Publication

Spectroscopic scanning near-field optical microscopy with a free electron laser: CH2 bond imaging in diamond films

Giorgio Margaritondo
2001
Journal Articles

Abstract

Hydrogen chemistry in thin films and biological systems is one of the most difficult experimental problems in today's science and technology We successfully tested a novel solution, based on the spectroscopic version of scanning near-field optical microscopy (SNOM). The tunable infrared radiation of the Vanderbilt free electron laser enabled us to reveal clearly hydrogen-decorated grain boundaries on nominally hydrogen-free diamond films. The images were obtained by SNOM detection of reflected 3.5 mum photons, corresponding to the C-H stretch absorption, and reached a lateral resolution of 0.2 mum, well below the lambda /2 (lambda = wavelength) limit of classical microscopy.

Official source

https://infoscience.epfl.ch/entities/publication/adeffee0-3c8a-47bc-aefb-3487406b7d3e

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Giorgio Margaritondo
2001
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/adeffee0-3c8a-47bc-aefb-3487406b7d3e

About this result

Related concepts (32)

Super-resolution microscopy

Super-resolution microscopy is a series of techniques in optical microscopy that allow such images to have resolutions higher than those imposed by the diffraction limit, which is due to the diffraction of light. Super-resolution imaging techniques rely on the near-field (photon-tunneling microscopy as well as those that use the Pendry Superlens and near field scanning optical microscopy) or on the far-field.

Microscopy

Microscopy is the technical field of using microscopes to view objects and areas of objects that cannot be seen with the naked eye (objects that are not within the resolution range of the normal eye). There are three well-known branches of microscopy: optical, electron, and scanning probe microscopy, along with the emerging field of X-ray microscopy. Optical microscopy and electron microscopy involve the diffraction, reflection, or refraction of electromagnetic radiation/electron beams interacting with the specimen, and the collection of the scattered radiation or another signal in order to create an image.

Near-field scanning optical microscope

Near-field scanning optical microscopy (NSOM) or scanning near-field optical microscopy (SNOM) is a microscopy technique for nanostructure investigation that breaks the far field resolution limit by exploiting the properties of evanescent waves. In SNOM, the excitation laser light is focused through an aperture with a diameter smaller than the excitation wavelength, resulting in an evanescent field (or near-field) on the far side of the aperture.

Related publications (32)

Spectroscopic scanning near-field optical microscopy with a free electron laser: CH2 bond imaging in diamond films

Chat with Graph Search

Topology-aware reconstruction of cellular state landscapes from microscopy using self-supervised learning

Roadmap on Deep Learning for Microscopy

Study of the Magnetic Properties of Cu2OSO4. High-Resolution Neutron Spectroscopy