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Calorimeters for particle physics experiments with integration time of a few ns will substantially improve the capability of the experiment to resolve event pileup and to reject backgrounds. In this paper the time development of hadronic…

Instrumentation and Detectors · Physics 2018-05-24 Dmitri Denisov , Strahinja Lukić , Nikolai Mokhov , Sergei Striganov , Predrag Ujić

We propose here a new platform for a realization of novel nonvolatile optical switching devices that takes an advantage of high field confinement provided by plasmonics and multi-state programming capabilities of chalcogenide phase change…

Optics · Physics 2021-12-20 Jacek Gosciniak

Mechanical oscillators are at the heart of many sensor applications. Recently several groups have developed oscillators that are probed optically, fabricated from high-stress silicon nitride films. They exhibit outstanding force…

Optics · Physics 2017-04-13 Jingkun Guo , Richard A. Norte , Simon Gröblacher

Periodically time-varying media, known as photonic time crystals (PTCs), provide a promising platform for observing unconventional wave phenomena. We analyze the scattering of electromagnetic waves from spatially finite PTCs using the…

Spray flame synthesis offers a promising method for scalable production of homogeneously mixed Y2O3-MgO nanopowders as next-generation infrared-transparent window material, which has attracted significant attention owing to its excellent…

Materials Science · Physics 2025-07-31 Shuting Lei , Yiyang Zhang , Xing Jin , Yanan Li , Zhu Fang , Shuiqing Li

The Wendelstein 7-X (W7-X) Thomson scattering (TS) diagnostic was upgraded to transiently achieve kilohertz sampling rates combined with adjustable measuring times. The existing Nd:YAG lasers are employed to repetitively emit "bursts", i.e.…

Ultra-high temperature ceramics (UHTCs) are interesting materials for a large variety of applications under extreme conditions. This paper reports on the production and extensive characterization of highly dense, pure zirconium and tantalum…

FLASH radiation therapy calls for the delivery of fast bursted spills of particles with dose delivery times of the order of milliseconds. The requirements overlap with fundamental physics experimental requests that are being studied at…

Accelerator Physics · Physics 2022-08-31 Pablo A. Arrutia Sota , Philip N. Burrows , Matthew A. Fraser , Francesco M. Velotti

Nanocrystalline bulk materials are desirable for many applications as they combine mechanical strength and specific electronic transport properties. Our bottom up approach starts with tailored nanoparticles. Compaction and thermal treatment…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 D. Schwesig , G. Schierning , R. Theissmann , N. Stein , N. Petermann , H. Wiggers , R. Schmechel

Presented study concerns the possibility of evaluation of interfacial thermal resistance (ITR) between the constituents in composite materials with the use of flash technique. Two variants of such measurement are considered, the first of…

Materials Science · Physics 2017-05-17 Karol Pietrak , Tomasz S. Wiśniewski , Michał Kubiś

The simulation of rare events is one of the key problems in atomistic simulations. Towards its solution a plethora of methods have been proposed. Here we combine two such methods metadynamics and inte-grated tempering sampling. In…

Chemical Physics · Physics 2018-10-29 Yi Isaac Yang , Haiyang Niu , Michele Parrinello

Manufacturing electronic devices by printing techniques with low temperature sintering of nano-size material particles can revolutionize the electronics industry in coming years. The impact of this change to the industry can be significant…

Materials Science · Physics 2007-09-13 Z. Radivojevic , K. Andersson , K. Hashizume , M. Heino , M. Mantysalo , P. Mansikkamaki , Y. Matsuba , N. Terada

We experimentally demonstrate a very large dynamic optical reflection modulation from a simple unpatterned layered stack of phase-change materials ultrathin films. Specifically, we theoretically and experimentally demonstrate that properly…

Ultrafast shadowgraphy is a new experimental technique that uses few cycle laser pulses to image density gradients in a rapidly evolving plasma. It enables structures that move at speeds close to the speed of light, such as laser driven…

Plasma Physics · Physics 2016-07-25 E. Siminos , S. Skupin , A. Sävert , J. M. Cole , S. P. D. Mangles , M. C. Kaluza

We show theoretically that coherent light can be completely absorbed in a two-dimensional or three-dimensional metallic nanostructure by matching the frequency and field pattern of an incident wave to that of a localized surface plasmon…

Optics · Physics 2015-05-30 Heeso Noh , Yidong Chong , A. Douglas Stone , Hui Cao

An elastic-visco-plastic thermomechanical model for the simulation of cold forming and subsequent sintering of ceramic powders is introduced and based on micromechanical modelling of the compaction process of granulates. Micromechanics…

Computational Engineering, Finance, and Science · Computer Science 2019-07-19 D. Kempen , A. Piccolroaz , D. Bigoni

We present an atomistic-continuum model to simulate ultrashort laser-induced melting processes in semiconductor solids on the example of silicon. The kinetics of transient non-equilibrium phase transition mechanisms is addressed with a…

Materials Science · Physics 2015-11-26 V. P. Lipp , B. Rethfeld , M. E. Garcia , D. S. Ivanov

Plasma ignition is critical in various scientific and industrial applications, demanding an efficient and robust execution mechanism. In this work, we present an innovative approach to plasma ignition by incorporating the analysis of…

The ability to confine light down to atomic scales is critical for the development of applications in optoelectronics and optical sensing as well as for the exploration of nanoscale quantum phenomena. Plasmons in metallic nanostructures can…