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We consider depletion effects of a pear-shaped colloidal particle in a hard-sphere solvent, for two different model realisations of the pear-shaped colloidal particle. The two models are the pear hard Gaussian overlap (PHGO) particles and…

Hypothesis: Introducing charged terminal groups to polymers that graft nanoparticles enables Coulombic control over their assembly by tuning the pH and salinity of aqueous suspensions. Experiments: Gold nanoparticles (AuNPs) are grafted…

Mesoscale and Nanoscale Physics · Physics 2023-12-08 Hyeong Jin Kim , Binay P. Nayak , Honghu Zhang , Benjamin M. Ocko , Alex Travesset , David Vaknin , Surya K. Mallapragada , Wenjie Wang

We report the synthesis of a graphene-sulfur composite material by wrapping polyethyleneglycol (PEG) coated submicron sulfur particles with mildly oxidized graphene oxide sheets decorated by carbon black nanoparticles. The PEG and graphene…

Two-dimensional election gases (2DEG), arising due to quantum confinement at interfaces between transparent conducting oxides, have received tremendous attention in view of electronic applications. The challenge is to find a material system…

Materials Science · Physics 2022-01-24 Wahib Aggoune , Claudia Draxl

A bimetallic Au-Pd catalyst supported on ceriazirconia with Au:Pd molar ratio 0.8 has been synthesized using a simultaneous deposition-precipitation method and oxidized at 250, 450, and 700 $^\circ$C in order to modify its particle size,…

We report observations of a remarkable scaling behavior with respect to concentration in the passive microbead rheology of two highly entangled polymeric solutions, polyethylene oxide (PEO) and hyaluronic acid (HA). This behavior was…

Soft Condensed Matter · Physics 2018-10-17 Ian Seim , Jeremy A. Cribb , Jay M. Newby , Paula Vasquez , Martin Lysy , M. Gregory Forest , David B. Hill

Sm-doped BiFeO3 compacted powders with composition across the morphotropic phase boundary region were prepared by sol-gel method. Crystal structure, morphology and magnetic state of the compounds were analyzed as a function of dopant…

Functional polymers, such as poly(ethylene glycol) (PEG) terminated with a single phosphonic acid, hereafter PEGik-Ph are often applied to coat metal oxide surfaces during post synthesis steps, but are not sufficient to stabilize sub-10 nm…

Metal-organic molecular adsorbates on metallic surfaces offer the potential to both generate materials for future (spin-)electronics applications as well as a better fundamental understanding of molecule-substrate interaction, provided that…

Materials Science · Physics 2024-09-17 A. Eschenlohr , R. Shi , J. Chen , P. Zhou , U. Bovensiepen , W. Hübner , G. Lefkidis

Redox and catalytic performance in total methane oxidation of a nonostructured ceria-terbia catalyst supported on magnesia is presented and compared to that of a pure ceria catalyst supported on MgO. The investigated material, Ce0.5Tb0.5Ox…

Structures of metal nanoparticles (NPs) significantly influence their catalytic reactivities. Recent in situ experimental observations of dramatic structural changes in NPs have underscored the need to establish a dynamic structure-property…

Materials Science · Physics 2024-07-02 Lei Ying , Beien Zhu , Yi Gao

The effects of pressure on the crystal structure of the three known polymorphs of magnesium sulfate have been theoretically study by means of DFT calculations up to 45 GPa. We determined that at ambient conditions gamma MgSO4 is an unstable…

Materials Science · Physics 2017-05-31 A. Benmakhlouf , D. Errandonea , M. Bouchenafa , S. Maabed , A. Bouhemadou , A. Bentabet

The large - scale commercialization of promising lithium - sulfur (Li - S) batteries remains limited by the polysulfide shuttle effect, which causes rapid capacity fading and poor cycle life. In this study, we present a scalable strategy to…

The conductivity and stability of specially treated PEDOT:PSS thin films are investigated. Based on the proposed treatment method, ITO-free PTB7:PC71BM organic solar cells are fabricated and the electrical properties of the cells are…

Applied Physics · Physics 2021-06-15 Mehrdad Kankanan , Abdolnabi Kosarian , Ebrahim Farshidi

Metalated phthalocyanines (Pc's) are robust and versatile molecular complexes, whose properties can be tuned by changing their functional groups and central metal atom. The electronic structure of magnesium Pc (MgPc) - structurally and…

Open-porous scaffolds of WE43 Mg alloy with a body-center cubic cell pattern were manufactured by laser powder bed fusion with different strut diameters. The geometry of the unit cells was adequately reproduced during additive manufacturing…

Materials Science · Physics 2020-10-29 M. Li , F. Benn , T. Derra , N. Kroeger , M. Zinser , R. Smeets , J. M. Molina-Aldareguía , A. Kopp , J. LLorca

Zeolites, as representative porous materials, possess intricate three-dimensional frameworks that endow them with high surface areas and remarkable catalytic properties. There are a few factors that give a huge influence on the catalytic…

Materials Science · Physics 2025-04-25 Enci Zhang , Zhuoya Dong , Xubin Han , Jianhua Zhang , Yanhang Ma , Huaidong Jiang

Mechanical degradation of dilute solutions of polyethylene oxide (PEO) via chain scission was investigated within a turbulent pipe flow. Comparisons of the drag reduction performance with and without degradation were made by matching the…

Fluid Dynamics · Physics 2020-05-11 Yasaman Farsiani , Zeeshan Saeed , Brian R. Elbing

In this work a simple approach to transform MoS$_2$ from its metallic (1T' to semiconductor 2H) character via gold nanoparticle surface decoration of a MoS$_2$ graphene oxide (rGO) nanocomposite is proposed. The possible mechanism to this…

This work presents a simply methodology for coating small unilamellar liposomes bearing different degrees of positive charge with polyelectrolyte multilayers using the sequential Layer-by-Layer (LbL) deposition method. The liposomes were…

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