نتایج جستجو برای: angstrom model

تعداد نتایج: 2105464  

2009
Thomas Windbacher Viktor Sverdlov Siegfried Selberherr Clemens Heitzinger Norbert Mauser Christian Ringhofer

Biologically sensitive field-effect transistors (BioFETs) are a promising technology for detecting pathogens, antigen-antibody complexes, and tumor markers. A BioFET is studied for a biotin-streptavidin complex. Biotin-streptavidin is used in detection and purification of various biomolecules. The link between the Angstrom scale of the chemical reaction and the micrometer scale of the field eff...

2002
JAMES C. WYANT KATHERINE CREATH

This paper disctu;ses some advances in non-contact, interferometric optical profilers. Topics discussed include: (i) The advantages of using a white light source, rather than a laser source, (ii) The tradeoff between the use of Michelson, Mirau, and Linnik interferometers for different fields of view and different lateral resolutions, and.(iii) Techniques for removing errors in the reference su...

2008
Wenying Su Gregory L. Schuster Norman G. Loeb Raymond R. Rogers Richard A. Ferrare Chris A. Hostetler Johnathan W. Hair Michael D. Obland

[1] Recent studies utilizing satellite retrievals have shown a strong correlation between aerosol optical depth (AOD) and cloud cover. However, these retrievals from passive sensors are subject to many limitations, including cloud adjacency (or three-dimensional) effects, possible cloud contamination, uncertainty in the AOD retrieval. Some of these limitations do not exist in High Spectral Reso...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2005
Vladimir A Lobastov Ramesh Srinivasan Ahmed H Zewail

Electron microscopy is arguably the most powerful tool for spatial imaging of structures. As such, 2D and 3D microscopies provide static structures with subnanometer and increasingly with angstrom-scale spatial resolution. Here we report the development of 4D ultrafast electron microscopy, whose capability imparts another dimension to imaging in general and to dynamics in particular. We demonst...

Journal: :Physical review letters 2012
Y Huismans A Gijsbertsen A S Smolkowska J H Jungmann A Rouzée P S W M Logman F Lépine C Cauchy S Zamith T Marchenko J M Bakker G Berden B Redlich A F G van der Meer M Yu Ivanov T-M Yan D Bauer O Smirnova M J J Vrakking

Midinfrared strong-field laser ionization offers the promise of measuring holograms of atoms and molecules, which contain both spatial and temporal information of the ion and the photoelectron with subfemtosecond temporal and angstrom spatial resolution. We report on the scaling of photoelectron holographic interference patterns with the laser pulse duration, wavelength, and intensity. High-res...

Journal: :international journal of environmental research 2015
a. mavrakis l. salvati

greece has experienced particularly severe and frequent forest fires during summer 2007 together with exceptionally dry meteorological conditions culminated in distinct heat waves. the present study analyzes the time pattern of daily values of two fire risk indices (nesterov and angstrom) based on meteorological data made available for a number of gauging stations between 1 june and 31 august o...

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