Publication
Monolithic InSb nanostructure photodetectors on Si using rapid melt growth
Publications associées (32)
Biological samples studied by optical nanospectroscopy
The different parts of the electromagnetic spectrum result in diverse effects upon interaction with matter: according to the wavelength, the radiation has energy appropriate for the excitation of a specific physical process. X-rays can be used as a tool to ...
EPFL2009Medium-range structure of vitreous SiO2 obtained through first-principles investigation of vibrational spectra
Alfredo Pasquarello, Luigi Giacomazzi
Using a density-functional framework, we investigate the vibrational spectra of vitreous SiO2 to determine to what extent these spectra provide information about the medium-range structure of the oxide network. We carry out a comparative study involving th ...
2009Ultra-sensitive vibrational spectroscopy of protein monolayers with plasmonic nanoantenna arrays
Hatice Altug, Shyamsunder Erramilli, Mi Kyung Hong
Infrared absorption spectroscopy enabling direct access to vibrational fingerprints of the molecular structure is a powerful method for functional studies of bio-molecules. Although the intrinsic absorption cross-sections of IR active modes of proteins are ...
2009Infrared Scanning Near-Field Optical Microscopy Below the Diffraction Limit
Infrared scanning near-field optical microscopy (IR-SNOM) is an extremely powerful analytical instrument since it combines IR spectroscopy's high chemical specificity with SNOM's high spatial resolution. In order to do this in the infrared, specialty chalc ...
2008Vertically moving micromirror for detectors in the mid infrared
This paper presents continuative results on the design, fabrication and measurements of a vertically moving, electrostatically actuated micromirror, first shown at the IEEE MEMS 2007 [N. Quack, I. Züst, S. Blunier, J. Dual, M. Arnold, F. Felder, M. Rahim, ...
2008Synthesis and characterizations of N,N-bis(diphenylphosphino)ethylaniline derivatives and X-ray crystal structure of palladium (II), platinum (II) complexes
Rosario Scopelliti, Zhaofu Fei, Wee Han Ang
N,N-Bis(diphenylphosphino)ethylaniline compounds, Ph2PN-C6H4-C2H5, with ethyl groups at the ortho- and para-positions have been synthesized. Oxidation of the aminophosphines with hydrogen peroxide, elemental sulfur and selenium gave the corresponding ...
2008First principles vibrational spectra of tetrahedrally-bonded glasses
Disordered oxides, such as vitreous silica (v-SiO2) and vitreous germania, (v-GeO2) and chalcogenide glasses, such as vitreous germanium diselenide (v-GeSe2) are currently key materials in many technological fields, ranging from Si-based microelectronic to ...
EPFL2007Efficient Stimulated Raman Pumping for Quantum-State Resolved Surface Reactivity Measurements
Thomas Rizzo, Rainer Beck, Plinio Maroni
We describe the use of stimulated Raman pumping in a molecular beam to perform quantum state resolved gas-surface reactivity measurements for molecules prepared in totally symmetric vibrational states. Vibrational states of homonuclear diatomics as well as ...
2006Soft and central mode behaviour in PbMg1/3Nb2/3O3 relaxor ferroelectric
The relaxor ferroelectric PbMg1/3Nb2/3O3 (PMN) is investigated by means of dielectric and Fourier transform far infrared transmission spectroscopy in ,the frequency range from 10 kHz to 15 THz at temperatures between 20 and 900 K using mostly thin films on ...
2005Far-infrared soft-mode behavior in PbSc1/2Ta1/2O3 thin films
Temperature dependences of the optic phonons in PbSc1/2Ta1/2O3 (PST) sol-gel films deposited on sapphire substrates were studied by means of Fourier transform far-infrared transmission spectroscopy in the temperature range of 20-900 K. Four films displayin ...
2005