Investigation of Microwave Imaging and Local Dielectric Characterization of Materials by Using a Homemade Interferometer-based Near-field Microwave Microscope PDF Download

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Investigation of Microwave Imaging and Local Dielectric Characterization of Materials by Using a Homemade Interferometer-based Near-field Microwave Microscope

Investigation of Microwave Imaging and Local Dielectric Characterization of Materials by Using a Homemade Interferometer-based Near-field Microwave Microscope PDF Author: Tianjun Lin
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Languages : en
Pages : 0

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Book Description
Near-field microwave microscopes, which belong to the local scanning probe microscopes family, are considered today as advanced characterization tools in many applications areas including physics, biology and micro and nanotechnologies. The near-field microwave microscope that is used in the work and described in this manuscript is an instrument developed at IEMN owning a great sensitivity in a wide operating frequency band [2-18 GHz]. The potential of the microscope in terms of applications is demonstrated through the characterization of liquids with different modalities of characterization (probe in contact, non-contact and immersed in a liquid). In particular, this instrument is investigated for dielectric spectroscopy of aqueous glucose solutions.This characterization tool that offers sub-wavelength imaging capability is also tested in different situations (surface and subsurface imaging). Imaging resolution and measurement accuracy are evaluated and easily implementable processing methods are proposed to improve the quality of imaging. Finally, a solution towards a larger compactness of the instrument is investigated through the replacement of the network analyzer by a more compact device (six-port reflectometer type).