Results 41 to 50 of about 18,946 (293)

Computer-generated Moiré profilometry

Optics Express, 2017
A new 3D measuring method based on computer-generated moiré fringes is proposed. The two AC components of the 0-degree and 90-degree phase-shifted fringe patterns on reference plane are prepared in advance. While the AC component of the single-shot deformed pattern is multiplied by the two prepared AC components, respectively, two computer-generated ...
Chengmeng, Li, Yiping, Cao, Cheng, Chen, Yingying, Wan, Guangkai, Fu, Yapin, Wang   +5 more
openaire   +2 more sources

Flash-profilometry: fullfield lensless acquisition of spectral holograms for coherence scanning profilometry

Optics Express, 2023
Flash-profilometry is a novel measurement approach based on the fullfield lensless acquisition of spectral holograms. It is based on spectral sampling of the mutual coherence function and the subsequent calculation of its propagation along the optical axis several times the depth-of-field.
Claas Falldorf, Fabian Thiemicke, André F. Müller, Mostafa Agour, Ralf B. Bergmann   +4 more
openaire   +2 more sources

An Improved Circular Fringe Fourier Transform Profilometry

, 2022
Circular fringe projection profilometry (CFPP), as a branch of carrier fringe projection profilometry, has attracted research interest in recent years. Circular fringe Fourier transform profilometry (CFFTP) has been used to measure out-of-plane objects ...
Han, Mengqi, Wang, Ye, Ye Wang, Chen, Wenjing, Qili Chen, Mengqi Han, Wenjing Chen, Chen, Qili   +7 more
core   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source

Relationship between Axial Length and Corneo-Scleral Topography: A Preliminary Study

Diagnostics, 2021
The main objective of the current study was to investigate further the relationship of the overall length of the eye with a great variety of anterior segment parameters, including scleral geometry.
Laurent Bataille, Ainhoa Molina-Martín, David P. Piñero   +2 more
doaj   +1 more source

Fiber-based high-speed fringe projection profilometry [PDF]

Phase shift profilometry has become a standard technique for recording the surface of an object using the projection of sinusoidal patterns. We present a method of projecting the patterns via a pair of single-mode optical fibers mounted within a needle ...
Johnson, Steven, Gee, Hal, Mekhail, Simon Peter, Nwachi, Faith   +3 more
core   +9 more sources

Wearable Smart Patches on Sustainable Chitosan With Reversible Microbial Growth‐Inhibitory Properties

Advanced Functional Materials, EarlyView.
ABSTRACT Chitosan, a polysaccharide upcycled from biowaste, has long promised sustainable, biocompatible, and antimicrobial films and devices, an appeal reinforced by its recent regulatory recognition, with several chitosan‐based antibacterial dressings gaining clearance through the Food and Drug Administration's 510(k) pathway.
Jacopo Nicoletti, Kubra Kocak, Andrea Michel, Enrico Cavarzerani, Ali Raza, Petr Rohzin, Nouha Loudhaief, Saimir Frroku, Nicolò Baldovin, Hazrat Bilal, Alvise Perosa, Maurizio Selva, Flavio Rizzolio, Luca Sbuelz, Sabrina Tamburini, Domenico De Fazio, Giovanni Antonio Salvatore   +16 more
wiley   +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

Full polarization optical profilometry [PDF]

Journal of the Optical Society of America A, 2012
Optical digital tomographic microscopy can be used for profilometry. The profile of the surface can be estimated from measurements of the complex diffracted far field obtained when the sample is illuminated successively under various incidences. Outside the validity domain of perturbative theories of diffraction, the profile is determined by using an ...
Arhab, Slimane, Giovannini, H., Belkebir, K., Soriano, G.   +3 more
openaire   +2 more sources

Bio‐Inspired Artificial Ionic Mechanoreceptor

Advanced Functional Materials, EarlyView.
A skin‐inspired artificial mechanoreceptor based on ionic interactions is presented for biomimetic tactile sensing. Pressure‐driven ionic redistribution within microfluidic channels generates a self‐powered electrical signal without external bias. The generated waveform exhibits mechanoreceptor‐like temporal features, including overshoot and undershoot,
Mohammad Akbari, Jeppe Don, Lasse A. N. Pedersen, John Noee, Rassoul Tabassian   +4 more
wiley   +1 more source