2026-09-19T12:41:46Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/1283482023-07-06T14:46:17Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Steven G. Johnson.
Yao, Wenjie(Electrical and computer science engineer)Massachusetts Institute of Technology.
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science.
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
2020-11-03T20:32:15Z
2020-11-03T20:32:15Z
2020
2020
https://hdl.handle.net/1721.1/128348
1202001376
Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, February, 2020
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 57-62).
Fundamental limits to optical responses such as absorption, scattering and local density of states (LDOS) are proposed given intrinsic material losses by Owen, etc. The absorption and scattering limits are validated in Owen's work while the LDOS of common structures fall short of the limits. To validate those theoretical limits in LDOS, comprehensive studies are conducted in the metallic cavity structures, as typical resonant cavities will produce high LDOS. A novel shape optimization method based on the adjoint method is presented in this work, several numerical methods (BEM, CGAL, etc.) and optimization methods are implemented to enable more efficient evaluation and reduce the computation costs.
by Wenjie Yao.
S.M.
S.M. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
62 pages
eng
Massachusetts Institute of Technology
MIT theses may be protected by copyright. Please reuse MIT thesis content according to the MIT Libraries Permissions Policy, which is available through the URL provided.
http://dspace.mit.edu/handle/1721.1/7582
Electrical Engineering and Computer Science.
Fundamental limits to local density of states in absorptive system
Thesis
application/pdf
2020-11-03T20:32:14Z
Publication
Master
EECS
unknown
unknown
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