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The creation and ultrastructure of kink-bands in flax fibres are key issues for developing more and more performing biobased composite materials. Nevertheless, despite many hypotheses and structural characterization, the exact origin of…

As far as the tensile properties of natural fibres as reinforcements for composites are concerned, flax fibres will stay at the top-end. However, an efficient conversion of fibre properties into their corresponding composite properties has…

应用物理 · 物理学 2019-05-07 Rishad Rayyaan , William Richard Kennon , Prasad Potluri , Mahmudul Akonda

In this paper we analyze theoretically how the introduction of the third component into the two-dimensional photonic crystal influences the photonic band structure and the density-of-states of the system. We consider the periodic array of…

光学 · 物理学 2008-10-17 Alexander Glushko , Lyudmila Karachevtseva

The band structures of the photonic crystal slabs play a significant role in manipulating the flow of light and pre-dicting exotic physics in photonics. In this letter, we show that the key features of photonic band structures can be…

光学 · 物理学 2023-04-20 Wenze Lan , Peng Fu , Chang-Yin Ji , Gang Wang , Yugui Yao , Changzhi Gu , Baoli Liu

We demonstrate insights into the three-dimensional structure of defects in graphene, in particular grain boundaries, obtained via a new approach from two transmission electron microscopy images recorded at different angles. The structure is…

We investigate with relativistic MHD simulations the dissipation physics of BL Lac jets, by studying the synchrotron polarization signatures of particles accelerated by the kink instability in a magnetically-dominated plasma column. The…

高能天体物理现象 · 物理学 2020-12-02 Gianluigi Bodo , Fabrizo Tavecchio , Lorenzo Sironi

The use of coherent x-ray beams has been greatly developing for the past decades. They are now used by a wide scientific community to study biological materials, phase transitions in crystalline materials, soft matter, magnetism, strained…

材料科学 · 物理学 2010-09-01 V. L. R. Jacques , S. Ravy , D. Le Bolloc'h , E. Pinsolle , M. Sauvage-Simkin , F. Livet

Context. In the coronal open-field regions, such as coronal holes, there are many transverse waves propagating along magnetic flux tubes, generally interpreted as kink waves. Previous studies have highlighted their potential in coronal…

太阳与恒星天体物理 · 物理学 2024-09-18 Yuhang Gao , Tom Van Doorsselaere , Hui Tian , Mingzhe Guo , Konstantinos Karampelas

The performance of highly-multiplexed spectrographs is limited by focal degradation (FRD) in the optical fibres. It has already been shown that this is caused mainly by processes concentrated around the mounting points at the ends of the…

天体物理仪器与方法 · 物理学 2015-06-17 Jeremy Allington-Smith , Colin Dunlop , Graham Murray , Ulrike Lemke

Collagen fibrils are the main structural component of load-bearing tissues such as tendons, ligaments, skin, the cornea of the eye, and the heart. The D-band of collagen fibrils is an axial periodic density modulation that can be easily…

生物物理 · 物理学 2021-09-30 Matthew P. Leighton , Andrew D. Rutenberg , Laurent Kreplak

An optical kink is a shock-wave-like field structure which can appear in a resonant two-level medium as a result of the nonlinear process of self-steepening. We numerically simulate this process using an adiabatically switching waveform as…

光学 · 物理学 2017-05-23 Denis Novitsky

We present a computational framework to explore the effect of microstructure and constituent properties upon the fracture toughness of fibre-reinforced polymer composites. To capture microscopic matrix cracking and fibre-matrix debonding,…

应用物理 · 物理学 2020-11-03 Wei Tan , Emilio Martínez-Pañeda

Collagen fiber orientations in bones, visible with Second Harmonic Generation (SHG) microscopy, represent the inner structure and its alteration due to influences like cancer. While analyses of these orientations are valuable for medical…

计算机视觉与模式识别 · 计算机科学 2020-06-29 Lars Schmarje , Claudius Zelenka , Ulf Geisen , Claus-C. Glüer , Reinhard Koch

Macroporous silicon is widely employed in sensing and optoelectronic applications due to its large internal surface area and adjustable pore structure. However, quantitative correlations between morphology and functionality require…

材料科学 · 物理学 2026-04-09 A. Ramírez-Porras , I. Prado , N. R. Schwarz , U. Steiner

Porosity variations in tubular scaffolds are critical to reproducible, sophisticated applications of electrospun fibers in biomedicine. Established laser micrometry techniques produced ~14,000 datapoints enabling thickness and porosity…

应用物理 · 物理学 2021-11-23 Y. Liu , F. J. Chaparro , Z. Gray , J. Gaumer , D. B. Cybyk , L. Ross , P. Gosser , Z. Tian , Y. Jia , T. Dull , A. L. Yarin , J. J. Lannutti

Physical picture of the emission mechanisms operating in the X-ray binaries was put under question by the simultaneous optical/X-ray observations with high time resolution. The light curves of the two energy bands appeared to be connected…

高能天体物理现象 · 物理学 2012-01-09 Alexandra Veledina , Juri Poutanen , Indrek Vurm

In the previous paper of this series [D. P. Varn, G. S. Canright, and J. P. Crutchfield, Physical Review B, submitted] we detailed a procedure--epsilon-machine spectral reconstruction--to discover and analyze patterns and disorder in…

材料科学 · 物理学 2007-05-23 D. P. Varn , G. S. Canright , J. P. Crutchfield

Solar pores possess irregular and evolving boundaries that are often far from the ideal circular flux tubes assumed in many magnetohydrodynamic (MHD) oscillation models. To tackle this irregularity in a consistent way for wave analysis, we…

太阳与恒星天体物理 · 物理学 2026-05-15 T. J. Duckenfield , D. B. Jess , S. Jafarzadeh , L. A. C. A. Schiavo , S. S. A. Silva , S. D. T. Grant

The kinetic features of secondary magnetic reconnection in a single flux rope undergoing internal kink instability are studied by means of three-dimensional Particle-in-Cell simulations. Several signatures of secondary magnetic reconnection…

等离子体物理 · 物理学 2015-06-22 S. Markidis , G. Lapenta , G. L. Delzanno , P. Henri , M. V. Goldman , D. L. Newman , T. Intrator , E. Laure
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