Dissertations / Theses on the topic 'Ink Jet printing'
To see the other types of publications on this topic, follow the link: Ink Jet printing.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Ink Jet printing.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Daniel, Richard Crosson. "Ink-media interactions in ink-jet printing /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/9829.
Full text
2
Babaei, Lavasani Mohammad R. "Ink-jet printing of textiles." Thesis, University of Manchester, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488155.
Full text
3
Tay, Bee Yen. "Continuous direct ink jet printing." Thesis, Queen Mary, University of London, 2001. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1560.
Full textAbstract:
This thesis describes the preparation and continuous printing of zirconia ink under different conditions, as well as the development of silver inks, for the same purpose. The dispersion of sub-micrometer zirconia powder in industrial methylated spirit using other additives such as dispersant and binder was investigated with different mixing methods and at varying powder and binder contents. The use of high shear mixing by triple roll milling followed by ultrasonic disruption as well as adequate sedimentation and filtration produced a homogeneous and stable ink of 2.5 vol. % ZrO2. The ink could be printed directly and continuously on a commercial jet printer without interruption of any kind and the phenomena occurring during printing were investigated. The optimum modulation frequency for printing was determined with the generation of pear-shaped and symmetrical droplets. Printing was made on substrates of surface free energies lower and higher than the surface tension of the Zr02 ink. Powder migration was observed within a relic of the printed dot on the second type of substrate. Layers were also overprinted on the second type of substrate by varying the following: print resolution, printing interval, print area, drying conditions and ink powder loading. These series of prints were accompanied by the appearance of ridges, spattering and non-vertical walls and the effects were investigated. The wettability and shrinkage of droplets of the ceramic ink was also studied in-situ by monitoring the evolution of contact angle, width of ink-substrate interface and droplet height with a video camera. The shape of the droplet experienced different dynamics on different types of substrate. Lastly, the sedimentation behaviour of ethanol-based silver inks dispersed with different types of dispersant was investigated with respect to the sediment volume and half-value time. Deflocculated ink was obtained at a low dispersant level and powder loading.
4
Di, Biase Manuela. "Ink-jet printing of cell-containing scaffolds." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.498840.
Full text
5
Wang, Jian. "Combinatorial ink-jet printing for ceramic discovery." Thesis, Queen Mary, University of London, 2006. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1759.
Full textAbstract:
An aspirating and dispensing printer established inside a robot gantry equipped with furnace and measurement table is used to prepare thick-film combinatorial libraries. Implementation of series of screening tests for ceramic inks that address stability against sedimentation, evaporation and particle segregation during drying, has provided a series of calibration inks can be used for calibration of this printer. The instrument can assemble ceramic mixtures with compositional accuracy of 1-3 wt %. By changing the amount of dispersant used in the inks or by printing onto a porous substrate, the geometry of residues from dried ceramic ink droplets can be modified to facilitate property measurements and uniform composition, as planned, can be achieved. The same material prepared in three ways, in the form of dried ink, ink-jet printed as for a combinatorial sample and by conventional compaction gave similar dielectric measurements. A combinatorial system has been developed so that combinatorial libraries can be printed, fired and screened automatically. A ternary A1203-TiO2-ZrO2 system was first studied using the developed combinatorial method. The particle segregation during drying of multi-component ceramic ink drops is not due to preferential sedimentation unless dispersant addition is restricted. The segregation is due to the partitioning of particles between the growing peripheral 'foot' that develops during drying and the diminishing liquid pool which contains vigorous recirculation flows. Better dispersed particles remain in the pool and hence are found in excess on the upper surface of residues. Less well dispersed particles join the 'foot' earlier in the drying process. The contact angle and height of droplets containing large amounts of dispersant, steadily reduced during drying until a minimum value was reached; the contact diameter being almost unchanged during drying. These droplet residues retained a dome shape. Droplets of suspensions containing small additions of dispersant terminated in a 'doughnut' shaped residue.
6
Johns, Ashley Stephen. "Ink-jet printing of multi-phase formulations." Thesis, Durham University, 2017. http://etheses.dur.ac.uk/12511/.
Full textAbstract:
Ink-jet formulations are tailored for specific applications to give high performance in storage, during jetting, as drops impact the substrate and during evaporation; high performance of the final product is also targeted. This thesis explores the ink-jet printing of multi-phase formulations and their potential applications. First, phase-separating inks were investigated. Formulations based upon binary mixtures of partially miscible liquids were explored: the minor component in suitable formulations was present initially below its miscibility limit and increased in concentration during evaporation until the mixture passed the binodal. Aqueous solutions of di(propylene glycol) methyl ether acetate (DPGMEA) phase separated after jetting: the new oil-rich phase formed at the contact line where evaporative flux is greatest. Phase-selective patterning was demonstrated using sodium oxalate and benzoic acid, which partitioned into opposite phases. Decane-in-methanol solutions phase separated throughout the drop but the high volatility of methanol did not allow composition gradients to equilibrate; phase selective patterning is not possible for this mixture. A quantitative criterion for the observation of phase separation during evaporation was developed and may be calculated from reference data. Second, the delivery of high-molecular-weight (MW) polymers via emulsions was investigated. The ink-jet printing of high-(MW) polymers in solution is non-trivial: first, concentrated solutions are too viscous for print heads. Second, high strain rates during printing causes chain degradation. Third, high strain rates cause polymers to undergo the coil-stretch transition and introduce non-Newtonian jetting dynamics: long-lived elastic filaments develop that delay drop breakoff and decelerate the main drop. Emulsions shield polymers from high strain rates during printing through the interfacial tension and Gibbs elasticity of the dispersed phase droplets; strain occurs only in the polymer-free continuous phase. The optimised model formulation contained 3.8 %wt polystyrene (Mn = 419 kDa) overall; polystyrene was dissolved in methyl benzoate and dispersed throughout an aqueous solution of sodium dodecylsulphate. During evaporation on the substrate, the dispersed phase coalesced to give an even polystyrene deposit with the shape of a spherical cap. The emulsion increased the maximum printable concentration of the polymer by a factor of 15 and long-lived elastic filaments were not formed during jetting. A variety of discontinuous phase solvents were trialled: nozzle clogging was more frequent with toluene and anisole, whilst diethyl phthalate did not evaporate on the substrate. A neutrally buoyant discontinuous phase is advantageous.
