Autor: Augé, F. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Towards Attosecond Pulses with High Harmonics
Autorzy:: Agostini, P.
Paul, P. M.
Breger, P.
Toma, E. S.
Muller, H. G.
Mullot, G.
Augé, F.
Balcou, Ph.
Tematy:: 42.65.Re
42.65.Ky
32.80.Rm
33.60.Cv; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/2030463.pdf Link otwiera się w nowym oknie
Opis:: The high harmonics produced by focusing an intense femtosecond laser in a gas are theoretically shown to be locked in phase. The physics of this locking is discussed and a new method based on quantum interference in two-photon, two-color ionization allowing to retrieve the relative phase of harmonic pairs is described. The main result is that the 5 harmonics of orders 11-19 produced in argon generate a train of subfemtosecond pulses with a period of 1.35 fs and a duration of 250 attoseconds.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: From Magnetic Nanoparticles to Magnetoresistive Biosensors
Autorzy:: Ennen, I.
Albon, C.
Weddemann, A.
Auge, A.
Hedwig, P.
Wittbracht, F.
Regtmeier, A.
Akemeier, D.
Dreyer, A.
Peter, M.
Jutzi, P.
Mattay, J.
Mitzel, N.
Mill, N.
Hütten, A.
Tematy:: 85.70.-w
85.75.-d
75.75.Fk
64.75.Yz
87.85.fk; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1490090.pdf Link otwiera się w nowym oknie
Opis:: This paper highlights recent advances in synthesis and magnetotransport properties of magnetic Co nanoparticles. It is shown that magnetic Co nanoparticles self-assembled in nanoparticular monolayers revealing giant magnetoresistance similar to granular systems but with additional features resulting from dipolar interactions between small domains of nanoparticles. A spin-valve with one magnetic Co nanoparticular electrode is employed as a model to demonstrate that individual magnetic moments of Co nanoparticles can be coupled to a magnetic Co layer which in turn offers tailoring of the resulting giant magnetoresistance characteristics. In addition, it is demonstrated that combining a magnetic on-off ratchet with magnetic tunneling junctions integrated in the ratchet introduces a new biosensor concept enabling: (1) simultaneous transporting and separating biomolecules, (2) dynamical biomolecule detection when passing magnetic tunneling junctions in a 1D arrangement. It is projected that this biosensor concept could be applied for viruses as well as for bacteria.
Dostawca treści:: Biblioteka Nauki

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