Jauregui, Rigoberto Portilla, Joaquin Reynoso-Hernández, J A Hirata-Flores, F I
Published in
Review of Scientific Instruments
This paper presents a simple and reliable measurement system for characterizing the amplitude to phase modulation (AM-PM) characteristics of high frequency amplifiers and nonlinear devices. The AM-PM measurement system is based on a null detector implemented with a double balanced mixer, and requires a voltmeter and a calibrated phase shifter. A 12...
Parmentier, François D. Mahé, Adrien Denis, Anne Jean-Marc Berroir Glattli, D. Christian Plaçais, Bernard Fève, Gwendal
Published in
Review of Scientific Instruments
We report on the realization of a high sensitivity RF noise measurement scheme to study small current fluctuations of mesoscopic systems at milliKelvin temperatures. The setup relies on the combination of an interferometric ampli- fication scheme and a quarter-wave impedance transformer, allowing the mea- surement of noise power spectral densities ...
Salazar, Agustín Fuente, Raquel Apiñaniz, Estibaliz Mendioroz, Arantza
Published in
Review of Scientific Instruments
The flash method is the standard technique to measure the thermal diffusivity of solid samples. It consists of heating the front surface of an opaque sample by a brief light pulse and detecting the temperature evolution at its rear surface. The thermal diffusivity is obtained by measuring the time corresponding to the half maximum of the temperatur...
Lemaire, R Maugendre, M Schuller, T Therssen, E Yon, J
Published in
Review of Scientific Instruments
It is of practical importance to lead laboratory-scale experiments allowing a better understanding of the impact of commercial fuels composition on the formation of combustion residues such as soot particles. To this end, a hybrid burner has been designed recently to burn high-speed sprays of small liquid fuel droplets. It consists of a Holthuis (p...
Mendioroz, Arantza Fuente-Dacal, Raquel Apiñaniz, Estibaliz Salazar, Agustín
Published in
Review of Scientific Instruments
Photothermal radiometry has been widely used to measure the thermal diffusivity of bulk materials. In the case of thin plates and filaments, a one-dimensional heat propagation model including heat losses has been developed, predicting that the thermal diffusivity can be obtained by recording both the surface temperature amplitude and phase profile ...
Fei, Y Y Landry, J P Sun, Y S Zhu, X D Luo, J T Wang, X B Lam, K S
Published in
The Review of scientific instruments
We describe a novel scanning optical microscope based on a polarization-modulated nulling ellipsometry. The new microscope employs a combination of scanning mirror and sample translation and thus enables high-throughput label-free detection of biomolecular microarrays with more than 10 000 protein or small-molecule targets. For illustration, we sho...
Porter, R Shan, F Ting Guo
Published in
Review of Scientific Instruments
Ting Guo Spielmann, C Walker, B C Barty, C P J
Published in
Review of Scientific Instruments