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相关概念视频

Electrical Power01:07

Electrical Power

3.8K
Electric power is the product of current and voltage, represented in units of joules per second, or watts. For example, cars often have one or more auxiliary power outlets with which you can charge a cell phone or other electronic devices. These outlets may be rated at 20 amps and 12 volts, so that the circuit can deliver a maximum power of 240 watts. Consider a 25 Watt bulb and a 60 Watt bulb. The conversion of electrical energy produces heat and light, while the kinetic energy lost by the...
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Electric Generator: Alternator01:25

Electric Generator: Alternator

3.5K
Electric generators induce an emf by rotating a coil in a magnetic field. A simple alternator is an AC generator that creates electrical energy that varies sinusoidally with time. A simple alternator consists of a conducting loop that is placed inside a uniform magnetic field. The loop is connected to split rings connected to the external circuit with the help of brushes.
The magnetic flux passing through the coil varies sinusoidally as the loop rotates inside the magnetic field. This...
3.5K
Nuclear Power02:36

Nuclear Power

9.5K
Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
9.5K
Common Ion Effect03:24

Common Ion Effect

47.1K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
47.1K
ATP Driven Pumps III: V-type Pumps01:30

ATP Driven Pumps III: V-type Pumps

4.9K
V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of a few specialized eukaryotic cells, and some prokaryotes. They are also known as the V1Vo-ATPase, that couple ATP hydrolysis to transport protons against a concentration gradient.
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
4.9K
ATP Driven Pumps II: P-type Pumps01:34

ATP Driven Pumps II: P-type Pumps

6.5K
The P-type pumps are a large family of integral membrane transporter ATPases. They are divided into five major types based on substrate specificity, from I to V.
A typical P-type pump has three cytosolic domains: nucleotide-binding (N), phosphorylation (P), and activator (A) domains. These domains are connected to the membrane-spanning helices by short amino acid segments. ATP hydrolysis and covalent phosphoenzyme intermediate formation are crucial parts of the catalytic cycle. At the highly...
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相关实验视频

Updated: Feb 13, 2026

Electric and Magnetic Field Devices for Stimulation of Biological Tissues
13:29

Electric and Magnetic Field Devices for Stimulation of Biological Tissues

Published on: May 15, 2021

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嵌入式离子 节电离子水凝发电机用于自动电动刺激.

Xiaodan Yang1,2, Yi Zheng1,2, Ying Hong3

  • 1Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China.

ACS applied materials & interfaces
|February 12, 2026
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种新的人工离子 (AIP) 水凝,其扭曲性降低,显著增强了用于改进传感器和医疗器械的压离子效应. 这一创新增强了电压响应,并使有效的神经调节成为可能.

关键词:
电刺激是一种电刺激.能源发电机 发电机是一种能源发电机.离子运输 离子运输 离子运输压电效应是一种压电效应.皮埃佐基凝是一种凝.

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Mechanical Stimulation of Chondrocyte-agarose Hydrogels
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相关实验视频

Last Updated: Feb 13, 2026

Electric and Magnetic Field Devices for Stimulation of Biological Tissues
13:29

Electric and Magnetic Field Devices for Stimulation of Biological Tissues

Published on: May 15, 2021

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Mechanical Stimulation of Chondrocyte-agarose Hydrogels
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Programmed Electrical Stimulation in Mice
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Programmed Electrical Stimulation in Mice

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科学领域:

  • 材料科学 材料科学 材料科学
  • 生物医学工程 生物医学工程
  • 软机器人软机器人 软机器人软机器人

背景情况:

  • 压离子水凝结合了生物和电子功能,但遭受了低电压响应.
  • 了解机械微观结构和定向离子传输之间的联系对于推进水凝电子技术至关重要.

研究的目的:

  • 分析结构特征如何影响皮埃索离子水凝的电响应.
  • 引入和应用"扭曲性"的概念,以优化水凝性能.
  • 开发一种先进的人工离子 (AIP) 液凝,具有增强的压离子特性.

主要方法:

  • 对电响应的结构影响的系统分析.
  • 引入"扭曲性"作为一个关键的物质性质.
  • 开发了一种具有修改表面极性和对齐多孔结构的AIP水凝.
  • 离子运输路径和机械变形的表征.

主要成果:

  • 该AIP水凝表现出明显降低的扭曲度 (35%),使得有序的离子运输和提高效率.
  • 不同类型的变形性和对齐的多孔结构在变形过程中放大了应力度.
  • 与未经优化版本相比,开发的AIP水凝显示其压离子系数增加了20倍以上.
  • 在小鼠中证明了成功的外周神经调节,与生理节奏同步.

结论:

  • 通过扭曲性概念,在压离子材料中建立了明确的结构-性能相关性.
  • AIP水凝为植入式设备中的自动供电传感和电刺激提供了一个有前途的平台.
  • 突出了先进医疗器械的潜力,将传感,能量收集和治疗功能整合在一起.