From Filamentary Networks to Dense Cores in Molecular Clouds
... 2.1 Evidence of interstellar filaments prior to Herschel The presence of parsec-scale filamentary structures in nearby interstellar clouds and their potential importance for star formation have been pointed out by many authors for more than three decades. For example, Schneider and Elmegreen (1979) ...
... 2.1 Evidence of interstellar filaments prior to Herschel The presence of parsec-scale filamentary structures in nearby interstellar clouds and their potential importance for star formation have been pointed out by many authors for more than three decades. For example, Schneider and Elmegreen (1979) ...
Electronic Thesis
... It was not long, however, before Albert was sharing with me his passion for photonics and the rare-earth elements. Those discussions ultimately led to our first calculations of plasmons on planar interfaces - calculations that have laid the foundation for this thesis. Albert exhibits uncanny physica ...
... It was not long, however, before Albert was sharing with me his passion for photonics and the rare-earth elements. Those discussions ultimately led to our first calculations of plasmons on planar interfaces - calculations that have laid the foundation for this thesis. Albert exhibits uncanny physica ...
Fiber optic Fabry-Perot interferometer for
... Since the publication of the paper where the first fiber Fabry-Perot interferometer(FFPI) for sensing applications was demonstrated, more than thirty years ago, a number of configurations of this optical fiber interferometer have been proposed and used to detect physical, chemical and biological var ...
... Since the publication of the paper where the first fiber Fabry-Perot interferometer(FFPI) for sensing applications was demonstrated, more than thirty years ago, a number of configurations of this optical fiber interferometer have been proposed and used to detect physical, chemical and biological var ...
THEORETICAL DESCRIPTION OF ELECTRONIC EXCITATIONS IN
... design a compound capable to behave as a bistable system under normal conditions, through the aforementioned photoinduced magnetization or LIESST. That achievement is key for further technological developments based on such systems. Therefore, the understanding of the factors that determine their bi ...
... design a compound capable to behave as a bistable system under normal conditions, through the aforementioned photoinduced magnetization or LIESST. That achievement is key for further technological developments based on such systems. Therefore, the understanding of the factors that determine their bi ...
... wavelength of light it interacts slowly and omnidirectionally with radiation. For example, the typical timescale for an atomic electric dipole transition to emit a photon is on the order of nanoseconds, and the photon is emitted in an undirected dipolar angular pattern. This slow undirected interact ...
Optical Pumping
... OPTICAL PUMPING OF AN ATOM)C GROUND STATE polarization can be determined with great sensitivity by observing the intensity and polarization of the QuoresC. P. cent light. Unfortunately, very little work was devoted to the interrelationships between polarized atoms and resonance light in the two deca ...
... OPTICAL PUMPING OF AN ATOM)C GROUND STATE polarization can be determined with great sensitivity by observing the intensity and polarization of the QuoresC. P. cent light. Unfortunately, very little work was devoted to the interrelationships between polarized atoms and resonance light in the two deca ...
Zweijahresbericht 2000-2001
... The years 2000 and especially 2001 brought the Astrophysical Institute Potsdam (AIP) a series of important changes. Professor Günther Hasinger, Director of the AIP’s research Branch II “Extragalactic Astrophysics and Cosmology” since 1994, left the institute on 30.9.2001 and became a director of th ...
... The years 2000 and especially 2001 brought the Astrophysical Institute Potsdam (AIP) a series of important changes. Professor Günther Hasinger, Director of the AIP’s research Branch II “Extragalactic Astrophysics and Cosmology” since 1994, left the institute on 30.9.2001 and became a director of th ...
Raman spectroscopy of graphite - Institut für Festkörperphysik
... The D, D∗ and G∗ modes were known experimentally for three decades before their origin and their peculiar behaviour were explained theoretically (Thomsen & Reich 2000).† Let us briefly review the three key experiments that established the properties of the graphite Raman spectra. Tuinstra & Koenig (1 ...
... The D, D∗ and G∗ modes were known experimentally for three decades before their origin and their peculiar behaviour were explained theoretically (Thomsen & Reich 2000).† Let us briefly review the three key experiments that established the properties of the graphite Raman spectra. Tuinstra & Koenig (1 ...
Molecular clumps in the W51 giant molecular cloud
... pockets of higher integrated intensity visible throughout the entire length of the HVS at fairly regular intervals. Also visible are two notable breaks in the otherwise continuous structure of the HVS: one around RA 19:22:47, Dec. +14:12:47 and the other around RA 19:24:10, Dec. +14:36:10. From the ...
... pockets of higher integrated intensity visible throughout the entire length of the HVS at fairly regular intervals. Also visible are two notable breaks in the otherwise continuous structure of the HVS: one around RA 19:22:47, Dec. +14:12:47 and the other around RA 19:24:10, Dec. +14:36:10. From the ...
arXiv:astro-ph/0703091v1 5 Mar 2007
... The nature of rapid neutron-capture nucleosynthesis (the r-process) and its contributions to the abundances of post iron-peak elements (Z > 30) were first delineated in pioneering studies by Cameron (1957) and Burbidge et al. (1957). The details, however, still remain to be worked out (e.g., see Tru ...
