Results 41 to 50 of about 178,077 (297)

Digital holographic interferometry applied to the investigation of ignition process.

open access: yesOptics Express, 2017
We use the digital holographic interferometry (DHI) technique to display the early ignition process for a butane-air mixture flame. Because such an event occurs in a short time (few milliseconds), a fast CCD camera is used to study the event.
J. Pérez-Huerta   +4 more
semanticscholar   +1 more source

Minimal Length in Quantum Gravity, Equivalence Principle and Holographic Entropy Bound [PDF]

open access: yesClass.Quant.Grav.28:065013,2011, 2011
A possible discrepancy has been found between the results of a neutron interferometry experiment and Quantum Mechanics. This experiment suggests that the weak equivalence principle is violated at small length scales, which quantum mechanics cannot explain.
arxiv   +1 more source

3D imaging using scanning diffractometry

open access: yesScientific Reports, 2021
Imaging of cells is a challenging problem as they do not appreciably change the intensity of the illuminating light. Interferometry-based methods to do this task suffer from high sensitivity to environmental vibrations.
Morteza J. Siavashani   +6 more
doaj   +1 more source

Quantitative measurement of thermal lensing in diode-side-pumped Nd:YAG laser by use of digital holographic interferometry.

open access: yesOptics Express, 2016
Thermal lensing in diode-side-pumped Nd:YAG laser has been measured quantitatively using digital holographic interferometry. A series of holograms, carrying the information of the laser rod under different pump currents, are recorded with a CCD and ...
Jianglei Di   +5 more
semanticscholar   +1 more source

Investigating tricalcium silicate dissolution kinetics in cementitious materials through single‐particle analysis

open access: yesJournal of the American Ceramic Society, EarlyView.
Abstract The dissolution kinetics of tricalcium silicate (Ca3SiO5, or C3S), the primary component of ordinary Portland cement, are critical to cement hydration, which governs key properties, such as setting, hardening, long‐term mechanical performance, and durability.
Ziyu Chen   +6 more
wiley   +1 more source

Experimental investigation of temperature fields in a synthetic jet

open access: yesMATEC Web of Conferences, 2014
The paper deals with the measurement of temperature fields in a synthetic jet. This type of experiment presents several challenges; therefore, to ensure the best precision possible, two experimental methods were used – digital holographic interferometry (
Dančová Petra   +2 more
doaj   +1 more source

Advanced holographic nondestructive testing system for residual stress analysis [PDF]

open access: yesProceedings of SPIE 3687 (1999), pages 73-81, 2013
The design and operating of a portable holographic interferometer for residual stress analysis by creating a small scratch along with a new mathematical algorithm of calculations are discussed. Preliminary data of the stress investigations on aluminum and steel alloys have been obtained by the automatic processing of the interference pattern using a ...
arxiv   +1 more source

Photopolymer Resins from Sulfenyl Chloride Commodity Chemicals for Plastic Optics, Photopatterning and 3D‐Printing

open access: yesAdvanced Materials, Volume 37, Issue 14, April 9, 2025.
From oil refining to high refractive index photopolymers for bulk plastic optics. The synthesis of a new photopolymer resin derived from inexpensive sulfur petrochemicals is reported affording a high‐quality optical glass that is amenable to a wide range of photopolymerization‐based fabricated methods, including 3D Printing, for precision plastic ...
Chisom Olikagu   +20 more
wiley   +1 more source

Polarization‐Controlled Diffractions of Submicron Pillar Arrays of Azo Molecular Glass for Image Recording and Reconstruction

open access: yesAdvanced Photonics Research, Volume 6, Issue 3, March 2025.
Submicron pillar array of an azo molecular glass (IA‐Chol) is used as media for polarization recording, which is achieved through directional pillar deformations induced by the illumination. The pillar arrays generate different diffracted waves upon the polarizations of the incident beams used for recording and image reconstruction.
Zenan Wang, Chungen Hsu, Xiaogong Wang
wiley   +1 more source

Holographic and Video Techniques Applied to Engineering Measurement

open access: yesMeasurement + Control, 1971
In a brief period, lasers have developed from curiosities of the physics laboratory to tools suited to incorporation in complex instrumentation systems.
J N Butters, J A Leendertz
doaj   +1 more source

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