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Cement is the most widely used manufacturing material in the world and improving its toughness would allow for the design of slender infrastructure, requiring less material. To this end, we investigate by means of molecular dynamics…

材料科学 · 物理学 2015-06-23 M. Bauchy , H. Laubie , M. J. Abdolhosseini Qomi , C. G. Hoover , F. -J. Ulm , R. J. -M. Pellenq

The relationship between humidity and water content in a hydrating cement paste is largely controlled by the nanostructure of the C-S-H gel. Current hydration models do not describe this nanostructure, thus sorption isotherms and…

软凝聚态物质 · 物理学 2018-03-28 Enrico Masoero , Gianluca Cusatis , Giovanni Di Luzio

The early stiffening of fresh cement paste plays a key role in shaping and stability during casting and 3D printing. In Portland cement systems, this phenomenon arises from the formation of calcium-silicate-hydrate (C-S-H), which stiffens…

软凝聚态物质 · 物理学 2025-07-21 Luca Michel , Antoine Sanner , Franco Zunino , Robert J. Flatt , David S. Kammer

Understanding the physical origin of creep in calcium--silicate--hydrate (C--S--H) is of primary importance, both for fundamental and practical interest. Here, we present a new method, based on molecular dynamics simulation, allowing us to…

材料科学 · 物理学 2015-06-23 Mathieu Bauchy , Enrico Masoero , Franz-Joseph Ulm , Roland Pellenq

From soft polymeric gels to hardened cement paste, amorphous solids under constant load exhibit a pronounced time-dependent deformation called creep. The microscopic mechanism of such a phenomenon is poorly understood in amorphous materials…

The present work investigates the morphological, micro-structural, compositional and fractal analysis for CsI thin films in case of "as-deposited" and "1 hour humid air aged". The variation of grain sizes obtained from transmission electron…

仪器与探测器 · 物理学 2018-12-05 Nabeel Jammal , R. P. Yadav , Triloki , R. Rai , A. K. Mittal , B. K. Singh

Early detection of fertilizer-induced stress in tomato plants is crucial for optimizing crop yield through timely management interventions. While conventional optical methods struggle to detect fertilizer stress in young leaves, these…

计算机视觉与模式识别 · 计算机科学 2024-11-22 Sho Ueda , Xujun Ye

Celitement is a new type of cement that is based on hydraulic calcium-hydrosilicate (hCHS) that possesses a potential for minimizing the ratio C/S from above 3 in OPC down to 1, which significantly reduces the amount of CO$_2$ released…

材料科学 · 物理学 2022-09-22 P. Stemmermann , K. Garbev , B. Gasharova , G. Beuchle , M. Haist , T. Divoux

We set up an original apparatus to measure the grain grain friction stress inside a granular medium composed of sodo-silicate-glass beads surrounded by a water vapor atmosphere.We analyze here the influence of the physico chemistry of water…

软凝聚态物质 · 物理学 2008-10-06 O. Pozo , B. Soulestin , N. Fraysse , N. Olivi-Tran

Semiconductor nanocrystals are a promising class of materials for a variety of novel optoelectronic devices, since many of their properties, such as the electronic gap and conductivity, can be controlled. Much of this control is achieved…

化学物理 · 物理学 2017-06-06 Nadav Geva , James J. Shepherd , Lea Nienhaus , Moungi G. Bawendi , Troy Van Voorhis

We report surface hardening or crust formation, unlike caking, during drying when a confined porous medium was heated from above using IR radiation. These crusts have higher strength than their closest counterparts such as sandcastles and…

软凝聚态物质 · 物理学 2020-09-04 Navneet Kumar , Jaywant H Arakeri , M S Bobji

A method of modifying the roughness of soda-lime glass spheres is presented, with the purpose of tuning inter-particle friction. The effect of chemical etching on the surface topography and the bulk frictional properties of grains is…

A simple, non-invasive method using Raman spectroscopy for the estimation of the thickness of graphene layers grown epitaxially on silicon carbide (SiC) is presented, enabling simultaneous determination of thickness, grain size and disorder…

The rice grain quality can be determined from its size and chalkiness. The traditional approach to measure the rice grain size involves manual inspection, which is inefficient and leads to inconsistent results. To address this issue, an…

图像与视频处理 · 电气工程与系统科学 2025-03-06 Ankush Tyagi , Dhruv Motwani , Vipul K. Dabhi , Harshadkumar B. Prajapati

We outline a strategy for quantitatively evaluating the conformational characteristics of self-assembled structures using the techniques of contrast variation small angle neutron scattering. By means of basis function expansion, a case…

软凝聚态物质 · 物理学 2021-10-27 Albert Y. Ho , Guan-Rong Huang , Wei-Ren Chen

In this paper, a recently developed snapshot hyperspectral imaging (HSI) system based on Computed Tomography Imaging Spectroscopy (CTIS) is utilized to determine Brix and pH values in Sheegene 20 table grapes through Partial Least Squares…

Transmission electron microscopy (TEM) is one of the primary tools to show microstructural characterization of materials as well as film thickness. However, manual determination of film thickness from TEM images is time-consuming as well as…

计算机视觉与模式识别 · 计算机科学 2021-06-24 Youshan Zhang , Brian D. Davison , Vivien W. Talghader , Zhiyu Chen , Zhiyong Xiao , Gary J. Kunkel

The electronic properties of few-layer graphene grown on the carbon-face of silicon carbide (SiC) are found to be strongly dependent on the number of layers. The carrier mobility is larger in thicker graphene because substrate-related…

介观与纳米尺度物理 · 物理学 2015-05-30 Wenjuan Zhu , Christos Dimitrakopoulos , Marcus Freitag , Phaedon Avouris

Cement is the most used construction material. The performance of cement hydrate depends on the constituent phases, viz. alite, belite, aluminate, and ferrites present in the cement clinker, both qualitatively and quantitatively.…

计算机视觉与模式识别 · 计算机科学 2022-11-08 Mohd Zaki , Siddhant Sharma , Sunil Kumar Gurjar , Raju Goyal , Jayadeva , N. M. Anoop Krishnan

The problem of determining the porous silicon (PSi) optical constants, thickness, porosity, and surface quality using just reflectance data is board employing evolutionary algorithms. The reflectance measurements were carried out of PSi…

材料科学 · 物理学 2018-09-12 C. F. Ramirez-Gutierrez , J. D. Castaño-Yepes , M. E. Rodriguez-Garcia
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