Dissertation abstract: Study on fabrication for broadband perfect absorption in the Ghz region based on metamaterials

The thesis focuses on studying MA operating in the frequency region of 2-18 GHz in 2 main approaches: Asymmetric and isotropic MA with multi-peak; broadening the absorption range by integrating conductive polymer; the content of the thesis is based on a consistent combination of theoretical models and simulation software. | 0MINISTRY OF EDUCATION AND TRAINING VIETNAM ACADEMY OF SCIENCE AND TECHNOLOGY GRADUATE UNIVERSITY OF SCIENCE AND TECHNOLOGY Đinh Hồng Tiệp STUDY ON FABRICATION FOR BROADBAND PERFECT ABSORPTION IN THE GHz REGION BASED ON METAMATERIALS MAJOR ELECTRONIC MATERIAL NUMBER DISSERTATION ABSTRACT Hanoi - 2020 1 This thesis was accomplished in Graduated University of Science and Technology Vietnam Academy of Science and Technology Supervisor Prof. Dr. Vũ Đình Lãm Peer reviewer 1 Peer reviewer 2 Peer reviewer 3 This thesis will be defended in The dissertation will be defended in front of the Institute of Doctoral Dissertation Assessment Council taking place at the Academy of Science and Technology - Vietnam Academy of Science and Technology at . hour . day . month . year 201 . This thesis will be stored in - Library of Graduated University of Science and Technology - Vietnam National Library 2 PROLOGUE 1. Necessaries of thesis In recent years advanced materials have played an important role in developing modern technologies to satisfy the emerging needs of people. Technology innovation always goes along with the integration of noble materials existing in nature or new advanced materials with artificial structures containing unprecedented properties. This motivation led to the creation of metamaterials MMs - artificial structure with electromagnetic characteristics that can not be found in. Over more than two decades from Veselago s model of theoretical prediction in 1968 MMs raised a revolution in advanced materials as well as posed many challenges to basic sciences. It is possible to change the conventional rules of interaction between matter and electromagnetic waves such as bending light path the inversion of the transmission of electromagnetic waves to the energy flow or the reverse Cherenkov radiation. These peculiar and interesting characteristics have opened up a promising prospect for material science to gradually realize expectations that exist only in .

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