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The 3D nano-structuring on the <10nm scale allows the refractive index of functional sensory materials(n>2) to be reduced and matched with the cladding of optical fiber(n~1.46) for low-loss integration. A high temperature capable hydrogen…

Mesoscale and Nanoscale Physics · Physics 2015-08-05 Zsolt Poole , Paul Ohodnicki , Aidong Yan , Yuankun Lin , Kevin Chen

Context: Reliable, directly measured optical properties of astrophysical ice analogs in the infrared (IR) and terahertz (THz) range are missing. These parameters are of great importance to model the dust continuum radiative transfer in…

Instrumentation and Methods for Astrophysics · Physics 2019-09-18 B. M. Giuliano , A. A. Gavdush , B. Müller , K. I. Zaytsev , T. Grassi , A. V. Ivlev , M. E. Palumbo , G. A. Baratta , C. Scirè , G. A. Komandin , S. O. Yurchenko , P. Caselli

Temperature dependent Ferromagnetic Resonance measurements performed as a function of diameter on Nickel nanowire arrays reveal several interesting features in these systems. With diameter decrease from 100 nm to 15 nm, a transition induced…

Materials Science · Physics 2015-03-13 C. Tannous , A. Ghaddar , J. Gieraltowski

We present an innovative contactless method suitable to study in-plane thermal transport based on beam-offset frequency-domain thermoreflectance using a one-dimensional heat source with uniform power distribution. Using a one-dimensional…

Pump-probe optical methods like transient grating spectroscopy (TGS) enable rapid, nondestructive thermoelastic property measurements. But, in phonon-dominated ceramics, they can underpredict bulk thermal diffusivity when long mean free…

Sensors based on the phenomenon of surface plasmon resonance have limited sensitivity, up to 123 degree/Refractive Index Unit, which restricts their applicability in detecting subtle changes gin biological media (around 10-5 RIU). To…

Optics · Physics 2026-01-12 Rostyslav Terekhov , Zoya Eremenko , Sergii Kulish

We discuss the calculation of the refractive index by means of the ab initio scalar dielectric function and point out its inherent limitations. To overcome these, we start from the recently proposed fundamental, microscopic wave equation in…

Optics · Physics 2020-09-08 Ronald Starke , Giulio A. H. Schober , René Wirnata , Jens Kortus

We find an unambiguous relationship between disorder-driven features in the temperature dependence of the resistance and the behavior, as functions of the temperature, of the parameters necessary to describe some of the relaxation processes…

We studied the temperature dependence of the light yield of the linear alkyl benzene (LAB)-based and mesitylene-based liquid scintillators. The light yield increases by 23% for both liquid scintillators when the temperature is lowered from…

Instrumentation and Detectors · Physics 2014-02-28 Xia DongMei , Yu BoXiang , Li XiaoBo , Sun XiLei , Ding YaYun , Zhou Li , Cao Jun , Hu Wei , Ye XingCheng , Chen HaiTao , Ding XueFeng , Du Bing

We measure the nonlinear refractive index coefficients in N$_2$, O$_2$ and Ar from visible through mid-infrared wavelengths (\lambda = 0.4 - 2.4 {\mu}m). The wavelengths investigated correspond to transparency windows in the atmosphere.…

Optics · Physics 2016-01-20 S. Zahedpour , J. K. Wahlstrand , H. M. Milchberg

The temperature-dependent diffusion coefficients of interstitial helium atom in $\alpha$-Ti are predicted using the transition state theory. The microscopic parameters in the pre-factor and activation energy of the impurity diffusion…

Materials Science · Physics 2015-06-16 Yong Lu , Fawei Zheng , Ping Zhang

In dense and cold regions of the interstellar medium (ISM), molecules may be adsorbed onto dust grains to form the ice mantles. Once formed, they can be processed by ionizing radiation coming from stellar or interstellar medium leading to…

Instrumentation and Methods for Astrophysics · Physics 2016-09-16 W. R. M. Rocha , S. Pilling , A. L. F. de Barros , D. P. P. Andrade , H. Rothard , P. Boduch

In second-generation, ground-based interferometric gravitational-wave detectors such as Advanced LIGO, the dominant noise at frequencies $f \sim 40$ Hz to $\sim 200$ Hz is expected to be due to thermal fluctuations in the mirrors'…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Geoffrey Lovelace

We present results of theoretical description and numerical calculation of the dynamics of molecular liquids based on the Reference Interaction Site Model / Mode-Coupling Theory. They include the temperature-pressure(density) dependence of…

Chemical Physics · Physics 2007-05-23 A. E. Kobryn , T. Yamaguchi , F. Hirata

We measured the absolute lengths of three single crystal silicon samples by means of an imaging Twyman-Green interferometer in the temperature range from 7 K to 293 K with uncertainties of about 1 nm. From these measurements we extract the…

Materials Science · Physics 2016-08-08 Thomas Middelmann , Alexander Walkov , Guido Bartl , René Schödel

This paper presents a simple and effective wideband method for the determination of material properties, such as the complex index of refraction and the complex permittivity and permeability. The method is explicit (non-iterative) and…

Instrumentation and Detectors · Physics 2010-12-02 Khattiya Chalapat , Kari Sarvala , Jian Li , G. S. Paraoanu

We investigated the complex index of refraction in the x-ray regime of atoms in laser light. The laser (intensity up to 10^13 W/cm^2, wavelength 800nm) modifies the atomic states but, by assumption, does not excite or ionize the atoms in…

Atomic Physics · Physics 2008-11-18 Christian Buth , Robin Santra

Femtosecond laser pulse systems allows to modify in a precise and permanent way the optical properties of atransparent materials. This process enables the direct writing of guiding structures in materials, commonlyknown as waveguides, which…

We present measurements of the temperature and power dependence of the resonance frequency and frequency noise of superconducting niobium thin-film coplanar waveguide resonators, carried out at temperatures well below the superconducting…

Superconductivity · Physics 2009-11-13 Shwetank Kumar , Jiansong Gao , Jonas Zmuidzinas , Benjamin A. Mazin , Henry G. LeDuc , Peter K. Day

We demonstrate thermometry with a resolution of 80 $\mathrm{nK} / \sqrt{\mathrm{Hz}}$ using an isotropic crystalline whispering-gallery mode resonator based on a dichroic dual-mode technique. We simultaneously excite two modes that have a…

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