Novel Gelation System For Fabricating 3-D Structures via Ink Jet Printing

2009 ◽  
Vol 1239 ◽  
Author(s):  
Rachel E. Saunders ◽  
Kwan P Liem ◽  
Robert J Mart ◽  
Simon J Webb ◽  
Brian Derby
Keyword(s):  
Layer By Layer ◽  
Delivery Method ◽  
Form Complex ◽  
3 Dimensional ◽  
On Demand ◽  
Drop On Demand ◽  
Ink Jet ◽  
The Matrix ◽  
Jet Printing ◽  
Printing Parameters

AbstractDrop-on-demand inkjet printing is a fabrication technique that is capable of depositing materials layer-by-layer to form complex 3-dimensional (3-D) constructs. Here we present a new single drop delivery method in which both the matrix and cross-linker are present but separated through the use of vesicle packaging. Changing the printing parameters has little effect on the integrity of the calcium(II)-loaded vesicles, with calcium(II) released selectively by warming after printing. Alginate solutions containing calcium(II)-loaded vesicles were successfully printed and the printed layers were shown to gel on demand at 37 °C. The printed alginate layers were evaluated with regards to their potential to provide 3-D structures for cell culture.

Ink Jet printing of mammalian primary cells for tissue engineering applications

2004 ◽  
Vol 845 ◽  
Author(s):  
Rachel Saunders ◽  
Julie Gough ◽  
Brian Derby
Keyword(s):  
Cell Types ◽  
Human Osteoblast ◽  
Primary Cells ◽  
Drop Velocity ◽  
Primary Human Osteoblast ◽  
On Demand ◽  
Drop On Demand ◽  
Ink Jet ◽  
Jet Printing ◽  
Robust Response

ABSTRACTA piezoelectric drop on demand printer has been used to print primary human osteoblast and bovine chondrocyte cells. After deposition the cells were incubated at 37°C and characterised using optical microscopy, SEM and cell viability assays. Cells showed a robust response to printing exhibiting signs of proliferation and spreading. Increasing the drop velocity results in a reduced cell survival and proliferation rates but both cell types grew to confluence after printing under all conditions studied.

scholarly journals Superconducting HfO2-YBa2Cu3O7−δ Nanocomposite Films Deposited Using Ink-Jet Printing of Colloidal Solutions

Coatings ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 17 ◽  
Author(s):  
Hannes Rijckaert ◽  
Pablo Cayado ◽  
Rainer Nast ◽  
Javier Diez Sierra ◽  
Manuela Erbe ◽  
...  
Keyword(s):  
Nanocomposite Films ◽  
Pinning Force ◽  
Colloidal Solutions ◽  
Ink Jet Printing ◽  
Drop On Demand ◽  
Ink Jet ◽  
Jet Printing ◽  
Printing Parameters ◽  
Critical Current Density Jc ◽  
Pinning Properties

To reduce the fabrication costs while maximizing the superconducting and pinning properties of YBa2Cu3O7−δ (YBCO) nanocomposite films, the drop-on-demand ink-jet printing technique was used to deposit colloidal YBCO inks onto LaAlO3 substrates. These inks containing preformed HfO2 nanocrystals were carefully adjusted, prior to the jettability, as the droplet formation depends on the rheological properties of the inks themselves. After carefully adjusting printing parameters, 450-nm thick pristine YBCO films with a self-field critical current density (Jc) of 2.7 MA cm−² at 77 K and 500-nm thick HfO2-YBCO nanocomposite films with a self-field Jc of 3.1 MA·cm−² at 77 K were achieved. The final HfO2-YBCO nanocomposite films contained dispersed BaHfO3 particles in a YBCO matrix due to the Ba2+ reactivity with the HfO2 nanocrystals. These nanocomposite films presented a more gradual decrease of Jc with the increased magnetic field. These nanocomposite films also showed higher pinning force densities than the pristine films. This pinning enhancement was related to the favorable size and distribution of the BaHfO3 particles in the YBCO matrix.

Direct Ink-Jet Deposition of Ceramic Green Bodies: I - Formulation of Build Materials

1998 ◽  
Vol 542 ◽  
Author(s):  
K. A. M. Seerden ◽  
N. Reis ◽  
B. Derby ◽  
P. S. Grant ◽  
J. W. Halloran ◽  
...  
Keyword(s):  
Rapid Prototyping ◽  
Stearic Acid ◽  
On Demand ◽  
Direct Deposition ◽  
Drop On Demand ◽  
Ink Jet ◽  
Jet Printing ◽  
Printing System ◽  
Ceramic Suspensions ◽  
Materials Used

AbstractA conventional rapid prototyping technology has been used to build prototypes using direct deposition through a drop-on-demand ink-jet printing system. Al2O3 - filled waxes have been developed with viscosity values close to those of the materials used in commercial printing systems. Commercial dispersants based on stearic acid and sterylamine have been studied and stable ceramic suspensions with ceramic volume fractions in the range 20–40 volume% produced with suitable viscosity. A suspension of 20% Al2O3 in an alkane wax has been successfully printed.

