Pulsed laser-induced formation of silica nanogrids

Ihlemann, J.; Weichenhain-Schriever, R.

doi:10.1186/1556-276x-9-102

Cited by 6 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to achieve a smooth, uninterrupted and homogenous bulge along the channel, we implemented shape control through confinement. In our previous work [29], we have shown that the shaping of laser-induced structures is governed by the confinement layer. This involved applying a layer of polydimethylsiloxane (PDMS), which was affixed to the absorbent layer through slight mechanical pressure.…”

Section: Introductionmentioning

confidence: 96%

“…First, laser ablation takes place exclusively when the target substance can efficiently absorb laser radiation. However, in the case of fused silica (SiO 2 ), due to its transparent nature, the absorption of laser radiation is negligible [29]. To address this challenge, we employed a thin coating of silicon suboxide (SiO x , x ≈ 1), known for its strong absorption of UV laser light [30], on the fused silica substrate as the primary material.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fabrication of fluidic submicron-channels by pulsed laser-induced buckling of SiOx films on fused silica

Bakhtiari,

Ihlemann

2024

Discover Nano

Self Cite

View full text Add to dashboard Cite

Recently, considerable attention has been drawn to the field of micro/nanofluidic channels. However, current methods for fabricating micro/nanochannels are complex, costly, and time-intensive. In the present work, we successfully fabricated transparent submicron-channels on fused silica substrates (SiO2) using a straightforward laser process. To achieve this, a single-pulse excimer laser irradiation in a rear side configuration was employed to treat a thin film of UV-absorbing silicon suboxide (SiOx) through the transparent SiO2 substrate. A polydimethylsiloxane (PDMS) superstrate (coating layer) was applied over the SiOx film before laser exposure, serving as a confinement for controlled structure formation induced by the laser. Under optimal laser fluence, the thin SiOx film buckled, leading to the formation of channels with a width ranging from 10 to 20 µm and a height of 800 to 1200 nm, exhibiting a bell-like cross-sections following the so-called Euler buckling mode. Wider channels displayed morphologies resembling varicose or telephone cord modes. Subsequent high-temperature annealing led to the oxidation of SiOx, resulting transparent SiO2 channels on the fused silica substrate. The manufactured nanochannels exhibited promising potential for effectively transporting fluids of diverse viscosities. Various fluids were conveyed through these nanochannels via capillary action and in accordance with the Lucas-Washburn equation.

show abstract

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Fabrication of fluidic submicron-channels by pulsed laser-induced buckling of SiOx films on fused silica

Bakhtiari,

Ihlemann

2024

Discover Nano

Self Cite

View full text Add to dashboard Cite

show abstract

“…Since pulsed ultraviolet laser presents favorable characteristics such as short wavelength, high photon energy, thermal effects which differ from infrared laser, the research into interactions between pulsed ultraviolet laser and materials has aroused universal attentions in recent years [1][2][3][4][5][6][7][8][9][10][11] . High power ultraviolet lasers are expected to be widely applied in precision laser machining and military field.…”

Section: Introductionmentioning

confidence: 99%

Study on damage of K9 glass under 248nm ultraviolet pulsed laser irradiation

Wang

Fang

2015

SPIE Proceedings

View full text Add to dashboard Cite

The damage of K9 glass under 248nm ultraviolet pulsed laser irradiation was studied. The laser pulse energy was kept within the range of 60mJ to 160mJ, and the repetition rate was adjusted within the range of 1Hz to 40Hz. The damage morphologies of single-pulse and multi-pulse laser irradiation were characterized by optical microscope, and the damage mechanism was discussed. The experimental results indicated that the damage of K9 glass irradiated by 248nm ultraviolet laser mainly followed the thermal-mechanical coupling mechanism and the damage threshold of K9 glass was 2.8J/cm 2 . The intensity of damage area increased gradually with the increase of the laser pulse number. It was shown that accumulation effect of laser induced damage to K9 glass was obvious.ultraviolet pulsed laser, laser induced damage threshold, damage morphology, K9 glass

show abstract

“…The effect of spatial confinement on laser-induced structural and phase transformation in [215,216,218], laser-induced forward transfer [219][220][221], thin film patterning/scribing [222,223], and the generation of highquality surface structures [57,239].…”

Section: Discussionmentioning

confidence: 99%

Atomistic Simulation Study of Short Pulse Laser-Induced Generation of Crystal Defects in Metal Targets

Karim

View full text Add to dashboard Cite

AUTHORThe dissertation has been read and approved by the examining committee: Computational analysis reveals a strong correlation between the solidification front velocity and the concentration of vacancies, which in turn suggests that the vacancies are mainly generated at the rapidly advancing solidification front under conditions of strong undercooling below the melting temperature of the target material.The laser-induced generation of dislocations is also observed in the simulations of bcc Cr targets and is found to have a strong dependence on the crystallographic orientation of the target surface. For (001) Cr targets, a transient appearance of small loops of unstable partial dislocations outlining islands of stacking faults takes place at the initial stage of the relaxation of laser-induced stresses. For (110) and (111) Cr targets, the emission of a high density of perfect dislocations from the melting front is observed a few picoseconds after the laser pulse and is related to the high values of the resolved shear stress generated in many of the 48 slip systems of the bcc structure.The computational predictions from this study have implications for optimization of the experimental conditions in current and emerging applications based on short pulse laser-induced surface modification. VIII

show abstract

Pulsed laser-induced formation of silica nanogrids

Cited by 6 publications

References 13 publications

Fabrication of fluidic submicron-channels by pulsed laser-induced buckling of SiOx films on fused silica

Fabrication of fluidic submicron-channels by pulsed laser-induced buckling of SiOx films on fused silica

Study on damage of K9 glass under 248nm ultraviolet pulsed laser irradiation

Atomistic Simulation Study of Short Pulse Laser-Induced Generation of Crystal Defects in Metal Targets

Contact Info

Product

Resources

About