Inkjet Printing of Functional Materials for Optical and Photonic Applications

Alamán, Jorge; Alicante, Raquel; Peña, José; Sánchez‐Somolinos, Carlos

doi:10.3390/ma9110910

Cited by 137 publications

(98 citation statements)

References 265 publications

(334 reference statements)

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“…Printing methods have traditionally been utilised to mass produce items and images-at a low cost and with a large throughput. Both traditional and modern processes, including screen, gravure and inkjet printing, have been exploited and re-purposed across a broad number of fields, such as the production of flexible electronics [1], biosensors [2] and optical lenses [3]. Therefore, research into alternative print processes can be seen, not only as a route for obtaining a high-quality reproduction of an image, but also as a broader fabrication technique.…”

Section: Introductionmentioning

confidence: 99%

The optical properties of the Woodburytype—an alternative printing technique based on a gelatine/pigment matrix

2020

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The Woodburytype is a 19th century photomechanical printing method, producing high-quality continuous-tone images that use a suspension of carbon black in gelatine as a relief print, in which the variation in height of the print produces the grayscale and contrast. We propose a phenomenological optical model for the process based on Kubelka-Munk theory that considers the ink formulation, the print height and the substrate surface in order to provide the ideal combination of printing depth and contrast.

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Section: Introductionmentioning

confidence: 99%

The optical properties of the Woodburytype—an alternative printing technique based on a gelatine/pigment matrix

2020

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“…Additive manufacturing techniques, such as two‐photon lithography and 3D printing, are becoming more and more relevant in biotechnology, giving the possibility to produce complex 3D structures on different length‐scales and becoming amenable to many different materials . It has been shown that LC materials can be utilized with these techniques with the characteristic molecular order remaining preserved during the photo‐crosslinking process, or even induced and patterned due to shear forces in the 3D printing process . Van Oosten et al achieved the construction of bioinspired artificial cilia for mixing applications and microfluidic pumping (Figure d) .…”

Section: Polymeric Photoactuators: Moving Toward Artificial Musclesmentioning

confidence: 99%

Photoreversible Soft Azo Dye Materials: Toward Optical Control of Bio‐Interfaces

Chang

Fedele

Priimägi

et al. 2019

Advanced Optical Materials

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systems interact with artificial materials, researchers have now assembled a versatile toolkit of materials and processes that allows one to fine-tune interactions at the interface, tailoring specific biological responses on demand. These strategies for biocontrol can be broadly categorized as chemical (charge, ligand presence, surface groups), material changes (moisture content, stiffness), or morphological changes (molecular orientation, surface topography, or mechanical actuation). Rational design of materials for biological interface applications has a unique set of challenges due to the unique requirements of a wide range of biological systems, since different tissues present specific compositions, with their own elasticity, structural organization, and triggering mechanisms. Even within a single organ or tissue, mechanical properties can vary widely depending on the region. A recent study of viscoelasticity in live mouse brain tissue for example found a tenfold difference within the brain depending on the region and morphological structure studied. [2] However, most biological tissues are far less stiff, and far more viscoelastic than typical artificial materials employed at their interface, especially early artificial cell culture materials, which can be much stiffer than in vivo extracellular matrix by many orders of magnitude. [3] In vivo, cells interface with a surrounding microenvironment consisting of an intricate macromolecular network of proteins and sugars swollen in an aqueous media gel. Therefore, the interaction between cells and the extracellular matrix (ECM) in the body is complex and involves a variety of cues related to topography, chemical markers, protein composition, solubility factors, and mechanical properties such as stiffness and elasticity (Figure 1a). [4] Yet much research over the past decades was focused on studying in vitro the effects of each of these signals on cell behavior, with a particular interest on the chemical factors, whereas only recently more advanced biomaterials with controlled physicomechanical properties have been developed, such as those with tunable and variable stiffness, alignment and orientation of key functional groups, and mechanical actuation. There is a large range of stiffness in human tissue, where bone (≈100 GPa) is nine orders of magnitude harder than brain tissue (≈0.1 kPa). [4] Therefore, biomaterial researchers assume a complex task of providing materials and processing technologies for controlling stiffness and micro-and nanostructures in Photoreversible optically switchable azo dye molecules in polymer-based materials can be harnessed to control a wide range of physical, chemical, and mechanical material properties in response to light, that can be exploited for optical control over the bio-interface. As a stimulus for reversibly influencing adjacent biological cells or tissue, light is an ideal triggering mechanism, since it can be highly localized (in time and space) for precise and dynamic control over a biosystem, and low-power visible light...

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“…Even though the lifetime of organic dyes under strong optical excitation is limited due to photobleaching [18][19][20], their use in low cost sensing applications and single-use devices might be favorable compared to more expensive semiconductor devices. The possibility to locally deposit the dye-doped polymer material on the substrate via ink-jet printing can decrease fabrication costs even further and adds additional design flexibility [21,22]. Compatibility to CMOS fabrication processes enables the co-integration of organic polymer based technology with microelectronics.…”

Section: Introductionmentioning

confidence: 99%

Material gain concentration quenching in organic dye-doped polymer thin films

Vogelbacher¹,

Zhou²,

Huang³

et al. 2019

Opt. Mater. Express

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The optimization of material gain in optically pumped dye-doped polymer thin films is an important task in the development of organic solid-state lasers. In this work, we present a theoretical model that accommodates the influence of concentration quenching on material gain and employ it to study the novel dye molecule 2-(4-(bis(4-(tert-butyl)phenyl)amino)benzylidene)malononitrile (PMN) and the well-established dye molecule 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM) embedded in poly(methyl methacrylate) (PMMA). Polycarbonate was tested as an alternative host material for PMN. The material gain in these dyedoped polymer thin films was determined by the variable stripe length method. The inclusion of concentration quenching in the material gain expression is able to significantly reduce the overestimation of the gain efficiency inherent to a linear model.

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Inkjet Printing of Functional Materials for Optical and Photonic Applications

Cited by 137 publications

References 265 publications

The optical properties of the Woodburytype—an alternative printing technique based on a gelatine/pigment matrix

The optical properties of the Woodburytype—an alternative printing technique based on a gelatine/pigment matrix

Photoreversible Soft Azo Dye Materials: Toward Optical Control of Bio‐Interfaces

Material gain concentration quenching in organic dye-doped polymer thin films

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