New lithography techniques for electrode widths of less than 60 nm are proposed. The electrodes are fabricated by using extremely thin anodic oxidation films (AOFs) as resists. 60 nm-wide electrodes were obtained by using a wet etching technique and 100 nm-wide electrodes by using a dry etching-technique. The experimental results of a 10 GHz surface acoustic wave filter with an insertion loss of 15 dB are also presented for an 80 nm-wide electrode
Published in:
Electronics Letters
(Volume:30
,
Issue:
12
)
Date of Publication: 9 Jun 1994