High-resolution, reconfigurable printing of liquid metals with three-dimensional structures

• DOI: 10.1126/sciadv.aaw2844
• Publication Date: 2019-06-21T23:15:18Z
• Authors: Young-Geun Park; Hyeon Seok An; Ju-Young Kim; Jang-Ung Park
• Keywords: Control reconfiguration; Liquid metal

We report an unconventional approach for high-resolution, reconfigurable 3D printing using liquid metals stretchable, integrations. A minimum line width of 1.9 μm can be reliably formed direct printing, and printed patterns reconfigured into diverse structures with maintaining pristine resolutions. This reconfiguration performed multiple times, it also generates a thin oxide interface that effective in preventing the spontaneous penetration gallium atoms different metal layers while preserving electrical properties under ambient conditions. Moreover, these free-standing features encapsulated conformal passivations. demonstrate applications form antenna, which is tunable by changing geometeries, reversibly movable interconnections used as mechanical switches. The structure electrodes advantageous minimizing number space between interconnections, important achieving higher integrations, demonstrated array microLEDs.