7
Kirkhorn, Tomas. "Continuous ink jet printing of medical images." Lund : Dept. of Electrical Measurements, Lund Institute of Technology, 1993. http://books.google.com/books?id=YiJrAAAAMAAJ.
Full text
8
Li, Xiaofei. "New colorants for ink jet printing on textiles." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/10113.
Full text
9
Yang, Kai. "Reactive dye ink-jet printing on wool fabrics." Thesis, University of Leeds, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493793.
Full textAbstract:
Reactive dyes have been extensively used in wool coloration due to their high percent fixation, brightness and all-round colour fastness. The application of the three most popular reactive dyes (Drimarene K: difluoromonochloropyrimidine; Remazol: vinylsulphone precursors; Lanasol: a-bromoacrylamido) via ink jet printing on wool fabrics has been explored in this work.
10
Alamry, Khalid Ahmad Abet. "Flow induced polymer degradation during ink-jet printing." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/flow-induced-polymer-degradation-during-inkjetprinting(88d2394a-d6be-4291-ba64-9544932e5279).html.
Full textAbstract:
The effect of hydrogen bonding interactions on the drop generation of both acid and hydroxyl-containing polymer solutions is reported showing that polymer chain relaxation can be influenced through the use of appropriate polymer co-solvent interactions for polymers having weight average molecular weight (Mw) < 100 kDa. Reported for the first time is evidence of flow-induced polymer degradation during inkjet printing for both poly(methylmethacrylate) and polystyrene in good solvent. Polymers having Mw either less than 100 kDa or greater than approximately 1,000 kDa show no evidence of molecular weight degradation. The lower boundary condition is a consequence of low Deborah number imposed by the printhead geometry and the upper boundary condition due to viscoelastic damping. For intermediate molecular weights the effect is greatest at high elongational strain rate and low solution concentration with higher polydispersity polymers being most sensitive to molecular weight degradation. For low polydispersity samples, PDi £ 1.3 chain breakage is essentially centro-symmetric induced either by overstretching when the strain rate increases well beyond a critical value, that is the stretching rate is high enough to exceed the rate of relaxation or by turbulence. For higher polydispersity samples, PDi chain breakage is consistent with almost random scission along the chain inferring that the forces required to break the chain are additionally transmitted either by valence bonds, i.e. network chains and junctions or discrete entanglements rather than solely by hydrodynamic interaction. Preliminary results are presented on the degradation of molecular structure in water of two galactomannan’s in water after inkjet printing. Galactommann’s are known to form complex H-bonded structures in water and the results are consistent with breaking of the H-bonding structure at low reduced concentration with evidence of main chain breakage at higher reduced concentration, c/c* = 0.25.
11
Li, Xiaofei. "New coloration system for ink jet printing on textiles." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/8597.
Full text
12
Momin, Nasar, and nasarhm@gmail com. "Chitosan and improved pigment ink jet printing on textiles." RMIT University. Fashion and Textiles, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20081029.154501.
