Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Polymer Classification: Crystallinity01:21

Polymer Classification: Crystallinity

4.1K
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
4.1K
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

6.1K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
6.1K
Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

815
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
815
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

48.7K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
48.7K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

31.0K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
31.0K

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Determination of Streptococcus gordonii novel adhesins specific to sialidase-treated erythrocytes.

Journal of oral biosciences·2025
Same author

Prognostic significance of age at diagnosis and preceding infection varies across age groups in childhood immune thrombocytopenia.

International journal of hematology·2025
Same author

Remote sensing and image analysis of macro-plastic litter: A review.

Marine pollution bulletin·2025
Same author

Surgical Strategy for Preserving Native Mitral Valves in Infants With Ventricular Septal Defects and Mitral Regurgitation.

World journal for pediatric & congenital heart surgery·2025
Same author

3D reconstruction of typhoon Trami 2018 eye and eyewall clouds from airborne imaging.

Scientific reports·2025
Same author

Quantifying contaminant concentration in mixed water systems using spectro-polarimetric measurement.

Journal of contaminant hydrology·2025

関連する実験動画

Updated: Feb 17, 2026

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
10:40

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

8.7K

プラスチック結晶のフリースタンドポリクリスタリンフィルムにおけるフェロ電気とピエゾ電気

Jun Harada1, Naho Yoneyama1, Seiya Yokokura1

  • 1Department of Chemistry, Faculty of Science, and ‡Graduate School of Chemical Sciences and Engineering, Hokkaido University , Sapporo 060-0810, Japan.

Journal of the American Chemical Society
|December 12, 2017
PubMed
まとめ

研究者は新しいプラスチック/鉄電離結晶を開発した. これらの可塑性のある材料は 容易に加工可能なフィルムを形成し,新しい用途を可能にします.

さらに関連する動画

Characterization of Full Set Material Constants and Their Temperature Dependence for Piezoelectric Materials Using Resonant Ultrasound Spectroscopy
07:44

Characterization of Full Set Material Constants and Their Temperature Dependence for Piezoelectric Materials Using Resonant Ultrasound Spectroscopy

Published on: April 27, 2016

10.1K
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

9.3K

関連する実験動画

Last Updated: Feb 17, 2026

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
10:40

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

8.7K
Characterization of Full Set Material Constants and Their Temperature Dependence for Piezoelectric Materials Using Resonant Ultrasound Spectroscopy
07:44

Characterization of Full Set Material Constants and Their Temperature Dependence for Piezoelectric Materials Using Resonant Ultrasound Spectroscopy

Published on: April 27, 2016

10.1K
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

9.3K

科学分野:

  • 材料科学
  • 固体化学
  • クリスタルグラフィー

背景:

  • プラスチックの結晶は,しばしば球状で,立方対称性があり,多軸性鉄電性を可能にします.
  • これは,偏振軸の調整を特定の方向に制限する従来の鉄電学と対照的です.
  • プラスチック結晶の特徴の一つは 柔軟性です

研究 の 目的:

  • 新しいプラスチック/鉄電離結晶を合成する.
  • 機能的なフィルムを作るためのこれらの材料の可能性を調査する.
  • 室温でその鉄電性とピエゾ電性の性質を 探求するためです

主な方法:

  • テトラメチルアモニウムテトラクロフェラート (III) とテトラメチルアモニウムブロモトリヒクロフェラート (III) の合成
  • 粉末のサンプルを圧縮することによって,自由で半透明なフィルムを製造する.
  • 鉄電極化スイッチングとピエゾ電気反応の特徴

主要な成果:

  • 新しいプラスチック/鉄電離結晶の合成に成功しました.
  • プレッシングによる多結晶膜の容易な製造を証明した.
  • 室温で観測された鉄電極化スイッチと有意なピエゾ電気反応.

結論:

  • プラスチック/鉄電性イオン結晶は,可塑性および鉄電性を含む特性のユニークな組み合わせを提供します.
  • フィルム形成の容易さは,それらの実用的な有用性を強調します.
  • プラスチック結晶の化学的多様性は,機能的な材料における幅広い応用可能性を示唆しています.