Hence, a higher power fs laser can be implemented to further increase the fabrication throughput.…”

Section: Characteristics Of Light Filament-assisted Vs Sharp Beam Fomentioning

confidence: 83%

“…For the FPF, the processable sample was immersed in water, and the immersion depth was chosen to be approximately 0.5 mm. Typical writing parameters for FPF were: focal spot diameter equal to 55 µm and average laser power set to 5 W. One can find more detailed information regarding light filament formation in liquids and its assisted rapid fabrication elsewhere [47,51]. In the case of focused beam fabrication, the sample was raster scanned in the X-Y plane followed by change in Z direction.…”

Section: Direct Laser Writing By Ablationmentioning

confidence: 99%

“…For FPF fabrication, the focusing conditions were different; an f-theta lens was used and the average laser power increased to 5 W. This corresponded to a dramatic increase of E p = 200 µJ, yet a comparative I = 75 TW/cm 2 at a 55-µm diameter of the focused beam spot (described in detail in [47]). …”

Section: Direct Laser Writing By Ablationmentioning

confidence: 99%

“…Further, DLW by ablation is used for the modification of surfaces, hole drilling, as well as outer geometry shaping of the whole objects and deliver surface textures on micro-and even down to the nano-scale. The photons were directed either by focusing the beam or by creating a femtosecond pulse generated filament [47], which was employed for DLW-SM processing. The proposed combination of FFF with DLW offers successful fabrication of 3D microporous structures with controlled pore sizes in approximately a 100-400 µm range.…”

Section: Introductionmentioning

confidence: 99%

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3D Microporous Scaffolds Manufactured via Combination of Fused Filament Fabrication and Direct Laser Writing Ablation

et al. 2014

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A 3D printing fused filament fabrication (FFF) approach has been implemented for the creation of microstructures having an internal 3D microstructure geometry. These objects were produced without any sacrificial structures or additional support materials, just by precisely tuning the nozzle heating, fan cooling and translation velocity parameters. The manufactured microporous structures out of polylactic acid (PLA) had fully controllable Micromachines 2014, 5 840 porosity (20%-60%) and consisted of desired volume pores (∼0.056 µm 3 ). The prepared scaffolds showed biocompatibility and were suitable for the primary stem cell growth. In addition, direct laser writing (DLW) ablation was employed to modify the surfaces of the PLA structures, drill holes, as well as shape the outer geometries of the created objects. The proposed combination of FFF printing with DLW offers successful fabrication of 3D microporous structures with functionalization capabilities, such as the modification of surfaces, the generation of grooves and microholes and cutting out precisely shaped structures (micro-arrows, micro-gears). The produced structures could serve as biomedical templates for cell culturing, as well as biodegradable implants for tissue engineering. The additional micro-architecture is important in connection with the cell types used for the intention of cell growing. Moreover, we show that surface roughness can be modified at the nanoscale by immersion into an acetone bath, thus increasing the hydrophilicity. The approach is not limited to biomedical applications, it could be employed for the manufacturing of bioresorbable 3D microfluidic and micromechanic structures.

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Section: Characteristics Of Light Filament-assisted Vs Sharp Beam Fomentioning

confidence: 83%

Section: Direct Laser Writing By Ablationmentioning

confidence: 99%

Section: Direct Laser Writing By Ablationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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3D Microporous Scaffolds Manufactured via Combination of Fused Filament Fabrication and Direct Laser Writing Ablation

et al. 2014

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“…In this paper, we present cutting and drilling results for metallic and dielectric material fabrication by employing a novel micromachining approach [32,33]. We demonstrate that the addition of a thin water layer on top of the samples results in superior micromachining quality and throughput due to additional spatial shaping of ultrashort pulses, cooling and the cleaning properties of the covering fluid.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Micromachining Process of Dielectric and Metallic Substrates Immersed in Water with Femtosecond Pulses

et al. 2015

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Abstract:Micromachining of 1 mm thick dielectric and metallic substrates was conducted using femtosecond pulse generated filaments in water. Several hundred microjoule energy pulses were focused within a water layer covering the samples. Within this water layer, non-linear self-action mechanisms transform the beam, which enables higher quality and throughput micromachining results compared to focusing in air. Evidence of beam transformation into multiple light filaments is presented along with theoretical modeling results. In addition, multiparametric optimization of the fabrication process was performed using statistical methods and certain acquired dependencies are further explained and tested using laser shadowgraphy. We demonstrate that this micromachining process exhibits complicated dynamics within the water layer, which are influenced by the chosen parameters.

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High-precision micro-through-hole array in quartz glass machined by infrared picosecond laser

et al. 2015

Appl. Phys. A

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Rapid microfabrication of transparent materials using filamented femtosecond laser pulses

Cited by 40 publications

References 16 publications

3D Microporous Scaffolds Manufactured via Combination of Fused Filament Fabrication and Direct Laser Writing Ablation

3D Microporous Scaffolds Manufactured via Combination of Fused Filament Fabrication and Direct Laser Writing Ablation

Analysis of the Micromachining Process of Dielectric and Metallic Substrates Immersed in Water with Femtosecond Pulses

High-precision micro-through-hole array in quartz glass machined by infrared picosecond laser

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