Full textAbstract:
The purpose of this research was to explore two ways of the application of chitosan, a biopolymer, for ink jet printing of textiles. 1) To apply chitosan as a post-treatment on the fabric ink jet printed with pigment based inks for the fixation of pigments on the fabric. 2) To incorporate chitosan as a binder in pigment based ink jet ink formulations. The incorporation of chitosan was carried out in two ways. 1) Direct addition of chitosan into the ink formulations containing surface modified pigments. 2) Preparation of chitosan encapsulated pigment nanoparticles using complex coacervation technique and using these nanoparticles for the formulation of ink jet ink. The degree of deacetylation (DD) was determined using FTIR spectroscopy. Various protocols proposed by researchers were used to determine the DD of chitosan samples used in the present study. The protocol proposed by Raut was found to be fairly accurate in determining the DD of chitosan samples. The molecular weight of chitosan was estimated using dilute solution viscometry method. The characterisation of the film forming ability of chitosan was evaluated using scanning electron microscopy (SEM). The colour strength (K/S), colour difference, colour characteristics and colour fastness to laundering and rubbing of ink jet printed fabrics post treated with chitosan were evaluated using standard methods. Post-treatment (pad-dry-cure method) of cotton fabric ink jet printed with pigment based inks revealed that chitosan could effectively fix the pigments on cotton compared to the commercial textile binders and the water-soluble derivative of chitosan. The chemical interaction between chitosan and cotton fabric was illustrated by FTIR-ATR analysis and through determination of carboxyl group content. The ink jet printed cotton fabric post treated with 3gpl chitosan (MW 156,156) maintained almost 86% of bacterial reduction against Klebsiella Pneumoniae even after 50 launderings. Inks containing chitosan were formulated and were found to be stable in terms of mean particle size and viscosity over a period of one month and for 4 freeze/thaw cycles. A magenta ink containing chitosan was selected for ink jet printing of cotton fabric. It was found that the DF was around 97% for magenta ink containing chitosan compared to around 53% fixation for magenta ink without chitosan on cotton fabric. Surface modified carbon black pigment with carboxylated (COO-) surface functionality was selected to prepare chitosan encapsulated pigment nanoparticles by complex coacervation technique. Chitosan encapsulated pigment nanoparticles with mean particle size diameter of 876 nm and 742 nm were formed when 5 ml of 0.1% w/v pigment was mixed with 2ml and 3ml of 0.1% w/v chitosan, respectively. However, no correlation was found between the particle size of the nanoparticles formed and the concentration of chitosan. The DF with ink containing chitosan encapsulated pigment nanoparticles was found to be around 98% while the blank ink with only surface modified carbon black pigment showed 44% fixation.
13
Zeng, Jianming. "Controlled structure UV curable resins for ink jet printing." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/8714.
Full text
14
Jeon, Jessie Sungyun. "Optimization of PZT processing using thermal ink-jet printing." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45825.
Full textAbstract:
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008.Includes bibliographical references (leaves 28-29).
Lead zirconate titanate (PZT) has been known for its strong piezoelectric property for micro-sensors and actuators. Yet, its use in MEMS has been constrained by limitations in processing PZT with current MEMS fabrication technology. The direct printing of PZT, in place of traditional manufacturing process such as spin-coating, enables on-demand deposition, allowing flexibility in thickness and shape of PZT deposition with a lower material cost. This thesis reports the thermal process optimization of the direct printing method to ensure the quality of PZT products. The pyrolysis portion of the thermal processing condition has been analyzed to show that pyrolysis performed at 360°C for 2 hours removes a sufficient amount of organic additives. There also exists a positive correlation for the duration of pyrolysis and the amount of desired perovskite phase crystal structure formed. The multi-layer printing has been experimented to remove the PZT voids in the sample. However, P-V curve or resistivity data were unable to show much improved performance. This is believed to be caused from the degradation of PZT, which were left under humid condition before the final annealing process. Further investigation will be continued to confirm the effect of multi-layer printing.
by Jessie Sungyun Jeon.
S.B.
15
Bathurst, Stephen 1980. "Ink jet printing of PZT thin films for MEMS." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/78236.
Full textAbstract:
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 108-113).
Of the readily available piezoelectric engineering materials perovskite phase lead zirconate titanate (PZT) has the strongest mechanical to electrical coupling. PZT based devices have the potential to have the highest performance. Due to the strong piezoelectric response and low operating voltage, many groups have worked to integrate thin film PZT into a wide range of microelectromechanical systems (MEMS) devices including: actuators, energy harvesters, resonators, pressure sensors, pumps, nano-positioning stages, and MEMS switches. However, processing of thin film PZT is not readily compatible with existing MEMS fabrication processes and significant design constraints exist when integrating thin film PZT. In recent years drop-on-demand (DOD) printing has been studied as a robust, flexible, and inexpensive method of material deposition for MEMS. Direct printing enables the designer to deposit a film based on a digital pattern file only eliminating the need for photolithography and subsequent etching steps in the manufacturing process flow. There is a significant cost savings due to a reduction in the material consumption during manufacturing and in chemical waste produced. The result is a manufacturing process that is cleaner and cheaper than other common deposition techniques. The most compelling benefit of direct printing of PZT is that it provides a freedom of geometry that eliminates many of the design constraints currently associated with PZT MEMS. Since high quality thin films can be achieved with deposition control that is not possible with spin coating, novel functionalities can be incorporated into PZT MEMS. Specifically, PZT printing is able to deposit material over and around large out-of-plane features. In addition, the thickness of thin film PZT can vary deterministically across a device or across a wafer. A new manufacturing method for the deposition of PZT thin films based on ink jet printing has been developed and used to fabricate a piezoelectric micromachined ultrasonic transducer. A solvent system and processes parameters were established that enable the deposition of high quality PZT thin films. Substrate temperature and drop spacing for uniform deposition were determined and both multilayer and single layer PZT films were successfully deposited. Alignment within 10[mu]m and a resolution limit of 30[mu]m were demonstrated. The performance of a printed PZT based ultrasonic transducer was fit to established models to determine piezoelectric coupling and dielectric properties. The piezoelectric coupling coefficient, d₃₁, for printed PZT was between -75pC/N and -95pC/N. Impedance data at 1kHz provided the relative permittivity (750-890) and the dielectric loss tangent (2.4%-2.8%). The final printing process enabled the first digital deposition of thin film PZT and the printed PZT based pMUT confirmed the properties of the film are within the range required for a high performance piezoelectric MEMS devices.
by Stephen P. Bathurst.
