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Engineering electromagnetic wave pro...

Wang, Shiyi.

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Engineering electromagnetic wave properties using subwavelength antennas structures.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Engineering electromagnetic wave properties using subwavelength antennas structures./
作者:	Wang, Shiyi.
面頁冊數:	89 p.
附註:	Source: Dissertation Abstracts International, Volume: 76-11(E), Section: B.
Contained By:	Dissertation Abstracts International76-11B(E).
標題:	Nanotechnology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3710433
ISBN:	9781321862935

Engineering electromagnetic wave properties using subwavelength antennas structures.
Wang, Shiyi.

Engineering electromagnetic wave properties using subwavelength antennas structures. - 89 p.

Source: Dissertation Abstracts International, Volume: 76-11(E), Section: B.

Thesis (Ph.D.)--University of Dayton, 2015.

With extraordinary properties, generation of complex electromagnetic field based on novel subwavelength antennas structures has attracted great attentions in many areas of modern nano science and technology, such as compact RF sensors, micro-wave receivers and nano-antenna-based optical/IR devices.

ISBN: 9781321862935Subjects--Topical Terms:

526235
Nanotechnology.

Engineering electromagnetic wave properties using subwavelength antennas structures.
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245 1 0 $a Engineering electromagnetic wave properties using subwavelength antennas structures.
300 $a 89 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-11(E), Section: B.
500 $a Adviser: Partha Banerjee.
502 $a Thesis (Ph.D.)--University of Dayton, 2015.
520 $a With extraordinary properties, generation of complex electromagnetic field based on novel subwavelength antennas structures has attracted great attentions in many areas of modern nano science and technology, such as compact RF sensors, micro-wave receivers and nano-antenna-based optical/IR devices.
520 $a This dissertation is mainly composed of two parts. For the first part, the idea of plasmonic localization in optical range is transferred and utilized for generating confined fields with high enhancement in RF range. A subwavelength modified bowtie antenna in RF range is designed for generating strong broadband field enhancement in its extended feed gap. The strongly enhanced RF field within the gap can be applied to directly modulate guided optical wave propagating in a waveguide, which enables to realize indirect RF signal sensing through photonic methods. Systematic exploration for modified bowtie antennas and its substrate effect has been given in this part.
520 $a In the second part, the RF antenna design idea is extended to infrared and optical range based on antenna scaling theory specific for this spectrum. Both transmission and reflection types of metasurface structures have been designed and proposed to obtain optical needle field with a flat-top longitudinal intensity of depth of focus 5lambda. With fine adjustment of different nano-antenna structures, both of the metasurfaces enable to generate complex vectorial field with spatial radial polarization, whose amplitude modulation range covers 0.07 to 1 with binary phase control. Then the scattered field can be tightly focused by a high numerical aperture (NA) lens in order to generate longitudinally polarized flat-top field along propagation direction. By exploring the subwavelength antennas' mechanism and connections between different frequency regions, this dissertation is expected to provide general guidance for design and characterization of next-generation subwavelength antennas structures with extraordinary electromagnetic wave properties.
590 $a School code: 0327.
650 4 $a Nanotechnology. $3 526235
650 4 $a Electrical engineering. $3 649834
650 4 $a Nanoscience. $3 587832
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650 4 $a Optics. $3 517925
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793 $a English
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