Tseng SC, Chen HL, Liu HW, Yu CC, Wang LA, Chen YP. A permanent optical storage medium exhibiting ultrahigh contrast, superior stability, and a broad working wavelength regime.
Phys Chem Chem Phys 2011;
13:5747-52. [PMID:
21321717 DOI:
10.1039/c0cp02289f]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper we demonstrate an optical storage medium having advantages of ultrahigh contrast, superior stability, and broadband working wavelengths. Combining a single shot of deep-ultraviolet (UV) laser illumination with a Au particle-assisted etching process, we formed broadband antireflective, one-dimensional silicon nanowire arrays (SiNWs) with selectively at specific positions. Optical measurements and three-dimensional finite-difference time domain (3D-FDTD) simulations revealed ultrahigh reflection contrast between the Au and the SiNWs for both far- and near-field regimes. Relative to typical organic-based storage media, Au films and SiNWs are more stable, both chemically and thermally; therefore, we suspect that this new storage medium would exhibit high stability toward moisture, sunshine, and elevated temperatures.
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