Ph.D.
16
Betton, Eleanor Susanne. "Impact and coalescence of ink-jet printed drops." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610068.
Full text
17
Mayersky, Joshua. "Development and Characterization of Low Cost Tungsten Disulfide Ink for Ink-jet Printing." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1522418413569074.
Full text
18
Compagnon, Maxime. "Ink-Jet Printing of Color Optical Filters for LCD Applications." Thesis, Högskolan Dalarna, Materialteknik, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:du-2244.
Full textAbstract:
At the age of multi-media, portable electronic devices such as mobile phones, personal digital assistant and handheld gaming systems have increased the demand for high performance displays with low cost production. Inkjet printing color optical filters (COF) for LCD applications seem to be an interesting alternative to decrease the production costs. The advantage of inkjet printing technology is to be fast, accurate, easy to run and cheaper than other technologies. In this master thesis work, we used various disciplines such as optical microscopy, rheology, inkjet printing, profilometering and colorimetry. The specific aim of the thesis was to investigate the feasibility of using company-A pigment formulation in inkjet production of COF for active matrix LCD applications. Ideal viscosity parameters were determined from 10 to 20mPa·s for easy inkjet printing at room temperature. The red pigments used are fully dispersed into the solvent and present an excellent homogenous repartition after printing. Thickness investigations revealed that the printed COF were equal or slightly thicker than typically manufactured ones. The colorimetry investigations demonstrated color coordinates very close to the NTSC red standard. LED backlighting seems to be a valuable solution to combine with the printed COF regarding to the spectrum and color analysis. The results on this thesis will increase the understanding of inkjet printing company-A pigments to produce COF for LCD applications.
19
Hu, Qi-Ang. "UV curable resin for ink jet printing on textile substrates." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/8550.
Full text
20
Zhang, Yuqian. "Development of a custom ink-jet printing system for textiles." Thesis, University of Leeds, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.502764.
Full text
21
Day, R. F. "Boundary integral simulations of inviscid flows in ink-jet printing." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598431.
Full textAbstract:
Numerical simulations using a boundary integral method are used to model three inviscid fluid flows with surface tension. The problems considered are the motions of a free drop, the self-similarity in the shape of inviscid pinchoff, and the evolution of a finite jet. Various shapes of drops are studied, and their frequencies of oscillation are compared to result in the literature. Non-linear shapes are evolved, simulating a drop after ejection from a finite jet, which determines whether the drop holds together or forms satellites. Special numerical techniques are added to the code for free drops in order to model the pinchoff process. Evidence is found for a similarity solution for inviscid pinchoff which adopts a double-cone shape with one cone angle greater than 90°. A novel result is that the two cone angles are always about 18.1° and 112.8° independent of the initial conditions. The potential far from the pinchoff region in the numerical simulations is shown to match with certain scalings expected from a similarity solution. A model of a finite axisymmetric jet evolving from a fixed nozzle is used to simulate various conditions of drop ejection. Driven by a time-dependent backpressure, the jet forms a neck due to surface tension and pinches off. Various backpressure functions are imposed which cause different shapes of jets to emerge. The model is intended to simulate a drop-on-demand ink-jet printing process for which the optimum result is a fast, satellite-free drop that can be ejected repeatably.
22
Asokan, Srikumaran. "Color ink-jet printing : evaluation of print quality on different paper substrates /." Online version of thesis, 1990. http://hdl.handle.net/1850/11478.
Full text
23
Tian, Olivia Yingnan. "Pigmented and solvent dyed latex systems for ink jet printing on textiles." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/8681.
Full text
24
凌偉明 and Wai-ming Ling. "Study of ink behaviour when adding color to SLS models using ink-jet technology." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31243393.
Full text
25
Ling, Wai-ming. "Study of ink behaviour when adding color to SLS models using ink-jet technology /." Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B24702110.
Full text
26
Suffield, Sarah Rose. "Modeling the flow of a liquid droplet diffusing into various porous media for inkjet printing applications." Online access for everyone, 2008. http://www.dissertations.wsu.edu/Thesis/Spring2008/s_suffield_041808.pdf.
Full text
27
Clark, Aaron W. "Gloss Development of Spray-coated Systems." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/ClarkAW2004.pdf.
Full text
28
Li, Jiantong. "Ink-jet printing of thin film transistors based on carbon nanotubes." Doctoral thesis, KTH, Integrerade komponenter och kretsar, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-24427.
