Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 4, Issue 12, Pages 7006-7009Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am3022569
Keywords
silver nanoparticles; high frequency conduction; GHz and sub-THz characteristics; surface roughness; antenna materials; metamaterials
Funding
- Ministry of Higher Education, Saudi Arabia
- Polish Scientific Council NCBiR [NR02-0082-10/2011]
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An enhancement in the electrical performance of low temperature screen printed silver nanoparticles (nAg) has been measured at frequencies up to 220 GHz. We show 1.6 that for frequencies above 80 GHz the electrical losses in coplanar waveguide structures fabricated using nAg at 350 degrees C 5 are lower than those found in conventional thick film Ag conductors consisting of micrometer-sized grains and fabricated at 850 degrees C. The improved electrical performance is attributed to the better packing of the silver nanoparticles resulting in lower surface roughness by a factor of 3. We discuss how the use of silver nanoparticles offers new routes to high frequency applications on temperature sensitive conformal substrates and in sub-THz metamaterials.
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