Effect of Resin on the Property of the Fluorescent Inkjet Ink

2011 ◽  
Vol 287-290 ◽  
pp. 49-53
Author(s):  
Shao Hong Gao ◽  
Xian Fu Wei ◽  
Bei Qing Huang
Keyword(s):  
Surface Tension ◽  
Technology Development ◽  
Great Influence ◽  
Adhesive Force ◽  
Short Wave ◽  
Luminous Intensity ◽  
Digital Printing ◽  
Significant Implication ◽  
Green Fluorescent ◽  
Inkjet Digital Printing

Digital printing ink imaging is one of main technical fields in digital printing technology development, fluorescence inkjet digital printing is provided with favorable anti-falsification, which is used widely in Securities anti-counterfeiting and labels anti-counterfeiting etc[1]. Printings coated with fluorescence inkjet ink that emits fluorescence under using short-wave ultraviolet light excitation get more favorable anti-falsification. Green fluorescent inkjet ink is composed of phosphor, resin, solvent, assistant agent etc, resin is main one of green fluorescent inkjet ink, which has a significant implication for its property. In order to discuss resins to green fluorescent inkjet ink properties, five samples of fluorescent inkjet ink are prepared, and test various performance parameters of ink samples, such as luminous intensity, surface tension, adhesive force, aridity, and so on. The study result indicated that resins have a great influence on luminous intensity, surface tension, aridity of fluorescence inkjet ink samples, surface tension and viscosity of resins immediately impact surface tension and viscosity of fluorescent inkjet ink.

scholarly journals Systematically Exploring Molecular Aggregation and Its Impact on Surface Tension and Viscosity in High Concentration Solutions

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1588 ◽  
Author(s):  
Huan Wang ◽  
Han Kong ◽  
Jie Zheng ◽  
Hui Peng ◽  
Chuangui Cao ◽  
...  
Keyword(s):  
Surface Tension ◽  
Great Influence ◽  
Reactive Dyes ◽  
Side Chain ◽  
Molecular Aggregation ◽  
Dye Molecules ◽  
High Concentration ◽  
Hydrophilic Group ◽  
Aggregation Structure ◽  
Dye Solutions

The aggregation structure of dye molecules has a great influence on the properties of dye solutions, especially in high concentration. Here, the dye molecular aggregation structures were investigated systemically in aqueous solutions with high concentration using three reactive dyes (O-13, R-24:1 and R-218). O-13 showed stronger aggregation than R-24:1 and R-218. This is because of the small non-conjugate side chain and its β-linked position on the naphthalene of O-13. Compared with R-218, R-24:1 showed relatively weaker aggregation due to the good solution of R-24:1. The change of different aggregate distributions in the solutions were also investigated by splitting the absorption curves. Moreover, it is found that the surface tension of solutions can be modified by the combined effect of both aggregation and the position of the hydrophilic group, which, however, also have an effect on viscosity. This exploration will provide guidance for the study of high concentration solutions.

Research on Adaptability Evaluation Contents and Indexes for Large Power Grid Construction

2014 ◽  
Vol 986-987 ◽  
pp. 453-458
Author(s):  
Yan Wei Chen ◽  
Lian Guang Liu
Keyword(s):  
Electricity Market ◽  
Technology Development ◽  
Power Grid ◽  
Great Influence ◽  
Theory And Practice ◽  
Energy Structure ◽  
Evaluation Theory ◽  
Large Power ◽  
Evaluation Indexes ◽  
Grid Construction

With the deepening of the electricity market reform and the development of community economy, as well as the increasing of grid scale, researching and establishing the adaptability evaluation theory and method of power grid construction not only is a realistic demand, but also has great influence on improving the evaluation theory system of power grid planning. In this paper, the adaptability evaluation content for large power grid construction consists of the adaptability of the national economy, the energy structure adaptability, grid structure adaptability and the adaptability of technology development. The paper also discusses the constructing theory and practice basis of the evaluation contents, in addition, the evaluation indexes of adaptability are presented in the paper.

