...C. Leigh Herran; Wei Wang; Yong Huang; Vladimir Mironov; Roger Markwald Microspheres or droplets are increasingly finding various biomedical applications as drug microspheres and multicellular spheroids. Single nozzle-based continuous jetting with the help of acoustic excitation and/or carrier...

... array of liquid horn structures, which make up the ejection nozzles. Unique to this new printing technique are the high frequency of operation, use of fluid cavity resonances to assist ejection, and acoustic wave focusing to generate the pressure gradient required to form and eject droplets. We present...

... in particular that has experienced an increase in use in the biomedical and aerospace industries is titanium—due largely to its high strength to weight ratio and corrosion resistance. In this paper, surface preparation of a titanium alloy using waterjet and the water-air jet nozzles at pressures up to 600 MPa...

...Xavier F. Brun; Shreyes N. Melkote This paper presents the modeling and prediction of the air flow, pressure, and holding (or lifting) force produced by a noncontact Bernoulli gripper, which is essentially a radial air flow nozzle used to handle small and large rigid and nonrigid materials...

... the insulation block between the print head and the actuator. From a practical point of view, the molten metal DoD inkjet system presents a simple structure for easily interchangeable nozzle parts, even though the nozzle is choked. The gap adjustable molten metal DoD inkjet system with cone-shaped piston head...

... are based on the cell composite extrusion and deposition technique. So, the design of cell extrusion nozzle turns into an important phase, and the rheological properties of cell-hydrogel composites act as a key parameter and must be well investigated. In this paper, an entrance pressure detection device...

...Lin Yang; Rajiv Shivpuri Lubricants in hot forging are applied to the heated die surface by spraying dilute water based graphite suspensions through high-pressure nozzles. To avoid undesirable steam formation, these lubricant droplets need to completely dry before deformation begins. This paper...

...Heng Pan; Todd Sparks; Yogesh D. Thakar; Frank Liou The quality and efficiency of laser-aided direct metal deposition largely depends on the powder stream structure below the nozzle. Numerical modeling of the powder concentration distribution is complex due to the complex phenomena involved...

... the problem of line and nozzle clogging, which would be magnified by the higher operating pressures and the use of smaller nozzles for fine-beam systems. Simulation studies show that currently recommended means of avoiding this problem may not be adequate. Using the tools developed for this study, more...

...Kai Chen; Y. Lawrence Yao; Vijay Modi Laser machining efficiency and quality are closely related to gas pressure, nozzle geometry, and standoff distance. Modeling studies of laser machining rarely incorporate gas effects in part because of the complex structure and turbulent nature of jet flow...