中国物理B ›› 2014, Vol. 23 ›› Issue (9): 90601-090601.doi: 10.1088/1674-1056/23/9/090601
邓晓a, 李同保a, 雷李华a b, 马艳a, 马蕊a, 翁浚婧a b, 李源b
Deng Xiao (邓晓)a, Li Tong-Bao (李同保)a, Lei Li-Hua (雷李华)a b, Ma Yan (马艳)a, Ma Rui (马蕊)a, Weng Jun-Jing (翁浚婧)a b, Li Yuan (李源)b
摘要: Atom lithography with chromium can be utilized to fabricate a pitch standard,which is directly traceable to the wavelength of the laser standing waves. The result of a calibrated commercial AFM measurement demonstrates that the pitch standard is (212.8± 0.1) nm with a peak-to-valley-height (PTVH) better than 20 nm. The measurement results show the high period accuracy of traceability with the standing laser wavelength (λ/2=212.78 nm). The Cr nano-grating covers a 1000 μm×500 μm area, with a PTVH better than 10 nm. The feature width broadening of the Cr nanostructure has been experimentally observed along the direction of the standing waves. The PTVH along the Gaussian laser direction is similar to a Gaussian distribution. Highly uniform periodic nanostructures with a big area at the millimeter scale, and the surface growth uniformity of the Cr nano-grating, show its great potential in the application of a traceable pitch standard at trans-scales.
中图分类号: (Standards and calibration)