Laser-Induced Hydrodynamics in Water and Biotissues Nearby Optical Fiber Tip

Yusupov, V. I.; Чудновский, В. М.; Баграташвили, В. Н.

doi:10.5772/28517

Cited by 3 publications

(1 citation statement)

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“…The strongly absorbing layer at the tip of the¯ber (according to the work of Amzayyb 11 the absorption of the layer can achieve 50%) results in heating of the silica core to temperatures higher than carbonization temperature and facilitates carbon formation during biotissue dissociation resulting from the joint action of radiation and the high temperatures near the heated silica¯ber. 12 At the same time, the carbon layer which forms is also a strong radiation absorber across a wide range of wavelengths and this results in an interesting unstable mode of laser cutting. Preliminary experiments to study this e®ect on ex-vivo samples have demonstrated that the absorbing layer permits an increase in the e®ective resection speed of the laser scalpel by 0.97 m. 13 However, no comparative study has yet been undertaken of the scar characteristics during tissue regeneration after conventional laser resection and after resection using the absorbing coating, so the mechanism of the e®ect is not clear at this stage.…”

Section: Introductionmentioning

confidence: 99%

The influence on biotissue laser resection of a strongly absorbing layer at the optical fiber tip

Kuznetsova

Elagin

Karabut

et al. 2016

J. Innov. Opt. Health Sci.

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In this paper, we consider a method of laser resection using the silica glass core from which the cladding layer has been removed as the cutting part of a laser scalpel. An absorbing layer coating the silica¯ber tip markedly alters its biotissue cutting characteristics. The results of histological studies of skin after exposure to a laser scalpel with and without a strongly absorbing coating (SAC) at a wavelength of 0.97 m show that resection using a coated scalpel is more sparing. When an uncoated scalpel was used, skin injury was more apparent in both its surface spread and the depth of structural damage, resulting in poorer tissue regeneration.

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Section: Introductionmentioning

confidence: 99%

The influence on biotissue laser resection of a strongly absorbing layer at the optical fiber tip

Kuznetsova

Elagin

Karabut

et al. 2016

J. Innov. Opt. Health Sci.

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Microbubbles with optical fiber tips chemically worn

Villegas-Sánchez¹,

Cerecedo-Núñez²,

García-Ramírez³

et al. 2020

J. Phys. D: Appl. Phys.

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This research shows an experimental study and analysis on microbubbles formation, through the use of chemically modified optical fiber tips. Microbubbles are formed in highly absorbent liquid using a continuous wave laser at 980 nm, with conventional powers. This report is considered, as the first study and dynamic analysis for microbubble formation in solution with these particular types of tips. Fiber tips are modified by the chemical wear method, using hydrofluoric acid, while, microbubbles are generated with the help of the deposition or adhesion of nanostructures on the modified tips. We have used carbon nanotubes dissolved in ethanol as nanostructures. We present an analysis of the results considering: the growth curves of the microbubbles, the largest radii, the lifetime and the growth rate. Finally, we discuss the important features of results, suggesting a possible way to control the size and number of microbubbles. Furthermore, the results of our research could be useful to improve the proposals of earlier applications or to propose new ones. The results shown can be useful for new applications or to improve proposals.

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