東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

FindBook

Google Book

Amazon

博客來

Fabrication and Characterization of Nanoscale Pillar Arrays with Engineered Phononic and Photonic Properties.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Fabrication and Characterization of Nanoscale Pillar Arrays with Engineered Phononic and Photonic Properties./
作者:	Huang, Chun Yu Tammy.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
面頁冊數:	77 p.
附註:	Source: Dissertations Abstracts International, Volume: 81-09, Section: B.
Contained By:	Dissertations Abstracts International81-09B.
標題:	Acoustics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=22621860
ISBN:	9781392692066

Fabrication and Characterization of Nanoscale Pillar Arrays with Engineered Phononic and Photonic Properties.
Huang, Chun Yu Tammy.

Fabrication and Characterization of Nanoscale Pillar Arrays with Engineered Phononic and Photonic Properties. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 77 p.

Source: Dissertations Abstracts International, Volume: 81-09, Section: B.

Thesis (Ph.D.)--University of California, Riverside, 2019.

This item must not be sold to any third party vendors.

This dissertation reports the results of the investigation of nanoscale pillar structures with engineered phononic and photonic properties. It has been proven that phonon states in semiconductors can be tuned by external boundaries, either as a result of phonon confinement effects in individual nanostructures or as a result of artificially induced external periodicity, e.g., phononic crystals. The possibility of engineering acoustic phonon spectrum is of ultimate importance from scientific and application perspectives since they are the main heat carriers in nonmagnetic semiconductor and insulator materials. The change in acoustic phonon dispersion would affect the heat transport properties, alter the electron-phonon interactions, and affect the optical properties of the material system. It has been recently suggested that periodic structures with properly tuned dimensions can act simultaneously as phononic and photonic crystals, strongly affecting the light-matter interactions. In this dissertation research, I prepared nanoscale pillar structure samples and investigated their properties. The "pillar with hat" structures were fabricated using electron beam lithography on silicon substrates followed by inductively-coupled plasma cryogenic dry etching. The hats of the pillars were created with a unique design to have exactly the same orientation plane as the substrate. The structures were inspected with scanning electron microscopy. I used Brillouin-Mandelstam spectroscopy to measure the dispersion of acoustic phonons with energies in the range from 2 GHz up to 20 GHz through the entire second and higher order Brillouin zones. I analyzed the spectral signatures resulting from the surface ripple mechanism which dominates the light scattering in these specific samples. I found clear signatures of the phonon spectrum modification in the appearance of localized phonon sub-bands at energies between 2˗20 GHz. The variable angle ellipsometry measurements indicated modification of light scattering due to nanostructuring. The experimental data confirmed the dual functionality of the structure with engineered phononic-photonic properties. The results obtained in this dissertation research have important implications for the next generation of photonic and optoelectronic device technologies.

ISBN: 9781392692066Subjects--Topical Terms:

879105
Acoustics.
Subjects--Index Terms:

Brillouin-Mandelstam Spectroscopy

Fabrication and Characterization of Nanoscale Pillar Arrays with Engineered Phononic and Photonic Properties.
LDR:03578nmm a2200385 4500 001 2348031
005 20220906075147.5
008 241004s2019 ||||||||||||||||| ||eng d
020 $a 9781392692066
035 $a (MiAaPQ)AAI22621860
035 $a AAI22621860
040 $a MiAaPQ $c MiAaPQ
100 1 $a Huang, Chun Yu Tammy. $3 3687351
245 1 0 $a Fabrication and Characterization of Nanoscale Pillar Arrays with Engineered Phononic and Photonic Properties.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2019
300 $a 77 p.
500 $a Source: Dissertations Abstracts International, Volume: 81-09, Section: B.
500 $a Advisor: Balandin, Alexander A.;Kargar, Fariborz.
502 $a Thesis (Ph.D.)--University of California, Riverside, 2019.
506 $a This item must not be sold to any third party vendors.
520 $a This dissertation reports the results of the investigation of nanoscale pillar structures with engineered phononic and photonic properties. It has been proven that phonon states in semiconductors can be tuned by external boundaries, either as a result of phonon confinement effects in individual nanostructures or as a result of artificially induced external periodicity, e.g., phononic crystals. The possibility of engineering acoustic phonon spectrum is of ultimate importance from scientific and application perspectives since they are the main heat carriers in nonmagnetic semiconductor and insulator materials. The change in acoustic phonon dispersion would affect the heat transport properties, alter the electron-phonon interactions, and affect the optical properties of the material system. It has been recently suggested that periodic structures with properly tuned dimensions can act simultaneously as phononic and photonic crystals, strongly affecting the light-matter interactions. In this dissertation research, I prepared nanoscale pillar structure samples and investigated their properties. The "pillar with hat" structures were fabricated using electron beam lithography on silicon substrates followed by inductively-coupled plasma cryogenic dry etching. The hats of the pillars were created with a unique design to have exactly the same orientation plane as the substrate. The structures were inspected with scanning electron microscopy. I used Brillouin-Mandelstam spectroscopy to measure the dispersion of acoustic phonons with energies in the range from 2 GHz up to 20 GHz through the entire second and higher order Brillouin zones. I analyzed the spectral signatures resulting from the surface ripple mechanism which dominates the light scattering in these specific samples. I found clear signatures of the phonon spectrum modification in the appearance of localized phonon sub-bands at energies between 2˗20 GHz. The variable angle ellipsometry measurements indicated modification of light scattering due to nanostructuring. The experimental data confirmed the dual functionality of the structure with engineered phononic-photonic properties. The results obtained in this dissertation research have important implications for the next generation of photonic and optoelectronic device technologies.
590 $a School code: 0032.
650 4 $a Acoustics. $3 879105
650 4 $a Nanoscience. $3 587832
650 4 $a Materials science. $3 543314
653 $a Brillouin-Mandelstam Spectroscopy
653 $a Metamaterials
653 $a Nanofabrication
653 $a Nano pillars
653 $a Phononic
653 $a Photonic
690 $a 0794
690 $a 0986
690 $a 0565
710 2 $a University of California, Riverside. $b Materials Science and Engineering. $3 2094679
773 0 $t Dissertations Abstracts International $g 81-09B.
790 $a 0032
791 $a Ph.D.
792 $a 2019
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=22621860