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The structure of the transient layer at the interface between air and the aqueous solution of silica nanoparticles with the size distribution of particles that has been determined from small-angle scattering has been studied by the X-ray…

Boron-doped molybdenum silicides have been already recognized as attractive candidates for space and ground ultra-high temperature applications far beyond limits of state-of-the-art nickel based superalloys. In this work, we are exploring a…

Materials Science · Physics 2022-08-17 G. Bruzda , W. Polkowski , R. Nowak , A. Polkowska , S. Lech , K. Karczewski , M. Książek , D Giuranno

Enhancement of thermal performance of concrete wall is nowadays of great importance in reducing the operational energy demand of buildings. We developed a new kind of inorganic coating material based on \ce{SiO2}-\ce{Al2O3}-rich minerals…

Materials Science · Physics 2019-01-30 Chol-Jun Yu , Byong-Hyok Ri , Chung-Hyok Kim , Un-Song Hwang , Kum-Chol Ri , Chang-Jin Song , Un-Chol Kim

We show that the superconducting transition temperature Tc of FeSe1-xTex can be computed to reasonable values in a modified McMillan approach in which the electron-phonon coupling is amplified by the antiferromagnetism and the out-of-plane…

Superconductivity · Physics 2019-07-01 C. H. Wong , R. Lortz

Ultrahigh-frequency acoustic-phonon resonators usually require atomically flat interfaces to avoid phonon scattering and dephasing, leading to expensive fabrication processes, such as molecular beam epitaxy. In contrast, mesoporous thin…

We have produced synthetic analogues of cosmic silicates using the Sol Gel method, producing amorphous silicates of composition Mg(x)Ca(1-x)SiO3. Using synchrotron X-ray powder diffraction on Beamline I11 at the Diamond Light Source,…

Earth and Planetary Astrophysics · Physics 2015-06-12 S. J. Day , S. P. Thompson , A. Evans , J. E. Parker

Chemical looping water splitting systems operate at relatively high temperatures (450-800 degree C) to produce, purify, or store hydrogen by the cyclic reduction and oxidation (redox) of a solid oxygen carrier. Therefore, to improve…

Materials Science · Physics 2021-06-15 P. J. LLoreda-Jurado , Jesus Hernandez-Saz , E. Chicardi , A. Paul , R. Sepulveda

The use of cylindrical elastic shells as elements in acoustic metamaterial devices is demonstrated through simulations and underwater measurements of a cylindrical-to-plane wave lens. Transformation acoustics (TA) of a circular region to a…

Classical Physics · Physics 2016-08-24 Alexey S. Titovich , Michael R. Haberman , Andrew N. Norris

Many molecular glass forming liquids show a shift of the glass transition T-g to lower temperatures when the liquid is confined into mesoporous host matrices. Two contrary explanations for this effect are given in literature: First,…

Mesoscale and Nanoscale Physics · Physics 2010-01-22 J. Koppensteiner , W. Schranz , M. R. Puica

We demonstrate here the ordering of block copolymer micelles by ice templating, below 0 {\deg}C. We used this for the preparation of silica monoliths that present an ice-templated macroporosity, combined with a 2D hexagonal mesostructure…

Soft Condensed Matter · Physics 2018-03-29 Jérémy Dhainaut , Giulia Piana , Sylvain Deville , Christian Guizard , Michaela Klotz

Aminosilanes are routinely employed for charge reversal or to create coupling layers on oxide surfaces. We present a chemical vapor deposition method to pattern mica surfaces with regions of high-quality aminosilane…

Soft Condensed Matter · Physics 2016-09-20 Christian Pick , Christopher Argento , German Drazer , Joelle Frechette

The detection and subsequent characterisation of exoplanets are intimately linked to the characteristics of their host star. Therefore, it is necessary to study the star in detail in order to understand the formation history and…

Solar and Stellar Astrophysics · Physics 2018-07-18 M. G. Soto , J. S. Jenkins

Features of thermal transport in multilayered porous silicon nanostructures are considered. Such nanostructures were fabricated by electrochemical etching of monocrystalline Si substrates by applying periodically changed current density.…

The key parameter controlling the glass transition of colloidal suspensions is $\varphi$, the fraction of the sample volume occupied by the particles. Unfortunately, changing $\varphi$ by varying an external parameter, \textit{e.g.}…

Soft Condensed Matter · Physics 2022-04-20 J. S. Behra , A. Thiriez , D. Truzzolillo , L. Ramos , L. Cipelletti

Superhydrophobic surfaces with multi-scale topographies offer exceptionally high apparent water contact angles and low contact angle hysteresis by virtue of the small liquid{\textendash}solid contact fractions they enable. Natural…

Applied Physics · Physics 2019-12-16 Soochan Chung , Kristyn Kadala , Hayden Taylor

We have studied the structure of inert layer 4He adsorbed on mesoporous silica (FSM-16), by the vapor pressure and heat capacity measurements. The heat capacity shows a Schottky-like peak due to the excitation of a part of localized solid…

Other Condensed Matter · Physics 2019-07-10 Junko Taniguchi , Kizashi Mikami , Masaru Suzuki

We have used medium-energy ion scattering (MEIS) to quantitatively analyze the structure of holmium silicide islands grown on the Si(100) surface. Structure fitting to the experimental data unambiguously shows that the tetragonal silicide…

Materials Science · Physics 2008-07-30 T. J. Wood , C. Eames , C. Bonet , M. B. Reakes , T. C. Q. Noakes , P. Bailey , S. P. Tear

Thermoelectric device is a promising next-generation energy solution owing to its capability to transform waste heat into useful electric energy, which can be realized in materials with high elec- tric conductivities and low thermal…

Materials Science · Physics 2018-07-10 Kisung Chae , Seoung-Hun Kang , Seon-Myeong Choi , Duck Young Kim , Young-Woo Son

As-deposited and unencapsulated GeSe$_{1-x}$Te$_x$ ($x = 0, 0.25$) 3-$\mu$m-thick amorphous films on Si(001) were obtained via the co-evaporation technique to study the effect of selenium (Se) substitution for tellurium (Te) on the GeSe…

Materials Science · Physics 2025-01-22 P. Armand , R. Escalier , G. Silly , J. Lizion , A. Piarristeguy

Polycrystalline samples of Sr2Mn2CuAs2O2, Sr2Mn3As2O2, and Sr2Zn2MnAs2O2 were synthesized. Their temperature- and applied magnetic field-dependent structural, transport, thermal, and magnetic properties were characterized by means of x-ray…

Superconductivity · Physics 2010-11-12 R. Nath , V. O. Garlea , A. I. Goldman , D. C. Johnston
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