Results 131 to 140 of about 6,696,337 (373)

An overview of UWB antennas for microwave imaging systems for cancer detection purposes

open access: yes, 2018
In the last decades, microwave imaging has been a new area of research due to its many advantages over current imaging systems. Microwave imaging system is used for in-depth inspection of biological tissues.
B. Borja   +2 more
semanticscholar   +1 more source

Photoluminescent UV Light Modulation via Anisometric Carbon Nanodots for UV–Visible Shutter and UV Sensor

open access: yesAdvanced Functional Materials, EarlyView.
Anisometric carbon nanodots are synthesized directly from a liquid crystal precursor and embedded into polymer network liquid crystals to create soft, multifunctional photonic films. These hybrid devices exhibit polarized photoluminescence, broad UV absorption, and fast, electrically tunable light modulation.
Mangesh D. Patekari   +4 more
wiley   +1 more source

Recent Advances in Microwave Imaging for Breast Cancer Detection

open access: yesInternational Journal of Biomedical Imaging, 2016
Breast cancer is a disease that occurs most often in female cancer patients. Early detection can significantly reduce the mortality rate. Microwave breast imaging, which is noninvasive and harmless to human, offers a promising alternative method to ...
Sollip Kwon, Seungjun Lee
semanticscholar   +1 more source

Covalent Organic Frameworks for Water Sorption: The Importance of Framework Physical Stability

open access: yesAdvanced Functional Materials, EarlyView.
This study explores the water‐vapor stability of 2D covalent organic frameworks (COFs) with varying pore sizes. Results reveal microporous COFs demonstrate superior stability compared to mesoporous ones, despite lower water uptake. Mesoporous keto‐enamine‐linked COFs show enhanced stability due to intralayer hydrogen bonds, confirmed by simulations and
Wei Zhao   +13 more
wiley   +1 more source

A Cross-Track Interferometric Synthetic Aperture 3D Passive Positioning Algorithm

open access: yesRemote Sensing
High-precision, robust, and rapid three-dimensional (3D) passive positioning of the radiation source is critical for modern reconnaissance systems. While synthetic aperture technology has advanced 2D passive positioning performance, existing methods fail
Yuan Zhang   +8 more
doaj   +1 more source

Doppler Spectrum-Based NRCS Estimation Method for Low-Scattering Areas in Ocean SAR Images

open access: yesRemote Sensing, 2017
The image intensities of low-backscattering areas in synthetic aperture radar (SAR) images are often seriously contaminated by the system noise floor and azimuthal ambiguity signal from adjacent high-backscattering areas.
Hui Meng   +4 more
doaj   +1 more source

A Simple Microwave Imaging System for Food Product Inspection through a Symmetry-Based Microwave Imaging Approach. [PDF]

open access: yesSensors (Basel), 2023
Bellizzi G   +6 more
europepmc   +1 more source

Differential Ultra-Wideband Microwave Imaging: Principle Application Challenges

open access: yesItalian National Conference on Sensors, 2018
Wideband microwave imaging is of interest wherever optical opaque scenarios need to be analyzed, as these waves can penetrate biological tissues, many building materials, or industrial materials.
J. Sachs   +4 more
semanticscholar   +1 more source

Phase Change Material‐Driven Tunable Metasurface for Adaptive Terahertz Sensing and Communication in 6G Perceptive Networks

open access: yesAdvanced Functional Materials, EarlyView.
This study explores the benefits of metasurfaces made from functional materials, highlighting their ability to be adapted and improved for various high‐frequency applications, including communications and sensing. It first demonstrates the potential of these functional material‐based metasurfaces to advance the field of sub‐THz perceptive networks ...
Yat‐Sing To   +5 more
wiley   +1 more source

Refining Constraints on the Origin of Lunar Irregular Mare Patches via Mini-RF and DFSAR Data Analysis

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Irregular mare patch (IMP) is one of the most enigmatic volcanic features in the lunar nearside maria. Their apparently fresh surface morphology and derived young model ages contradict the currently proposed thermal evolution history of the Moon.
Fei Zhao   +6 more
doaj   +1 more source

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