High-frequency enhanced based on high-resolution synthetic spectrum quantitative phase imaging

2021 ◽  
Author(s):  
Linpeng Lu ◽  
Jiasong Sun ◽  
Yao Fan ◽  
Jialin Zhang ◽  
Qian Chen ◽  
...  
Keyword(s):  
High Resolution ◽  
High Frequency ◽  
Synthetic Spectrum ◽  
Phase Imaging ◽  
Quantitative Phase Imaging ◽  
Quantitative Phase

scholarly journals High-resolution impedance mapping using electrically activated quantitative phase imaging

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Cristina Polonschii ◽  
Mihaela Gheorghiu ◽  
Sorin David ◽  
Szilveszter Gáspár ◽  
Sorin Melinte ◽  
...  
Keyword(s):  
High Resolution ◽  
Spatial Resolution ◽  
Indium Tin Oxide ◽  
Electrical Impedance ◽  
Unmet Need ◽  
Optical Path ◽  
Optical Methods ◽  
Phase Imaging ◽  
Quantitative Phase Imaging ◽  
Quantitative Phase

AbstractRetrieving electrical impedance maps at the nanoscale rapidly via nondestructive inspection with a high signal-to-noise ratio is an unmet need, likely to impact various applications from biomedicine to energy conversion. In this study, we develop a multimodal functional imaging instrument that is characterized by the dual capability of impedance mapping and phase quantitation, high spatial resolution, and low temporal noise. To achieve this, we advance a quantitative phase imaging system, referred to as epi-magnified image spatial spectrum microscopy combined with electrical actuation, to provide complementary maps of the optical path and electrical impedance. We demonstrate our system with high-resolution maps of optical path differences and electrical impedance variations that can distinguish nanosized, semi-transparent, structured coatings involving two materials with relatively similar electrical properties. We map heterogeneous interfaces corresponding to an indium tin oxide layer exposed by holes with diameters as small as ~550 nm in a titanium (dioxide) over-layer deposited on a glass support. We show that electrical modulation during the phase imaging of a macro-electrode is decisive for retrieving electrical impedance distributions with submicron spatial resolution and beyond the limitations of electrode-based technologies (surface or scanning technologies). The findings, which are substantiated by a theoretical model that fits the experimental data very well enable achieving electro-optical maps with high spatial and temporal resolutions. The virtues and limitations of the novel optoelectrochemical method that provides grounds for a wider range of electrically modulated optical methods for measuring the electric field locally are critically discussed.

High-resolution quantitative phase imaging based on a spatial light modulator and incremental binary random sampling

2020 ◽  
Vol 59 (20) ◽  
pp. 6148 ◽  
Author(s):  
Zhao Wang ◽  
Gong-Xiang Wei ◽  
Xiao-Lu Ge ◽  
Hui-Qiang Liu ◽  
Ben-Yi Wang
Keyword(s):  
High Resolution ◽  
Random Sampling ◽  
Spatial Light Modulator ◽  
Phase Imaging ◽  
Quantitative Phase Imaging ◽  
Light Modulator ◽  
Quantitative Phase

scholarly journals High-Resolution Quantitative Phase Imaging of Plasmonic Metasurfaces with Sensitivity down to a Single Nanoantenna

Nano Letters ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 1242-1250 ◽  
Author(s):  
Petr Bouchal ◽  
Petr Dvořák ◽  
Jiří Babocký ◽  
Zdeněk Bouchal ◽  
Filip Ligmajer ◽  
...  
Keyword(s):  
High Resolution ◽  
Phase Imaging ◽  
Quantitative Phase Imaging ◽  
Quantitative Phase
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