Results 71 to 80 of about 45,339 (261)

COFs on MOFs: Layer‐by‐Layer Synthesis of MOF@COF Nanoparticles with Synergistic Adsorption

Advanced Materials, EarlyView.
A layer‐by‐layer strategy enables the growth of crystalline covalent organic framework (COF) shells on metal–organic framework nanoparticles, creating core–shell structures with tunable porosity. Ordered interstitial mesopores are formed during shell growth, which are connected with the COF's intrinsic micropores, thereby enhancing water sorption. This
Ana Guillem‐Navajas, Lucía Torrico‐García‐Viso, Jose Antonio Suárez del Pino, Nekane Aramburu‐Merino, Pilar Segovia, Enrique G. Michel, Josep Puigmartí‐Luis, Enrique Velasco, Pedro Tarazona, Daniel Maspoch, David Rodríguez‐San‐Miguel, Félix Zamora   +11 more
wiley   +1 more source

Influence of Lubricant Properties on Elastohydrodynamic Oil Film Thickness in Angular Contact Ball Bearings: A Numerical Investigation

Applied Mechanics
Predicting oil film thickness at ball–raceway contacts under elastohydrodynamic lubrication (EHL) conditions remains a complex tribological challenge. This complexity arises from dynamic variations in contact load, rotational speed, hydrodynamic effects,
Hikmet Bal
doaj   +1 more source

Experimental Investigation of the Minimum Oil-Film Thickness in Spur Gears

, 1963
As a pair of gears is loaded, the minimum oil-film thickness between the gear teeth decreases and can approach a magnitude equal to the magnitude of the surface roughness.
E. I. Radzimovsky, D. W. Dareing
core   +1 more source

The Measurement of Liner - Piston Skirt Oil Film Thickness by an Ultrasonic Means [PDF]

, 2006
The paper presents a novel method for the measurement of lubricant film thickness in the piston-liner contact. Direct measurement of the film in this conjunction has always posed a problem, particularly under fired conditions.
S. Howell-Smith, Rahnejat, Homer, Harper, P, H. Rahnejat, R.S. Dwyer-Joyce (7208828), Dwyer-Joyce, RS, R. S. Dwyer-Joyce, D. A. Green, Green, DA, Homer Rahnejat (1247550), R. Lewis (2956521), Lewis, R, S. Balakrishnan, P. Harper, P. Harper (7215023), D.A. Green (7215020), Paul King (1247412), Sashi Balakrishnan (7200980), King, P, P. D. King, S.J. Howell-Smith (7201925), R. Lewis, Balakrishnan, S, Howell-Smith, SJ   +23 more
core   +1 more source

One‐Dimensional Materials Supported in Two‐Dimensional Van der Waals Metal–Organic Frameworks with Optical Anisotropy Switching via Twist‐Engineering

Advanced Materials, EarlyView.
We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti, Carla Boix‐Constant, Iván Gómez‐Muñoz, Diego López‐Alcalá, Sergio Revuelta, Marco Ballabio, Vasileios Balos, José J. Baldoví, Enrique Cánovas, Josep Canet‐Ferrer, Guillermo Mínguez Espallargas, Samuel Mañas‐Valero, Eugenio Coronado   +12 more
wiley   +1 more source

Effect of the Sliding Element Surface Topography on the Oil Film Thickness in EHD Lubrication in Non-Conformal Contact. [PDF]

Materials (Basel), 2022
Galda L, Sep J, Swirad S.
europepmc   +1 more source

Simulated in situ retorting of oil shale in a controlled-state retort. III. Dynamic oil film thickness on partially retorted and unretorted shale [PDF]

, 1982
The amount of oil washed from the partially retorted and unretorted shales from 14 interrupted runs of the controlled-state retort has been used to estimate dynamic oil film thickness on those shales.
Duvall, J. J.
core   +1 more source

Combined Retrieval of Oil Film Thickness Using Hyperspectral and Thermal Infrared Remote Sensing

, 2023
An outdoor experiment was conducted to measure the thickness of oil films (0~3000 μm) using an airborne hyperspectral imager and thermal infrared imager, and the spectral response and thermal response of oil films of different thicknesses were analyzed ...
Zhongwei Li, Meiqi Wang, Yi Ma, Yabin Hu, Ning Zhang, Jie Zhang, Junfang Yang   +6 more
core   +1 more source

Chiral Microneedle Arrays With Terahertz Chiroptical Activity With Chiral‐Plasmon‐Chiral‐Phonon Resonance

Advanced Materials, EarlyView.
ABSTRACT Microneedle arrays (MNAs) is a rapidly emerging technology with broad biomedical applications in drug delivery and biosensing. With sub‐millimeter dimensions and periodicity, MNAs possess geometries nearly ideal for biomedical devices operating within the terahertz (THz) spectral window.
Sang Hyun Lee, Hong Ju Jung, John Kim, Bum Chul Park, Caio V. C. R. da Silva, André F. de Moura, Nicholas A. Kotov   +6 more
wiley   +1 more source

Measurement of Mist to Annular Flow Development in the Discharge of a Compressor

, 2012
Compressors produce a flow of oil droplets propelled by refrigerant flow while fully developed flow maps predict predominantly annular flow. This discrepancy is rooted in the lack of understanding of flow development.
Wujek, Scott S., Hrnjak, Predrag S.
core