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

Oxidation-Reduction Reactions03:11

Oxidation-Reduction Reactions

75.9K
Oxidation–Reduction Reactions
75.9K
Directing Effect of Substituents: meta-Directing Groups01:09

Directing Effect of Substituents: meta-Directing Groups

6.0K
Substituents on the benzene ring that direct an incoming electrophile to undergo substitution at the meta position are called meta directors. All meta directors either have a positive charge on the atom directly bonded to the ring or a partial positive charge. These groups function by withdrawing electrons from the ring through inductive and resonance effects. Consider the carbocation intermediates formed upon the addition of an electrophile on nitrobenzene at the...
6.0K
Lumber Defects01:23

Lumber Defects

562
Lumber defects, which can affect both the appearance and structural integrity of wood, include a variety of growth and manufacturing flaws. Growth defects such as knots and knotholes occur where branches were once attached to the tree trunk, with knotholes forming when these knots fall out. Other natural defects include decay and insect damage, which compromise the wood's strength and durability.
Shakes are minor fractures that run along or across the wood's annual rings, while wane is...
562
Oxymercuration-Reduction of Alkenes02:36

Oxymercuration-Reduction of Alkenes

9.4K
Oxymercuration–reduction of alkenes is one of the major reactions converting alkenes to alcohols. It involves the hydration of alkenes with mercuric acetate in a mixture of tetrahydrofuran and water, forming an organomercury adduct. This is followed by a demercuration step in which the adduct is reduced to an alcohol using sodium borohydride.
9.4K
Block Diagram Reduction01:22

Block Diagram Reduction

574
The process of deriving the transfer function of a control system often involves reducing its block diagram to a single block. This simplification can be achieved through a series of strategic operations, including relocating branch points and comparators. These operations preserve the overall function of the system while allowing for easier manipulation and combination of blocks.
The first step in this process is the identification and relocation of a branch point. A branch point, where a...
574
Phase I Reactions: Reductive Reactions01:27

Phase I Reactions: Reductive Reactions

618
Phase I biotransformation reductive reactions are chemical processes that modify drugs by introducing or revealing polar functional groups via reduction. Enzymes called reductases catalyze these reactions, playing a pivotal role in drug metabolism by transforming lipophilic drugs into more polar, water-soluble metabolites for easy excretion. An essential type of reductive reaction is the carbonyl group reduction, where aldehydes and ketones are reduced to alcohols. An example is the...
618

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

Correction: Evaluating Academic Productivity of Hematology/Oncology Fellows.

Journal of cancer education : the official journal of the American Association for Cancer Education·2026
Same author

Evaluating the Robustness of Micro-Pillar Array Columns for Quantitative Proteomics Applications.

Journal of proteome research·2025
Same author

Evaluating Academic Productivity of Hematology/Oncology Fellows.

Journal of cancer education : the official journal of the American Association for Cancer Education·2025
Same author

Comparative Proteomic Analysis of Capillary and Micropillar Array Columns Using DIA: Insights from the TKO Yeast Standard.

Journal of proteome research·2025
Same author

GaAs gradient metasurface for vortex beam emission with high deflection angles.

Optics express·2025
Same author

Large-scale characterization of drug mechanism of action using proteome-wide thermal shift assays.

eLife·2024

関連する実験動画

Updated: Feb 13, 2026

Procedure for the Transfer of Polymer Films Onto Porous Substrates with Minimized Defects
05:02

Procedure for the Transfer of Polymer Films Onto Porous Substrates with Minimized Defects

Published on: June 22, 2019

7.1K

SiCメタ基板のHEMTエピレイヤーの欠陥軽減

Vin-Cent Su1, Ting-Yu Wei1, Meng-Hsin Chen1

  • 1Department of Electrical Engineering, National United University, Miaoli 36003, Taiwan.

Nanomaterials (Basel, Switzerland)
|February 12, 2026
PubMed
まとめ

研究者は,ガリウム窒化物 (GaN) 層の欠陥を減らすために,新しい4H-シリコン炭化物 (SiC) メタ基板を調査しました. メタ構造の幾何学を最適化することで,スレッドの離位が著しく減少し,より優れたGaN電子デバイスの道を開きました.

キーワード:
ニトリウムガリウム (GaN)高電子移動性トランジスタ (HEMT)メタストラクチャーのメタ構造です.メタサブストラットナノ構造は,ナノ構造である.炭化シリコン (SiC)

さらに関連する動画

Sputter Growth and Characterization of Metamagnetic B2-ordered FeRh Epilayers
12:20

Sputter Growth and Characterization of Metamagnetic B2-ordered FeRh Epilayers

Published on: October 5, 2013

15.1K
Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia
04:34

Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia

Published on: February 17, 2023

1.7K

関連する実験動画

Last Updated: Feb 13, 2026

Procedure for the Transfer of Polymer Films Onto Porous Substrates with Minimized Defects
05:02

Procedure for the Transfer of Polymer Films Onto Porous Substrates with Minimized Defects

Published on: June 22, 2019

7.1K
Sputter Growth and Characterization of Metamagnetic B2-ordered FeRh Epilayers
12:20

Sputter Growth and Characterization of Metamagnetic B2-ordered FeRh Epilayers

Published on: October 5, 2013

15.1K
Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia
04:34

Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia

Published on: February 17, 2023

1.7K

科学分野:

  • マテリアルサイエンス 材料科学
  • 半導体物理学 半導体物理学
  • エピタキシアル・成長

背景:

  • ニトリウムガリウム (GaN) の変位減少は,高性能の電子機器にとって非常に重要です.
  • GaNエピタキシの欠陥制御のための既存の方法は課題に直面しています.

研究 の 目的:

  • GaNエピタキシにおける変位伝播に対する表面パターン幾何学の影響を調査する.
  • 欠陥調節のための4H-シリコンカーバイド (SiC) メタ基板を幾何学的に設計する.

主な方法:

  • 4H-SiCメタ基板の製造,断片化された六角形ピラミッド構造.
  • 表面形態学を調整するためにパターンの比率 (R) の体系的な変化.
  • 分析は,原子力顕微鏡 (AFM),カトドロルミネスセント (CL),横断伝送電子顕微鏡 (TEM) を用いた.

主要な成果:

  • 比較可能な表面平らさは,異なるメタ基板幾何学で達成されています.
  • パターン比 (R) に対する欠陥密度の非単調的依存性により,最適な幾何学を示します.
  • 平面基板と比較して,54.96%のスレッド変位の減少を達成しました.
  • メタ構造地域付近で,変位屈曲と終結が観察されました.

結論:

  • 幾何学的に設計された4H-SiCメタ基板は,GaNエピタキシにおける変位調節のための効果的な戦略を提供します.
  • 開発されたメタ基板は,産業用アプリケーションのためにスケーラブルです.
  • このアプローチは,GaNベースの電源およびRFデバイスを進歩させるための有望な経路を示しています.