Nearfield plasmonic microscopy.
- Resource Type
- Theses
- Authors
- Wang, Yuan
- Source
- Dissertation Abstracts International; Dissertation Abstract International; 70-11B.
- Subject
- Engineering, Electronics and Electrical
Physics, Optics
- Language
- English
Summary: To further explore the limit of optical imaging, we have developed an apertureless NSOM system with the ability to retrieve amplitude and phase information of the nearfield simultaneously. The system has been demonstrated with highest resolution of ∼15nm FWHM for a broad working wavelength bandwidth from visible to near infrared. The modification of energy transfer between fluorescent molecules by metallic nanoparticles is also studied as an extension for the plasmonic imaging and sensing applications. Near-field optical and plasmonic based imaging systems, including surface plasmon enhanced fluorescence and FRET, have the potential to become a powerful analytical tool for noninvasive optical probing of the local chemical and structural properties in the nanoscale.