Laser-induced modification of glass–ceramics microstructure and applications

Veiko, Vadim P.; Kieu, Q. K.; Никоноров, Н. В.; Shur, V. Ya.; Luches, A.; Rho, Sipyo

doi:10.1016/j.apsusc.2005.03.090

Cited by 21 publications

(8 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…1 in which only the levels of interest in this study are sketched. 15,16 X-Ray Diffraction ͑XDR͒ measurement confirms the formation of SBN nanocrystals in the irradiated area. The transitions corresponding to this level are reported to understand the desvitrification process.…”

Section: Resultsmentioning

confidence: 99%

“…For this reason there is a big interest in fabricating high quality RE/alkali ion doped SBN crystalline films. [12][13][14][15] In this work, a local area of SBN glass doped with 5 mol % of Nd 3+ has been irradiated using a continuous argon laser multiline obtaining GC properties on the irradiated area. 10 In this way, glass ceramics ͑GCs͒ have turned into an emerging class of materials suitable for several photonics applications due to the improvements achieved in their transparencies, their easy and low cost fabrication, and the possibility to make the manipulation process in air atmosphere.…”

Section: Introductionmentioning

confidence: 88%

See 1 more Smart Citation

Laser irradiation in Nd3+ doped strontium barium niobate glass

Haro‐González

Martı́n

Arbelo-Jorge

et al. 2008

Journal of Applied Physics

View full text Add to dashboard Cite

Structural phase transitions of barium halide nanocrystals in fluorozirconate glasses studied by Raman spectroscopy J. Appl. Phys. 109, 083545 (2011); 10.1063/1.3580281Control of the local devitrification on oxyfluoride glass doped with Er 3 + ions under diode laser irradiation Study of microstructural behavior and nonadiabatic small polaron hopping conduction in BaTiO 3 doped leadvanadate glass and glass-ceramics dispersed with ferroelectric nanocrystals A local nanocrystalline formation in a neodymium doped strontium barium niobate ͑SBN͒ glass has been obtained under argon laser irradiation. The intense emission around 880 nm, originated from the 4 F 3/2 ͑ 4 F 5/2 ͒ thermalized level when the glass structure changes to a glass ceramic structure due to the irradiation of the laser beam, has been studied. The intensities and lifetimes change from this level inside and outside the irradiated area made by the laser excitation. They have been analyzed and demonstrated that the desvitrification process has been successfully achieved. These results confirm that nanocrystals of SBN have been created by the laser action confirming that the transition from glass to glass ceramic has been completed. These results are in agreement with the emission properties of nanocrystals of the bulk glass ceramic sample. The present study also suggests that the SBN nanocrystal has a potential application as temperature detector.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 88%

Laser irradiation in Nd3+ doped strontium barium niobate glass

Haro‐González

Martı́n

Arbelo-Jorge

et al. 2008

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…Laser-induced etching, an improved etching process, is very much needed in the fabrication of III-V integrated optic and microelectronic devices (Syvenkyy et al 2005;Veiko et al 2005;Yi and Parker 2006). Several studies of laser induced etching have shown the importance of its higher processing rate than the conventional etching techniques (Svorcik and Rtybka 1989;Cha et al 1997;Han et al 1998;Simkiene et al 2003).…”

Section: Introductionmentioning

confidence: 97%

Wavelength dependent laser-induced etching of Cr-O doped GaAs: Morphology studies by SEM and AFM

et al. 2009

View full text Add to dashboard Cite

The laser induced etching of semi-insulating GaAs 〈100〉 is carried out to create porous structure under super-and sub-bandgap photon illumination (hν). The etching mechanism is different for these separate illuminations where defect states play the key role in making distinction between these two processes. Separate models are proposed for both the cases to explain the etching efficiency. It is observed that under sub-bandgap photon illumination the etching process starts vigorously through the mediation of intermediate defect states. The defect states initiate the pits formation and subsequently pore propagation occurs due to asymmetric electric field in the pore. Formation of GaAs nanostructures is observed using scanning electron (SEM) and atomic force microscopy (AFM).

show abstract

“…Rapid quenching may produce a pit due to the volumetric contraction of the liquid, or it may result in a protrusion due to “freezing‐in” the constrained shape of the heated region or a combination of both depending on the thermal history and details of the liquid‐like and solid‐like thermal expansion coefficients. Even in the absence of high‐temperature ( T > 2000 K) capillarity, Marangoni stresses, or evaporation, laser‐induced morphology changes can still be dramatically changed due to stress and volume relaxation effects leading to several interesting micro‐ and nano‐patterning applications …”

Section: Introductionmentioning

confidence: 99%

Thermomechanical Modeling of Laser‐Induced Structural Relaxation and Deformation of Glass: Volume Changes in Fused Silica at High Temperatures

et al. 2012

View full text Add to dashboard Cite

A fully coupled thermomechanical model of the nanoscale deformation in amorphous SiO2 due to laser heating is presented. Direct measurement of the transient, nonuniform temperature profiles was used to first validate a nonlinear thermal transport model. Densification due to structural relaxation above the glass transition point was modeled using the Tool‐Narayanaswamy (TN) formulation for the evolution of structural relaxation times and fictive temperature. TN relaxation parameters were derived from spatially resolved confocal Raman scattering measurements of Si–O–Si stretching mode frequencies. Together, these thermal and microstructural data were used to simulate fictive temperatures which are shown to scale nearly linearly with density, consistent with previous measurements from Shelby et al. Volumetric relaxation coupled with thermal expansion occurring in the liquid‐like and solid‐like glassy states lead to residual stresses and permanent deformation which could be quantified. However, experimental surface deformation profiles between 1700 and 2000 K could only be reconciled with our simulation by assuming a roughly 2 × larger liquid thermal expansion for a‐SiO2 with a temperature of maximum density ~150 K higher than previously estimated by Bruckner et al. Calculated stress fields agreed well with recent laser‐induced critical fracture measurements, demonstrating accurate material response prediction under processing conditions of practical interest.

show abstract

Laser-induced modification of glass–ceramics microstructure and applications

Cited by 21 publications

References 4 publications

Laser irradiation in Nd3+ doped strontium barium niobate glass

Laser irradiation in Nd3+ doped strontium barium niobate glass

Wavelength dependent laser-induced etching of Cr-O doped GaAs: Morphology studies by SEM and AFM

Thermomechanical Modeling of Laser‐Induced Structural Relaxation and Deformation of Glass: Volume Changes in Fused Silica at High Temperatures

Contact Info

Product

Resources

About