Results 11 to 20 of about 122,865 (312)

Bacterial Biofilm Growth on 3D-Printed Materials

open access: yesFrontiers in Microbiology, 2021
Recent advances in 3D printing have led to a rise in the use of 3D printed materials in prosthetics and external medical devices. These devices, while inexpensive, have not been adequately studied for their ability to resist biofouling and biofilm ...
Donald C. Hall   +6 more
doaj   +1 more source

Geometrical consideration for mechanical contact between rolling circle and surface roughness as an improvement to the surface profile

open access: yesJournal of Mechanical Engineering and Sciences, 2021
This paper describes measurement methods of surface profiles that improve contact-type displacement sensor outputs by focusing on the contact point between the sphere tip of the sensor and the rough surface.
Tsuyoshi Shimizu   +5 more
doaj   +1 more source

Competition Between Object Topology and Surface Features in Children’s Extension of Novel Nouns

open access: yesOpen Mind, 2023
Objects’ topological properties play a central role in object perception, superseding objects’ surface features in object representation and tracking from early in development.
Praveen Kenderla   +2 more
doaj   +1 more source

Liquids on Topologically Nanopatterned Surfaces [PDF]

open access: yesPhysical Review Letters, 2005
We report here surface x-ray scattering studies of the adsorption of simple hydrocarbon liquid films on nanostructured surfaces-silicon patterned by an array of nanocavities. Two different regimes, filling and growing, are observed for the wetting film evolution as a function of the chemical potential offset from the bulk liquid-vapor coexistence.
Gang, Oleg   +5 more
openaire   +3 more sources

The Vip3Ag4 Insecticidal Protoxin from Bacillus thuringiensis Adopts A Tetrameric Configuration That Is Maintained on Proteolysis

open access: yesToxins, 2017
The Vip3 proteins produced during vegetative growth by strains of the bacterium Bacillus thuringiensis show insecticidal activity against lepidopteran insects with a mechanism of action that may involve pore formation and apoptosis.
Leopoldo Palma   +8 more
doaj   +1 more source

Enhancing Surface Topology of Udimet®720 Superalloy through Ultrasonic Vibration-Assisted Ball Burnishing

open access: yesMetals, 2020
This contribution reports the effects of an ultrasonic-vibration assisted ball burnishing process on the topological descriptors of nickel-based alloy Udimet®720. This material is of high interest for the transportation industry, and specifically for the
Ramón Jerez-Mesa   +3 more
doaj   +1 more source

Frequency selective surface with complex topology elements

open access: yesВісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка, 2021
Relevance: The solution of specific problems in modern technology of microwave and UHF ranges, such as the implementation of reducing the radar signature of objects, spatial frequency-selective filters, reflectors requires the development and creation of
D. V. Mayboroda, S. A. Pogarsky
doaj   +1 more source

Surface Topology Specific Metasurface Holograms [PDF]

open access: yesACS Photonics, 2018
Metasurface holograms are usually realized on flat surface topologies. Here we show that flexible holographic metasurfaces can be designed to form an image when applied to arbitrary substrate shapes. We demonstrate that for nonflat surfaces the phase contribution of the substrate determines the symmetry properties of the image.
James Burch, Andrea Di Falco
openaire   +3 more sources

Topological laminations on surfaces [PDF]

open access: yesExpositiones Mathematicae, 2019
We present and prove a topological characterization of geodesic laminations on hyperbolic surfaces of finite type.
openaire   +3 more sources

Magnetoresistance from Fermi surface topology [PDF]

open access: yesPhysical Review B, 2019
13 pages, 9 ...
Zhang, Sheng Nan   +3 more
openaire   +2 more sources

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