An integrable equation governing short waves in a long-wave model

2007 ◽  
Vol 463 (2084) ◽  
pp. 1939-1954 ◽  
Author(s):  
M Faquir ◽  
M.A Manna ◽  
A Neveu
Keyword(s):  
Surface Tension ◽  
Gordon Equation ◽  
Wave Model ◽  
Short Wave ◽  
Lax Pair ◽  
Integrable Equation ◽  
Conserved Quantities ◽  
Long Wave ◽  
Tension Term ◽  
Wave Limit

The dynamics of a nonlinear and dispersive long surface capillary-gravity wave model equation is studied analytically in its short-wave limit. We exhibit its Lax pair and some non-trivial conserved quantities. Through a change of functions, an unexpected connection between this classical surface water-wave model and the sine-Gordon (or sinh-Gordon) equation is established. Numerical and analytical studies show that in spite of integrability their solutions can develop singularities and multivaluedness in finite time. These features can be traced to the fact that the surface tension term in the energy involves second-order derivatives. It would be interesting to see in an experiment whether such singularities actually appear, for which surface tension would be specifically responsible.

Effect of pH on the Luminescent Properties of the Green Fluorescent Ink-Jet Ink

2011 ◽  
Vol 380 ◽  
pp. 107-111 ◽  
Author(s):  
Shao Hong Gao ◽  
Xian Fu Wei ◽  
Bei Qing Huang ◽  
Chun Yan Lu
Keyword(s):  
Quantum Yield ◽  
Ph Value ◽  
Luminescent Properties ◽  
Low Ph ◽  
Luminous Intensity ◽  
Ink Jet ◽  
Effects Of Ph ◽  
Deep Ultraviolet ◽  
Fluorescent Quantum Yield ◽  
Green Fluorescent

pH value of fluorescent ink-jet ink has an obvious influence on fluorescent powder, high or low pH value could cause some problems, such as fluorescence quenches, fluorescent quantum yield decreased, and so on. And these factors make against fluorescent ink-jet ink luminous properties reach the best result. This article is to design fluorescent ink-jet ink formula when it is exposured to deep Ultraviolet light to display green, and a series of ink samples were prepared. pH regulator was used to regulate pH value of green fluorescent ink-jet ink system. This paper discusses the effects of pH value on luminous intensity, fluorescent quantum yield. The results indicated that triethanolamine can regulate pH value of fluorescent ink-jet ink, when pH value increases from 8.70 to 11.20, luminous intensity, fluorescent quantum yield have a decrease tendency.

scholarly journals Human capital training and development in the context of the 4th industrial revolution

2021 ◽  
Author(s):  
Dao Duy Tung
Keyword(s):  
Industrial Revolution ◽  
Technology Development ◽  
Scientific Information ◽  
Great Influence ◽  
Analysis Data ◽  
Training And Development ◽  
Economic Management ◽  
Interview Method ◽  
Expert Interview

The fourth technological revolution has an indelible effect on the way live our lives. In view, Vietnam will surely face many difficulties when education in Vietnam is geared heavily to transfer knowledge, not to develop qualities and competence of learners. While past education models focused on providing learners with knowledge and skills needed to help them become highly skilled people, educators today are more concern with teaching students to study by themselves. Technology development has a great influence on the teachers’ role in the classroom. In the 4th industrial, the education system must focus on developing learners’ qualities and competencies by directing the most appropriate paths for different groups of students to help them promote the potential of each individual. This should be applied at all education and training levels. For higher education, the success of a university is not just the rate of graduates, the ability to find jobs of students or the position on the international rankings, but also the sustainable and long-term development of students, their ability to take risks, their capacity for innovation and creativity.In a study, the author used expert interview method and analysis data statistical of Institute for Scientific Information - Vietnam Academy of Science And Technology, Central Institute for Economic Management. Therefore, the author giving some recommendations for training and development of Vietnam's human resources. ISBN: 978-604-803-9561

Development of the Small-Sized Equipment for Detecting Short-Wave Irregularity of the Top Rail

