System and method for sub-wavelength detection for jetting-based additive manufacturing using a split ring resonator probe

Patent · Tue Dec 12 00:00:00 EST 2023

OSTI ID:2293978

Mukherjee, Saptarshi; Chang, Tammy

The present disclosure relates to a system for detecting and analyzing droplets of feedstock material being ejected from an additive manufacturing device. The system makes use of a split ring resonator (SRR) probe including a ring element having a gap, with the gap being positioned adjacent a path of travel of the droplets of feedstock material. An excitation signal source is used for supplying an excitation signal to the SRR probe. An analyzer analyzes signals generated by the SRR probe in response to perturbations in an electric field generated by the SRR probe as the droplets of feedstock material pass the ring element. The signals are indicative of dimensions of the droplets of feedstock material.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-07NA27344
• Assignee: Lawrence Livermore National Security, LLC (Livermore, CA)
• Patent Number(s): 11,841,220
• Application Number: 17/455,549
• OSTI ID: 2293978
• Resource Relation: Patent File Date: 11/18/2021
• Country of Publication: United States
• Language: English