Title :
High Resolution Scanning Microwave Microscopy for Applications in Liquid Environment
Author :
Farina, M. ; Donato, A. Di ; Mencarelli, D. ; Venanzoni, G. ; Morini, A.
Author_Institution :
Dipt. di Ing. dell´´Inf. (DII), Univ. Politec. delle Marche, Ancona, Italy
Abstract :
In this work, we demonstrate a hybrid scanning tunneling microscope/near field scanning microwave microscope featuring nanometric resolution in liquid environment. The system performs an ultra-broadband microwave analysis, since the frequency is swept (up to 50 GHz) for each spatial point of the sample under measurement. A conversion in time-domain allows to disentangle near-field and far-field probe-sample interactions. Results are reported for highly oriented pyrolitic graphite immersed in water, and demonstrate microwave nanometric resolution in spite of the presence of the losses induced by the aqueous environment.
Keywords :
graphite; microwave devices; scanning tunnelling microscopy; time-domain analysis; aqueous environment; far-field probe sample interaction; hybrid scanning tunneling microscope; liquid environment; microwave nanometric resolution; near field scanning microwave microscope; pyrolitic graphite; time-domain analysis; ultrabroadband microwave analysis; Liquids; Microscopy; Microwave FET integrated circuits; Microwave imaging; Microwave measurements; Microwave theory and techniques; Probes; Liquid environment; scanning microwave microscopy (SMM); vector network analyzer;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2012.2225607
