Advanced Electromagnetic Metamaterials for Temperature Sensing Applications

Abstract

Metamaterials with novel properties have excited much research attention in the past several decades. Many applications have been proposed and developed for the reported metamaterials in various engineering areas. Specifically, for the resonant-type metamaterials with narrow resonance line width and strong resonance strength, the resonant frequency and strength are highly depended on the changings of meta-atom structure and/or substrate media properties induced by the environment physical or chemistry parameters varying. Therefore, physical or chemistry sensing applications for the resonant-type metamaterial units or arrays are developed in recent years. In this mini review, to help the researchers in those fields to catch up with the newly research advances, we would like to summarize the recently reported high-performance metamaterial-inspired sensing applications, especially the temperature sensing applications, based on different kinds of metamaterials. Importantly, by analyzing the advantages and disadvantages of several conventional metamaterial units, the newly proposed high quality-factor metamaterial units are discussed for high-precision sensing applications, in terms of the sensitivity and resolution. This mini review can guide researchers in the area of metamaterial-inspired sensors to find some new design routes for high-precision sensing.

Flexible Metamaterial-Based Frequency Selective Surface with Square and Circular Split Ring Resonators Combinations for X-Band Applications

“…At first, in 1968 Victor Veselago proposed the concept of a meta-material that does not exist in nature and shows extreme influence over the E and H fields by employing different orientations, polarization angles and physical shape of the structure. The meta-materials have extraordinary features, such as negative permittivity (ENG) [1], negative permeability (MNG) [2] and negative refractive index [3], as well as electromagnetic (EM) absorption [4], and can be used in many applications like enhancing antenna performance [5], shielding applications [6], satellite communication applications [7], energy harvesters [8], filters [9] and sensors [10].…”

Recoverable Broadband Absorption Based on Ultra-Flexible Meta-Surfaces

“…The structure was artificial and came to be the so-called metamaterial perfect absorber (MPA), in which the effective impedance was controlled flexibly to be equal to that of the surrounding environment, around the electric/magnetic resonances [1]. With the advantages of reduced size, wide adaptability, and increased effectiveness, MPAs have gained much attention and become candidates for many applications, such as emission [2,3], sensing [4][5][6][7][8], wireless communication [9,10], and energy harvesting [11][12][13]. To date, studies on MPAs have been carried out in different frequency regions, including MHz [14,15], GHz [10,16], THz [16][17][18][19], and visible range [20], to yield remarkable advantages of high absorption [21], polarization insensitivity, incident-angle stability [22], multi-/broadband [22][23][24][25][26][27][28], and, especially, the possibility of a switchable absorption bandwidth.…”

Dual-Band, Polarization-Insensitive, Ultrathin and Flexible Metamaterial Absorber Based on High-Order Magnetic Resonance

“…Metamaterial absorbers (MAs) have gained much attention because of their potential applications in sensing [1][2][3][4], imaging [5,6], and energy harvesting [7,8]. The first MA was introduced by Landy et al in 2008, and consisted of two metallic elements on two sides of a dielectric layer [9].…”