In Situ Image Acquisition and Measurement of Microdroplets Based on Delay Triggering.

ABSTRACT: An in situ image acquisition apparatus based on delay triggering for visualizing microdroplets formation is described. The imaging system includes a charge-coupled device camera, a motion control card, a driving circuit, a time delay triggering circuit, and a light source. By adjusting the varying trigger delay time which is synchronized with respect to the signal for jetting, the steady sequential images of the droplet flying in free space can be captured real-time by the system. Several image processing steps are taken to measure the diameters and coordinates of the droplets. Also, the jetting speeds can be calculated according to the delay time interval. For glycerin/water (60:40, mass ratio), under the given conditions of the self-made pneumatically diaphragm-driven drop-on-demand inkj

SUBMITTER: Chang X 

PROVIDER: S-EPMC6412821 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature