Results 251 to 260 of about 298,748 (284)

Ion irradiation effects in silicon nanowires

MRS Proceedings, 2011
ABSTRACTIon irradiation effects in nanowires are of increasing interest due to potential applications of the wires as e.g. current-carrying elements in transistors or as efficient light emitters. Although several experiments have already demonstrated such functionalities, very few theoretical studies on the fundamental mechanisms of ion irradiation ...
Holmström Eero Kristian, Nordlund Kai, Hoilijoki Sanni   +2 more
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Vibrational spectroscopy of ion-irradiated pentacene

Infrared Physics & Technology, 1994
Abstract In this paper we present a study of the evolution of the IR and Raman spectrum of pentacene before, during and after irradiation with energetic ion beams, demonstrating the complex chemistry induced by incoming ions. The formation of a “new” aromatic network has been evidenced. Dehydrogenation occurs and the evolution towards what we call an
CANNIA R, STRAZZULLA G, COMPAGNINI, Giuseppe Romano, BARATTA GA   +3 more
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Optical constants in ion-irradiated graphite

Surface and Coatings Technology, 1994
Abstract The ion-beam-induced amorphization of crystalline graphite layers was studied by using near-IR visible and near-UV reflectance spectra to obtain the real and imaginary parts of the refractive index as a function of photon energy in the range 0.5–7 eV.
COMPAGNINI, Giuseppe Romano, FOTI G.
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Vibrational spectroscopy of ion-irradiated ices

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2001
In the last 20 years we have studied some effects induced by fast ions (E approximately keV-MeV) impinging on solid materials (mainly ices) with a view to their astrophysical relevance. The main techniques used have been infrared and Raman spectroscopy.
G, Strazzulla, G A, Baratta, M E, Palumbo   +2 more
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Ion Irradiation on Phase Change Materials

MRS Proceedings, 2011
ABSTRACTIon irradiation with 130 keV Ge+ or 120 keV Sb+ has modified, by thermal spike effect, the local atomic arrangement in the structure of as-deposited sputtered amorphous GeTe and Ge2Sb2Te5 thin films. The changes in the local order have been analyzed by Raman and EXAFS spectroscopy.
E Rimini, E Carria, A Mio, M Miritello, S Gibilisco, C Bongiorno, G D'Arrigo, C Spinella, F D'Acapito, M Grimaldi   +9 more
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Ion-chain interaction in keV ion-beam-irradiated polystyrene

Applied Physics Letters, 1987
Molecular weight distribution has been measured in monodisperse polystyrene film (MW=9 000 amu) after ion bombardment, in the ion fluence range 1011–1013 ions/cm2. The chosen beams are 100 keV He, 200 keV Ne, and 400 keV Ar. The experimental data have been interpreted in terms of a simple statistical model for cross-links.
CALCAGNO, Lucia, FOTI G, LICCIARDELLO, Antonino, PUGLISI O.   +3 more
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Irradiation response of Nd2Zr2O7 under heavy ions irradiation

Journal of the European Ceramic Society, 2018
Abstract This paper studied the irradiation behavior of Nd2Zr2O7 ceramics under 2.0 MeV Xe20+ irradiation to high fluences from 4.08 × 1013 ions/cm2 to 5.28 × 1016 ions/cm2. Phase transformation, from pyrochlore to fluorite and finally to amorphization, have been discovered.
Qi Qing, Xiaoyan Shu, Dadong Shao, Haibin Zhang, Fangting Chi, Xirui Lu   +5 more
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Ion Irradiation of Preceramic Polymer Thin Films

Journal of the American Ceramic Society, 1996
Thin films of two preceramic polymers, namely polycarbosilane (PCS) and a silicone resin (SR350), were deposited on Si substrates. Instead of employing conventional annealing at high temperatures in an inert atmosphere, ion irradiation was used to achieve the polymer‐to‐ceramic conversion.
J. C. PIVIN, COLOMBO, PAOLO, M. TONIDANDEL   +2 more
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Irradiation Damage Determined Field Emission of Ion Irradiated Carbon Nanotubes

ACS Applied Materials & Interfaces, 2014
Figuring out the underlying relationship between the field emission (FE) properties and the ion irradiation induced structural change of carbon nanotubes (CNTs) is of great importance in developing high-performance field emitters. We report here the FE properties of Si and C ion irradiated CNTs with different irradiation doses.
Jian-Hua, Deng, Xing-Gang, Hou, Lin, Cheng, Fan-Jie, Wang, Bin, Yu, Guo-Zheng, Li, De-Jun, Li, Guo-An, Cheng, Shaolong, Wu   +8 more
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Xenon Ion Irradiation of α-Fe

Physica Status Solidi (a), 1983
The dislocation loop damage structures generated by low dose (≦ 5 × 1016 ions m−2) 80 keV Xe++ ion irradiations of α-Fe at room temperature and 77 K are studied by transmission electron microscopy, b = a/2〈111〉 loops are observed for each irradiation condition whereas b = a〈100〉 loops are not observed after irradiation at 77 K and are only observed at ...
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