... The nature of rapid neutron-capture nucleosynthesis (the r-process) and its contributions to the abundances of post iron-peak elements (Z > 30) were first delineated in pioneering studies by Cameron (1957) and Burbidge et al. (1957). The details, however, still remain to be worked out (e.g., see Tru ...
Accurate calculation of the local density of optical states in inverse
... light sources with a low quantum efficiency revealed evidence of inhibited radiative emission rates [19,20]. In time-resolved fluorescence experiments using emitters with high quantum efficiencies, both enhanced and inhibited fluorescence decay rates have been observed [21]. In parallel to these exp ...
... light sources with a low quantum efficiency revealed evidence of inhibited radiative emission rates [19,20]. In time-resolved fluorescence experiments using emitters with high quantum efficiencies, both enhanced and inhibited fluorescence decay rates have been observed [21]. In parallel to these exp ...
The influence of growth temperature on CVD grown graphene on SiC
... instance a wafer. Different methods can be used to disperse graphene in a non liquid-phase. By vacuum filtration or drop-casting where a drop of solution is deposed onto a substrate and graphene flakes remain when the solvent evaporates. But the easiest way is to prepare graphene directly onto the ...
... instance a wafer. Different methods can be used to disperse graphene in a non liquid-phase. By vacuum filtration or drop-casting where a drop of solution is deposed onto a substrate and graphene flakes remain when the solvent evaporates. But the easiest way is to prepare graphene directly onto the ...
Nanoreplicated positive and inverted submicrometer polymer
... The idea of making SERS substrates by plastic molding has been proposed for years and some efforts have been made on producing them.13–15 Actually besides SERS, the plasmonic and antireflective properties of the pyramids structure also have some potential in photovoltaic application.16,17 However, t ...
... The idea of making SERS substrates by plastic molding has been proposed for years and some efforts have been made on producing them.13–15 Actually besides SERS, the plasmonic and antireflective properties of the pyramids structure also have some potential in photovoltaic application.16,17 However, t ...
U P C NIVERSITAT
... marked contrast to the case of core-collapse supernovae, whose stellar progenitors are highly-luminous, massive stars. Observational evidence favors the double-degenerate channel, but significant discrepancies exist between observations and theory. There are approximately a few hundred million doubl ...
... marked contrast to the case of core-collapse supernovae, whose stellar progenitors are highly-luminous, massive stars. Observational evidence favors the double-degenerate channel, but significant discrepancies exist between observations and theory. There are approximately a few hundred million doubl ...
White dwarfs, black holes and neutron stars in close binaries
... the naked degenerate CO core simply cools and it remains observable as an ever fading object, called a white dwarf (e.g. S ALPETER 1971). It has a very high density: it has a size comparable to the size of the Earth but a mass similar to that of the Sun (see Fig. 1.1). For a short while the expelled ...
... the naked degenerate CO core simply cools and it remains observable as an ever fading object, called a white dwarf (e.g. S ALPETER 1971). It has a very high density: it has a size comparable to the size of the Earth but a mass similar to that of the Sun (see Fig. 1.1). For a short while the expelled ...
https://tel.archives-ouvertes.fr/file/index/docid/1058049/filename/HOU_XIAN_2013.pdf
... This is a milestone in my life, even though there is still definitely a long way to go in the ultimate pursuit of science. I owe my deep acknowledgements to all who have made me who I am today. First of all, I’m extremely grateful to David Smith, my thesis supervisor, for having accepted me to be a ...
... This is a milestone in my life, even though there is still definitely a long way to go in the ultimate pursuit of science. I owe my deep acknowledgements to all who have made me who I am today. First of all, I’m extremely grateful to David Smith, my thesis supervisor, for having accepted me to be a ...
Untitled
... are introduced. The fiber gyroscope sensor is based on the interference between two light beams propagated in opposite directions in a fiber loop. Since a large number of turns can be used, a very high sensitivity can be realized. Second, more practical issues related to fiber optic gyroscopes such as ...
... are introduced. The fiber gyroscope sensor is based on the interference between two light beams propagated in opposite directions in a fiber loop. Since a large number of turns can be used, a very high sensitivity can be realized. Second, more practical issues related to fiber optic gyroscopes such as ...
Untitled
... I give details of optical experiments only when they matter to the conceptual developments.2 In presenting mathematical developments, I use concise modern notation as long as this does not alter the structure of the historical actors’ arguments. By trimming the narrative in these ways, I aim to high ...
... I give details of optical experiments only when they matter to the conceptual developments.2 In presenting mathematical developments, I use concise modern notation as long as this does not alter the structure of the historical actors’ arguments. By trimming the narrative in these ways, I aim to high ...
Ans: Optical Fiber Communication System
... concerned with the design and application of optical fibers is known as fiber optics. Optical fibers are widely used in fiber-optic communications, where they permit transmission over longer distances and at higher bandwidths (data rates) than wire cables. Fibers are used instead of metal wires beca ...
... concerned with the design and application of optical fibers is known as fiber optics. Optical fibers are widely used in fiber-optic communications, where they permit transmission over longer distances and at higher bandwidths (data rates) than wire cables. Fibers are used instead of metal wires beca ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.