1 / 1

Advancing Apertureless NSOM Using Sharp AFM Probe

Explore a new paradigm in near-field scanning optical microscopy (NSOM) by enhancing local field with a sharp AFM probe. This innovative approach leverages the photoluminescence of AFM probes to provide a point light source for NSOM imaging and spectroscopy, offering high photon throughput, tunable wavelength, simplicity in detection, high spatial resolution, and user-friendly operation. Discover the setup and imaging capabilities through nanostructures of Au islands.

yagil
Download Presentation

Advancing Apertureless NSOM Using Sharp AFM Probe

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Development of A New Paradigm for Apertureless Near-fieldScanning Optical MicroscopeGang-yu Liu, University of California-Davis, DMR 0723118 A new approach for apertureless NSOM is developed to utilizes sharp AFM probe to enhance the local field. Conventional AFM probes exhibit photoluminescence upon excitation by a focused visible laser beam. This tip provides a “point light source” for NSOM imaging and spectroscopy. The intrinsic advantages of this approach include: (a) high photon throughput with the ability to tune wavelength; (b) simplicity in detection of near-field optical signals because the PL exhibits different wavelength from the excitation beam; (c) high spatial resolution due to the apertureless AFM platform with sharp probes and effective deflection feedback; and (d) simplicity in operation. The figure to the right includes the set up, NSOM probes (top insert) and images of nanostructures of Au islands (bottom).

More Related