2024/5/27(一)演講公告

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上層分類：系所公告

分類：演講

建立於 2024-05-22, 週三 08:29

最近更新於 2024-05-22, 週三 08:34

發佈於：2024-05-22, 週三 08:34

點擊數：1384

演 講 人：吳台偉 博士
演講題目：Emergent Complexity in Field-Directed Assembly of Two-Dimensional Colloidal Phases and Quasicrystals

服務單位/職 稱：

中央研究院化學所/研究員兼所長

演講時間：
2024/5/27 上午10點20分-12點10分
演講地點：
工綜館203國際演講廳
演講摘要(Summary of speech)：

The directed and self-assembly of colloidal particles offer a fascinating approach to creating nanostructured materials. Effective design in this realm is contingent on a deep understanding of the underlying principles and mechanisms that drive structure formation. With this objective in mind, colloids have proven to be an exceptionally informative system for investigating the emergent structures and behaviors of large collections of simple particles. This is due to the experimentally accessible time and length scales for observing colloids, as well as our ability to manipulate interparticle interactions. Additionally, the application of electric and magnetic fields enables not only the directed assembly but also the propulsion of colloids. When confined to surfaces, colloids exhibit complex competing interactions, leading to rich and often surprising collective structures and dynamics. These phenomena can be anticipated and explained through theoretical frameworks and Monte Carlo simulation (Maestas et al., ACS Nano 2021, 15, 2399).
In this presentation, I will discuss our research integrating experiments and modeling to explore various self-assembled structures. These include 1) the spontaneous formation of "colloidal molecules" and their subsequent reactions, 2) the assembly of regular and frustrated arrays of spheres and of dimers, 3) spontaneous assembly and propulsion of chiral clusters, and 4) the formation and deformation of a novel class of bilayer quasicrystals.
The methodologies for directed assembly we discuss, such as applying normal fields and asymmetric surface confinement, are broadly applicable and largely independent of the chemical nature of the colloids. We anticipate that these strategies can be leveraged across a diverse array of material systems.

個人學經歷(Education & Research Experience)：

學歷

畢業學校	國別	主修學門系所	學位
University of California at Santa Barbara	USA	Chemical Eng. Dept.	PostDoc
University of California at Berkeley	USA	Department of Chemistry	PostDoc
University of California at Berkeley	USA	Department of Chemistry	PhD
Harvard University	USA	Department of Chemistry	A.B., Magna cum laude

經歷：

服務機關	服務部門	職稱
現職:
Academia Sinica	Institute of Chemistry	Research Fellow and Director
National Taiwan University	Department of Chemical Engineering	Joint Professor
經歷:
Colorado School of Mines	with joint appointments in Chemical and Biological Engineering & Chemistry and Geochemistry Departments	Professor
Colorado School of Mines	with joint appointments in Chemical and Biological Engineering & Chemistry and Geochemistry Departments	Associate Professor
Colorado School of Mines	with joint appointments in Chemical and Biological Engineering & Chemistry and Geochemistry Departments	Assistant Professor
Colorado School of Mines	Chemistry and Geochemistry Department	Director
Colorado School of Mines	Center for Hydrate Research	Associate Director
National Taiwan University		Visiting Professor,
National Taiwan University		Visiting Associate Research Fellow
Emile Borel Center, Institut Henri Poincaré		Invited Visiting Professor
University of Paris VII		Visiting Professor
École Supérieure de Physique et Chimie Industrielle		Visiting Professor