US – Page 206 – TechConnect Briefs

Machine Vision System for Analysis of Drops-in-flight and Wetting Visualization

Kipman Y., ImageXpert Inc., US

An integrated, machine-vision system, JetXpert, has been developed for the visualization of faceplate wetting and the measurement of drops-in-flight. For print head wetting, the system uses a camera and light source set at an angle [...]

Inkjet Printed Devices for Armament Applications

Zunino III J.L., Schmidt D.P., Petrock A.M., Fuchs B.E., U.S. Army, US

U.S. Army Armaments Research Development and Engineering Center (ARDEC) is developing the capability to custom design, manufacture and integrate novel technologies into functional devices for the creation and advancement of active systems, including printed electronics, [...]

Drop Formation and Control of Non-Newtonian Fluid

Gao J., Ng K., Eastman Kodak Company, US

It is well known that fluid jets tend to break up into droplets of multiple sizes. However, the ability to make and control individual droplets from arrays of such jets in speed, number, and size [...]

Modeling Drop Generation at the Microscale

Hanchak M.S., Furlani E.P., Eastman Kodak Company, US

In this presentation a numerical model is described for predicting drop generation from microscale liquid jets of Newtonian fluid. The model uses a one-dimensional slender-jet approximation to obtain the equations of motion for the free-surface [...]

Manipulating Optical Properties of Luminescent Nanoparticle Substrates through Inkjet Printing

Guzan K., Sumerel J., Davis L., Hoertz P., Mills K., Magnus-Aryitey D., RTI International, US

In this work, an ink jet printer has been used to deposit patterns of photoluminescent particles onto nanofiber substrates allowing control of correlated color temperature (CCT) and color rendering index (CRI) of the resultant photoluminescent [...]

Innovative Strobe-Based Drop Analysis Equipment for Non-Contact Dispensing Systems

Kipman Y., ImageXpert Inc., US

A fully integrated machine-vision based system has been developed for visualization and measurement of drops-in-flight from non-contact dispensing tips. Unlike previously offered systems in the marketplace, this system can be used with any frequency-based jetting [...]

Optimized Surface Patterning Tools for Sub-attoliter Volume Fluid Deposition

Adams M.L., University of South Alabama, US

Micromachined cantilever-based surface patterning tools were optimized to allow submicron diameter printing of fluids on various surfaces. A detailed fluidics model was used to analyze critical variables and determine the best method for optimization. Tools [...]

Droplet actuation in PPy redox process

Tsai Y-T, Choi C-H, Yang E.H., Stevens Institute of Technology, US

A wettability switchable surface will be demonstrated to study the contact angle hysteresis of liquid droplet. Manipulation of surface wettability can be applied in the field of biomedical (cell-surface interaction) and fluids dynamics (friction reduction). [...]

Toward reliable synthesis of radiotracers for positron emission tomography in PDMS microfluidic chips: Study and optimization of the [18F] fluoride drying process

Tseng W-Y, University of California, Los Angeles, US

Positron Emission Tomography (PET) is a powerful imaging tool with high sensitivity and molecular specificity. Microfluidic systems have shown great promise for the preparation of PET tracers labeled with fluorine-18 (F-18), especially those based on [...]

Nanofluidic Channel Based Single Molecular Sensors in Polymer Substrate Fabricated by Novel Nanoimprinting Processes

Wu J., Chantiwas R., Soper S.C., Park S., Louisiana State University, US

One critical challenge in developing innovative nanochannel-based sensors for bio/chemical analyses is to build multiscale structures composed of narrow, long and continuous fluidic nanochannels and microfluidic networks at low cost. We presents a novel process [...]