English
Related papers

Related papers: Graphite creep negation during flash spark plasma …

200 papers

The ability to pattern graphene at low temperatures in a scalable manner is one of the greatest challenges facing graphene industrial adoption today. We demonstrate a simple method for low-temperature gold-catalyzed etching of graphite with…

Applied Physics · Physics 2018-04-25 Ian Carroll , Tanya Klowden , Isabel Alvarez , Henk W. Ch. Postma

Sapphire (single-crystal Al2O3) is a representative Earth material and is used as a window and/or anvil in shock experiments. Pressure, for example, at the core-mantle boundary is about 130 gigapascals (GPa). Defects induced by 100-GPa…

Materials Science · Physics 2015-05-13 W. J. Nellis , G. I. Kanel , S. V. Razorenov , A. S. Savinykh , A. M. Rajendran

We theoretically investigate the plasmonic heating of graphene-based systems under the mid-infrared laser irradiation, where periodic arrays of graphene plasmonic resonators are placed on dielectric thin films. Optical resonances are…

Applied Physics · Physics 2019-12-18 Anh D. Phan , Do T. Nga , Do C. Nghia , Vu D. Lam , Katsunori Wakabayashi

The temperature dependence of the steady-state fluorescence spectrum of anthracene crystals range from 300K to 500K had been investigated, which was in the temperature range of most tabletop laser-driven shock wave experiments. The…

Applied Physics · Physics 2019-08-06 Cheng Tang , Xiaojun Zhu , Yunfei Song , Weilong Liu , Qingxin Yang , Zhe lv , Yanqiang Yang

We investigate the near-field radiative heat transfer between a normally and/or laterally shifted nanoparticle and a planar fused silica slab coated with a strip graphene grating. For this study we develop and use a scattering matrix…

Mesoscale and Nanoscale Physics · Physics 2025-02-20 Minggang Luo , Youssef Jeyar , Brahim Guizal , Mauro Antezza

Raman studies of nanocomposite SiCN thin film by sputtering showed that with an increase of substrate temperature from room temperature to 500oC, a transition from mostly sp2 graphitic phase to sp3 carbon took place which was observed from…

Materials Science · Physics 2016-11-24 A. S. Bhattacharyya , S. K. Mishra

The kinetics for O2 oxidation of individual graphite and graphene platelet nanoparticles (NPs) were studied as a function of temperature (1200 to 2200 K) at varying oxygen partial pressures, using a single nanoparticle mass spectrometry…

Pinning and thermal creep determine the response of numerous systems containing superstructures, e.g., vortices in type II superconductors, domain walls in ferroics, or dislocations in metals. The combination of drive and thermal…

Superconductivity · Physics 2018-09-19 Martin Buchacek , Roland Willa , Vadim B. Geshkenbein , Gianni Blatter

The paper demonstrates the prospects of Spark Plasma Sintering (SPS) for the high-speed diffusion welding of the high-strength ultrafine-grained (UFG) near-a Ti-5Al-2V alloy. The effect of increased diffusion welding intensity in the UFG Ti…

Ripples in pristine freestanding graphene naturally orient themselves in an array that is alternately curved-up and curved-down; maintaining an average height of zero. Using scanning tunneling microscopy (STM) to apply a local force, the…

Mesoscale and Nanoscale Physics · Physics 2015-06-23 J. K. Schoelz , P. Xu , V. Meunier , P. Kumar , M. Neek-Amal , P. M. Thibado , F. M. Peeters

We have studied the magnetic response of two bulk highly oriented pyrolytic graphite (HOPG) samples with different internal microstructure. For the sample with well defined interfaces, parallel to the graphene layers, the temperature and…

Superconductivity · Physics 2013-07-09 T. Scheike , P. Esquinazi , A. Setzer , W. Böhlmann

We found that the current-voltage characteristics of the single-layer graphene field-effect transistors exhibit an intriguing feature - an abrupt change of the current near zero gate bias at elevated temperatures T > 500 K. The strength of…

Materials Science · Physics 2015-05-27 Sergey L. Rumyantsev , Guanxiong Liu , Michael S. Shur , Alexander A. Balandin

Temperature and field dependent measurements of the electrical resistance of different natural graphite samples, suggest the existence of superconductivity at room temperature in some regions of the samples. To verify whether…

Superconductivity · Physics 2018-02-02 Markus Stiller , Pablo D. Esquinazi , Jose Barzola-Quiquia , Christian E. Precker

Water vitrifies if cooled at rates above $3 \cdot 10^5$ K/s. Surprisingly, this process cannot simply be reversed by heating the resulting amorphous ice at a similar rate. Instead, we have recently shown that the sample transiently…

Chemical Physics · Physics 2024-02-01 Constantin R. Krüger , Nathan J. Mowry , Marcel Drabbels , Ulrich J. Lorenz

The surprisingly rapid relaxation of the sustainable current density in the critical state of single crystalline Ba$_{1-x}$K$_{x}$Fe$_{2}$As$_{2}$ is investigated for magnetic fields oriented parallel to the c-axis and to the $ab$--plane…

We consider suspened bilayer graphene under applied perpendicular electric bias field that is known to generate a single particle gap $2\Delta$ and a related electric polarization ${\cal P}$. We argue that the bias also drives a quantum…

Mesoscale and Nanoscale Physics · Physics 2023-01-20 Harley D. Scammell , Oleg P. Sushkov

Direct and inverse Auger scattering are amongst the primary processes that mediate the thermalization of hot carriers in semiconductors. These two processes involve the annihilation or generation of an electron-hole pair by exchanging…

Magneto-optical imaging was used to study a zero-field-cooled MgB2 film at 9.6K where in a slowly increasing field the flux penetrates by abrupt formation of large dendritic structures. Simultaneously, a gradual flux penetration takes…

Superconductivity · Physics 2009-11-07 D. V. Shantsev , P. E. Goa , F. L. Barkov , T. H. Johansen , W. N. Kang , S. I. Lee

The cooling of hot electrons in graphene is the critical process underlying the operation of exciting new graphene-based optoelectronic and plasmonic devices, but the nature of this cooling is controversial. We extract the hot electron…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 Matt W. Graham , Su-Fei Shi , Daniel C. Ralph , Jiwoong Park , Paul L. McEuen

Spoof plasmons mimic noble metal plasmons. The equivalent of the plasma frequency is an energy scale imposed by the geometry of the metal grating upon which they propagate. In this paper we show that the dispersion of spoof plasmons in the…

Mesoscale and Nanoscale Physics · Physics 2017-08-21 Eduardo J. C. Dias , N. M. R. Peres