Related Experiment Video
Updated: Jan 22, 2026

Picoinjection of Microfluidic Drops Without Metal Electrodes
Published on: April 18, 2014
A High Temperature Drop-On-Demand Droplet Generator for Metallic Melts
Saeedeh Imani Moqadam1,2, Lutz Mädler1,2, Nils Ellendt3,4
1Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359 Bremen, Germany.
Abstract:
In this study we present the design and functionality of a pneumatic drop-on-demand droplet generator that produces metallic micro particles with a size range of 300 µm to 1350 µm at high temperatures of up to 1600 °C. Molten metal droplets were generated from an EN 1.3505 (AISI 52100) steel which solidified during a falling distance of 6.5 m. We analyzed the resulting particle size and morphology using static image analysis. Furthermore, the droplet formation mode was analyzed using high-speed recordings and the pressure oscillation was measured in the crucible. The system is meant to be reproducible in all aspects and therefore the in-situ measurements are set to control the droplet size and trajectory during the run. Additionally, the ex-situ measurements are done on the particles in order to characterize them in size and morphology aspects.
Related Concept Videos
Phase Transitions: Melting and Freezing
Alkali Metals
Table 1: Properties of the alkali metals
Metallic Solids
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
Bonding in Metals
Properties of Transition Metals
Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...

