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Spincoated polystyrene films of different thickness from 78 nm to 1.3 {\mu}m on silicon wafers were treated by nitrogen ions with an energy of 20 keV. Ellipsometric measurements and FTIR spectra showed modification of the surface layer…

Chemical Physics · Physics 2025-03-27 Alexey Kondyurin

Co and CoO thin films were deposited by magnetron sputtering in the form of multilayers. They were irradiated with Ar and Si ion beams of different energies and fluences. The magnetic properties were investigated.

Materials Science · Physics 2016-08-22 A. S. Bhattacharyya

Understanding the mechanisms of plasticity in structural steels is essential for the operation of next-generation fusion reactors. Elemental composition, particularly the amount of Cr present, and irradiation can have separate and…

Materials Science · Physics 2022-07-06 Kay Song , Hongbing Yu , Phani Karamched , Kenichiro Mizohata , David Armstrong , Felix Hofmann

The investigation of fragile and potentially inhomogeneous forms of ferromagnetic order under extreme conditions, such as low temperatures and high pressures, is of central interest for areas such as geophysics, correlated electron systems,…

Strongly Correlated Electrons · Physics 2016-05-19 Michael Schulz , Andreas Neubauer , Peter Böni , Christian Pfleiderer

Hexagonal boron nitride (h-BN) is well-established as a requisite support, encapsulant and barrier for 2D material technologies, but also recently as an active material for applications ranging from hyperbolic metasurfaces to room…

SrTiO$_{3}$ is one of the most popular insulating single-crystal substrates for various complex-oxide thin film growths, because of its good lattice match with many complex oxide films. Here, we show that a common thin film processing…

Materials Science · Physics 2011-10-11 Heiko Gross , Namrata Bansal , Yong-Seung Kim , Seongshik Oh

We are proposing a novel method of laser heating control only through change in polarization of the incident light, keeping its power density constant. The idea combines antenna effect found in isolated multi-walled carbon nanotubes and the…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 M. Zdrojek , J. Judek , M. Wasik

In the majority of cases nanostructures prepared by focused electron beam induced deposition (FEBID) employing an organometallic precursor contain predominantly carbon-based ligand dissociation products. This is unfortunate with regard to…

Mesoscale and Nanoscale Physics · Physics 2017-05-01 Evgeniya Begun , Oleksandr V. Dobrovolskiy , Maksym Kompaniiets , Roland Sachser , Christian Gspan , Harald Plank , Michael Huth

Ion irradiation provides a promising substitute to neutron tests for investigating the effects of radiation on materials for fission and fusion reactor plants. Here we show proton irradiation can quantitatively reproduce precipitation that…

Laser beam shaping offers remarkable possibilities to control and optimise process stability and tailor material properties and structure in laser-based welding and additive manufacturing. However, little is known about the influence of…

Materials Science · Physics 2023-11-14 Amin Ebrahimi , Mohammad Sattari , Aravind Babu , Arjun Sood , Gert-willem Römer , Marcel Hermans

B and N K-edge x-ray absorption spectroscopy measurements have been performed on three BN thin films grown on Si substrates using ion-assisted pulsed laser deposition. Comparison of the films' spectra to those of several single-phase BN…

Condensed Matter · Physics 2007-05-23 A. Chaiken , L. J. Terminello , J. Wong , G. L. Doll , T. Sato

The production of ion beams from the interaction of a circularly polarized laser pulse with a nanometric double-layer target is discussed in the regime where all electrons are expelled from the target by laser radiation pressure.…

Plasma Physics · Physics 2013-09-06 M. Grech , S. Skupin , R. Nuter , L. Gremillet , E. Lefebvre

The scarcity of fossil fuels as carbon resources has motivated the steelmaking industry to search for new carbon sources such as end-of-life polymeric products. Using $\textit{ab initio}$ molecular dynamics simulation, we demonstrate that…

Materials Science · Physics 2022-04-20 M. Hussein N. Assadi , Veena Sahajwalla

Radiation therapy with carbon ions is a novel technique of cancer radiotherapy, applicable in particular to treating radioresistant tumours at difficult localisations. Therapy planning, where the medical physicist, following the medical…

Medical Physics · Physics 2014-10-07 Leszek Grzanka

The cutting of single-walled carbon nanotubes by an 80 keV electron beam catalyzed by nickel clusters is imaged in situ using aberration-corrected high-resolution transmission electron microscopy. Extensive molecular dynamics simulations…

Two sets of amorphous carbon materials prepared at different routes are irradiated with swift (145 MeV) heavy ion (Ne6+). The structural parameters like the size of ordered grains along c and a axis i.e. Lc & La, the average spacing of the…

Materials Science · Physics 2007-05-23 A. Sarkar , K. Dasgupta , P. Barat , P. Mukherjee , D. Sathiyamoorthy

Porous heteroatom-doped carbons are desirable for catalytic reactions due to their tunable physicochemical properties, low cost and metal-free nature. Herein, we introduce a facile general bottom-up strategy, so-called "cooking carbon in a…

Chemical Physics · Physics 2019-01-16 Jiang Gong , Jinshui Zhang , Huijuan Lin , Jiayin Yuan

Fabrication of a multistrip magnetic/nonmagnetic structure in a thin sandwiched Ni layer [Si(5 nm)/Ni(10 nm)/Si] by a focused ion beam (FIB) irradiation has been attempted. A control experiment was initially performed by irradiation with a…

Materials Science · Physics 2015-07-15 B. N. Dev , N. Banu , J. Fassbender , J. Grenzer , N. Schell , L. Bischoff , R. Groetzschel , J. McCord

We demonstrate a new focused ion beam sample preparation method for atom probe tomography. The key aspect of the new method is that we use a neon ion beam for the final tip-shaping after conventional annulus milling using gallium ions. This…

Carbon is one of the most investigated materials and shows chaotic behavior in terms of evolving structure. Synthesizing carbon materials largely depend on the deposition technique, process parameters, condition of substrate surface and…

Materials Science · Physics 2017-08-10 Mubarak Ali , Mustafa Urgen
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