Results 51 to 60 of about 29,048 (184)

Hidden area and mechanical nonlinearities in freestanding graphene [PDF]

, 2017
We investigated the effect of out-of-plane crumpling on the mechanical response of graphene membranes. In our experiments, stress was applied to graphene membranes using pressurized gas while the strain state was monitored through two complementary ...
Bolotin, Kirill I., Lavrik, Nickolay V., Nicholl, Ryan J. T., Srijanto, Bernadeta R., Vlassiouk, Ivan   +4 more
core   +2 more sources

Adaptive Threshold Algorithm for Outlier Elimination in 3D Topography Data of Metal Additive Manufactured Surfaces Obtained from Focus Variation Microscopy

Photonics
The topography of surfaces produced by metal additive manufacturing is a challenge for optical measurement systems such as focus variation microscopes.
Xin Xu, Tobias Pahl, Sebastian Hagemeier, Peter Lehmann   +3 more
doaj   +1 more source

Toothpaste Abrasion and Abrasive Particle Content: Correlating High-Resolution Profilometric Analysis with Relative Dentin Abrasivity (RDA)

Dentistry Journal, 2023
In this in vitro study, the influence of the concentration of abrasive particles on the abrasivity of toothpastes was investigated using laser scan profilometry on polymethyl methacrylate (PMMA) surfaces with the aim of providing an alternative method to
Joachim Enax, Frederic Meyer, Erik Schulze zur Wiesche, Ines Christin Fuhrmann, Helge-Otto Fabritius   +4 more
doaj   +1 more source

Simulating and Verifying a 2D/3D Laser Line Sensor Measurement Algorithm on CAD Models and Real Objects

Sensors
The increasing adoption of 2D/3D laser line sensors in industrial and research applications necessitates accurate and efficient simulation tools for tasks such as surface inspection, dimensional verification, and quality control.
Rok Belšak, Janez Gotlih, Timi Karner
doaj   +1 more source

Elemental, Morphological, and Corrosion Characterization of Different Surface States of Co-Cr Alloy for Prosthodontic Applications

International Journal of Electrochemical Science, 2016
In this study, four different groups were prepared in a cast model of an arch that received four implants made with a Co-Cr dental alloy. The surface of each group was prepared by four different surface treatments, including sandblasting with Al2O3 ...
Youssef S. Al Jabbari, Argiro Ntasi, Mariana Gaintatzopoulou, Wolf Dieter Mueller, George Eliades, El-Sayed M. Sherij, Spiros Zinelis   +6 more
doaj   +1 more source

Laser Profilometry on Micro-PTC

Energies, 2022
Profilometry is useful in detecting surface faults on solar concentrators, which can be imperfectly manufactured, thus affecting system performance. Profilometric analyses are performed on a micro-parabolic trough collector (m-PTC), with reduced sizes ...
Gianluca Marotta, Daniela Fontani, Franco Francini, David Jafrancesco, Maurizio De Lucia, Paola Sansoni   +5 more
doaj   +1 more source

Influence of laser spot size at diffuser plane on the longitudinal spatial coherence function of optical coherence microscopy system

, 2019
Coherence properties and wavelength of light sources are indispensable for optical coherence microscopy/tomography as they greatly influence the signal to noise ratio, axial resolution, and penetration depth of the system.
Ahmad, Azeem, Butola, Ankit, Dubey, Vishesh, Joshi, Rakesh, Mehta, Dalip Singh, Usmani, Kashif   +5 more
core   +1 more source

High precision dynamic multi-interface profilometry with optical coherence tomography [PDF]

, 2011
Optical coherence tomography (OCT) has mostly been used for high speed volume imaging but its profilometry potentials have not been fully exploited. This paper demonstrates high precision (as good as ~50nm) multi-interface profilometry using a Fourier ...
Amaral, Berns, Delaney, Dresel, Elias, Endo, Fercher, Fercher, Gao, Huang, Lawman, Lee, Liang, Liang, Ortiz, Ortiz, Podoleanu, Prykäri, Renlon, Stifter, Stillwagon, Targowski, Tearney, Tomlins, Tomlins, Wang   +25 more
core   +1 more source

Structured Light Profilometry on m-PTC

Energies, 2020
In concentrating solar systems, it is essential to study the optical losses of the collectors. A fundamental parameter is the intercept factor, namely, the fraction of sunrays reflected by the concentrator that reaches the receiver.
Gianluca Marotta, Paola Sansoni, Franco Francini, David Jafrancesco, Maurizio De Lucia, Daniela Fontani   +5 more
doaj   +1 more source

One shot profilometry using iterative two-step temporal phase-unwrapping

, 2016
This paper reviews two techniques that have been recently published for 3D profilometry and proposes one shot profilometry using iterative two-step temporal phase-unwrapping by combining the composite fringe projection and the iterative two-step temporal
Du, Guangliang, Lei, Zhenkun, Li, Hui, Li, Yanjie, Si, Shuchun, Wang, Minmin, Zhou, Canlin   +6 more
core   +1 more source