2011 ◽  
Vol 255-260 ◽  
pp. 4039-4042
Author(s):  
Yue Lei He ◽  
Wen Liang Zhu ◽  
Ji Kun ◽  
Bin Zeng ◽  
Chen Yang
Keyword(s):  
Virtual Instrument ◽  
Great Influence ◽  
Short Wave ◽  
Scientific Basis ◽  
Displacement Sensor ◽  
Daily Work ◽  
Track Maintenance ◽  
Development Platform ◽  
Train Operation ◽  
Measurement Principle

Short-wave irregularity of top rail has great influence on status of both train operation and rail track. Based on the non-contact measurement principle and the virtual instrument development platform with powerful function, the paper designs the system for detecting short-wave irregularity of the top rail based on virtual instrument with the eddy current displacement sensor. The system can realize online real-time display, analysis, processing, storage and search of historical data and printing. With this method, we can detect the smoothness of rails and provide a better scientific basis for making a plan to guide the daily work of track maintenance.

Research on the Influence of Ink Surface Tension to the Formation of Ink Droplet

2012 ◽  
Vol 262 ◽  
pp. 329-333
Author(s):  
Chun Jiang Jia ◽  
Guang Xue Chen ◽  
Xiao Zhou Li ◽  
Lei Zhao
Keyword(s):  
Mathematical Model ◽  
Surface Tension ◽  
Substrate Surface ◽  
Digital Printing ◽  
Satellite Droplet ◽  
Ink Jet Printing ◽  
Print Head ◽  
Ink Jet ◽  
Jet Printing ◽  
The Relationship

Ink jet printing, as the key point of digital printing development, has already got some progress as technical be concerned, and also it has been used in industrial producing. But until now, ink jet printing still has some problems to be solved, include satellite droplet, droplet dimension, and spreading of droplet on substrate and so on. These problems involving parameters include dimension and geometry of the print-head, quality and characteristics of the control signal, surface tension of the ink, viscosity of the ink, characteristics of the substrate surface and so on. In this paper we just analysis the influence of ink surface tension to the process from jet to formation of the droplet by establishing mathematical model, but keep other parameters unchanged. At last, we get the relationship between ink surface tension and droplet parameters, so that it can be used as theoretical basement for print-head design and researching of ink.

scholarly journals Particle-Based Dynamic Water Drops with High Surface Tension in Real Time

Symmetry ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1265
Author(s):  
Ki-Hoon Kim ◽  
Jung Lee ◽  
Chang-Hun Kim ◽  
Jong-Hyun Kim
Keyword(s):  
Surface Tension ◽  
Real Time ◽  
Liquid Metals ◽  
High Surface ◽  
Computational Cost ◽  
Great Influence ◽  
Fluid Simulation ◽  
Control Surface ◽  
Time Step ◽  
High Surface Tension

Surface tension has a great influence on the shape of the fluid interface, and is an important physical characteristic in expressing not only liquids but also liquid metals such as mercury and gallium. In the field of physics-based particle fluid simulations, it is a challenging problem to express the high surface tension generated by fluid-air or fluid-solid interaction in real time. The main reasons for this are (1) The magnitude of the force that can be stably expressed in real-time fluid simulation is limited, so when the magnitude of the surface tension increases at a large time-step, the simulation stability decreases, and (2) If we use a small time-step, a stronger force can be expressed. However, it becomes difficult to operate in real time because the computational cost increases. Techniques were proposed to solve this problem for a few specific scenes, but there has not yet been a general approach that can reliably express high surface tension in various scenarios. In this paper, we propose a real-time particle-based fluid simulation framework that can efficiently and stably express high surface tension. Unlike the previous methods, we newly model the surface tension so that the strong surface tension force generated in the droplet area with a large curvature is applied evenly in the normal and tangent directions regardless of the size of the droplet. We also propose new pressure constraints that converge quickly and accurately using this force. Our method can be effectively used in various physics-based simulation scenarios because it can easily express and control surface tension effects that appear in materials such as liquid metal as well as water.

scholarly journals Influence of primers on the optical characteristics of ink-jet imprints

