27 research outputs found
Adiabatic description of nonspherical quantum dot models
Within the effective mass approximation an adiabatic description of
spheroidal and dumbbell quantum dot models in the regime of strong dimensional
quantization is presented using the expansion of the wave function in
appropriate sets of single-parameter basis functions. The comparison is given
and the peculiarities are considered for spectral and optical characteristics
of the models with axially symmetric confining potentials depending on their
geometric size making use of the total sets of exact and adiabatic quantum
numbers in appropriate analytic approximations
New Y-Function-Based Methodology for Accurate Extraction of Electrical Parameters on Nano-Scaled MOSFETs
International audienc
70 GHZ FMAX fully-depleted SOI MOSFET’S for low-power wireless applications
For the first time, excellent microwave performances including high frequency noise are ported for 0.25 micron gate channel length Fully Depleted (FD) Silicon-on-Insulator (SOI) MOSFET’s: a maximum extrapolated oscillation frequency (fmax) of 70 GHz and the state-of-the-art minimum noise figure (NFmin) of 0.8 dB with high available associated gain (Gass) of 13 dB at 6 GHz, at Vds = 0.75 V, Pdc < 3 mW, have been measured. We demonstrate that the kink related low frequency noise overshoot induced by the floating body effects disappears if the active silicon film thickness is thinned down to 30 nm. Ring oscillators measurements show also that SOI inverters are 30% faster than bulk ones. Finally, the operation at 1.8 V of a sigma delta modulator as well as of critical RF circuits (quadrature generator and mixers) for a zero IF 2 GHz GSM receiver has been demonstrated with this technology
New extraction method for gate bias dependent series resistance in nanometric double gate transistors.
International audienc
Experimental mobility study of DG-GAA MOSFETs down to 40nm gate length
International audienc
Magnetoresistance Mobility Meaurements in Gate-All-Around SON MOSFETs
International audienc
RETROSPECTIVE ANALYSIS OF LONG-TERM RESPONSE TO BEVACIZUMAB IN COMBINATION WITH IRINOTECAN FOR RECURRENT GLIOBLASTOMA: IDENTIFICATION OF PROGNOSTIC FACTORS
14th Meeting of the European-Association-of-Neuro-Oncology (EANO), Lyon, FRANCE, SEP 19-22, 2019International audienc
Toward in Silico Biomolecular Manipulation through Static Modes: Atomic Scale Characterization of HIV-1 Protease Flexibility
International audienceno abstrac
Hemispheric and large-scale surface air temperature variations: An extensive revision and an update to 2001
This study is an extensive revision of the Climatic Research Unit (CRU) land station temperature database that is used to produce a gridbox dataset of 5° latitude × 5° longitude temperature anomalies. The new database comprises 5159 station records, of which 4167 have enough data for the 1961-90 period to calculate or estimate the necessary averages. Apart from the increase in station numbers compared to the earlier study in 1994, many station records have had their data replaced by newly homogenized series that have been produced by several recent studies. New versions of all the gridded datasets currently available on the CRU Web site (http://www.cru.uea.ac.uk) have been developed. This includes combinations with marine (sea surface temperature anomalies) data over the oceans and versions with adjustment of the variance of individual gridbox series to remove the effects of changing station numbers through time. Hemispheric and global temperature averages for land areas developed with the new dataset differ slightly from those developed in 1994. Possible reasons for the differences between the new and the earlier analysis and those from the National Climatic Data Center and the Goddard Institute for Space Studies are discussed. Differences are greatest over the Southern Hemisphere and at the beginnings and ends of each time series and relate to gridbox sizes and data availability. The rate of annual warming for global land areas over the 1901-2000 period is estimated by least squares to be 0.07°C decade (significant at better than the 99.9% level). Warming is not continuous but occurs principally over two periods (about 1920-45 and since 1975). Annual temperature series for the seven continents and the Arctic all show significant warming over the twentieth century, with significant (95%) warming for 1920-44 for North America, the Arctic, Africa, and South America, and all continents except Australia and the Antarctic since 1977. Cooling is significant during the intervening period (1945-76) for North America, the Arctic, and Africa