Full textAbstract:
The outstanding electrical and mechanical properties of single-walled carbon nanotubes (SWCNTs) may offer solutions to realizing high-mobility and high-bendability thin-film transistors (TFTs) for the emerging flexible electronics. This thesis aims to develop low-cost ink-jet printing techniques for high-performance TFTs based on pristine SWCNTs. The main challenge of this work is to suppress the effects of “metallic SWCNT contamination” and improve the device electrical performance. To this end, this thesis entails a balance between experiments and simulations. First, TFTs with low-density SWCNTs in the channel region are fabricated by utilizing standard silicon technology. Their electrical performance is investigated in terms of throughput, transfer characteristics, dimensional scaling and dependence on electrode metals. The demonstrated insensitivity of electrical performance to the electrode metals lifts constrains on choosing metal inks for ink-jet printing. Second, Monte Carlo models on the basis of percolation theory have been established, and high-efficiency algorithms have been proposed for investigations of large-size stick systems in order to facilitate studies of TFTs with channel length up to 1000 times that of the SWCNTs. The Monte Carlo simulations have led to fundamental understanding on stick percolation, including high-precision percolation threshold, universal finite-size scaling function, and dependence of critical conductivity exponents on assignment of component resistance. They have further generated understanding of practical issues regarding heterogeneous percolation systems and the doping effects in SWCNT TFTs. Third, Monte Carlo simulations are conducted to explore new device structures for performance improvement of SWCNT TFTs. In particular, a novel device structure featuring composite SWCNT networks in the channel is predicted by the simulation and subsequently confirmed experimentally by another research group. Through Monte Carlo simulations, the compatibility of previously-proposed long-strip-channel SWCNT TFTs with ink-jet printing has also been demonstrated. Finally, relatively sophisticated ink-jet printing techniques have been developed for SWCNT TFTs with long-strip channels. This research spans from SWCNT ink formulation to device design and fabrication. SWCNT TFTs are finally ink-jet printed on both silicon wafers and flexible Kapton substrates with fairly high electrical performance.QC 20100910
29
Fang, Mei. "Properties of Multifunctional Oxide Thin Films Despostied by Ink-jet Printing." Doctoral thesis, KTH, Teknisk materialfysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-102021.
Full textAbstract:
Ink-jet printing offers an ideal answer to the emerging trends and demands of depositing at ambient temperatures picoliter droplets of oxide solutions into functional thin films and device components with a high degree of pixel precision. It is a direct single-step mask-free patterning technique that enables multi-layer and 3D patterning. This method is fast, simple, easily scalable, precise, inexpensive and cost effective compared to any of other methods available for the realization of the promise of flexible, and/or stretchable electronics of the future on virtually any type of substrate. Because low temperatures are used and no aggressive chemicals are required for ink preparation, ink-jet technique is compatible with a very broad range of functional materials like polymers, proteins and even live cells, which can be used to fabricate inorganic/organic/bio hybrids, bio-sensors and lab-on-chip architectures. After a discussion of the essentials of ink-jet technology, this thesis focuses particularly on the art of designing long term stable inks for fabricating thin films and devices especially oxide functional components for electronics, solar energy conversion, opto-electronics and spintronics. We have investigated three classes of inks: nanoparticle suspension based, surface modified nanoparticles based, and direct precursor solution based. Examples of the films produced using these inks and their functional properties are: 1) In order to obtain magnetite nanoparticles with high magnetic moment and narrow size distribution in suspensions for medical diagnostics, we have developed a rapid mixing technique and produced nanoparticles with moments close to theoretical values (APL 2011 and Nanotechnology 2012). The suspensions produced have been tailored to be stable over a long period of time. 2)In order to design photonic band gaps, suspensions of spherical SiO2 particles were produced by chemical hydrolysis (JAP 2010 and JNP 2011 - not discussed in the thesis). 3) Using suspension inks, (ZnO)1-x(TiO2)x composite films have been printed and used to fabricate dye sensitized solar cells (JMR 2012). The thickness and the composition of the films can be easily tailored in the inkjet printing process. Consequently, the solar cell performance is optimized. We find that adding Ag nanoparticles improves the ‘metal-bridge’ between the TiO2 grains while maintaining the desired porous structure in the films. The photoluminescence spectra show that adding Ag reduces the emission intensity by a factor of two. This indicates that Ag atoms act as traps to capture electrons and inhibit recombination of electron-hole pairs, which is desirable for photo-voltaic applications. 4) To obtain and study room temperature contamination free ferromagnetic spintronic materials, defect induced and Fe doped MgO and ZnO were synthesized ‘in-situ’ by precursor solution technique (preprints). It is found that the origin of magnetism in these materials (APL 2012 and MRS 2012) is intrinsic and probably due to charge transfer hole doping. 5) ITO thin films were fabricated via inkjet printing directly from liquid precursors. The films are highly transparent (transparency >90% both in the visible and IR range, which is rather unique as compared to any other film growth technique) and conductive (resistivity can be ~0.03 Ω•cm). The films have nano-porous structure, which is an added bonus from ink jetting that makes such films applicable for a broad range of applications. One example is in implantable biomedical components and lab-on-chip architectures where high transparency of the well conductive ITO electrodes makes them easily compatible with the use of quantum dots and fluorescent dyes. In summary, the inkjet patterning technique is incredibly versatile and applicable for a multitude of metal and oxide deposition and patterning. Especially in the case of using acetate solutions as inks (a method demonstrated for the first time by our group), the oxide films can be prepared ‘in-situ’ by direct patterning on the substrate without any prior synthesis stages, and the fabricated films are stoichiometric, uniform and smooth. This technique will most certainly continue to be a versatile tool in industrial manufacturing processes for material deposition in the future, as well as a unique fabrication tool for tailorable functional components and devices.QC 20120907
30
Kohnen, Anne Stuart. "Drop-on-demand ink jet printing for three dimensional printer application." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11057.