Mechanika ◽  
2020 ◽  
Vol 26 (4) ◽  
pp. 360-364
Author(s):  
Kęstutis Vaitasius ◽  
Svitlana HAVENKO ◽  
Svitlana KHADZHYNOVA ◽  
Konrad OLEJNIK ◽  
Edmundas Kibirkštis
Keyword(s):  
Great Influence ◽  
Digital Printing ◽  
Wide Field ◽  
High Quality ◽  
Ink Jet Printing ◽  
Ink Jet ◽  
Jet Printing ◽  
Digital Ink ◽  
Pigment Ink

The quality of ink-jet printing depends to a large extent on the technical characteristics of the selected equipment and the surface properties of the printed substrates. It is known that for digital printing it is necessary to use expensive paper with a special coating that determines the degree of gloss of the surface. Therefore, ordinary offset papers before ink-jet printing are covered with primers that ensure good fixation of pigment ink or dye on paper, a wide field of color coverage, characteristic gloss, which generally contribute to high quality of imprints. As you can see, the type of the substrate and the state of its surface has a very great influence on the quality of the imprints. Result of the research, it has been confirmed that not only expensive paper of a special purpose can be used for a drop ink-jet digital printing. High-quality color imprints can also be obtained on ordinary offset and coated paper, coated before printing with special primers based on interpolymeric complexes of polyvinyl alcohol, which will provide sufficient optical density, contrast of images, and expand the possibilities of digital ink-jet printing.

scholarly journals How does a Fly Cling to The Under Surface of a Glass Sheet?

1987 ◽  
Vol 129 (1) ◽  
pp. 373-376 ◽  
Author(s):  
V. B. WIGGLESWORTH
Keyword(s):  
Surface Tension ◽  
Atmospheric Pressure ◽  
Adhesive Force ◽  
Lipid Film ◽  
Lipid Secretion ◽  
Blood Sucking ◽  
Frictional Forces ◽  
Adhesive Organs ◽  
Surface Tension Forces ◽  
Vertical Up

The climbing of flies on glass is a problem that still lacks an agreed solution. West (1862), who introduced the term ‘tenent hairs’ for the trumpet-like structures on the pulvilli, regarded these as suckers which ensured adhesion by atmospheric pressure. But it is generally agreed that they are too small for that. Dahl (1885), studying adhesive organs in insects in general, favoured adhesion by ‘capillarattraction’ but he considered that other forms of cohesion and adhesion were operating as well. Rombouts (1884) opted for surface tension. In the most recent paper, Walker, Yule & Ratcliffe (1985) give a new description of the adhesive organs in the blowfly Calliphora, and conclude from calculations that surface tension of the lipid secretion under the tenent hairs provides an adequate adhesive force. The pad of setae at the lower extremity of the tibia of the first two pairs of legs, which is present in the adult of the blood-sucking bug Rhodnius and is used in climbing on a smooth surface (Gillett, 1932), has a totally different structure from that of the adhesive organ of the fly. In making a combined investigation (Gillett & Wigglesworth, 1932) we believed at first that surface tension in the lipid secretion between the oblique endings of the hairs and the surface would prove to be the adhesive force. But after experiments on insects and models, helped by discussions with N. K. Adam, we decided that direct intermolecular attraction, generated when the lipid film breaks down during sliding (i.e. seizure or partial seizure), was probably the more important force. The tibial organ is present only on the first two pairs of legs of the adult Rhodnius, but these large (2 cm) insects can climb a steeply sloping sheet of glass. When the glass is vertical they slip down very slowly. In the experiments of Edwards & Tarkanian (1970), some Rhodnius adults held on to glass at angles greater than vertical, up to a mean of 109°. Beyond that they fell off. These are characteristic properties of the frictional forces dependent on molecular attraction, which do not resist separation by forces acting in the axis normal to the surface unless the areas in contact are molecularly smooth (Bowden, 1957). Edwards & Tarkanian (1970), in repeating the experiments on Rhodnius, accepted our interpretation - with the proviso that meniscus (surface tension) forces will, of course, be operating at the same time.

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