Results 201 to 210 of about 123,509 (254)

Influence of laser pulse shape on dry laser cleaning

Applied Surface Science, 2006
Abstract The influence of laser pulse shape and pulse duration on dry laser cleaning is investigated by means of combined experimental and theoretical approaches. Possibilities to enhance damage-free particle removal efficiency by adjusting the temporal parameters of laser irradiations are discussed.
Grojo, D., Boyomo-Onana, M., Cros, A., Delaporte, Ph.   +3 more
openaire   +3 more sources

Dry-etched wire distributed feedback laser

IEEE Photonics Technology Letters, 1995
We report on the realization and the properties of dry-etched wire and wire-DFB lasers and compare them with two-dimensional (2-D) reference lasers. The starting vertical structure, which was optimized for low threshold, consists of four GaInAs quantum wells embedded in a GaInAsP waveguide.
A. Griesinger, H. Schweizer, V. Harle, J. Hommel, F. Barth, B. Hohing, B. Klepser, F. Scholz   +7 more
openaire   +1 more source

Laser-Initiated Dry Etching of SiO2

Topical Meeting on Microphysics of Surfaces, Beams, and Adsorbates, 1985
In general photochemical (drying etching) process of thin films based on (UV) laser-initiated chemistry is difficult to investigate both mechanistically and kinetically. Some of the most important questions are concerned with the photo-formation of the reactive species and their (reactive) chemical interaction with the surface.
Jack O. Chu, George W. Flynn, Peter D. Brewer, Richard M. Osgood   +3 more
openaire   +1 more source

Dry‐etching‐assisted femtosecond laser machining

Laser & Photonics Reviews, 2017
AbstractFemtosecond laser machining has been widely used for fabricating arbitrary 2.5 dimensional (2.5D) structures. However, it suffers from the problems of low fabrication efficiency and high surface roughness when processing hard materials. To solve these problems, we propose a dry‐etching‐assisted femtosecond laser machining (DE‐FsLM) approach in ...
Xue‐Qing Liu, Qi‐Dai Chen, Kai‐Min Guan, Zhuo‐Chen Ma, Yan‐Hao Yu, Qian‐Kun Li, Zhen‐Nan Tian, Hong‐Bo Sun   +7 more
openaire   +1 more source

3D effects in dry laser cleaning

SPIE Proceedings, 2002
For 10 previous years dry laser cleaning has been analyzed in the frame of 1D model with homogeneous surface heating. This model gave qualitative description of the process and was sufficient for initial studies. Nevertheless further examinations show that 1D model is in one-two order magnitudes discrepancy with experiment.
Boris S. Luk'yanchuk, Sumei Huang, Ming Hui Hong   +2 more
openaire   +1 more source

Dry needling, acupuncture and laser

2009
No abstract available.
Selvaratnam, P, Gabel, C P
openaire   +2 more sources

Dry laser cleaning of anodized aluminium

Applied Physics A: Materials Science & Processing, 1999
Standard anodized aluminium samples with about a 20-μm-thick oxide layer were investigated for cleaning study by means of laser pulses. The removal caused by overheated melting and mechanical stress was studied at wavelengths of 1064 nm and 532 nm. The samples were examined with scanning electron and optical microscopy.
Meja, P., Autric, M., Delaporte, P., Alloncle, P.   +3 more
openaire   +2 more sources

Laser-Induced Dry Lift-off Process

Japanese Journal of Applied Physics, 1995
A dry lift-off process has been achieved using pulsed KrF excimer laser irradiation in air to remove AZ resist and to form SiO2 patterns on GaAs substrate. SiO2 patterns with a resolution of quarter-micron order can be obtained by this process. The process is attributed to the laser photodecomposition of the resist material.
Lu, Yong-Feng, Aoyagi, Yoshinobu
openaire   +1 more source

Wet versus dry enamel ablation by Er:YAG laser

The Journal of Prosthetic Dentistry, 1992
The purpose of this study was to observe tooth structure and pulpal temperature changes in extracted human teeth subjected to a pulsed Er:YAG (2.94 microns) laser. Two teeth were irradiated while dry and three teeth while moistened by a fine water mist. When the dry teeth were irradiated, there was minimal enamel ablation.
E J, Burkes, J, Hoke, E, Gomes, M, Wolbarsht   +3 more
openaire   +2 more sources

Laser etching and dry processing

Bulletin of Materials Science, 1988
Controlled, anisotropic etching of different materials commonly used in microelectronics is an important processing step in microfabrications. During recent years it has been demonstrated that lasers can be used for initiating and enhancing the etching process in many gas-solid (dry processing) and liquid-solid (wet processing) systems.
openaire   +1 more source