Lee, HS Cheong, B Lee, TS Lee, KS Kim, WM Huh, JY 2024-01-21T05:08:35Z 2024-01-21T05:08:35Z 2021-09-03 2005-04-01 0257-8972 https://pubs.kist.re.kr/handle/201004/136554 To find its practical use in ultrahigh density optical data storage, superresolution (SR) technique needs a material that can render a high SR capability at no cost of durability against repeated read/write. Thermoelectric materials are proposed as candidates capable of yielding solid state SR effects in the absence of phase changes that are detrimental to durability. As a prototype material, PbTe is selected due to a large thermoelectric Seebeck coefficient and a high stability of a crystalline single phase state up to its melting temperature of 924 degrees C. A preliminary study of Pb51Te49 thin films was carried out with the following findings: Firstly, under exposure to pulsed light, completely reversible changes in transmittance take place regardless of power. Secondly, light transmittance grows with increasing laser power and this is not due to melting except at relatively high powers. By way of optical calculations using the measured reflectance and transmittance values combined with thermal calculations, a temperature variation of effective optical constants (n, k) was also estimated to find that both of them decrease with increasing temperature. (c) 2004 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA OXIDE LAYER DISK A semiconducting thermooptic material for potential application to super-resolution optical data storage Article 10.1016/j.surfcoat.2004.08.121 1 SURFACE & COATINGS TECHNOLOGY, v.193, no.1-3, pp.335 - 339 SURFACE & COATINGS TECHNOLOGY 193 1-3 335 339 scie scopus 000227482300063 2-s2.0-13844256216 Materials Science, Coatings & Films Physics, Applied Materials Science Physics Article; Proceedings Paper OXIDE LAYER DISK optical data storage superresolution thermoelectric thermooptic PbTe