相关实验视频
Updated: Jun 2, 2025

10:34
Ligand Nano-cluster Arrays in a Supported Lipid Bilayer
Published on: April 23, 2017
6.9K
两个维的方格格子由由静电吸附在狭窄空间中形成的体粒子组成
Yurina Aoyama1, Akiko Toyotama1, Tohru Okuzono1
1Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe, Mizuho, Nagoya 467-8603, Aichi, Japan.
Langmuir : the ACS journal of surfaces and colloids
|January 15, 2025
概括
研究人员开发了一种新方法,用于创建具有方格格子的2D合晶体,这对于光子学至关重要. 该技术使用pH控制的3D晶体吸附到修饰表面,以精确的结构形成.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 晶体学 晶体学是指结晶学.
背景情况:
- 二维 (2D) 合晶体对于光子和等离子应用至关重要.
- 之前的工作集中在由面中心立方 (FCC) 晶体形成的三角格子上.
- 方格格子2D晶体是非常理想的,但很难高效地制造.
研究的目的:
- 开发一种高效的制造方法,用于非密封的2D合晶体,具有正方形格子结构.
- 为了探索复杂的3D结构的合成使用这些2D正方形格子.
- 通过新的晶体制造,使先进的光子和等离子装置成为可能.
主要方法:
- 在狭窄的空间中制造具有四重对称性的3D合晶体.
- 用aminopropyltriethoxysilane对玻璃基板进行修改,以适应pH的表面电荷.
- 控制下降pH值以诱导静电吸附和形成2D方格格子.
- 交替组装二氧化和聚烯层,以创建立体中心立方体 (BCC) 的三维结构.
主要成果:
- 成功合成了带有正方形格子排列的非密封的2D合晶体.
- 证明了pH受控的吸附,用于精确的网格形成.
- 通过堆叠2D正方形格子来构建三层BCC结构.
- 通过折射率匹配,实现了模仿简单立方格的光学特性.
结论:
- 已经建立了一种新且高效的制造二维方格格子合晶体的方法.
- 开发的技术允许创建具有可调节属性的复杂3D结构.
- 这些发现为光子学和等离子学的先进应用铺平了道路.
相关概念视频
Colloidal precipitates
500
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
500
Lattice Centering and Coordination Number
9.5K
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...
9.5K
Ionic Crystal Structures
14.1K
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...
14.1K
Structures of Solids
14.0K
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...
14.0K
Metallic Solids
18.2K
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....
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
18.2K
Colloids
17.3K
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
17.3K

