Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

1.8K
The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte...
1.8K
Lumber Defects01:23

Lumber Defects

532
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...
532
What is Genetic Engineering?00:49

What is Genetic Engineering?

80.3K
Overview
80.3K
Heat Engines01:10

Heat Engines

3.7K
A heat engine is a device used to extract heat from a source and then convert it into mechanical work used for various applications. For example, a steam engine on an old-style train can produce the work needed for driving the train.
Whenever we consider heat engines (and associated devices such as refrigerators and heat pumps), we do not use the standard sign convention for heat and work. For convenience, we assume that the symbols Qh, Qc, and W represent only the amounts of heat transferred...
3.7K
Types of RNA01:23

Types of RNA

73.0K
Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
73.0K
Pathophysiology of Cardiac Performance01:29

Pathophysiology of Cardiac Performance

1.6K
Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
1.6K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Halide Perovskite: A Rich Source of Thermal Insulator.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Cross-material catalyst discovery via deep learning.

Nature materials·2026
Same author

Tailored Bond Heterogeneity through High-Entropy Doping for Efficient Acidic Water Oxidation.

Journal of the American Chemical Society·2026
Same author

Deep learning models for acute kidney injury prediction: multi-center external validation and evaluation under simulated continuous monitoring conditions.

NPJ digital medicine·2026
Same author

Mn<sup>2+</sup>-Doped and Alloyed (CdS)<sub>13</sub> Magic-Sized Clusters as Molecular Building Blocks for Bright Self-Assembled Photocatalytic Nanostructures.

ACS nano·2026
Same author

Rejuvenation of Mechanical Fatigue Resistance in 2D Ferroelectric CuInP<sub>2</sub>S<sub>6</sub> by Reversing Ionic Motion.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same journal

Gas-Responsive Metal-Organic Frameworks for Adaptive Thermal Energy Storage with Tunable Charge-Discharge Temperatures.

Journal of the American Chemical Society·2026
Same journal

Engineering a Thiamine-Dependent Benzoylformate Decarboxylase for Stereodivergent Radical C(sp<sup>3</sup>)-C(sp<sup>3</sup>) Bond Formation.

Journal of the American Chemical Society·2026
Same journal

Accelerated Directional Proton-Coupled Electron Transfer Enabled by Intrinsic Dipole Field in Biomimetic α-Helical Structure.

Journal of the American Chemical Society·2026
Same journal

Alternating Current-Driven Hydrogen Isotope Labeling of Aliphatic Amines Using 1,3-Propanedithiol as an Efficient Hydrogen Atom Transfer Reagent.

Journal of the American Chemical Society·2026
Same journal

Two-Dimensional van der Waals Polar Metal MoOBr<sub>2</sub>.

Journal of the American Chemical Society·2026
Same journal

Negatively Curved Chiral Bilayer Nanographene.

Journal of the American Chemical Society·2026
查看所有相关文章

相关实验视频

Updated: Feb 8, 2026

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
11:07

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties

Published on: August 15, 2015

10.4K

高性能n型PbSe热电器的缺陷工程

Chongjian Zhou1, Yong Kyu Lee1, Joonil Cha1

  • 1Center for Nanoparticle Research , Institute for Basic Science (IBS) , Seoul 08826 , Republic of Korea.

Journal of the American Chemical Society
|June 30, 2018
PubMed
概括
此摘要是机器生成的。

通过引入独特的缺陷结构,化合金通过散射声子显著提高热电性能,同时保持载体的移动性. 这一战略实现了1.5的高功率 (ZT),为先进的热电材料铺平了道路.

更多相关视频

A Novel Tenorrhaphy Suture Technique with Tissue Engineered Collagen Graft to Repair Large Tendon Defects
06:36

A Novel Tenorrhaphy Suture Technique with Tissue Engineered Collagen Graft to Repair Large Tendon Defects

Published on: December 10, 2021

3.4K
A Full Skin Defect Model to Evaluate Vascularization of Biomaterials In Vivo
07:56

A Full Skin Defect Model to Evaluate Vascularization of Biomaterials In Vivo

Published on: August 28, 2014

12.9K

相关实验视频

Last Updated: Feb 8, 2026

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
11:07

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties

Published on: August 15, 2015

10.4K
A Novel Tenorrhaphy Suture Technique with Tissue Engineered Collagen Graft to Repair Large Tendon Defects
06:36

A Novel Tenorrhaphy Suture Technique with Tissue Engineered Collagen Graft to Repair Large Tendon Defects

Published on: December 10, 2021

3.4K
A Full Skin Defect Model to Evaluate Vascularization of Biomaterials In Vivo
07:56

A Full Skin Defect Model to Evaluate Vascularization of Biomaterials In Vivo

Published on: August 28, 2014

12.9K

科学领域:

  • 材料科学
  • 固态物理
  • 纳米技术

背景情况:

  • 降低晶格导热性对于热电材料至关重要,但结构缺陷往往会损害载体的移动性,从而限制整体效率.
  • 同时实现强的声子散射和高载体移动性是热电研究的一个关键挑战.
  • 缺陷工程为独立调整电气和热传输特性提供了一个有前途的途径.

研究的目的:

  • 通过将多种缺陷类型集成到-化合金中来开发高性能热电系统.
  • 研究空位,脱位和纳米沉架构对声子散射和载体移动性的影响.
  • 为了优化组合 (Pb0.95(Sb0.033□0.017) Se1-yTe y) 以提高热电功率 (ZT).

主要方法:

  • 合成Pb0.95(Sb0.033□0.017Se1-yTey合金,其Te含量不同 (y=0-0.4).
  • 整合点缺陷,空位驱动的位移和Te诱导的纳米沉.
  • 使用原子分辨率扫描传输电子显微镜进行表征,以揭示缺陷形成机制.
  • 测量导热性,载体移动性和功率因子,以评估热电性能.

主要成果:

  • 一个独特的缺陷架构结合了点缺陷,位移和纳米沉物.
  • 格子的导热率降低到大约0.4 W m-1 K-1,接近无形极限.
  • 合增加了纳米沉 (阻碍声子) 和减少了位移 (散射电子和声子),增强了电子的移动性.
  • 优化组合Pb0.95(Sb0.033□0.017) Se0.6Te0.4在823K时达到高峰ZT约1.5,与Pb0.95(Sb0.033□0.017Se (ZT~0.9) 相比显著改善.

结论:

  • 缺陷工程是独立优化热电材料中的电气和热传输的强大策略.
  • 开发的缺陷架构有效地在广泛的频率范围内分散声子,同时保持高载体流动性.
  • Pb0.95(Sb0.033□0.017) Se0.6Te0.4表现出极好的热电性能,突出了其实际应用的潜力.