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Recent experimental studies focusing on the morphological properties of surfaces eroded by ion-bombardment report the observation of self-affine fractal surfaces, while others provide evidence about the development of a periodic ripple…

Statistical Mechanics · Physics 2008-02-03 A. -L. Barabasi , M. A. Makeev , C. S. Lee , R. Cuerno

Defects in hexagonal boron nitride (hBN) exhibit single-photon emission (SPE) and are thus attracting broad interest as platforms for quantum information and spintronic applications. However, the atomic structure and the specific impact of…

Two-dimensional hexagonal boron nitride offers intriguing opportunities for advanced studies of light-matter interaction at the nanoscale, specifically for realizations in quantum nanophotonics. Here, we demonstrate the engineering of…

Applied Physics · Physics 2020-04-20 Mehran Kianinia , Simon White , Johannes E. Fröch , Carlo Bradac , Igor Aharonovich

The thermal conductivity of suspended few-layer hexagonal boron nitride (h-BN) was measured using a micro-bridge device with built-in resistance thermometers. Based on the measured thermal resistance values of 11-12 atomic layer h-BN…

Materials Science · Physics 2013-02-18 Insun Jo , Michael Thompson Pettes , Jaehyun Kim , Kenji Watanabe , Takashi Taniguchi , Zhen Yao , Li Shi

The electrical evaluation of the crystallinity of hexagonal boron nitride (h-BN) is still limited to the measurement of dielectric breakdown strength, in spite of its importance as the substrate for 2-dimensional van der Waals…

Materials Science · Physics 2018-01-29 Y. Hattori , T. Taniguchi , K. Watanabe , K. Nagashio

Hexagonal boron nitride (hBN), a two-dimensional (2D) material, garners interest for hosting bright quantum emitters at room temperature. A great variety of fabrication processes have been proposed with various yields of quantum emitters.…

The problem of antiproton scattering on the molecular Hydrogen is investigated by means of wave packet dynamics. The electronically potential energy surfaces of the antiproton H2 system are presented within this work. Excitation and…

Atomic Physics · Physics 2015-09-02 Henrik Stegeby , Markus Kowalewski , Konrad Piszczatowski , Hans O. Karlsson

Understanding and controlling the way excitons propagate in solids is a key for tailoring materials with improved optoelectronic properties. A fundamental step in this direction is the determination of the exciton energy-momentum…

Positron beams, both polarized and non-polarized, low and high energy have a wide range of applications and many methods can be used to produce them. In this paper we analyse the two main methods used to produce positrons for accelerator…

Accelerator Physics · Physics 2021-03-25 Alberto Bacci , Francesco Broggi , Vittoria Petrillo , Luca Serafini

Based on an invariant embedding principle for the backscattering function we calculate the electron emission yield for metal surfaces at very low electron impact energies. Solving the embedding equation within a quasi-isotropic…

Materials Science · Physics 2022-04-06 F. X. Bronold , H. Fehske

We have measured the ionization efficiency of silicon nuclear recoils with kinetic energy between 1.8 and 20 keV. We bombarded a silicon-drift diode with a neutron beam to perform an elastic-scattering experiment. A broad-energy neutron…

X-ray Thomson scattering is being developed as a method to measure the temperature, electron density, and ionization state of high energy density plasmas such as those used in inertial confinement fusion. Most experiments are currently done…

Plasma Physics · Physics 2015-06-17 J. Nilsen , W. R. Johnson , K. T. Cheng

Optical excitations in hexagonal nanonetwork materials, for example, Boron-Nitride (BN) sheets and nanotubes, are investigated theoretically. The bonding of BN systems is positively polarized at the B site, and is negatively polarized at…

Materials Science · Physics 2016-08-31 Kikuo Harigaya

To better assess the role that electrons play in exosphere production on icy-rich bodies, we measured the total and O$_2$ sputtering yields from H$_2$O-ice for electrons with energies between 0.75 and 10 keV and temperatures between 15 and…

Earth and Planetary Astrophysics · Physics 2024-06-21 Rebecca A. Carmack , Mark J. Loeffler

The deuteron-proton elastic scattering has been studied in the multiple scattering expansion formalism. The essential attention has been given to such relativistic problem as a deuteron wave function in a moving frame and transformation of…

Nuclear Theory · Physics 2009-01-26 N. B. Ladygina

The twisted hexagonal boron nitride (hBN) bilayer has demonstrated exceptional properties, particularly the existence of electronic flat bands without needing a magic angle, suggesting strong excitonic effects. Therefore, a systematic…

Strongly Correlated Electrons · Physics 2023-08-25 Pedro Roman-Taboada , Estefania Obregon-Castillo , Andrés R. Botello-Mendez , Cecilia Noguez

The structure of low-carbon steel after twist extrusion is tested with using electron backscattered diffraction. It has been shown that warm twist extrusion results in grain refinement with conservation of a substantial part of high-angle…

Intensity of positron reemission from a metal is related to its work function. This property is dependent on temperature and can be modified with temperature control. In this article a simple model is proposed to explain and predict the…

Materials Science · Physics 2016-02-05 Reza Rahemi

Miniaturization of electronic components has led to overheating, increasing power consumption and causing early circuit failures. Conventional heat dissipation methods are becoming inadequate due to limited surface area and higher…

The recent discovery of single-photon emitting defects hosted by the two-dimensional wide band gap semiconductor hexagonal boron nitride (hBN) has inspired a great number of experiments. Key characteristics of these quantum emitters are…

Mesoscale and Nanoscale Physics · Physics 2019-08-05 Tobias Vogl , Marcus W. Doherty , Ben C. Buchler , Yuerui Lu , Ping Koy Lam
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