Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/23126
Title: Subwavelength structures induced by laser direct writing and applications for data storage devices
Authors: WANG WEIJIE
Keywords: laser direct writing, optical near-field, self-assembly, nanostructure, non-volatile memory phase change memory
Issue Date: 12-Mar-2007
Source: WANG WEIJIE (2007-03-12). Subwavelength structures induced by laser direct writing and applications for data storage devices. ScholarBank@NUS Repository.
Abstract: Two kinds of laser direct writing techniques were developed for the fabrication of nanostructures, and their applications in high density data storage were explored. The first technique is laser-induced nanostructure self-organization, which is based on the intrinsic laser-material interactions. Although this technique is suitable for the formation of large scale nanostructures, its lack of precise position registration and alignment capability makes it unsuitable for device fabrication. The second a mix-and-match technique which combines the conventional photolithography with the laser direct writing using a femtosecond laser and near-field optics. The developed technology was applied to the nanocell fabrication of non-volatile phase change random access memory, with a feature size far below the optical diffraction limit. The functionality of nanocell was demonstrated successfully, and the scalability of programming current and fast switching were evaluated. A theoretical model was proposed to explain the fast switching phenomenon, which will be of great importance for developing fast-response phase change memories.
URI: http://scholarbank.nus.edu.sg/handle/10635/23126
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
PhD thesis_Wang Weijie_ECE_final e-submission.PDF7.28 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

168
checked on Dec 11, 2017

Download(s)

226
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.