Results 1 to 10 of about 19,754 (274)

Fabrication of Conductive Patterns by Selective Laser Sintering of Silver Nanoparticles-Photopolymer Ink [PDF]

open access: yes한국정밀공학회지, 2021
Recent developments in additive manufacturing (AM) process have led us to fabricate many mechanical and electrical components or devices into complex geometries. Within existing AM processes, laser is widely used as an energy source to selectively sinter
Gil-Yong Lee, Geo-Sung Lee
doaj   +1 more source

Optimizing the Neural Network Architecture for Automation of the Tailored UV Post-Treatment of Photopolymer Printing Plates

open access: yesMachines, 2023
In this work, three types of photopolymer printing plates for packaging printing were subjected to varied UV (ultraviolet radiation) post-treatments, and their surface free energy (SFE) components were calculated.
Davor Donevski   +2 more
doaj   +1 more source

Study of Full-Color Multiplexed Transmission Holograms of Diffusing Objects Recorded in Photopolymer Bayfol HX

open access: yesPhotonics, 2021
A wavelength multiplexing procedure for color transmission volume holograms of diffusing objects recorded in Bayfol® HX200 photopolymer is proposed. For the recording, three lasers of 442 nm, 532 nm and 633 nm, and a Spectralon® diffusing object were ...
Marina Sevilla   +4 more
doaj   +1 more source

Surface topology modification of organic substrates using material jetting technologies

open access: yesMaterials & Design, 2020
The ability to directly modify the topology of a surface with three-dimensional micron-scale features provides both a mechanism of controlling how it interacts with the surrounding environment and the potential to impart functional features. Using direct
Tiffany Chen   +2 more
doaj   +1 more source

Development and Testing of a Dual-Wavelength Sensitive Photopolymer Layer for Applications in Stacking of HOE Lenses

open access: yesApplied Sciences, 2021
Diffractive optical elements (DOEs) have been in development for many years and are an exciting technology with the capability to re-direct light, using diffraction rather than refraction.
Sanjay Keshri   +5 more
doaj   +1 more source

Wide-Band High Concentration-Ratio Volume-Holographic Grating for Solar Concentration

open access: yesSensors, 2020
Efficient and low-cost solar-energy collection has become the focus of many research works. This paper proposes a recording method and an experimental verification of a wide-band, large-angle, and high concentration-ratio volume-holographic grating for ...
Chengchen Wang   +4 more
doaj   +1 more source

Thermal Fringe Formation during a Hologram Recording Using a Dry Photopolymer

open access: yesPhotonics, 2021
In this study we investigated the undesired but possible fringe formation during the recording of large size holographic optical elements (HOE) using a dry photopolymer.
Friedrich-Karl Bruder   +2 more
doaj   +1 more source

Nonlinear optical properties of photoresists for projection lithography [PDF]

open access: yes, 1996
Optical beams are self-focused and self-trapped upon initiating crosslinking in photoresists. This nonlinear optical phenomenon is apparent only for low average optical intensities and produces index of refraction changes as large as 0.04.
Kewitsch, Anthony S., Yariv, Amnon
core   +1 more source

Whisker Alignment in Microparts Using Laser Stereolithography with Applied Electric Field

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2013
The purpose of this research is to produce microparts reinforced with unidirectional whiskers using laser stereolithography. Electrically conductive whiskers are added to a liquid photopolymer and an electric field is applied to the liquid photopolymer ...
Takeshi NAKAMOTO   +2 more
doaj   +1 more source

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