inkjet – Page 3 – TechConnect Briefs

Inkjet ink containing inorganic doped semiconductor (ZnS:Mn) nanoparticle pigments

Angelo P.D., Farnood R.R., University of Toronto, CA

A jettable inkjet ink containing dispersed inorganic semiconductor (ZnS:Mn) pigments has been prepared using colloidal synthesis. This ink was deposited using an inkjet printer to form printed lines of luminescent material. Different binder polymers were [...]

Electrostatic Induced Inkjet Printing System for Micro Patterning and Drop-On-Demand Jetting Characteristics

Choi J., Kim Y., Kim Y.J., Son S.U., Kim Y., Kim Y.J., Lee S., Byun D., Ko H.S., Sungkyunkwan University, KR

Printing technology is considered to be a key technology even in the field of electronics, materials processing, and bio applications. Inkjet printing is an interesting patterning technique for electronic devices because it requires no physical [...]

Generation of picoliter and nanoliter drops on-demand in a microfluidic chip

Xu J., Attinger D., Columbia University, US

In this work, we introduce the novel technique of in-chip drop-on-demand, which consists in dispensing picoliter to nanoliter drops on demand directly in the liquid-filled channels of a polymer microfluidic chip. The technique involves a [...]

A Novel Technique for Purification and Segregation

Mangir T., Chaves J., Chaves S., Khairatkar M., Chaves J., Chaves S., California State University Long Beach, US

In paper we describe a technique to purify and segregate carbon nano tubes (CNTs) from the iron impurities to use the CNTs for thin films. After extensive research into a proper and repeatable cleaning process [...]

Piezoelectric Inkjet Print Head Technology for TFT-LCD Panel Fabrication

Chen T., Trident - an ITW company, US

Flat Panel Display (FPD) technologies have been sweeping through the market which includes TVs, desktop monitors, notebook PCs, digital cameras, portable DVD, and so forth . Among them, TFT-LCD is dominating and approaching large size [...]

Drop formation mechanisms in piezo-acoustic inkjet

Wijshoff H.M.A., Océ Technologies B.V., NL

Drops are generated with a piezo inkjet device. A piezo actuator drives each channel. Drops are measured with stroboscopic illumination or high-speed camera recordings. The phenomena inside the channels are hard to measure. Modeling give [...]

Thermally Induced Marangoni Instability of Liquid Microjets with Application to Continuous Inkjet Printing

Furlani E.P., Price B.G., Hawkins G., Lopez A.G., Eastman Kodak Co., US

Liquid microjets are inherently unstable and can be broken into droplets in a controllable fashion via thermal modulation of surface tension. Such modulation can be achieved using CMOS/MEMS technology by integrating resistive heating elements around [...]

Analysis of the Droplet Ejection for Piezoelectric-driven Industrial Inkjet Head

Sim S., Park C., Park S-J, Park C., Park S-J, Yoo Y., Kim Y., Joung J., Oh Y., Samsung Electro Mechanics Co., KR

A hybrid design tool combining one-dimensional(1D) lumped parameter model and three-dimensional(3D) computational fluid dynamics (CFD) approach has been developed and applied to industrial inkjet head design for the application of direct writing on printed circuit [...]

Free Surface Flow and Acousto-Elastic Interaction in Piezo Inkjet

Wijshoff H., Océ Technologies B.V., NL

Modeling plays an essential role in our research on new inkjet technologies. Structural modeling with Ansys includes piezo-electricity. Acoustic modeling in Ansys and Matlab involves fluid-structure interaction. CFD modeling with Flow3D includes wall-flexibility and free [...]

Liquid Disintegration: Investigation of Physics by Simulation

Zeng J., Korsmeyer T., Coventor, Inc., US

Liquid disintegration includes the processes of formation of droplets and droplet fission. It is important in inkjet printing and in the miniaturization of biochemical analytical devices. This paper reports on an investigation of the mechanism [...]