Materials Science for Local Heating of Electronic Nanostructures
Abstract
The materials science behind local heating of electronic nanostructures using an alternating magnetic field will be investigated in three complementary research efforts. First, nanomagnetic thermal science will be studied by simulations and experiments. Optimized hysteresis heating will be achieved by engineering the shape anisotropy, material composition, and reversal mechanisms of magnetic nanowires. The magnetic nanowires will be synthesized by electrochemical deposition into nanoporous anodic aluminum oxide. Heating will be conducted on disperse and close packed nanowires to determine the effect of interwire interactions. Ideal pairings of magnetic nanowires and alternating magnetic fields will be determined. Second, nano solder science will be studied with a unique ability to keep tight size varianced (< +/- 1nm) nanospheres of 10-200nm diameter separated during melting for highly accurate studies of size-induced reduction of melting temperatures. The ideal pairings for local nanomagnetic thermal heating will then be applied to solder nanospheres. Third, the results from the first two efforts will be used as solder nano ball grid arrays (nBGAs) for a Nano Breadboard where nanodevices and be soldered to electrical connections for measurement. Resistivity of a wide range of nanowire devices with diameters smaller than the electron mean free paths will be measured, as well as giant magnetoresistive segmented nanowire devices. These devices will be dispersed onto the Nano Breadboard for subsequent soldering using alternating magnetic fields rather than reflow ovens. This local heating will be safer for heat sensitive devices. In addition, the Nano Breadboard promises future impact for Air Force as a ball grid array with 10-200nm nanospheres, compared to the smallest solder spheres now available which are 200um in diameter. Optional tasks for high frequency studies are included in each effort at no additional cost.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 21, 2022
- Source ID
- FA95502110273XX0
Entities
People
- Bethanie Stadler
Organizations
- Air Force Office of Scientific Research
- Regents of the University of Minnesota
- United States Air Force