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微机器人技术的双光子显微镜:在固定组织下方可视化微剂.

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双光子显微镜能够更深入地可视化生物组织中的微剂,克服光学显微镜的局限性. 这一进步对于微机器人研究和潜在的体内应用至关重要.

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科学领域:

  • 生物医学工程 生物医学工程
  • 光学成像技术的成像
  • 机器人技术 机器人技术 机器人技术

背景情况:

  • 光学显微镜提供高时空分辨率,但在生物组织中仅限于~100μm的透深度.
  • 在组织表面下可视化微机器人剂 (微剂) 是当前微机器人研究的一个重大挑战.
  • 双光子显微镜 (TPM) 提供更深的组织透 (>500微米) 和亚微米分辨率,在活组织成像和直接激光写作制造中具有应用.

研究的目的:

  • 引入和评估二光子显微镜作为一种新的成像技术,用于在生物组织下方可视化微剂.
  • 为了证明TPM在微机器人应用中对微剂的深层组织成像的能力.
  • 探索TPM在推进体内微机器人可视化方面的潜力.

主要方法:

  • 制造两种类型的微剂:外源性光剂染色的电纤维和自光树脂打印的生物灵感结构,使用直接激光写作 (DLW).
  • 微剂的三维重建和激光与组织相互作用的定性研究的实验设置.
  • 利用第二和生成,同时可视化微剂和周围组织.

主要成果:

  • 证明了在甲固定组织下方的微剂的双光子显微镜成像,其最大透深度为800微米.
  • 在135×135μm2视野内,以每秒1的速度实现磁性电纤维的连续成像.
  • 成功地将微剂与组织结构一起可视化,证实了TPM的实用性.

结论:

  • 双光子显微镜作为微机器人可行的替代成像方式,使微智能体的可视化超出了传统光学显微镜的局限性.
  • 该研究在体外和外卵子条件下验证了微剂成像的TPM,为更深入的组织探索铺平了道路.
  • 将TPM与微机器人集成具有未来体内应用的巨大潜力,增强微机器人系统在生物环境中的能力.