| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Recent Advances in Functional Materials and 2D/3D Processing for Sensors and Electronic Applications
|
| Presentation Title |
Site-selective Synthesis of Core-Shell Nanowires for Nanoelectronics Assembly and Soldering |
| Author(s) |
Edward Fratto, Jirui Wang, Brendan Lucas, Hongwei Sun, Zhiyong Gu |
| On-Site Speaker (Planned) |
Edward Fratto |
| Abstract Scope |
One-dimensional nanowire structures have the potential to enable sophisticated design and integration of functional electrical components for modern electronics and devices, such as nanoelectronics, sensors, or printed electronics. However, engineering of nanostructures has been limited by associated challenges of assembly and interconnection. This work presents a core/shell multi-segment nanowire structure which achieved macroscale interconnection via magnetically-assisted assembly and soldering. Au-Ni-Au nanowires were synthesized via electrodeposition in AAO template, with Ni acting as a magnetic vehicle for assembly. Au-selective deposition of Sn was achieved via establishment of a chemisorbed Ni-protective monolayer, followed by immersing the nanowires in aqueous solution for selective chemical reduction. Core-shell formation was confirmed by SEM/TEM and EDS. These “dumbbell” shaped core/shell nanowires were assembled tip-to-tip and soldered, establishing ohmic electrical and thermal interconnection. This work provides an effective and scalable method for site-specific nanowire functionalization while simultaneously addressing miniaturization-associated assembly and packaging issues in its desired applications. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |