Breakdown Patterns in Branly's Coheror (1997)
Vandembroucq, D., Boccara, A., Roux, S.
We use thermal imaging of Joule heating to see for the first time electrical conducting paths created by the so-called Branly effect in a two-dimensional metallic granular medium (aluminium)....
Breakdown Patterns in Branly's Coheror (1997)
Vandembroucq, D., Boccara, A., Roux, S.
We use thermal imaging of Joule heating to see for the first time electrical conducting paths created by the so-called Branly effect in a two-dimensional metallic granular medium (aluminium)....
Breakdown Patterns in Branly's Coheror (1997)
Vandembroucq, D., Boccara, A., Roux, S.
We use thermal imaging of Joule heating to see for the first time electrical conducting paths created by the so-called Branly effect in a two-dimensional metallic granular medium (aluminium)....
Cariou, A., Himbert, D., Bernamer, H., Boccara, A., ...
Aims To determine the effect of sex on reperfusion therapy and early mortality after acute myocardial infarction. Mehtods We analysed the characteristics, the reperfusion interventions, and...
Boccara, A., Benamer, H., Aubry, P., Goy, P., Himbert, D., ...
Aims Prospectively to compare success rate and complications in percutaneous transluminal coronary angioplasty using two doses of heparin. Methods and results Four hundred patients undergoing...
Collinear mirage effect at a microscopic scale (1994)
This demonstration of mirage effect under a microscope provides a new possibility to measure the thermal diffusivity of a transparent sample as small as a few microns, with micronic spatial...
Heat flow measurement in thin films by time resolved ellipsometry (1994)
El Rhaleb, H., Roger, J., Stéhlé, J., Boccara, A.
Time resolved ellipsometry is applied to investigate heat diffusion processes occurring in polymer coated silicon under pulsed excitation. Experimental results, modelisation and analysis are...
We propose here to use a neural network as a help in the identification of individual components of a gaz mixture and in the evaluation of the concentration level of each component as they appear in...
Infrared differential imaging of vertical and slanted cracks : modelisations and experiments (1994)
Guitonny, J., Bozoki, Z., Mansanares, A., Le Liboux, M., Fournier, D., Boccara, A.
A differential stimulated I.R. detection scheme is presented in order to obtain a better contrast in crack detection on real samples whose surface exhibits topographical and optical irregularities. A...
Mansanares, A., Roger, J., Fournier, D., Boccara, A.
InGaAsP/InP buried heterostructure lasers were investigated using reflectance microscopy. Measurements were performed for both biased (current modulation) and non-biased (modulated pump beam) device....
Mansanares, A., Bozoki, Z., Velinov, T., Fournier, D., Boccara, A.
In this work a thick interface model is proposed in order to describe the photothermal signal perturbation introduced by grain interfaces. The validity of the model is discussed based upon...
Probing of low loss materials at 1.064 µm for interferometric gravitational waves detection (1994)
Loriette, V., Roger, J., Boccara, A., Gleyzes, Ph., Mackowski, J.
Within the framework of the Virgo project, characterisations of low-absorption high reflectivity multilayers coatings by collinear mirage effect at 1064µm are reported. All the tested samples have...
Surface roughness effect as a source of hyperdiffusion ? (1994)
Vandembroucq, D., Boccara, A., Fournier, D.
We have studied heat diffusion from rough surfaces in different materials exposed to a constant heating and we observed anomalously slow temperature rises over about 3 time decades which indicate a...
Pandey, G., Boué, C., Fournier, D., Boccara, A.
Colinear mirage detection was found to be simple and efficient to solve the problem of thermal diffusivity measurements in transparent polymer foils. Both reliable values have been obtained and...
Thermal diffusivity measurement by I.R. microscopy : application to opaque polymeric samples (1994)
Guitonny, J., Pandey, G., Boccara, A., Fournier, D.
In this paper, we have used an IR imaging system coupled with an IR detector to explore the periodically heated field in order to measure thermal diffusivity. Results on low diffusivity materials...
Collinear mirage effect at a microscopic scale (1994)
This demonstration of mirage effect under a microscope provides a new possibility to measure the thermal diffusivity of a transparent sample as small as a few microns, with micronic spatial...
Heat flow measurement in thin films by time resolved ellipsometry (1994)
El Rhaleb, H., Roger, J., Stéhlé, J., Boccara, A.
Time resolved ellipsometry is applied to investigate heat diffusion processes occurring in polymer coated silicon under pulsed excitation. Experimental results, modelisation and analysis are...
We propose here to use a neural network as a help in the identification of individual components of a gaz mixture and in the evaluation of the concentration level of each component as they appear in...
Infrared differential imaging of vertical and slanted cracks : modelisations and experiments (1994)
Guitonny, J., Bozoki, Z., Mansanares, A., Le Liboux, M., Fournier, D., Boccara, A.
A differential stimulated I.R. detection scheme is presented in order to obtain a better contrast in crack detection on real samples whose surface exhibits topographical and optical irregularities. A...
Mansanares, A., Roger, J., Fournier, D., Boccara, A.
