Formation of Janus Nanoparticles and Liquid Crystal Interactions
Research Mentor(s)
Dr. Ying Bao
Description
One substantial challenge is how to integrate multiple asymmetric factors into a single particle and designing different types of propulsion mechanisms collectively to achieve multi-level control or coupling of the particle transport behavior. Such multifactorial asymmetry is not just interesting by itself, but also holds great promise as the basis for designing novel functional materials. In this work, we use seed-mediate growth to synthesize gold nanoparticles up to 150 nanometers and further deposit silica shell asymmetrically on the surface of gold nanoparticles to form Janus particles. With the careful control of synthetical condition, the silica shell can be formed as tailed feature and its length could be manipulated. By collaborating with University of North Texas, such Janus particles are further explored their impacts of multiple asymmetrical features—such as topography, material, and surface chemistry—on particle-induced topological defects and motions in nematic liquid crystal medium.
Document Type
Event
Start Date
May 2022
End Date
May 2022
Location
Carver Gym (Bellingham, Wash.)
Department
CSE - Chemistry
Genre/Form
student projects; posters
Type
Image
Rights
Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author’s written permission.
Language
English
Format
application/pdf
Formation of Janus Nanoparticles and Liquid Crystal Interactions
Carver Gym (Bellingham, Wash.)
One substantial challenge is how to integrate multiple asymmetric factors into a single particle and designing different types of propulsion mechanisms collectively to achieve multi-level control or coupling of the particle transport behavior. Such multifactorial asymmetry is not just interesting by itself, but also holds great promise as the basis for designing novel functional materials. In this work, we use seed-mediate growth to synthesize gold nanoparticles up to 150 nanometers and further deposit silica shell asymmetrically on the surface of gold nanoparticles to form Janus particles. With the careful control of synthetical condition, the silica shell can be formed as tailed feature and its length could be manipulated. By collaborating with University of North Texas, such Janus particles are further explored their impacts of multiple asymmetrical features—such as topography, material, and surface chemistry—on particle-induced topological defects and motions in nematic liquid crystal medium.