37 Result(s)

Article

Surface nanostructuring of metals by laser irradiation: effects of pulse duration, wavelength and gas atmosphere

Surface modifications by nanostructuring present a new laser application for improvement of surface properties such as adhesion, mechanical characteristics or corrosion protection. In this study, we report the...

A. Pereira, A. Cros, P. Delaporte, S. Georgiou, A. Manousaki… in Applied Physics A (2004)

Article

Femtosecond laser ablation of cemented carbides: properties and tribological applications

Laser ablation with fs laser pulses was performed in air on cobalt cemented tungsten carbide by means of a Ti : sapphire laser (800 nm, 100 fs). Small and moderate fluences (2, 5, 10 J/cm²) and up to 5×10⁴ pulses...

G. Dumitru, V. Romano, H.P. Weber, Y. Gerbig, H. Haefke, S. Bruneau… in Applied Physics A (2004)

Article

Femtosecond ablation of ultrahard materials

Several ultrahard materials and coatings of definite interest for tribological applications were tested with respect to their response when irradiated with fs laser pulses. Results on cemented tungsten carbide...

G. Dumitru, V. Romano, H.P. Weber, M. Sentis, W. Marine in Applied Physics A (2002)

Article

Massive 5-oxoprolinuria with normal 5-oxoprolinase and glutathione synthetase activities

E. Riudor, J. A. Arranz, R. Alvarez, K. Carlsson… in Journal of Inherited Metabolic Disease (2001)

Article

Influence of dose and age on the response of the allopurinol test for ornithine carbamoyltransferase deficiency in control infants

Measurement of urinary orotidine and orotic acid after an oral allopurinol challenge is an important diagnostic test for ornithine carbamoyltransferase deficiency that is sometimes used in infants (<1 year of ...

E. Riudor, J. A. Arranz, M. Rodés, V. Rubio… in Journal of Inherited Metabolic Disease (2000)

Article

Synthesis and properties of Si and Ge nanoclusters produced by pulsed laser ablation

We show that conventional pulsed laser ablation (PLA) of Si and Ge targets in inert buffer gases is an efficient method of nanocluster synthesis. From a photoluminescence study of Si and Ge nanoclusters produ...

L. Patrone, D. Nelson, V.I. Safarov, S. Giorgio, M. Sentis, W. Marine in Applied Physics A (1999)

Article

Enhancement of intramammary lymph nodes with lymphoid hyperplasia: a potential pitfall in breast MRI

We present three cases of breast lesions labeled as probable intramammary lymph nodes that showed an increase in size on follow-up mammography. Contrast-enhanced MRI was performed and the three lesions showed...

X. Gallardo, M. Sentís, E. Castañer, X. Andreu, A. Darnell… in European Radiology (1998)

Article

The impact of stereotactic large-core needle biopsy in the treatment of patients with nonpalpable breast lesions: a study of diagnostic accuracy in 510 consecutive cases

The objective of this study was to assess the usefulness of stereotactic large-core needle biopsy (LCNB) in the management of nonpalpable breast lesions (NBL) and compare it with stereotactic fine-needle aspi...

F. J. Andreu, M. Sentís, E. Castañer, X. Gallardo, I. Jurado… in European Radiology (1998)

Article

Neonatal medium-chain acyl-CoA dehydrogenase deficiency presenting with very high creatine kinase levels

E. Riudor, J. A. Arranz, R. Anguera, S. Salcedo… in Journal of Inherited Metabolic Disease (1998)

Article

Influence of cathode roughness on discharge homogeneity of a high-pulse repetition frequency long-pulse XeCl laser

O. Uteza, P. Delaporte, B. Fontaine, B. Forestier, M. Sentis, I. Tassy in Applied Physics B (1998)

Article

Mild or absent clinical signs in twin sisters with short-chain acyl-CoA dehydrogenase deficiency

Two HLA-identical twin sisters are reported, of whom one has remained essentially asymptomatic, and an episode of hypotonia and decreased level of conciousness being the only relevant clinical finding in the oth...

A. Ribes, E. Riudor, B. Garavaglia, G. Martinez… in European Journal of Pediatrics (1998)

Article

Improvement of average laser power and beam divergence of a high pulse repetition frequency excimer laser

O. Uteza, P. Delaporte, B. Fontaine, B. Forestier, M. Sentis, I. Tassy… in Applied Physics B (1998)

Article

Acoustic wave origin in excimer lasers

O. Uteza, P. Delaporte, B. Fontaine, B. Forestier, M. Sentis, I. Tassy… in Applied Physics B (1997)

Article

High repetition rate spiker-sustainer XeCl laser

An X-ray preionized spiker-sustainer XeCl-excimer laser operating at high repetition frequency (1000 Hz) and 220 W of average laser power is demonstrated. The pulse energy and the pulse duration (160 ns) are v...

N. Bernard, Th. Hofmann, B. L. Fontaine, Ph. Delaporte, M. Sentis… in Applied Physics B (1996)

Article

Pulsed Laser Deposition of Si Nanocluster Films

Reactive laser ablation of Si targets by ArF* excimer laser (wavelength 193 nm, pulse width 15 ns (FWHM)) was performed in He, Ar or O₂ 0.05–1 Torr atmospheres and led to Si-SiO_x nanocluster thin film formation w...

W. Marine, I. Movtchan, A. Simakine, L. Patrone… in MRS Online Proceedings Library (1995)

Article

2D Modeling of Laser Induced Plasma Expansion

An axisymmetric two-dimensional modeling of plasma expansion in background gas is carried out to provide a better understanding of pulsed laser deposition (PLD) processes. This model takes into account the pla...

H. C. Le, D. Zeitoun, Y. Burtschell, W. Marine, M. Sentís… in MRS Online Proceedings Library (1995)

Chapter and Conference Paper

High-Pulse Repetition Rate Limitations in a High Average Power XeCl Laser

Potential applications of high average power ultraviolet lasers are numerous in fields as different as semiconductor processing, photochemistry, long-range communications, laser-matter interactions… These appl...

M. Sentis, B. Forestier, B. Fontaine, P. Issartier… in Gas Flow and Chemical Lasers (1987)