Photoacoustic ejection from a nozzle (PEN) for drop-on-demand ink jet printing

1982 ◽  
Vol 21 (11) ◽  
pp. 1891 ◽  
Author(s):  
A. C. Tam ◽  
W. D. Gill
Keyword(s):  
Ink Jet Printing ◽  
On Demand ◽  
Drop On Demand ◽  
Ink Jet ◽  
Jet Printing

Deposition of Molten Eutectic Solder using Jet Printing Techniques

1995 ◽  
Vol 390 ◽  
Author(s):  
Michael D. Snyder ◽  
Ronald Lasky
Keyword(s):  
Surface Tension ◽  
Circuit Boards ◽  
Eutectic Solder ◽  
On Demand ◽  
Drop On Demand ◽  
Single Feature ◽  
Ink Jet ◽  
Jet Printing ◽  
Printing Techniques ◽  
Large Spherical

ABSTRACTThis paper discusses the use of Ink Jet printing techniques to dispense small (50 to 75 micrometer diameter) particles of molten eutectic solder individually at programmable dispense rates from drop on demand to several thousand per second. Alternative jet dispensing techniques are discussed. The technology could allow the selective application of programmable amounts of solder on precision circuit boards and wafer substrates, while avoiding the high cost and flexibility limits associated with hard tooling. Large solder features can be constructed by dispensing individual droplets and relying on surface tension to draw them together to form a large single feature. Alternatively, columnar features can be created by successively dispensing solder droplets at the same site, allowing time between successive droplets to avoid forming a single large spherical feature.Several potential application areas in industry are discussed along with some of the issues associated with the projected performance of the method in the accuracy and speed domains.

scholarly journals Ink-jet Printing of YBa2Cu3O7 Superconducting Coatings and Patterns from Aqueous Solutions

2012 ◽  
Vol 1449 ◽  
Author(s):  
Isabel Van Driessche ◽  
Jonas Feys ◽  
Pieter Vermeir ◽  
Petra Lommens
Keyword(s):  
Coated Conductors ◽  
Proof Of Concept ◽  
Continuous Processing ◽  
Ink Jet Printing ◽  
On Demand ◽  
Drop On Demand ◽  
Novel Approach ◽  
Ink Jet ◽  
Fluid Properties ◽  
Jet Printing

ABSTRACTIn this paper, we combine the use of Drop-on-Demand (DOD) ink-jet printing with completely water- based inks as a novel approach to the CSD process for coated conductors. This method holds the promise of improved scalability due to lower ink losses, continuous processing and a drastically increased precursor lifetime due to the prevention of solvent evaporation and dust incorporation. Moreover, ink-jet printing has the potential to switch quite easily from continuous coatings to a multi-filamentary pattern, which is particularly important for alternating current (AC) or field applications of coated conductors. The fluid properties, often expressed with dimensionless constants, like the Reynolds and Weber numbers, for printable liquids were determined. For proof-of-concept, single crystals of SrTiO3 with a low mismatch towards YBCO, were used as substrates.

Formulation of a ceramic ink for a wide-array drop-on-demand ink-jet printer

2003 ◽  
Vol 29 (8) ◽  
pp. 887-892 ◽  
Author(s):  
X. Zhao ◽  
J.R.G. Evans ◽  
M.J. Edirisinghe ◽  
J.H. Song
Keyword(s):  
On Demand ◽  
Drop On Demand ◽  
Ink Jet

Drop-on-Demand Printing of Carbon Black Ink by Electrohydrodynamic Jet Printing

2012 ◽  
Vol 12 (1) ◽  
pp. 446-450 ◽  
Author(s):  
Sung Yul Back ◽  
Chi Ho Song ◽  
Seongil Yu ◽  
Hyoung Jin Lee ◽  
Beom Soo Kim ◽  
...  
Keyword(s):  
Carbon Black ◽  
On Demand ◽  
Drop On Demand ◽  
Electrohydrodynamic Jet Printing ◽  
Jet Printing

Mechanics-Related Problems of Magnetic Recording Technology and Ink-Jet Printing

1986 ◽  
Vol 39 (11) ◽  
pp. 1665-1677 ◽  
Author(s):  
D. B. Bogy ◽  
F. E. Talke
Keyword(s):  
Magnetic Recording ◽  
Flexible Substrate ◽  
Disk File ◽  
Rotating Disks ◽  
Recording Technology ◽  
Disk Interface ◽  
On Demand ◽  
Drop On Demand ◽  
Fluid Jets ◽  
Jet Printing

In this paper, mechanical aspects of magnetic recording technology and nonimpact printing are discussed. In the recording area, theoretical and experimental aspects of air bearing theory, head/disk dynamics, and head/disk tribology are studied. Flutter of rotating disks is investigated, the flow field between rotating disks is described, and nonrepeatable run-out of disk file spindles is studied. Furthermore, the head/disk interface for flexible media is discussed and dimensional stability of flexible substrate is examined. In the printing area, experimental and theoretical investigations using continuous and drop-on-demand fluid jets are presented, and numerical calculations of the drop formation process in drop-on-demand fluid jets are described.

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