Results 21 to 30 of about 465,511 (293)

Toward little heat-affected area of fused silica materials using short pulse and high power CO2 laser

Results in Physics, 2019
As a rapid and efficient processing technology, CO2 laser processing has been applied to remove fused silica materials. However, thermal effect caused by CO2 laser would lead to thermal modification layer, thermal deformation and residual stress in ...
Linjie Zhao, Jian Cheng, Mingjun Chen, Xiaodong Yuan, Wei Liao, Haijun Wang, Qi Liu, Hao Yang   +7 more
doaj   +1 more source

Contrasting the beam interaction characteristics of selected lasers with a partially stabilised zirconia (PSZ) bio-ceramic [PDF]

, 2002
Differences in the beam interaction characteristics of a CO2 laser, a Nd:YAG laser, a high power diode laser (HPDL) and an excimer laser with a partially stabilised zirconia (PSZ) bio-ceramic have been studied.
Bradley L, Bäuerle D, Canning C, Chen X, Dausinger F, Guzzardella G A, J Lawrence, Lawrence J, Lawrence J, Lawrence J, Lawrence J, McMillan T A, Miki T, Ravaglioli A, Schomaker K T, Steg P G, Tassignon M J   +16 more
core   +1 more source

On the effects of using CO2 and F2 lasers to modify the wettability of a polymeric biomaterial. [PDF]

, 2010
Enhancement of the surface properties of a material by means of laser radiation has been amply demonstrated previously. In this work a comparative study for the surface modification of nylon 6,6 has been conducted in order to vary the wettability ...
Arefi-Khonsari, Ball, Benson, C.D. Walton, Chen, Cheng, D.G. Waugh, Hao, Harnett, J. Lawrence, Jung, Jung, Kietzig, Kim, Lawrence, Lawrence, Lee, Ma, Mirzadeh, Ouhlal, Pappas, Pfleging, R.B. Zakaria, Rance, Sarantopoulou, Skordoulis, Speranza, Tiaw, Waugh, Wu, Yoon, Yu, Zhao, Zorba   +33 more
core   +1 more source

Theoretical Study of comparative between the speed of penetration and cutting using a laser beam [PDF]

Engineering and Technology Journal, 2018
This research is devoted to study the effect of a laser beampower TEA-CO2 , Nd- YAG laser, and thermal properties of the materialswhen it is constant once and varying another once with the time on thepenetration and cutting speeds.
Ekhlas Mahmood
doaj   +1 more source

Pulse forming in an AM mode-locking hybrid TEA-CO2 laser [PDF]

, 1986
We performed an experimental study on the pulse forming mechanism in an AM mode-locked hybrid TEA-CO2 laser by means of “injection mode-locking”. The results show that bandwidth limited pulses will only be reached within a small - critical - range of ...
Bonnie, R.J.M., Goor, F.A. van
core   +4 more sources

Angiolytic laser stripping versus CO2 laser microflap excision for vocal fold leukoplakia: Long-term disease control and voice outcomes.

PLoS ONE, 2018
Background and purposeVocal fold leukoplakia, white plaque on the epithelium, has the potential for malignant transformation regardless of dysplasia grade. It is treated with different laser types (CO2 or angiolytic) and various techniques (vaporization,
Jae-Yol Lim, Young Min Park, Minsuk Kang, Seung Jin Lee, Kwangha Baek, Jina Na, Hong-Shik Choi   +6 more
doaj   +1 more source

Application of CO2 laser evaporation in locally advanced melanoma

Melanoma Management, 2019
Aim: This study aims to investigate the role of CO2 laser evaporation in the treatment of melanoma patients with satellite or in-transit metastases. Materials & methods: Patients who underwent CO2 laser evaporation were retrospectively included between ...
Otis M Vrielink, Schelto Kruijff, Barbara L van Leeuwen, Jan LN Roodenburg   +3 more
doaj   +1 more source

COMBINED EFFECT OF FRACTIONAL CO2 LASER AND TOPICAL APPLICATION OF GROWTH FACTOR COMPLEX SOLUTION ON OLD FACIAL ACNE SCAR

The Iraqi Journal of Medical Sciences, 2017
Background: Acne is one of the most common skin conditions. Acne scars are usually leading to disfigurement and psychosocial problem. Objective: To evaluate the efficacy and safety of carbon dioxide CO2 fractional laser and to evaluate the efficacy and
Fatima A.M. Ali, Ali S. Mahmood
doaj   +6 more sources

Analysis of the clinical efficacy and voice outcomes of CO2 laser resection versus laryngeal microsurgery for vocal cord polyps

Annals of Medicine, 2023
Objective To compare CO2 laser resection and laryngeal microsurgery for vocal cord polyps and provide evidence for the optimal surgical method.Methods This was a retrospective cohort study that included 74 patients with vocal cord polyps who underwent ...
Liansheng Zhang
doaj   +1 more source

Could the super-pulsed CO2 laser be used for oral excisional biopsies? [PDF]

, 2019
Background. The main purpose of a biopsy is microscopic examination and diagnosis. Keeping the margins of specimens safe and readable is always fundamental to detecting marginal infiltrations or malignant transformation.
Ambrogiano, Simone, Di Gioia, Cira Rosaria Tiziana, Dominiak, Marzena, Mohsen, Ahmed Amir Mohamed, Palaia, Gaspare, Romeo, Umberto, Tenore, Gianluca   +6 more
core   +1 more source