Crystalline patterning in Sm-doped sodium borate glass by CW Nd:YAG laser irradiation

Lim, Yu-Sok; Lee, Myeongkyu

doi:10.1016/j.apsusc.2007.07.193

Cited by 5 publications

(1 citation statement)

References 10 publications

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“…Although this was measured for a solution having a beam path length of a few millimeters, the strong absorption observed in the visible and near-infrared ranges indicates that SWCNTs in the film state can also absorb the incident photon energy to a degree. In an earlier report [22], we have shown that crystalline patterns can be formed in Sm-doped sodium borate glass by scanning a Nd:YAG laser beam. The amorphous glass matrix is transparent but Sm 3+ ions have an absorption peak near 1064 nm.…”

Section: Resultsmentioning

confidence: 88%

Laser treatment of solution-deposited carbon nanotube thin films for improved conductivity and transparency

Joo

Lee²

2011

Nanotechnology

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Solution-deposited single-walled carbon nanotube (SWCNT) films contain a surfactant material and it should be removed by a post-deposition treatment to improve the conductivity. We here report that the sodium dodecyl sulfate (SDS) surfactant in SWCNT films can be completely removed by a pulsed Nd:YAG laser (wavelength = 1064 nm, pulse width = 99 ms). SWCNT films were spray-coated onto a glass substrate and were scanned by a laser beam of 2 mm size. In this process, individual nanotubes absorb the laser energy and generate heat to vaporize the surrounding surfactant. This mechanism was supported by the fact that the required pulse energy decreased as the SWCNT density increased. An encouraging feature is that unlike typical acid treatments, the laser treatment can improve not only the conductivity but also the transmittance. This might be associated with complete surfactant removal without leaving any particulate debris. For a film, the sheet resistance decreased from 1.07 kΩ/sq to 700 Ω/sq and its visible transmittance simultaneously increased by 4%.

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Section: Resultsmentioning

confidence: 88%

Laser treatment of solution-deposited carbon nanotube thin films for improved conductivity and transparency

Joo

Lee²

2011

Nanotechnology

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Laser Surface Patterning

Hocheng¹,

Tsai²,

Jadhav³

et al. 2014

Comprehensive Materials Processing

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Laser patterning and characterization of optical active crystals in glasses

Komatsu

Honma

2013

Journal of Asian Ceramic Societies

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This paper reports the recent progress in the laser patterning of optical active crystals such as BaAlBO 3 F 2 and ␤-BaB 2 O 4 in glasses. In the laser-induced crystallization using continuous-wave lasers such as Yb:YVO 4 fiber lasers (wavelength: 1080 nm), a steep temperature gradient is created in the laserirradiated region, and highly oriented crystal lines are patterned at the glass surface. The quality and orientation of crystals patterned are characterized from the azimuthal dependence of second harmonic intensities, polarized micro-Raman scattering spectra, and transmission electron microscope observations. Two-dimensional planar crystals with high orientations are patterned by applying laser irradiations with large overlapping. The patterning of crystals in the inside of glass fibers is also possible by moving gradually laser focal point from the surface into the inside. The progress in the crystal patterning with desired morphologies and high orientations provides a high potential for optical active device applications.

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Crystalline patterning in Sm-doped sodium borate glass by CW Nd:YAG laser irradiation

Cited by 5 publications

References 10 publications

Laser treatment of solution-deposited carbon nanotube thin films for improved conductivity and transparency

Laser treatment of solution-deposited carbon nanotube thin films for improved conductivity and transparency

Laser Surface Patterning

Laser patterning and characterization of optical active crystals in glasses

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