InGaAsP/InP buried heterostructure lasers were investigated using reflectance microscopy. Measurements were performed for both biased (current modulation) and non-biased (modulated pump beam) device....
Mansanares, A., Bozoki, Z., Velinov, T., Fournier, D., Boccara, A.
In this work a thick interface model is proposed in order to describe the photothermal signal perturbation introduced by grain interfaces. The validity of the model is discussed based upon...
Probing of low loss materials at 1.064 µm for interferometric gravitational waves detection (1994)
Loriette, V., Roger, J., Boccara, A., Gleyzes, Ph., Mackowski, J.
Within the framework of the Virgo project, characterisations of low-absorption high reflectivity multilayers coatings by collinear mirage effect at 1064µm are reported. All the tested samples have...
Surface roughness effect as a source of hyperdiffusion ? (1994)
Vandembroucq, D., Boccara, A., Fournier, D.
We have studied heat diffusion from rough surfaces in different materials exposed to a constant heating and we observed anomalously slow temperature rises over about 3 time decades which indicate a...
Pandey, G., Boué, C., Fournier, D., Boccara, A.
Colinear mirage detection was found to be simple and efficient to solve the problem of thermal diffusivity measurements in transparent polymer foils. Both reliable values have been obtained and...
Thermal diffusivity measurement by I.R. microscopy : application to opaque polymeric samples (1994)
Guitonny, J., Pandey, G., Boccara, A., Fournier, D.
In this paper, we have used an IR imaging system coupled with an IR detector to explore the periodically heated field in order to measure thermal diffusivity. Results on low diffusivity materials...
Collinear mirage effect at a microscopic scale (1994)
This demonstration of mirage effect under a microscope provides a new possibility to measure the thermal diffusivity of a transparent sample as small as a few microns, with micronic spatial...
Heat flow measurement in thin films by time resolved ellipsometry (1994)
El Rhaleb, H., Roger, J., Stéhlé, J., Boccara, A.
Time resolved ellipsometry is applied to investigate heat diffusion processes occurring in polymer coated silicon under pulsed excitation. Experimental results, modelisation and analysis are...
We propose here to use a neural network as a help in the identification of individual components of a gaz mixture and in the evaluation of the concentration level of each component as they appear in...
Infrared differential imaging of vertical and slanted cracks : modelisations and experiments (1994)
Guitonny, J., Bozoki, Z., Mansanares, A., Le Liboux, M., Fournier, D., Boccara, A.
A differential stimulated I.R. detection scheme is presented in order to obtain a better contrast in crack detection on real samples whose surface exhibits topographical and optical irregularities. A...
Mansanares, A., Roger, J., Fournier, D., Boccara, A.
InGaAsP/InP buried heterostructure lasers were investigated using reflectance microscopy. Measurements were performed for both biased (current modulation) and non-biased (modulated pump beam) device....
Mansanares, A., Bozoki, Z., Velinov, T., Fournier, D., Boccara, A.
In this work a thick interface model is proposed in order to describe the photothermal signal perturbation introduced by grain interfaces. The validity of the model is discussed based upon...
Probing of low loss materials at 1.064 µm for interferometric gravitational waves detection (1994)
Loriette, V., Roger, J., Boccara, A., Gleyzes, Ph., Mackowski, J.
Within the framework of the Virgo project, characterisations of low-absorption high reflectivity multilayers coatings by collinear mirage effect at 1064µm are reported. All the tested samples have...
Surface roughness effect as a source of hyperdiffusion ? (1994)
Vandembroucq, D., Boccara, A., Fournier, D.
We have studied heat diffusion from rough surfaces in different materials exposed to a constant heating and we observed anomalously slow temperature rises over about 3 time decades which indicate a...
Pandey, G., Boué, C., Fournier, D., Boccara, A.
Colinear mirage detection was found to be simple and efficient to solve the problem of thermal diffusivity measurements in transparent polymer foils. Both reliable values have been obtained and...
Thermal diffusivity measurement by I.R. microscopy : application to opaque polymeric samples (1994)
Guitonny, J., Pandey, G., Boccara, A., Fournier, D.
In this paper, we have used an IR imaging system coupled with an IR detector to explore the periodically heated field in order to measure thermal diffusivity. Results on low diffusivity materials...
THERMAL BEHAVIOUR OF GRAIN BOUNDARIES IN ALUMINIUM NITRIDE CERAMICS (1990)
Sachet, J., Laval, J., Lepoutre, F., Boccara, A.
A photorefletance technique based on the detection of the variations of the optical reflection coefficient was developed. This technique pinpoints the influence of the intergranular phases on the...
THERMAL BEHAVIOUR OF GRAIN BOUNDARIES IN ALUMINIUM NITRIDE CERAMICS (1990)
Sachet, J., Laval, J., Lepoutre, F., Boccara, A.
A photorefletance technique based on the detection of the variations of the optical reflection coefficient was developed. This technique pinpoints the influence of the intergranular phases on the...
THERMAL BEHAVIOUR OF GRAIN BOUNDARIES IN ALUMINIUM NITRIDE CERAMICS (1990)
Sachet, J., Laval, J., Lepoutre, F., Boccara, A.
