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Preparation of Samples for Electron Microscopy01:20

Preparation of Samples for Electron Microscopy

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To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...
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相关实验视频

Updated: Jul 23, 2025

Fabrication of Thin Film Silver/Silver Chloride Electrodes with Finely Controlled Single Layer Silver Chloride
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对于印刷的银电极,室温加工的保护层.

Chungil Kim1, Jin Ho Park2, Jaehwan Ko1

  • 1Department of Safety Engineering, Seoul National University of Science and Technology Seoul 01811 Korea hj.song@seoultech.ac.kr.

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|July 12, 2023
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概括
此摘要是机器生成的。

使用循环透明光学聚合物 (CYTOP) 的新保护层提高了印制银电极的稳定性. 这种CYTOP层可以防止降解,延长灵活的电子设备的使用寿命,而不需要高温处理.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 电气工程 电气工程
  • 表面化学 表面化学

背景情况:

  • 印刷的银电极为灵活的电子产品提供低成本,节能的电气连接.
  • 长期稳定性不佳,特别是抗化学降解,阻碍了这些电极的广泛应用.
  • 现有的保护方法往往需要耗费大量能源的热,这限制了它们在柔性基板中的使用.

研究的目的:

  • 为印制银电极开发稳定,透明的保护层,不需要热.
  • 提高灵活电子设备中印刷银电极的化学耐药性和运行寿命.
  • 为了研究一种特定的聚合物的有效性,循环透明光学聚合物 (CYTOP),作为一种保护性涂层.

主要方法:

  • 透明循环透明光学聚合物 (CYTOP) 薄膜作为低温加工印刷银电极的保护层的应用.
  • 使用加热乙酸暴露的化学稳定性测试.
  • 电阻测量,以评估性能随时间的降低.
  • 显微镜成像,以评估电极的物理完整性.

主要成果:

  • CYTOP保护层显著提高了印刷银电极对酸的化学稳定性.
  • 用CYTOP涂层的电极在被加热的酸暴露下保持了它们的初始电阻长达300小时.
  • 在相同的条件下,不受保护的电极在几个小时内降解.
  • 显微镜分析证实了CYTOP保护电极的结构完整性,防止损坏.

结论:

  • 循环透明光学聚合物 (CYTOP) 作为一个有效的,室温可加工的保护层,用于印制的银电极.
  • CYTOP涂层减轻了由氧酸引起的银的降解,大大增加了电极的寿命.
  • 这种方法使灵活的电子设备在苛刻的操作条件下能够提供可靠的性能,为先进的灵活电子设备铺平了道路.