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Nanoscale features as small as 65 +/- 5 nm have been formed reproducibly by using 520 nm femtosecond pulsed excitation of a 4,4'-bis(di-n-butylamino)biphenyl chromophore to initiate crosslinking in a triacrylate blend. Dosimetry studies of the photoinduced polymerization were performed on chromophores with sizable two-photon absorption cross-sections at 520(More)
We have fabricated diamond-like silicon photonic crystals through a sequential silica/silicon chemical vapor deposition (CVD) process from the corresponding polymer templates photopatterned by holographic lithography. Core-shell morphology is revealed due to the partial backfilling of the interstitial pores. To model the shell formation and investigate its(More)
This paper first outlines the theory of the millimetre wave circular waveguide antenna, then proposed two method which are Lens method and the method of bulging the wall of the centre circular waveguide. Based on the simulation and experimental results, summarized their advantages and disadvantages, ultimately, Proposed an effective, practical broadening(More)
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