High-resolution electron beam lithography (EBL) is typically used for mold fabrication, but a large-area mold is difficult to fabricate because of the low throughput of EBL.
DWMS are often difficult to fabricate, however.
However, these structures are difficult to fabricate at the nanoscale.
Ceramic components with complex geometry are difficult to fabricate.
But plutonium is far more toxic, dangerous to handle, difficult to fabricate.
And these lenses have parabolic surfaces, which can make them difficult to fabricate.
Because they require techniques like drilling nanometer-scale holes in silicon, photonic crystals can be extremely difficult to fabricate.
The diamond-structured photonic crystals are among the most difficult to fabricate, says Georgia Tech professor Zhong Lin Wang.
This has been understood for some time, but it has been difficult to fabricate such a texture.
Its mechanical properties, however, make pure iridium difficult to fabricate into small electrodes.
Also, drawing on a resist film makes it difficult to fabricate alloy structures made of multiple metals.
