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相关概念视频

P-N junction01:11

P-N junction

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A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
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The Neuromuscular Junction01:19

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The nervous system consists of complex motor neuron circuits, including upper motor neurons originating from the cerebral cortex and lower motor neurons starting in the spinal cord, coordinating both voluntary and involuntary movements. Among these, somatic motor neurons activate skeletal muscles and are classified into alpha, beta, and gamma types. Alpha neurons are vital for voluntary movement coordination, while gamma neurons adjust muscle spindle sensitivity, and the function of beta...
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Anchoring Junctions01:03

Anchoring Junctions

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Anchoring junctions are multiprotein complexes that help cells connect to other cells and the extracellular matrix. Anchoring junctions are present on the lateral and basal surfaces of cells, providing strong and flexible connections. Focal adhesions are often formed due to cell interactions with the ECM substrata, which initiate signal transduction via kinase cascades and other mechanisms. Together, they provide stability and tissue integrity. There are three types of anchoring junctions:...
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Adherens Junctions01:24

Adherens Junctions

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Strong contact points between adjacent cells anchor them to each other, forming tissues. Such anchoring junctions are of two types –  adherens junctions and desmosomes. Adherens junctions are abundant in tissues such as  epithelium and endothelium, forming a continuous zone of adhesion called the adhesion belt. In other tissues, such as  heart muscle, they appear as clusters, linking the cells to produce coordinated heart muscle contraction.
Adherens Junctions are Dynamic
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Gap Junctions01:27

Gap Junctions

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The cytoplasm of adjacent animal cells can exchange small molecules, ions, and secondary messengers via the communication channels which form the gap junctions. These junctions comprise a few hundred to thousands of molecular channels, each made of two halves, called the connexon hemichannel. A connexon is a hexamer of six transmembrane connexin proteins, which assemble radially, thus forming a pore or channel in the center. One connexon hemichannel docks with a corresponding connexon on the...
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Gap Junctions01:37

Gap Junctions

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Multicellular organisms employ a variety of ways for cells to communicate with each other. Gap junctions are specialized proteins that form pores between neighboring cells in animals, connecting the cytoplasm between the two, and allowing for the exchange of molecules and ions. They are found in a wide range of invertebrate and vertebrate species, mediate numerous functions including cell differentiation and development, and are associated with numerous human diseases, including cardiac and...
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相关实验视频

Updated: Feb 5, 2026

Fabrication of a Multiplexed Artificial Cellular MicroEnvironment Array
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对CeO2纳米粒子道交叉阵列的人工调制

Jinhyoung Lee1,2, Hyeonjeong Lee1, Donghwan Choi3

  • 1School of Mechanical Engineering, Sungkyunkwan University (SKKU), Suwon-si, Gyeonggi-do 16419, South Korea.

Nano letters
|February 4, 2026
PubMed
概括

我们开发了一种用于精确控制二氧化 (CeO2) 纳米粒子的新平台,为先进的纳米设备提供可编程电子切换和可调道行为.

关键词:
在CeO2纳米粒子中.原子力显微镜的原子力显微镜.带隙调制带隙调制一个纳米粒子阵列.道的交叉点 道的交叉点

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术
  • 凝聚物质物理学 凝聚物质物理学

背景情况:

  • 对纳米颗粒的精确控制对于开发可编程纳米设备至关重要.
  • 目前的方法缺乏用于先进的功能材料系统的精度.

研究的目的:

  • 为了展示一个人造的二氧化 (CeO2) 纳米粒子调制平台.
  • 为了使区域选择性操纵和CeO2纳米粒子道化行为的可编程可调性.

主要方法:

  • 利用原子力显微镜 (AFM) 石刻技术,用于纳米级精确的CeO2纳米粒子的附着,分离和重新定位.
  • 采用了顺序应变工程来修改单个纳米粒子的电子特性.
  • 构建了垂直的3D堆叠的CeO2纳米粒子道结.

主要成果:

  • 在各种基板上实现了CeO2纳米颗粒的有序架构.
  • 通过应变工程,在单个粒子层面上证明了确定性的电子切换.
  • 在3D堆叠连接处观察到可设计的共振道和负差异阻力,在堆叠时延展值下降.

结论:

  • 人工调制平台为创建纳米电子系统提供了一种系统的方法.
  • 这项工作为人工纳米粒子组件中的功能道装置奠定了基础.
  • 在纳米尺度上实现电子属性的可编程调制性是可以实现的.