A liquid crystal lens array with a hexagonal arrangement is investigated experimentally. The uniqueness of this study exists in the fact that using convex-ring electrode provides a smooth and controllable applied potential profile across the aperture to manage the phase profile. We observed considerable differences between flat electrode and convex-ring electrode; in particular the lens focal length is variable in a wider range from 2.5cm to infinity. This study presents several noteworthy characteristics such as low driving voltage; 30 μm cell gap and the lens is electrically switchable between 2D/3D modes. We demonstrate a hexagonal LC-lens array for capturing 3D images by using single sensor using integral imaging.
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http://dx.doi.org/10.1364/OE.23.000971 | DOI Listing |
ACS Appl Mater Interfaces
January 2025
Department of Inorganic Polymers, "Petru Poni" Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41A, 700487 Iasi, Romania.
The locomotion of various organisms relies on the alternated elongation-contraction of their muscles or bodies. Such biomimicry can offer a promising approach to developing soft robotic devices with improved mobility and efficiency. Most strategies to mimic such motions rely on reversible size modifications of some materials upon exposure to external stimuli.
View Article and Find Full Text PDFACS Omega
December 2024
College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, People's Republic of China.
With the gradual application of enhanced oil recovery by CO (CO-EOR), the rheological behavior of produced fluid is altered due to CO dissolution and degassing. This work focuses on the composition, physical properties, gelation and yield characteristics, and viscosity-temperature properties of crude oil containing paraffinic wax after CO treatment. Special attention is given to the effect of the phase state of CO.
View Article and Find Full Text PDFHeliyon
January 2025
Division of Oral and Maxillofacial Surgery, Faculty of Dentistry, Thammasat University, Pathum Thani, 12120, Thailand.
Objectives: To evaluate the accuracy (trueness and precision) of liquid crystal display (LCD)-printed orthognathic surgical splints under two different post-processing conditions-rinsing solvent and post-polymerization time.
Materials And Methods: An LCD 3D printer was used to create 48 surgical splints using the same reference standard tessellation language (STL) files. They were randomly assigned to two experimental studies.
Heliyon
January 2025
Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran.
Lattice structures are an innovative solution to increase the strength-to-weight ratio of a structure. In this study, two polymeric hybrid lattice structures-"FRB" (a heterogenous structure which is indeed a BCC structure reinforced by FCC unit cells dispersed in a way to form a chessboard pattern in each layer) and the "Multifunctional" (a homogenous structure whose unit cells are a combination of FCC and BCC unit cells where their central nodes are connected)-are proposed, fabricated via liquid crystal display 3D printing technique, and their mechanical characteristics are evaluated under quasi-static loading, experimentally and numerically. The results indicate a 15.
View Article and Find Full Text PDFSmall
January 2025
Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Wendlingweg 2, 52074, Aachen, Germany.
Understanding and controlling the morphology of microgels is crucial for optimizing their properties and functions in diverse areas of application. The fabrication of microgels that exhibit both structural and chemical anisotropy using a template-free approach faces significant challenges. Existing approaches toward such microgels are typically limited to templating methods with low throughput.
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