Full text
31
Mhetre, Shamal Kamalakar. "Effect of fabric structure on liquid transport, ink jet drop spreading and printing quality." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28244.
Full textAbstract:
Thesis (M. S.)--Polymer, Textile and Fiber Engineering, Georgia Institute of Technology, 2009.Committee Chair: Dr. Radhakrishnaiah Parachuru; Committee Member: Dr. Dong Yao; Committee Member: Dr. Fred Cook; Committee Member: Dr. Wallace Carr; Committee Member: Dr. Yehia El Mogahzy
32
Kline, Elizabeth A. "Multi-variant analysis of real-world environmental variables affecting image fading on outdoor synthetic inkjet substrates /." Online version of thesis, 2006. https://ritdml.rit.edu/dspace/handle/1850/2845.
Full text
33
Denneulin, Aurore. "Inkjet printing of conductive inks for RFID technology : Influence of substrate, ink and process." Grenoble INPG, 2010. http://www.theses.fr/2010INPG0075.
Full textAbstract:
Ce travail examine le potentiel du procédé jet d'encre pour fabriquer des composants électroniques à bas coût. Trois axes de recherche sont explorés: (i) supports, (H) encres conductrices, et (iii) procédé. Les propriétés de surface du support comme la rugosité ou l'énergie de surface apparaissent comme des paramètres fondamentaux influençant la conductivité des pistes imprimées. Une pré-couche pour adapter les supports papiers avec l'électronique imprimée a donc été proposée. Des traitements alternatifs de frittage des encres nanométalliques ont été testés et de nouvelles encres conductrices à base de nanotubes de carbone (NTC) et de pOlymères conducteurs ont été formulées. Ces encres à base de NTC ont été étudiées plus en détail par l'analyse de l'influence du procédé d'impression et son impact sur les performances et l'organisation du réseau de NTCs. Cette étude donne de nouvelles possibilités pour l'électronique imprimée et ouvre la route à de nouvelles applications bas coûtThis work investigates the inkjet printing process to print conductive patterns for producing low cost electronic components. Three fields were explored: (i) substrates, (ii) conductive inks, and (iii) process. Substrate surface properties su ch as roughness or surface energy have a significant impact on conductivity of printed tracks. An innovative solution to make any paper suitable for printed electronics has then been proposed. Infrared and electrical treatments were tested as potential sintering alternatives of nanometallic inks, and new conductive inks based on carbon nanotubes (CNT) and conductive polymers were formulated. This new CNT-based ink has been studied more in details by analyzing influence of inkjet printing parameters and their impact on the CNT network organization and on the conductivity. This study represents an important step in the field of printing electronics, and also opens windows to new low cost applications such as smart packaging or flexible electronics
34
Gläser, Kerstin. "Ink Jet Printing auf Wasseroberflächen und dessen Verwendung zur Stabilisierung von Mikrosieben." Doctoral thesis, Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-216849.
Full textAbstract:
In dieser Arbeit wird gezeigt, wie Mikrosiebe über das Float Casting Verfahren hergestellt und durch Ink Jet Druck stabilisiert werden. Dazu wurde ein Verfahren entwickelt, das es erlaubt Mikrosiebe großflächig auf einem Langmuirtrog herzustellen und noch schwimmend auf der Wasseroberfläche zu bedrucken, so dass stabilisierte Mikrosiebe von der Wasseroberfläche abgehoben werden können. Zur Herstellung der Mikrosiebe wird das Prinzip der Partikel-assistierten Benetzung verwendet, bei dem eine Dispersion aus Silikapartikeln, Monomer und Initiator auf einer Wasseroberfläche gespreitet wird. Die Partikel ordnen sich dabei von selbst in einer hexagonal dichtesten Packung an und dienen sowohl als Spreithilfe als auch als Porenbildner. Nach dem Entfernen der Partikel entsteht ein poröses Mikrosieb mit einheitlichen, dicht gepackten Poren. Durch das Aufdrucken einer Wabenstruktur als Stützstruktur wird eine ausreichende Stabilisierung erreicht, so dass die Siebe in Filtrationsversuchen eingesetzt werden können. Das entstehende Gefüge, bestehend aus einem Mikrosieb mit einer Dicke im Nanometerbereich wird von einer Stützstruktur, welche eine Dicke im Mikrometerbereich besitzt, stabilisiert.
Außerdem wird gezeigt, wie eine Wasseroberfläche Schritt für Schritt modifiziert wird, so dass es möglich ist grazile Strukturen auf eine Wasseroberfläche zu drucken. Diese Strukturen können anschließend von der Wasseroberfläche abgehoben werden und stehen nach dem Trocknen als freistehende Strukturen zur Verfügung.
35
Karthikeyan, Arvind S. "A study using a high-addressability inkjet proofer to produce AM halftone proofs matching Kodak approval in color, screening, and subject moiré /." Online version of thesis, 2009. http://hdl.handle.net/1850/11246.
Full text
36
Svanholm, Erik. "Printability and Ink-Coating Interactions in Inkjet Printing." Doctoral thesis, Karlstad : Faculty of Technology and Science, Chemical Engineering, Karlstad University, 2007. http://www.diva-portal.org/kau/theses/abstract.xsql?dbid=572.
