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Plasmonic Crystals with Unconvention...

Lubin, Steven Michael.

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Plasmonic Crystals with Unconventional Geometries.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Plasmonic Crystals with Unconventional Geometries./
作者:	Lubin, Steven Michael.
面頁冊數:	143 p.
附註:	Source: Dissertation Abstracts International, Volume: 77-02(E), Section: B.
Contained By:	Dissertation Abstracts International77-02B(E).
標題:	Nanotechnology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3724308
ISBN:	9781339077772

Plasmonic Crystals with Unconventional Geometries.
Lubin, Steven Michael.

Plasmonic Crystals with Unconventional Geometries. - 143 p.

Source: Dissertation Abstracts International, Volume: 77-02(E), Section: B.

Thesis (Ph.D.)--Northwestern University, 2015.

Plasmonic crystals (PCs) -- metallic surfaces patterned with subwavelength periodicities that couple electromagnetic waves into propagating collective electron oscillations -- can trap and manipulate light below its diffraction limit as surface plasmon polaritons (SPPs). The resonances of SPPs are controlled by the intrinsic material properties of the PC as well as its geometry. By adjusting the submicron spacing and lattice structure of PCs, the energies of coupled light can be tuned in the visible and near-infrared spectra. Most work on PC geometry has focused on periodic lattices. This thesis describes the fabrication of PCs with unconventional geometries -- quasiperiodic lattices and superlattices -- and an analysis of their plasmonic properties. First, a new parallel nanofabrication method is introduced -- moire nanolithography -- in which quasiperiodic lattices with high rotational symmetries as high as 36-fold can be fabricated with submicron spacings over macroscale areas. This technique is flexible as the geometric parameters can be tuned to design an array of quasiperiodic structures. Second, the angle-resolved plasmonic properties of high-symmetry PCs fabricated through moire nanolithography are examines. These lattices can excite SPPs over a more broadband spectrum than their periodic counterparts. Additionally, plasmonic band gaps are formed along SPP modes. An indexing system is developed that can trace the dispersion of these modes as well as predict the presence of band gaps that form between intersecting modes. Third, plasmonic superlattices -- PCs patterned with multiple periodicities over length scales of different magnitudes -- are fabricated and their plasmonic properties studied. Because of the microscale periodicity of these structures, satellite SPP modes are present in their dispersion diagram. An indexing system is developed in order to determine the dispersion of the SPPs excited along these substrates. Finally, the versatility of superlattice geometries is shown as arrays were fabricated with 1D and 2D submicron and microscale periodicities. Multiple submicron lattices were also fabricated together on the same superlattice. These studies show both parallel nanofabrication techniques and plasmonic analysis of PCs with distinctive geometries. Since these structures were fabricated on a large scale, they can be incorporated into devices in fields that take advantage of concentrated and manipulated electromagnetic waves like photovoltaics and biosensing.

ISBN: 9781339077772Subjects--Topical Terms:

526235
Nanotechnology.

Plasmonic Crystals with Unconventional Geometries.
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