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関連する概念動画

Structures of Solids02:22

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...
Metallic Solids02:37

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...
Network Covalent Solids02:18

Network Covalent Solids

Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
Lattice Centering and Coordination Number02:33

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...
Unit Cells01:18

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...
Bonding and Strength of Aggregate01:12

Bonding and Strength of Aggregate

The bond between aggregate particles and the cement matrix is significantly influenced by the shape and surface texture of the aggregates. High-strength concretes benefit from a rougher texture, which leads to stronger bonding due to greater adhesion. Angular aggregates with larger surface areas also enhance this bond. The bonding quality, however, is complex to assess as no universally accepted test exists. Good bonding is indicated when a crushed concrete specimen shows some aggregate...

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関連する実験動画

Updated: Jul 12, 2026

High-resolution Single Particle Analysis from Electron Cryo-microscopy Images Using SPHIRE
13:28

High-resolution Single Particle Analysis from Electron Cryo-microscopy Images Using SPHIRE

Published on: May 16, 2017

ブロックコポリマーは,周期的な,強い3次元的な閉じ込め下で,ブロックコポリマーです.

André C Arsenault1, David A Rider, Nicolas Tétreault

  • 1Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada.

Journal of the American Chemical Society
|July 14, 2005
PubMed
まとめ

強い3D閉じ込めの影響は,シリカテンプレートを使用してディブロックコポリマー自己組み立て. これにより,ポリフェロセニルシラン金属ポリマーの同点殻や枝分かれしたラメラなどのユニークな形状が生まれます.

さらに関連する動画

Initial 3D Cell Cluster Control in a Hybrid Gel Cube Device for Repeatable Pattern Formations
05:22

Initial 3D Cell Cluster Control in a Hybrid Gel Cube Device for Repeatable Pattern Formations

Published on: March 21, 2019

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
11:42

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers

Published on: June 20, 2019

関連する実験動画

Last Updated: Jul 12, 2026

High-resolution Single Particle Analysis from Electron Cryo-microscopy Images Using SPHIRE
13:28

High-resolution Single Particle Analysis from Electron Cryo-microscopy Images Using SPHIRE

Published on: May 16, 2017

Initial 3D Cell Cluster Control in a Hybrid Gel Cube Device for Repeatable Pattern Formations
05:22

Initial 3D Cell Cluster Control in a Hybrid Gel Cube Device for Repeatable Pattern Formations

Published on: March 21, 2019

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
11:42

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers

Published on: June 20, 2019

科学分野:

  • マテリアルサイエンス 材料科学
  • ポリマー化学のポリマー化学について
  • ナノテクノロジー ナノテクノロジー

背景:

  • ディブロックコポリマーは,自己組み立てにより,秩序あるナノ構造を形成します.
  • 金属ポリマーは,金属の組み込みによりユニークな性質を備えています.
  • 3D閉じ込めは,自己組み立ての経路を変更することができます.

研究 の 目的:

  • ディブロックコポリマーの自己組み立てに強い3D閉じ込めの効果を調査する.
  • シリカのコロイド結晶と逆コロイド結晶をテンプレートとして使用することを探求します.
  • ポリフェロセニルシランを含むディブロック共ポリマーの生じる形態論を分析する.

主な方法:

  • ナノメートルスケールの模具として,シリカのコロイド結晶と逆コロイド結晶を使用しました.
  • ポリフェロセニルシランセグメントによるディブロックコポリマーの自己組み立てを指揮した.
  • 電子顕微鏡やその他の技術を用いて,自己組み立て形態の特徴を明らかにした.

主要な成果:

  • 自己組み立てに3D閉じ込めの有意な影響が観察されました.
  • 同心状の貝殻や枝分かれしたラメラを含む異常な形状を生成した.
  • 大面積,トポロジ的に周期的なテンプレートの役割が組み立てを指揮する上で示された.

結論:

  • 強力な3D閉じ込めは,ダイブロックコポリマーの自己組み立てを根本的に変更します.
  • シリカテンプレートは,複雑で非従来のナノ構造物の形成を可能にします.
  • ポリフェロセニルシラン金属ポリマーは,トポロジカルな閉じ込めに対するユニークな反応を示します.