Nanoscale Plasmonic Printing

Ng, Soon Hock; Juodkazis, Saulius

doi:10.1007/978-3-031-14752-4_12

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…Such transient material state described by changing permittivity ε(t) is called Die-Met (from dielectric and metal-like plasma) [36]. It has strong absorption due to reduced n and increased κ due to electron generation and is also referred to as epsilon-near-zero (ENZ) state ε = (n − κ) 2 + i2nκ [37]. The ablation of thin films, which proceeds after the end of the laser pulse, follows an imprint of an fs-laser pulse intensity.…”

Section: Recovery Of Crystalline Smooth Surface On Ablated Sapphirementioning

confidence: 99%

Crystalline Flat Surface Recovered by High-Temperature Annealing after Laser Ablation

Smith

Tang

et al. 2023

Photonics

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Ultra-short laser pulses (1030 nm/230 fs) were used to laser ablate the surface of crystalline sapphire (Al2O3) at high intensity per pulse 20–200 TW/cm2/pulse. Laser-ablated patterns were annealed at a high temperature of 1500 °C. Surface reconstruction took place, removing the ablation debris field at the edges of ablated pits in oxygen flow (O2 flow). Partial reconstruction of ripples was also observed when multi-pulse ablated surfaces were annealed at high temperature in O2 flow. Back-side ablation of a 0.5-mm-thick Al2O3 produced high surface roughness ∼1μm which was reduced to ∼0.2μm by high-temperature annealing at 1500 °C for 2 h in O2. Improvement of surface quality was due to restructuring of the crystalline surface and sublimation, while the defined 3D shape of a micro-lens was not altered after HTA (no thermal morphing).

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Section: Recovery Of Crystalline Smooth Surface On Ablated Sapphirementioning

confidence: 99%

Crystalline Flat Surface Recovered by High-Temperature Annealing after Laser Ablation

Smith

Tang

et al. 2023

Photonics

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Fabrication of Glass‐Ceramic 3D Micro‐Optics by Combining Laser Lithography and Calcination

Balčas

Malinauskas

Farsari

et al. 2023

Adv Funct Materials

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This perspective is an overview of a recent direction in optical 3D printing, where polymerization of crosslinkable materials and nanomaterial fillers can be guided to the final structures and new composites via high temperature annealing (HTA). Defining 3D nano/micro‐structures by ultrafast laser direct writing and tailoring their precursor composition with subsequent tunability of the final properties during 750–1500 °C HTA step takes place at the large surface‐to‐volume ratio conditions favoring efficient pyrolysis and calcination, which are required for exchange of chemical materials/gases between glass/ceramic phase and surrounding. Previously, unexplored inorganic material formation conditions in terms of fast thermal quenching, composition mixing and surface tension guided formation can be harnessed by glass making for creation of new materials endowed with preferable technical properties. An immediate application perspective for a high durability, integrated, and active 3D micro‐optics is foreseen.

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Versatile femtosecond laser interference patterning applied to high-precision nanostructuring of silicon

Solana,

Chacon-Sanchez,

Garcia-Lechuga

et al. 2024

Optics & Laser Technology

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Nanoscale Plasmonic Printing

Cited by 3 publications

References 29 publications

Crystalline Flat Surface Recovered by High-Temperature Annealing after Laser Ablation

Crystalline Flat Surface Recovered by High-Temperature Annealing after Laser Ablation

Fabrication of Glass‐Ceramic 3D Micro‐Optics by Combining Laser Lithography and Calcination

Versatile femtosecond laser interference patterning applied to high-precision nanostructuring of silicon

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