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Optical measurement of membrane potential
1978Optical measurement of membrane potential is a new tool for physiologists and has already found many applications. However, the number of possible pitfalls is alarming, particularly in situations where comparison with electrode measurements is impossible.
L B, Cohen, B M, Salzberg
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Optical probes of membrane potential
The Journal of Membrane Biology, 1976There are two basically different mechanisms for the fluorescence and absorption changes of merocyanine, cyanine and oxonol dyes. The permeant dyes (cyanine and oxonol dyes, with delocalized charges) work by a potential-dependent accumulation mechanism. These dyes show large (up to 80%) fluorescence and absorption changes with suspensions of cells, and
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Optical MEMS potentials in optical storage
1998 IEEE/LEOS Summer Topical Meeting. Digest. Broadband Optical Networks and Technologies: An Emerging Reality. Optical MEMS. Smart Pixels. Organic Optics and Optoelectronics (Cat. No.98TH8369), 2002To compete with this steady increase in capacity and performance at relatively fixed cost, new approaches are being pursued to increase the capacity and performance of optical disk storage products. Micromachining technologies will play an important role in these new systems.
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On the imaginary optical potential
Nuclear Physics, 1959Abstract The imaginary part of the nuclear optical potential for nucleons is investigated in a semi-quantitative way. For simplicity, harmonic oscillator wave functions have been used to perform calculations for O16 and Ca40. Results indicate that surface absorption is quite important for incident energies up to about 60 MeV.
R.H. Lemmer, Th.A.J. Maris, Y.C. Tang
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Reports on Progress in Physics, 1984
The nucleon optical model is described, with particular reference to the analysis of neutron scattering and reaction cross sections. The central, spin-orbit and isospin terms in the potential are defined and the results of phenomenological determinations of their parameters reviewed.
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The nucleon optical model is described, with particular reference to the analysis of neutron scattering and reaction cross sections. The central, spin-orbit and isospin terms in the potential are defined and the results of phenomenological determinations of their parameters reviewed.
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Optical potential for deuteron
Nuclear Physics A, 1969Abstract An analytical expression for the deuteron optical potential is used to calculate the differential cross section for the elastic scattering of the deuteron from various targets. Comparison with experimental results indicates that a good fit to the experimental results cannot be obtained if the well-depth of the imaginary part of the nucleon ...
R.K. Satpathy +2 more
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Nuclear Physics A, 1974
Abstract We use the impulse approximation, the Tabakin internucleon potential and a Fermi gas model for the nucleus to calculate the low energy nucleon-nucleus optical potential. The real and imaginary parts are calculated simultaneously but it is found to be an extremely good approximation to calculate them separately as is usually done.
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Abstract We use the impulse approximation, the Tabakin internucleon potential and a Fermi gas model for the nucleus to calculate the low energy nucleon-nucleus optical potential. The real and imaginary parts are calculated simultaneously but it is found to be an extremely good approximation to calculate them separately as is usually done.
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Phenomenological optical potentials
The European Physical Journal Plus, 2018In this paper a “pedagogical” description of the scattering of two colliding nuclei is given. Some essential concepts are introduced, like the cross-section definition and the basic ingredients of scattering theory, which are preparatory for the discussion on the optical model. Phenomenological optical potentials are described, like the Woods-Saxon and
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The Potential Of Optical Lithography
SPIE Proceedings, 1985The limits of submicron patterning by optical lithography were estimated by computer simulation. As a result, the optimum numerical aperture, NA, which gives the highest resolution was determined. Assuming that the permitted defocus value is +1 pm, the lithographic resolution of about 0.7 pm was obtained with NA 0.5 and near-UV exposure.
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Il Nuovo Cimento A, 1984
Recent work on the optical model is illustrated and discussed, in view of the accurate phenomenological analyses of experimental data and of the fundamental analyses, based on the nucleon-nucleon interaction in nuclear matter, that have been carried out in the past years.
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Recent work on the optical model is illustrated and discussed, in view of the accurate phenomenological analyses of experimental data and of the fundamental analyses, based on the nucleon-nucleon interaction in nuclear matter, that have been carried out in the past years.
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