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Light Acquisition02:16

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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.
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P-N junction01:11

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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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深度学习授权选择性太阳能吸收器的设计.

Wenzhuang Ma1, Wei Chen2, Degui Li3

  • 1National Engineering Research Center of Electromagnetic Radiation Control Materials, Key Laboratory of Multi-spectral Absorbing Materials and Structures of Ministry of Education, University of Electronic Science and Technology of China, Chengdu, 611731, China.

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概括

研究人员使用深度学习和炼算法开发了一种新的选择性吸收器. 这种高性能太阳能吸收器最大限度地捕获太阳能,同时最大限度地减少热损失,为高效的太阳能热能收集铺平了道路.

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这是深度学习.metasurface 地表的表面是什么太阳能吸收器可以吸收太阳能

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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
  • 可再生能源可再生能源是可再生能源.

背景情况:

  • 选择性宽带吸收器对于太阳能应用至关重要.
  • 设计吸收器以吸收太阳光谱和最小的红外辐射是具有挑战性的.
  • 目前的设计缺乏在太阳和红外区域的快速和精确优化.

研究的目的:

  • 为选择性吸收器开发一个高性能设计范式.
  • 优化多层纳米结构,以提高太阳吸收和减少红外辐射.
  • 为了证明设计的吸收器的实际应用和节能潜力.

主要方法:

  • 结合深度学习与多目标双算法.
  • 针对特定光学特性优化多层纳米结构.
  • 实验性地制造并描述了设计的纳米结构吸收器.

主要成果:

  • 取得了特殊的太阳光谱吸收 (计算/测量 = 0.98/0.94).
  • 证明了低的平均红外辐射率 (计算/测量 = 0.08/0.19).
  • 有可能每年节省大量能源 (高达1743千瓦时/米2/年).

结论:

  • 这项研究提出了一种用于采集太阳能热能的强大设计方法.
  • 开发的吸收器在将太阳辐射转化为热量方面表现出高效率.
  • 这种方法促进了太阳能和其他工程领域的更广泛应用.