奈米柱誘導式生成樹枝狀碎形結構之製程方法與數值模擬之研究

Investigation of Dendritic Patterns Formation through Nanopost-Guided Organization: Experiment, and Numerical Simulation

許又仁(Hsu, You Ren)

指導教授 ： 陳致真

國立清華大學/工學院/奈米工程與微系統研究所/博士(2016年)

摘要

本文的研究內容可以分為兩個部分。這一個部份我們透過實驗的方法發展出一個有效率製作樹枝狀結構的方法。我們發現奈米柱陣列的結構安排可以形成一個被動式的元件，讓樹枝狀結構的分枝自主裝的過程中產生改變。一般而言製造奈米結構的製作有相當的難度，都需要昂貴的設備。在我們的系統中，我們發現奈米柱的結構安排可以影響一個微米級樹枝狀結構的分支角度分布，且在一個很短的時間就可以完成生成。在材料的選擇上，因無機鹽類低成本，容易取得，因而成為我們實驗製程上的材料選擇。
第二個部分我們透過數值模擬的方法，探討奈米柱在樹枝狀結構，於自組裝生成過程扮演的腳色。在製造策略上，大致可以分為被動式以及主動式誘導的策略。我們透過數值模擬的方法，呈現兩種策略對應在奈米柱陣列的設計方法，並呈現相關的結果進行討論，希望可以在工程上產生基礎，突破既有的自組裝結構生成的策略，提供另一個誘導結構生成的方法。

關鍵字

樹枝狀結構 ； 奈米柱陣列

並列摘要

This thesis can be concluded in two parts. In the first part, we use experiments to

explore how to use an efficient way to fabricate dendritic structure. In this article, we

found through nanopost arrays arrangement can develop a passive component to

induce the branching distribution of self-organization dendritic inorganic salt

structures. It needs expensive equipment to work on these nanostructures related

topics because fabrication process is difficult. We found the structure arrangement in

nanopost array can affect the branching angle distribution in micro-scale dendritic

structure and in a very short time without complicated environment control. In our

experiment, we chose inorganic salt to create the DP because inorganic salt is

low-cost, and easy to be obtained.

The second part of this thesis, we use an independent numerical simulation

research to study how to use precursor passive geometric structure or active induction

to affect the formation process of dendritic structure. Microstructure formation can be

mainly categorized in two ways: (1) active: such as using electric field to control the

arrangement of molecules (using external force to change the morphology of

molecules or material; (2) passive: material structure forms through pre-designed

components. On the issue of engineering, the most difficult part of self-organization

structure in fabrication is there are only limited strategies can be utilized in the

fabrication control.We hope we can propose another strategy to modify this process through appropriate artificial disturbance

並列關鍵字

Dendritic Patterns ； Nanopost

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