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Differential scanning calorimetry (DSC) is one of the most versatile probes for silicate glasses, allowing determination of, e.g., transition temperatures (glass, crystallization, melting) and the temperature dependence of heat capacity.…

From ultraviolet to mid-infrared region, light-matter interaction mechanisms in semiconductors progressively shift from electronic transitions to phononic resonances and are affected by temperature. Here, we present a parallel…

光学 · 物理学 2023-06-01 Zherui Han , Changkyun Lee , Jiawei Song , Haiyan Wang , Peter Bermel , Xiulin Ruan

The viscosity of an optical fibre over 1000 to 1150 {\deg}C is studied by inscribing an optical fibre Bragg grating that can withstand temperatures up to 1200 {\deg}C and monitoring fibre elongation under load through the Bragg wavelength…

材料科学 · 物理学 2014-01-22 Li-Yang Shao , John Canning , Tao Wang , Kevin Cook , Hwa-Yaw Tam

The temperature dependence of optical constants of titanium nitride thin film is investigated using spectroscopic ellipsometry between 1.4 to 5 eV in the temperature range 300 K to 650 K in steps of 50 K. The real and imaginary parts of the…

材料科学 · 物理学 2016-11-26 S. Tripura Sundari , R. Ramaseshan , Feby Jose , S. Dash , A. K. Tyagi

We explore the temperature-dependent plasmonic modes of an n-doped double-layer silicene system which is composed of two spatially separated single layers of silicene with a distance large enough to prevent the interlayer electron…

介观与纳米尺度物理 · 物理学 2021-10-07 N. Dadkhah , T. Vazifehshenas , M. Farmanbar , T. Salavati-fard

The optical properties of monocrystalline, intrinsic silicon are of interest for technological applications as well as fundamental studies of atom-surface interactions. For an enhanced understanding, it is of great interest to explore…

材料科学 · 物理学 2022-07-26 C. Moore , C. M. Adhikari , T. Das , L. Resch , C. A. Ullrich , U. D. Jentschura

When designing and studying circuits operating at cryogenic temperatures understanding local heating within the circuits is critical due to the temperature dependence of transistor and noise behavior. We have investigated local heating…

材料科学 · 物理学 2010-08-23 J. Hamlet , K. Eng , T. Gurrieri , J. Levy , M. Carroll

We use an effective field model (transverse Ising model) to describe the dependence on the temperature of the energy gap of some two-dimensional $(2-D)$ superconducting systems. The order parameter of this model is put in a direct…

超导电性 · 物理学 2007-05-23 E. C. Bastone , P. R. Silva

It was recently demonstrated that feeding a silicon-in-silica coaxial fibre into a flame$\mathord{-}$imparting a steep silica viscosity gradient$\mathord{-}$results in the formation of silicon spheres whose size is controlled by the feed…

流体动力学 · 物理学 2021-12-10 Isha Shukla , Fan Wang , Saviz Mowlavi , Amy Guyomard , Xiangdong Liang , Steven G. Johnson , J. -C. Nave

We demonstrate refractive index trimming of visible-light silicon nitride (SiN) waveguides using suspended heater structures. The thermal isolation of the suspended heaters enabled a semi-uniform temperature distribution with estimated…

The Extreme-Ultraviolet Imaging Spectrometer on board the HINODE satellite is used to examine the loop system described in Marsh et al. (2009) by applying spectroscopic diagnostic methods. A simple isothermal mapping algorithm is applied to…

太阳与恒星天体物理 · 物理学 2014-11-20 M. S. Marsh , R. W. Walsh

The thermodynamic properties of subsystems in strong interaction with the neighborhood can largely differ from the standard behavior. Here we study the thermodynamic properties of rings and triplets in equilibrated disordered 2D-silica.…

无序系统与神经网络 · 物理学 2019-01-16 Projesh Kumar Roy , Andreas Heuer

Calcium fluoride (fluorspar, CaF2 ) is of consummate importance for the manufacturing of optical components. In many cases, its wide transmission band eliminates the need for antireflective coatings. It is thus of interest to study its…

材料科学 · 物理学 2025-09-10 T. Das , D. Alam , C. A. Ullrich , U. D. Jentschura

We investigate the effect of line of sight temperature variations and noise on two commonly used methods to determine dust properties from dust continuum observations of dense cores. One method employs a direct fit to a modified blackbody…

星系天体物理 · 物理学 2011-02-11 Rahul Shetty , Jens Kauffmann , Scott Schnee , Alyssa A. Goodman , Barbara Ercolano

During electrostatic bonding, also known as anodic bonding, silicon is bonded to glass by applying an external voltage and simultaneous heating to temperatures of 200...450 $\deg$C. While cooling to working temperature after bonding…

材料科学 · 物理学 2018-02-08 Leonid S. Sinev

The use of fused-silica ribbons as suspensions in gravitational wave interferometers can result in significant improvements in pendulum mode thermal noise. Surface loss sets a lower bound to the level of noise achievable, at what level…

广义相对论与量子宇宙学 · 物理学 2009-10-31 Andri M. Gretarsson , Sheila Rowan , Geppo Cagnoli , Gregory M. Harry , Jim Hough , Steven D. Penn , Peter R. Saulson , William J. Startin

Interferometric gravitational wave detectors use mirrors whose substrates are formed from materials of low intrinsic mechanical dissipation. The two most likely choices for the test masses in future advanced detectors are fused silica or…

广义相对论与量子宇宙学 · 物理学 2009-11-07 D. R. M. Crooks , P. Sneddon , G. Cagnoli , J. Hough , S. Rowan , M. M. Fejer , E. Gustafson , R. Route , N. Nakagawa , D. Coyne , G. M. Harry , A. M. Gretarsson

We show that doubly peaked electric fields are necessary to describe grazing-angle charge collection measurements of irradiated silicon pixel sensors. A model of irradiated silicon based upon two defect levels with opposite charge states…

We seek to understand the impact on shape estimators obtained from circular and elliptical shapelet models under two realistic conditions: (a) only a limited number of shapelet modes is available for the model, and (b) the intrinsic…

天体物理仪器与方法 · 物理学 2014-07-24 P. Melchior , A. Boehnert , M. Lombardi , M. Bartelmann

An interferometric method is implemented in order to accurately assess the thermal fluctuations of a micro-cantilever sensor in liquid environments. The power spectrum density (PSD) of thermal fluctuations together with Sader's model of the…

软凝聚态物质 · 物理学 2015-11-11 Felipe Aguilar Sandoval , Manuel Sepúlveda , Ludovic Bellon , Francisco Melo