Results 51 to 60 of about 19,319 (193)

Development of low cost packaged fibre optic sensors for use in reinforced concrete structures [PDF]

open access: yes, 2019
There is an ongoing need to measure strains in reinforced concrete structures more reliably and under a range of circumstances e.g. long term durability (such as effects of cracking and reinforcement corrosion), response to normal working loads and ...
Banerji, P.   +6 more
core   +1 more source

Comparison of peristrophic multiplexing and a combination of angular and peristrophic holographic multiplexing in a thick PVA/acrylamide photopolymer for data storage [PDF]

open access: yes, 2007
Two different types of multiplexing are used to store 90 holograms at the same location in a polyvinyl alcoholacrylamide photopolymer material. In the first, the 90 holograms are stored using only peristrophic multiplexing, whereas in the second a ...
Fernandez-Varo, Helena   +5 more
core   +2 more sources

Isolation and structure of fullerene photodimer, C-120 [PDF]

open access: yes, 2001
Photopolymerization of C60 was performed on a gram scale via a new monomer transport method. After subsequent extractions of the raw polymer in organic solvents, lOOmg dimer and lOmg mixture of soluble oligomers were yielded.
Kamarás, Katalin   +4 more
core   +1 more source

The Diffraction Efficiency of Acrylate-Based Holographically Photopolymerized Gratings Enhanced by the Dark Reaction

open access: yesPhotonics
Photopolymers, especially acrylate-based ones with low cost and simple preparation, are promising materials for high-efficiency holographic gratings. However, it is still challenging to achieve high-performance gratings, due to the influences of many ...
Ziyan Bai   +9 more
doaj   +1 more source

Digital Light Processing 3D Printing of Gyroid Scaffold with Isosorbide-Based Photopolymer for Bone Tissue Engineering

open access: yesBiomolecules, 2022
As one of the most transplanted tissues of the human body, bone has varying architectures, depending on its anatomical location. Therefore, bone defects ideally require bone substitutes with a similar structure and adequate strength comparable to native ...
Fiona Verisqa   +4 more
doaj   +1 more source

Dexamethasone release from photopolymerised PEGDA700 for cochlea drug delivery

open access: yesCurrent Directions in Biomedical Engineering, 2020
Sustained local drug release and high local drug concentrations can be achieved by specially designed DDSs, which can be created for different applications.
Thomas Eickner   +5 more
doaj   +1 more source

Process Planning to Build Mask Projection Stereolithography Parts with Accurate Vertical Dimensions [PDF]

open access: yes, 2007
Mask Projection Stereolithography (MPSLA) is a high resolution manufacturing process that builds parts layer by layer in a photopolymer. In this paper, we formulate a process planning method to cure MPSLA parts with accurate vertical dimensions.
Limaye, Ameya, Rosen, David
core   +1 more source

Characterization of the holographic photopolymer Bayfol HX in the IR region

open access: yesНаучно-технический вестник информационных технологий, механики и оптики
The possibility of creating holographic optical elements operating in the near infrared spectral range based on the Bayfol HX holographic photopolymer has been considered.
V. N. Borisov   +5 more
doaj   +1 more source

Photobase Generator Enabled Pitch Division: A Progress Report [PDF]

open access: yes, 2011
Pitch division lithography (PDL) with a photobase generator (PBG) allows printing of grating images with twice the pitch of a mask. The proof-of-concept has been published in the previous paper[1, 2] and demonstrated by others[1].
Blackwell, J.   +15 more
core   +1 more source

Process Errors and Aspects for Higher Resolution in Conventional Stereolithography [PDF]

open access: yes, 2004
Due to the rapid development of precision manufacturing technologies, there is a growing market need for appropriate rapid prototyping methods with higher resolution.
Tille, Carsten
core   +1 more source

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