均一なサイズと方向性を持つグラフェン単体結晶の自己組み立て:最初の2D超秩序構造
Mengqi Zeng1, Lingxiang Wang1, Jinxin Liu1
1College of Chemistry and Molecular Science, Wuhan University , Wuhan 430072, P. R. China.
Journal of the American Chemical Society
|June 18, 2016
まとめ
研究者は,自己組み立てグラフェンを使用して,新しい二次元超秩序構造 (2DSOS) を開発しました. このスケーラブルな方法は,高度なエレクトロニクスとフォトニクスのための 2Dの均一でオーダーされた材料を作成します.
科学分野:
- 材料科学
- ナノテクノロジー
- 表面科学
背景:
- 高度に統合された電子,光学,マイクロ電機システムは,オーダーされた構造のための高度な製造技術を必要とします.
- 既存の方法は,精密な組織で高性能な部品を生産する上で課題に直面しています.
研究 の 目的:
- 2次元超秩序構造 (2DSOS) の合成のための新しい方法を開発する.
- 高品質のグラフェン単体結晶の自己組み立てを 秩序ある構造に示すために
- 先進的な統合システムを構築するためのこのアプローチの可能性を調査する.
主な方法:
- グラフェン結晶間の 相互の静電力を利用した
- 液体金属表面に空気流によって誘発された水力力学力を使って,指向された組み立てを行います.
- グラフェン単一結晶を用いて二次元超秩序構造 (2DSOS) を合成した.
主要な成果:
- 2次元超秩序構造 (2DSOS) を初めて合成しました.
- 調整可能な周期性,均一なサイズ,並べられた結晶の一貫した方向性を達成します.
- グラフェンの構成要素の固有の性質が保たれています
結論:
- 提示された自己組み立て方法はシンプルで,スケーラブルであり,調整可能な機能サイズを可能にします.
- このアプローチは2Dの原子結晶の正確な組み立てのための新しい経路を提供します.
- 構造的に派生した統合システムにおける2D原子結晶の適用を容易にする.
関連する概念動画
Structures of Solids
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
Ionic Crystal Structures
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Metallic Solids
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
Lattice Centering and Coordination Number
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
Types of Unit Cells
Imagine taking a large number of identical...
Unit Cells
A crystal's internal structure is an orderly array of atoms, ions, or molecules, and the details of this array significantly influence the solid's properties. In a crystal, periodically repeating 'structural motifs' - which could be atoms, molecules, or groups thereof - create a 'space lattice.' This is essentially a three-dimensional, infinite array of points, each surrounded by its neighbors in an identical way, forming the basic structure of the crystal.A 'unit cell' is a theoretical...
The Seven Crystal Systems: Overview
Crystals with various point group symmetries belong to different crystal classes, which are synonymous terms. Despite being in the same class, crystals may have distinct shapes, like cubes and octahedra. There are 32 three-dimensional point groups, all of which are systematically divided into seven crystal systems.The basic cubic crystal system, exemplified by NaCl, features orthogonal vectors (α = β = �� = 90°) of equal lengths (a = b = c). When specific requirements are not imposed on the...


