• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Microscopy >Non-optical bimorph-based tapping-mode force sensing method for scanning near-field optical microscopy.
【24h】

Non-optical bimorph-based tapping-mode force sensing method for scanning near-field optical microscopy.

机译：基于非光学双压电晶片的轻敲模式力传感方法，用于扫描近场光学显微镜。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A non-optical bimorph-based tapping-mode force sensing method for tip-sample distance control in scanning near-field optical microscopy is developed. Tapping-mode force sensing is accomplished by use of a suitable piezoelectric bimorph cantilever, attaching an optical fibre tip to the extremity of the cantilever free end and fixing the guiding portion of the fibre to a stationary part near the tip to decouple it from the cantilever. This method is mainly characterized by the use of a bimorph, which carries out simultaneous excitation and detection of mechanical vibration at its resonance frequency owing to piezoelectric and anti-piezoelectric effects, resulting in simplicity, compactness, ease of implementation and lack of parasitic optical background. In conjugation with a commercially available SPM controller, tapping-mode images of various samples, such as gratings, human breast adenocarcinoma cells, red blood cells and a close-packed layer of 220-nm polystyrene spheres, have been obtained. Furthermore, topographic and near-field optical images of a layer of polystyrene spheres have also been taken simultaneously. The results suggest that the tapping-mode set-up described here is reliable and sensitive, and shows promise for biological applications.
机译：提出了一种基于光学双态的轻敲模式力传感方法，用于扫描近场光学显微镜中的尖端样本距离控制。通过使用合适的压电双压电晶片悬臂，将光纤尖端连接到悬臂自由端的末端，并将光纤的引导部分固定到尖端附近的固定部分，以将其与悬臂解耦，即可完成分接模式力感测。 。该方法的主要特点是使用双压电晶片，由于压电和反压电效应，该双晶片在其共振频率下同时激发和检测机械振动，从而使其简单，紧凑，易于实现且没有寄生光学背景。 。结合市售的SPM控制器，已获得各种样品的敲击模式图像，例如光栅，人乳腺腺癌细胞，红血球和220 nm聚苯乙烯球的密堆积层。此外，还同时拍摄了一层聚苯乙烯球体的形貌和近场光学图像。结果表明，此处描述的敲击模式设置可靠且灵敏，并显示出对生物学应用的希望。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号