Full text
37
Lapinski, Richard Allen. "A case study to determine the feasibility of on-line ink jet printing of bar codes onto corrugated shipping containers /." Online version of thesis, 1995. http://hdl.handle.net/1850/12226.
Full text
38
Teng, Wan Dung. "Solid freeform fabrication of ceramics : continuous direct ink-jet printing and electrostatic atomization." Thesis, Brunel University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360823.
Full text
39
Glynn, Deborah. "The preservation and conservation of ink jet and electrophotographic printed materials." Thesis, Open University, 2001. http://oro.open.ac.uk/58177/.
Full textAbstract:
This research project has investigated the light fastness of ink jet and electrophotographic printed materials by the means of an extensive accelerated and natural ageing test programme. The effect of visible radiation of different wavebands on the deterioration of a selection of ink jet printed materials has also been assessed. The findings of the research indicate that all of the ink jet printed materials tested are sensitive to light and should not therefore, be put on permanent display. Most of the ink jet printed samples exhibited greater light sensitivity to the shorter wavelengths of the visible spectrum, than the longer wavelengths, with damage decreasing as wavelength increases. This relationship was not evident with the cyan and blue printed samples, which showed that their light sensitivity was determined by the spectral absorption characteristics of the printed patch. Some of the ink jet printed materials produced erratic fading rates on exposure to light. This phenomenon was attributed to either the occurrence of photochromism or the disintegration of the dye particles in the ink, but further testing needs to be conducted to gain a better understanding of this reaction. Other factors also influenced the light fastness of the ink jet materials, such as the type of paper employed for printing, ink concentration and ink combination. The electrophotographic printed materials were found to be more stable to light, although the yellow toner from some of the systems would show noticeable fading after approximately 65 to 325 years on permanent display (at 50 lux for eight hours per day). A range of basic conservation treatments was also been investigated and the results indicated that ink jet print materials are very sensitive to all forms of aqueous treatments. Finally, thermal/dark ageing has been performed on the digital printed papers employed in this investigation. The conclusion is that all of the papers are prone to yellowing in storage.
40
Mosiadz, Mariusz. "Inkjet printing of buffer and superconducting layers for YBa₂Cu₃O₇₋x coated conductors." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610415.
Full text
41
Abd-el-Kader, Magdy Ezzat. "Application of hot melt ink jet processes for imaging at offset printing form cylinder." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=970645775.
Full text
42
Abd, El Kader Magdy Ezzat. "Application of Hot-Melt Ink Jet Processes for Imaging at Offset Printing Form Cylinder." Doctoral thesis, Universitätsbibliothek Chemnitz, 2004. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200400092.
Full textAbstract:
The present work related to apply hot-melt ink-jet process for imaging at offset lithographic printing form, to utilise a reusable surface for many times and particularly related to validating thermal and ultrasonic erasing processes. This dissertation investigated systematically the role of certain factors towards affecting erasing image area process on print surfaces. Thermal erasing process approved to melt and suck the image area from the surface, the results were adopted by using contact angle measurements and scanning electron microscope. Ultrasonic erasing process permitted to solve the image area by choosing erasing chemistries, influence of selected erasing chemistries on printing surface, and evaluation the process, the results were tested by UV/Vis spectrometer, contact angle, profileometery and visual microscopeDer Fortschritt im Bereich von Charakterisierung und Verständnis für Hot-melt Ink Jet Prozesse zur Bebilderung von Offsetdruckform-Zylindern ist ein Ergebnis dieser Forschung. Die Systematik dieser Arbeit basiert auf einem theoretischen Teil, um einen geeigneten Löschprozess auszuwählen. Der Löschprozess hängt von den Eigenschaften des Hot-melt Ink Jet Materials und der genutzten Aluminiumdruckoberfläche ab. Diese werden systematisch im Labormaßstab experimentell untersucht. Der thermische Prozess wurde einerseits durch Benetzbarkeitsprüfungen und anderseites durch Rasterelektronmikroskopaufnahmen bewertet.Der Ultraschallprozess ist ein nasser Löschprozess. Die Untersuchungen wurden in vier Stufen systematisch durchgeführt - Auswahl vom geeigneten Lösungsmitteln - Einflüsse von ausgewählten Lösungsmitteln auf nicht beschichtete und beschichtete Aluminium platten - Evaluation eines Ultraschalllöschprozesses - Validation eines Löschprozesses; zur Bewertung des Löschprozesses wurden mehrere Druckplattenproben bebildert und gelöscht Die Ergebnisse wurden durch UV/Vis Spektrometer, Kontaktwinkel, Profiliometrie und Visuelle Mikroskopie getestet
43
Fuller, Sawyer Buckminster 1977. "A fast flexible ink-jet printing method for patterning networks of neurons in culture." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/89393.
Full text
44
Wang, Xi. "Drop-on-demand inkjet deposition of complex fluid on textiles." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26624.
Full textAbstract:
Thesis (Ph.D)--Polymer, Textile and Fiber Engineering, Georgia Institute of Technology, 2009.Committee Chair: Wallace W. Carr; Committee Member: Anselm Griffin; Committee Member: Carson J. Meredith; Committee Member: David G. Bucknall; Committee Member: Jeffrey F. Morris. Part of the SMARTech Electronic Thesis and Dissertation Collection.
