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Now showing items 401-410 of 2110
Sunspot group evolution and the global magnetic field of the Sun
(Trinity College (Dublin, Ireland). School of Physics, 2012)
Data-driven time propagation of quantum systems with neural networks
(2022)
We investigate the potential of supervised machine learning to propagate a quantum system in time. While Markovian dynamics can be learned easily, given a sufficient amount of data, non-Markovian systems are nontrivial and ...
Using Your Beam Efficiently: Reducing Electron Dose in the STEM via Flyback Compensation
(2022)
In the scanning transmission electron microscope, fast-scanning and frame-averaging are two widely used approaches for reducing electron-beam damage and increasing image signal noise ratio which require no additional ...
BCS-BEC crossover in a system of microcavity polaritons
(American Physical Society, 2005)
We investigate the thermodynamics and signatures of a polariton condensate over a range of densities, using
a model of microcavity polaritons with internal structure. We determine a phase diagram for this system
including ...
A Wind analysis of an evolved Giant. FUSE and HST/STIS observations of an eclipsing Symbiotic Binary
(European Space Agency, 2005)
A major outstanding problem in stellar astrophysics
lies in understanding the wind generation mechanism by
which evolved giants lose mass. Phase-resolved observations
of eclipsing symbiotic binary systems, containing ...
Nonlinear optical propagation in a tandem structure comprising nonlinear absorption and scattering materials
(2014)
Laser propagation in a tandem structure comprising carbon nanotubes and phthalocyanines is studied by Z-scan method. Due to the different mechanisms of the two materials, the laser beam can be attenuated with different ...
On the Road Again: Metal Foams Find Favor
(American Institute of Physics, 2002)
The three states of matter are well represented by earth, sea, and sky. God saw that it was good, and so did many generations of physics lecturers. But purity is obscurity, as Ogden Nash reminded us. The rich variety of ...
Directly accessing octave-spanning dissipative Kerr soliton frequency combs in an AlN microresonator
(2021)
Self-referenced dissipative Kerr solitons (DKSs) based on optical microresonators offer prominent characteristics allowing for various applications from precision measurement to astronomical spectrometer calibration. To ...
Amplified spontaneous emission and optical gain spectra from stilbenoid and phenylene vinylene derivative model compounds
(1999)
We report single-pass optical gain measurement in polystyrene!
waveguides doped with stilbenoid
and phenylene vinylene derivative model compounds under picosecond excitation. Using a
wavelength dependent model of amplified ...
A simulation study of the kinetics of passage of CO2 and N2 through the liquid/vapor interface of water
(1999)
The rate of passage of molecules of carbon dioxide and nitrogen through the vapor–liquid interface
of water at 300 K is studied by simulation. Previous work has established the form of the free energy
profile which has ...