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

Light as Energy01:35

Light as Energy

95.9K
The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
95.9K
Atomic Absorption Spectroscopy: Radiation and Light Sources01:13

Atomic Absorption Spectroscopy: Radiation and Light Sources

1.2K
Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
1.2K
The Wave Nature of Light02:12

The Wave Nature of Light

61.2K
The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
61.2K
Light Acquisition02:16

Light Acquisition

9.6K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
9.6K
Photoreceptors and Plant Responses to Light02:00

Photoreceptors and Plant Responses to Light

28.4K
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
28.4K
Focusing of Light in the Eye01:16

Focusing of Light in the Eye

5.8K
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
5.8K

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

Divergent temporal evolution of potentially toxic elements contamination and health risks in agricultural soils around active and decommissioned uranium mines.

Environmental geochemistry and health·2026
Same author

ECG parameters to detect cardiac involvement in Fabry disease.

BMC cardiovascular disorders·2026
Same author

Anion-Stabilized Incommensurate Modulation Enables Nonlinear Optical Response in Eu<sub>2</sub>SiO<sub>3.89</sub>N<sub>0.11</sub>.

Inorganic chemistry·2026
Same author

Gas-phase recognition by a dopamine-selective cyclic tetrapeptide in the analysis of plant extracts.

Analytical methods : advancing methods and applications·2026
Same author

Cesarean section and maternal atopy increase the risk of allergic rhinitis in offspring: a case-control study.

International journal of pediatric otorhinolaryngology·2026
Same author

Dopant-Strengthened S-Scheme Heterointerfaces in Mo-TiO<sub>2</sub>/Sb<sub>2</sub>S<sub>3</sub> Nanotubes Enable Built-In Field-Driven Charge Channels for Efficient Visible-Light Mineralization of Aromatic VOCs.

Small (Weinheim an der Bergstrasse, Germany)·2026

相关实验视频

Updated: Jan 29, 2026

Scattering And Absorption of Light in Planetary Regoliths
11:34

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

10.9K

具有可调节光传输的多带光吸收水凝,用于智能窗户.

Shirui Zhang1, Peng Zhang1, Hongyu Wen1

  • 1Faculty of Materials Science and Engineering, Yunnan Joint International Laboratory of Optoelectronic Materials and Devices, Kunming University of Science and Technology, Kunming, Yunnan 650093, P. R. China.

ACS applied materials & interfaces
|January 27, 2026
PubMed
概括

研究人员使用高转换纳米粒子 (UCNPs) 在聚合物矩阵内开发了热色智能窗口. 这些窗户有效地阻断近红外光,减少室内热量增长,提高能源效率.

关键词:
吸收NIR的NIR可以吸收.在UCNPs/PNIPAm中使用.微晶水凝是一种微晶水凝.智能窗口是一个智能窗口.上升转换的发光效应

更多相关视频

Light-mediated Formation and Patterning of Hydrogels for Cell Culture Applications
10:45

Light-mediated Formation and Patterning of Hydrogels for Cell Culture Applications

Published on: September 29, 2016

13.5K
Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source
10:32

Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source

Published on: April 23, 2021

3.2K

相关实验视频

Last Updated: Jan 29, 2026

Scattering And Absorption of Light in Planetary Regoliths
11:34

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

10.9K
Light-mediated Formation and Patterning of Hydrogels for Cell Culture Applications
10:45

Light-mediated Formation and Patterning of Hydrogels for Cell Culture Applications

Published on: September 29, 2016

13.5K
Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source
10:32

Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source

Published on: April 23, 2021

3.2K

科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术 纳米技术
  • 可持续能源 可持续能源

背景情况:

  • 热色智能窗户调节阳光以控制室内温度.
  • 现有的材料很难有效地吸收近红外 (NIR) 频谱,这是主要的热源.
  • 上转化纳米粒子 (UCNPs) 提供了增强光调制的潜力.

研究的目的:

  • 在热色智能窗户中优化NIR光调制.
  • 开发一种具有改进的太阳光谱控制的新型智能窗户材料.
  • 通过将NIR转换为可见光来增强室内亮度.

主要方法:

  • 将上转换纳米颗粒 (UCNPs) 纳入一个多N-异烯胺 (PNIPAm) 矩阵.
  • 一种微晶复合水凝的制造.
  • 测试太阳光谱调制性能和温度调节.

主要成果:

  • 在温度诱导的相位过渡时,复合水凝显示可见光传导率显著降低 (80.1%至34.7%).
  • 与标准玻璃相比,智能窗户实现了23°C的温度下降.
  • 观察到有效地阻断NIR太阳辐射.

结论:

  • UCNP-PNIPAm复合液凝为热色智能窗户提供了一种新的方法.
  • 这种材料表现出宽带太阳光谱调制和出色的耐用性.
  • 开发的智能窗户通过抑制室内温度升高来提高能源效率.