45
DiSantis, Nicholas E. "Rub, fold, and abrasion resistance testing of digitally printed documents /." Online version of thesis, 2007. http://hdl.handle.net/1850/4489.
Full text
46
Park, Heungsup. "Drop impingement and interaction with a solid surface." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/8236.
Full text
47
Wang, W. C., and 王仲偉. "Reactive Black Dyes for Ink-jet Printing and Inks for PLED by Ink-jet Printing." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/92736143097020748316.
Full textAbstract:
碩士國立臺北科技大學
有機高分子研究所
92
Many years ago, digital printing was only possible for printing onto paper. Today, it has been used for direct printing on textiles successfully. One part of this research was to synthesize suitable black reactive dyes for ink-jet printing. Their printing properties (fastness, and colourants, etc.) and ink physical properties (viscosity, surface tension and solubility, etc.) were evaluated and compared with commercial inks. The dyes we made have better performance than commercial inks. Since some of the conductive polymers are solution processable, ink-jet printing can meet the process requirements of fabricating Polymer Light Emitting Diodes and offer reasonable cost and higher resolution. At moment, the flatness of the polymer films printed from inkjet printing can not meet the requirements. We think some physical properties (solubility, vapor pressure, surface tension and viscosity, etc.) will affect the flatness of the film. We found the flatness of the film from m-xylene, o-dichlorobenzene, and benzaldehyde are better than those from other solvents, the film inkjeted from 1% weight red emitting polymer in m-xylene are totally uniform.
48
Wu, Juei-Yuan, and 吳瑞原. "CAD system for 3D Ink Jet Printing." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/73281332191141608620.
Full textAbstract:
碩士國立清華大學
動力機械工程學系
99
In this study, the printing process of a 3D freeform surface printing is developed and the computing system to do the printing process such as printing path planning, printing picture handling, result previewing and simulating for 3D inkjet printing is also developed. In the computing system, users can set the parameters relate to 3D printing machine or users` needs as the computing constraints and basis. The process in this system has four major parts: model processing, printing path planning, printing picture handling and result computing and outputting. In model processing, it transfers the input information into regular data points for subsequent calculations. In printing path planning, it generates the printing path coordinates and printer head direction according to the setting condition and situation defined by user. In printing picture handling process also used to adjust the picture according to the restrictions, model slopes and such factors, which makes the image suitable for surface printing. In the last, system presents the printing path and image by showing the figures and doing animation of the printing process. Then transfer the path information and image to NC code and tif image to translate the printing information to 3D printing system. This system can provide a simple, convenient and clear processing environment to help the users do a proper printing path generation to get the path information and image to be print.
49
Wu, Chung-Ying, and 吳重瑩. "The Study of Catalyst Ink Applied to Ink-Jet Printing Process." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/67921321953122097755.
Full textAbstract:
碩士國防大學理工學院
化學工程碩士班
101
In this study, a method to fabricate high-resolution conductive metal pattern on a flexible substrate is described. This method involves inkjet printing of a thermo-sensitive St-co-NIPAAm/Pd nanoparticle-based ink on an untreated polymer to create the catalytic site, onto which nickel is subsequently deposited by an electroless plating process. The inherent low viscosity (1.5 cps) and high surface tension (45 dyne/cm) of this ink is detrimental to printability. Therefore, the main objective of this work is to find the effects of inkjet variables such as firing voltage and droplet spacing on the print quality and finally the optimum inkjet parameters. Our results show that the metal pattern with highest resolution in this work can be achieved with a voltage of 30 V and a backpressure of 5 psi. However, the optimal droplet spacing is relevant to the substrate used. For example, the optimal droplet spacing is about 30 μm for PET and between 25 to 30 μm for PC-ABS. In addition, our experimental study indicates that this method may prove suitable for fabricating micrometer scale patterns onto flat or curved surfaces.
50
LIN, TZ HAN, and 林子涵. "The study of metallization by ink jet printing." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/13518227290599498098.
Full textAbstract:
碩士國立臺灣大學
化學工程學研究所
96
Particle size strongly influences the catalytic and electronic properties of materials, therefore the development of reliable methods for the nano-size preparation has been in progress. Metallization by ink-jet printing offers a maskless alternative method to conventional process. Direct ink jet printing can provide low cost, and reduction in process complexity. In this study, we try to synthesize nanosilver particles by electrochemical methods and then ink-jet printing, combined with nanosilver preparation and electroless plating, has been developed and directly writes silver lines at low temperature. First of all, we have investigated the effect of overpotential in electrodepostion on the particle size, and the effects of electrodeposition on reaction rate in various reaction conditions. In the electrolytic system, the larger overpotential we applied, the smaller particle size we acquired as long as the overpotential is not beyond the potential of reduction of hydrogen. The smallest particle size obtained is 5.4 nm. The production rate of nanosilver particles by electrochemical method has also been found much faster than chemical reduction. The concentration of nanosilver particles by electrodeposition with chemical reduction is four and half times of that by chemical reduction. After ten times of printing we could acquire continuous lines by the formulated nanosilver ink. The silver lines which is thickened by silver electroless plating tiwce is about one thousand nanometers and its resistivity is 19.6 μΩ•cm.