A photorefletance technique based on the detection of the variations of the optical reflection coefficient was developed. This technique pinpoints the influence of the intergranular phases on the...
COATINGS CHARACTERIZATIONS BY THE MIRAGE EFFECT AND THE PHOTOTHERMAL MICROSCOPE (1989)
Roger, J., Fournier, D., Boccara, A., Lepoutre, F.
The mirage effect and the photothermal microscope are totally optical methods able to measure without any contact optical and thermal properties of coatings. Very simple in their principle the...
COATINGS CHARACTERIZATIONS BY THE MIRAGE EFFECT AND THE PHOTOTHERMAL MICROSCOPE (1989)
Roger, J., Fournier, D., Boccara, A., Lepoutre, F.
The mirage effect and the photothermal microscope are totally optical methods able to measure without any contact optical and thermal properties of coatings. Very simple in their principle the...
COATINGS CHARACTERIZATIONS BY THE MIRAGE EFFECT AND THE PHOTOTHERMAL MICROSCOPE (1989)
Roger, J., Fournier, D., Boccara, A., Lepoutre, F.
The mirage effect and the photothermal microscope are totally optical methods able to measure without any contact optical and thermal properties of coatings. Very simple in their principle the...
CONTRAST IMPROVEMENT IN PHOTOACOUSTIC AND DIFFUSE LIGHT FOURIER TRANSFORM SPECTROSCOPY (1983)
Fournier, D., Boccara, A., Badoz, J.
A noticeable contrast improvement is obtained by filtering the interferogram in photoacoustic or diffuse transmittance spectroscopy. The sensitivity of both methods is also compared.
PHOTOTHERMAL DISPLACEMENT SPECTROSCOPY OF SURFACES AND THIN FILMS (1983)
Amer, N., Olmstead, M., Fournier, D., Boccara, A.
A new spectroscopic technique for probing the optical and thermal properties of solids and thin films is presented. Surface and bulk contributions can be readily differentiated, and a sensitivity of...
Roger, J., Fournier, D., Boccara, A.
By coupling Mirage detection and polarization modulation of the incident light, a sensitivity corresponding to one tenth of a monolayer of Cu on Pt has been achieved. Concentration gradient effects...
TOMOGRAPHIC APPROACH FOR PHOTOTHERMAL IMAGING USING THE MIRAGE EFFECT (1983)
Fournier, D., Lepoutre, F., Boccara, A.
A fast three dimensional photothermal method for probing subsurface defects using line by line scanning and back projection-like reconstruction is presented.
CONTRAST IMPROVEMENT IN PHOTOACOUSTIC AND DIFFUSE LIGHT FOURIER TRANSFORM SPECTROSCOPY (1983)
Fournier, D., Boccara, A., Badoz, J.
A noticeable contrast improvement is obtained by filtering the interferogram in photoacoustic or diffuse transmittance spectroscopy. The sensitivity of both methods is also compared.
PHOTOTHERMAL DISPLACEMENT SPECTROSCOPY OF SURFACES AND THIN FILMS (1983)
Amer, N., Olmstead, M., Fournier, D., Boccara, A.
A new spectroscopic technique for probing the optical and thermal properties of solids and thin films is presented. Surface and bulk contributions can be readily differentiated, and a sensitivity of...
Roger, J., Fournier, D., Boccara, A.
By coupling Mirage detection and polarization modulation of the incident light, a sensitivity corresponding to one tenth of a monolayer of Cu on Pt has been achieved. Concentration gradient effects...
TOMOGRAPHIC APPROACH FOR PHOTOTHERMAL IMAGING USING THE MIRAGE EFFECT (1983)
Fournier, D., Lepoutre, F., Boccara, A.
A fast three dimensional photothermal method for probing subsurface defects using line by line scanning and back projection-like reconstruction is presented.
CONTRAST IMPROVEMENT IN PHOTOACOUSTIC AND DIFFUSE LIGHT FOURIER TRANSFORM SPECTROSCOPY (1983)
Fournier, D., Boccara, A., Badoz, J.
A noticeable contrast improvement is obtained by filtering the interferogram in photoacoustic or diffuse transmittance spectroscopy. The sensitivity of both methods is also compared.
PHOTOTHERMAL DISPLACEMENT SPECTROSCOPY OF SURFACES AND THIN FILMS (1983)
Amer, N., Olmstead, M., Fournier, D., Boccara, A.
A new spectroscopic technique for probing the optical and thermal properties of solids and thin films is presented. Surface and bulk contributions can be readily differentiated, and a sensitivity of...
Roger, J., Fournier, D., Boccara, A.
By coupling Mirage detection and polarization modulation of the incident light, a sensitivity corresponding to one tenth of a monolayer of Cu on Pt has been achieved. Concentration gradient effects...
TOMOGRAPHIC APPROACH FOR PHOTOTHERMAL IMAGING USING THE MIRAGE EFFECT (1983)
Fournier, D., Lepoutre, F., Boccara, A.
A fast three dimensional photothermal method for probing subsurface defects using line by line scanning and back projection-like reconstruction is presented.