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Colloidal Particle Assembly and Electrochromic Thin Film Application.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Colloidal Particle Assembly and Electrochromic Thin Film Application./
作者:	Tsyrenova, Ayuna.
面頁冊數:	1 online resource (84 pages)
附註:	Source: Dissertations Abstracts International, Volume: 83-12, Section: B.
Contained By:	Dissertations Abstracts International83-12B.
標題:	Nanoscience. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28965539click for full text (PQDT)
ISBN:	9798819395929

Colloidal Particle Assembly and Electrochromic Thin Film Application.
Tsyrenova, Ayuna.

Colloidal Particle Assembly and Electrochromic Thin Film Application. - 1 online resource (84 pages)

Source: Dissertations Abstracts International, Volume: 83-12, Section: B.

Thesis (Ph.D.)--Iowa State University, 2022.

Includes bibliographical references

The controlled assembly of colloidal building blocks offers great potential in developing functional materials for different technological applications. Assembly strategies and design of complex micro-and nanostructures are built on understanding the colloidal interactions. In this dissertation, interactions of cluster and two-dimensional (2D) crystal assembly of amphiphilic Janus particles were modulated via the addition of surfactants and ionic liquids. Varying the coating thickness of Au-coated particles revealed a significant role of van der Waals force in the assembly of Au-coated particles when added surfactant suppressed the hydrophobic attraction. Rotational dynamics of Janus particles in the 2D crystal were slowed down by adding a non-ionic surfactant, Tween20, and accelerated by an anionic surfactant, sodium dodecyl sulfate (SDS). A new assembly structure induced by ionic liquids was discovered and carefully examined. The amphiphilicity contrast between the two sides of Janus particles and chemical structure of ionic liquid governed assembly. Results suggest that the unique orientation of the amphiphilic boundary of Janus particle is due to the interplay of electrostatic, hydrogen bonding, and hydrophobic interactions. Particle tracking image analysis was employed to analyze the orientation and dynamics of particles.Knowledge of colloidal assembly strategies and interactions were utilized to enhance the properties of a functional nanocrystal film through formulation. In this approach, various organic solvents with different polarities lead to different film morphology. It was demonstrated that ligand-coated NCs aggregated in polar solvents and formed a clear transparent film with a crack free structure. NCs film produced with a non-polar formulation showed significant haziness and an interconnected crack network structure. The optically clear electrochromic film with efficient optical modulation was achieved by suppressing haziness.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798819395929Subjects--Topical Terms:

587832
Nanoscience.
Subjects--Index Terms:

AssemblyIndex Terms--Genre/Form:

542853
Electronic books.

Colloidal Particle Assembly and Electrochromic Thin Film Application.
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245 1 0 $a Colloidal Particle Assembly and Electrochromic Thin Film Application.
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504 $a Includes bibliographical references
520 $a The controlled assembly of colloidal building blocks offers great potential in developing functional materials for different technological applications. Assembly strategies and design of complex micro-and nanostructures are built on understanding the colloidal interactions. In this dissertation, interactions of cluster and two-dimensional (2D) crystal assembly of amphiphilic Janus particles were modulated via the addition of surfactants and ionic liquids. Varying the coating thickness of Au-coated particles revealed a significant role of van der Waals force in the assembly of Au-coated particles when added surfactant suppressed the hydrophobic attraction. Rotational dynamics of Janus particles in the 2D crystal were slowed down by adding a non-ionic surfactant, Tween20, and accelerated by an anionic surfactant, sodium dodecyl sulfate (SDS). A new assembly structure induced by ionic liquids was discovered and carefully examined. The amphiphilicity contrast between the two sides of Janus particles and chemical structure of ionic liquid governed assembly. Results suggest that the unique orientation of the amphiphilic boundary of Janus particle is due to the interplay of electrostatic, hydrogen bonding, and hydrophobic interactions. Particle tracking image analysis was employed to analyze the orientation and dynamics of particles.Knowledge of colloidal assembly strategies and interactions were utilized to enhance the properties of a functional nanocrystal film through formulation. In this approach, various organic solvents with different polarities lead to different film morphology. It was demonstrated that ligand-coated NCs aggregated in polar solvents and formed a clear transparent film with a crack free structure. NCs film produced with a non-polar formulation showed significant haziness and an interconnected crack network structure. The optically clear electrochromic film with efficient optical modulation was achieved by suppressing haziness.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
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650 4 $a Engineering. $3 586835
650 4 $a Materials science. $3 543314
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653 $a Electrochromic films
653 $a Transparent films
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710 2 $a Iowa State University. $b Materials Science and Engineering. $3 1025701
773 0 $t Dissertations Abstracts International $g 83-12B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28965539 $z click for full text (PQDT)