We demonstrate a detection method for microwave spectroscopy on magnetization reversal dynamics of nanomagnets. Measurement of the nanomagnet anisotropic magnetoresistance was used for probing how magnetization reversal is resonantly enhanced by microwave magnetic fields. We used Co strips of 2 μm × 130 nm × 40 nm, and microwave fields were applied via an on-chip coplanar wave guide. The method...

Active microwave imaging is explored as an imaging modality for early detection of breast cancer. When exposed to microwaves, breast tumor exhibits electrical properties that are significantly different from that of healthy breast tissues. The two approaches of active microwave imaging — confocal microwave technique with measured reflected signals and microwave tomographic imaging with measured...

Microwaves can penetrate many obstructions that are opaque at visible wavelengths, however microwave imaging is challenging due to resolution limits associated with relatively small apertures and unrecoverable "stealth" regions due to the specularity of most objects at microwave frequencies. We demonstrate a multispectral time-of-flight microwave imaging system which overcomes these challenges ...

Medical microwave imaging techniques seek to exploit dielectric-properties contrast mechanisms that are sensitive to physiological or pathological factors of clinical interest. The dawn of the 21st century has brought exciting prospects for innovative microwave sensing technologies to address diagnostic needs in medicine, particularly early-stage breast cancer detection. Yet numerous challenges...

The paper discusses fabrication of homogenous and heterogeneous breast phantoms to simulate the dielectric properties of human breast over the microwave frequency range from 0.5GHz to 13.5GHz. The breast phantoms have stable mechanical configuration and dielectric properties suitable for microwave imaging experiments particularly ultra-wideband microwave imaging for breast cancer detection.

the imaging of hepatocellular carcinoma (hcc) is challenging and plays a crucial role in the diagnosis and staging of the disease. a variety of imaging modalities, such as ultrasound, computed tomography (ct), magnetic resonance imaging (mri) and nuclear medicine are currently used in evaluating patients with hcc. although the best option for the treatment of these cases is hepatic resection or...

Recent developments in fifth-generation (5G) wireless communications networks are creating an increasingly crowded electromagnetic environment at microwave (3–30 GHz) and millimeter-wave (30–300 frequencies. Radiation these bands can provide non-destructive testing of defects shielded structures using non-ionizing signals. In actual building setting where 5G signals present, passive imaging the...

Microwave imaging of the breast is of interest for monitoring breast health, and approaches to active microwave imaging include tomography and radar-based methods. While the literature contains a growing body of work related to microwave breast imaging, there are only a few prototype systems that have been used to collect data from humans. In this paper, a prototype system for monostatic radar-...

The paper presents some new methods for early breast cancer detection using microwaves. On describe the following methods and techniques: microwave impedance tomography, termography and microwave radiometry, combined methods microwave and ultra-acustic image and confocal microwave imaging. We make an analysis of advantages and disadvantages of every method and also physical principles of microw...