Survey on metamaterials in bio-medicine

Abstract

Microwave antennas and sensors employed in bio-medical field can be used either for diagnosis like Magnetic Resonance Imaging (MRI), Microwave Computed Tomography (CT) or therapeutic purposes like Hyperthermia, Coagulation. Accurate diagnosis and treatment have always been a challenging task.This paper focuses on new material of the era, named Metamaterial which has a special feature of exhibiting a negative Refractive Index at desired frequency. This article gives a brief review over the features of metamaterials and their significance over prevention, detection or therapy of few disorders. The design concept of metamaterials in the desired ISM band is also reviewed. The advent of these materials has been discussed on diagnosis of breast tumors, MR Imaging, strain sensing, organic tissue analysis, Hyperthermia and Specific Absorption Rate (SAR) analysis. Implantable and Resorbable antennas are also presented.

Multi‐Domain Detection Computational Imaging via Reconfigurable Metasurfaces MIMO System

“…Metamaterial computational imaging (MCI) [1][2] opens up advanced electromagnetic (EM) detection modes, and provides a novel approach to address the principle challenges of synthetic aperture radar imaging. Due to the characteristic that does not depend on the relative motion between the target and the detection device, MCI has made great significance in security screening, [3] biomedicine, [4] and interstellar space observation. [5] Originating in the end of the 20th century, [6] metamaterials represent an area of fundamental research with a high interest time-domain multiplexing, machine learning, and programmable metasurfaces are combined to train imaging algorithms in different target scenarios, thus striking a balance between imaging speed and imaging quality.…”

“…Metamaterial computational imaging (MCI) [ 1–2 ] opens up advanced electromagnetic (EM) detection modes, and provides a novel approach to address the principle challenges of synthetic aperture radar imaging. Due to the characteristic that does not depend on the relative motion between the target and the detection device, MCI has made great significance in security screening, [ 3 ] biomedicine, [ 4 ] and interstellar space observation. [ 5 ]…”

Analytic Sinusoidal Steady-State Electromagnetic Field Expressions for the Ideal Veselago Lens

“…None the less, for the past two decades the use of double negative materials has been investigated for a vast number of applications including super-resolution for nano-scale object imaging, [15]- [17], microwave imaging, [18]- [21], object cloaking and insulating, [22], manufacturing electronic sensors, [23], bio-medicine and biomedical imaging, [24], [25], as well as recent applications such as optical computing [26] and energy harvesting [27]. The concept has even been extended to that of heat conduction, [28].…”

Infrared absorption suppressed terahertz metamaterial absorber

“…aterials with thin thickness, subwavelength structure 1,2) and unique electromagnetic absorption characteristics have broad application prospects in optics, [3][4][5] radar, [6][7][8][9][10] biomedicine 11,12) and other fields, especially in the terahertz (THz) band, which has not been fully developed. Terahertz metamaterial absorber (TMA), which is an artificial material with periodic structure and strong absorptions of specific electromagnetic waves, is an ideal choice for rapidly developed THz devices.…”