Element-specific momentum distributions of positron and positronium annihilation in polymers

2007 ◽  
Vol 76 (2) ◽  
pp. 112-117 ◽  
Author(s):  
K. Sato ◽  
K. Ito ◽  
K. Hirata ◽  
R.S. Yu ◽  
Y. Kobayashi
2005 ◽  
Vol 71 (1) ◽  
Author(s):  
K. Sato ◽  
K. Ito ◽  
K. Hirata ◽  
R. S. Yu ◽  
Y. Kobayashi

ACS Nano ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 1566-1578
Author(s):  
Jacob Pettine ◽  
Sean M. Meyer ◽  
Fabio Medeghini ◽  
Catherine J. Murphy ◽  
David J. Nesbitt

Author(s):  
Qaynar Jandaolet ◽  
Alim Ablat ◽  
Pazilet Obul ◽  
Reyima Rashidin ◽  
Ibrahim Sitiwaldi

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1333
Author(s):  
Leeju Singh ◽  
Nicolò Maccaferri ◽  
Denis Garoli ◽  
Yuri Gorodetski

The phenomenon of coupling between light and surface plasmon polaritons requires specific momentum matching conditions. In the case of a single scattering object on a metallic surface, such as a nanoparticle or a nanohole, the coupling between a broadband effect, i.e., scattering, and a discrete one, such as surface plasmon excitation, leads to Fano-like resonance lineshapes. The necessary phase matching requirements can be used to engineer the light–plasmon coupling and to achieve a directional plasmonic excitation. Here, we investigate this effect by using a chiral nanotip to excite surface plasmons with a strong spin-dependent azimuthal variation. This effect can be described by a Fano-like interference with a complex coupling factor that can be modified thanks to a symmetry breaking of the nanostructure.


Entropy ◽  
2021 ◽  
Vol 23 (4) ◽  
pp. 444
Author(s):  
Nicolae Dan Tesloianu ◽  
Lucian Dobreci ◽  
Vlad Ghizdovat ◽  
Andrei Zala ◽  
Adrian Valentin Cotirlet ◽  
...  

By assimilating biological systems, both structural and functional, into multifractal objects, their behavior can be described in the framework of the scale relativity theory, in any of its forms (standard form in Nottale’s sense and/or the form of the multifractal theory of motion). By operating in the context of the multifractal theory of motion, based on multifractalization through non-Markovian stochastic processes, the main results of Nottale’s theory can be generalized (specific momentum conservation laws, both at differentiable and non-differentiable resolution scales, specific momentum conservation law associated with the differentiable–non-differentiable scale transition, etc.). In such a context, all results are explicated through analyzing biological processes, such as acute arterial occlusions as scale transitions. Thus, we show through a biophysical multifractal model that the blocking of the lumen of a healthy artery can happen as a result of the “stopping effect” associated with the differentiable-non-differentiable scale transition. We consider that blood entities move on continuous but non-differentiable (multifractal) curves. We determine the biophysical parameters that characterize the blood flow as a Bingham-type rheological fluid through a normal arterial structure assimilated with a horizontal “pipe” with circular symmetry. Our model has been validated based on experimental clinical data.


1971 ◽  
Vol 26 (25) ◽  
pp. 1589-1592 ◽  
Author(s):  
N. N. Biswas ◽  
N. M. Cason ◽  
V. P. Kenney ◽  
J. T. Powers ◽  
W. D. Shephard ◽  
...  

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