Nanomaterials for 3D and functional printing

Shlomo Magdassi, Chemistry, The Hebrew University, Jerusalem, Israel

Nanomaterials have unique properties which enables their utilization in functional printing and coatings.

Our research is focused on developing methods for preparation and formulations of metal nanoparticles, and utilization of these materials as “inks” for printed electronics applications.

The formation and application of conductive inkjet inks composed of silver, copper CNT’s and copper@silver will be reported. These inks address a major challenge in fabrication of plastic electronics devices, the printing at sufficiently low temperatures which will not damage the polymeric substrates. Our recent discoveries of several routes for achieving high conductivity even at room temperature will we discussed. These methods are based on various concepts of colloid and interface chemistry, such as coalescence and wetting processes that are observed in “coffee ring effect”. While combining the low sintering temperatures concepts with self assembly processes, we fabricate transparent conductive films that are suitable for optoelectronic devices (such as smartphone touchscreens) and 3D conductive structures. Some applications will be demonstrated in the fields of  inkjet printed smart windows, paper RFID antennas, touch screens, light sensors and plastic electroluminescent devices.

 

Literature:

1. M. Grouchko, P. Roitman, X. Zhu, I. Popov, A. Kamyshny, H. Su, S. Magdassi, Nature Communications,5, 2994, (2014).   doi:10.1038/ncomms3994

2. Y. Farraj,   M. Grouchkoa ,  S. Magdassi  Chem. Commun., DOI:10.1039/C4CC08749F

3. M. Layani, R. Berman, S. Magdassi , ACS Applied Materials & Interfaces, 6 , 18668–18672, (2014),