A Review of Flexible Wearable Antenna Sensors: Design, Fabrication Methods, and Applications

Gharbi, Mariam El; Fernández‐García, Raúl; Ahyoud, Saida; Gil, Ignacio

doi:10.3390/ma13173781

Cited by 100 publications

(59 citation statements)

References 93 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[65] Because of this, the industry and academia have developed a strong interest in flexible sensors, and scientists have begun to improve their mechanical properties, including tensile properties, deformation properties, and biocompatibility, so that they can be used in various parts of the human body. [66] Due to the flexibility, extensibility and mechanical strength of cellulose hydrogels, it has become an ideal substrate for motion conduction. [67] For cellulose aerogels, porous aerogel materials have low density, high sensitivity and good mechanical properties.…”

Section: Application Of Cellulose Gel In Flexible Sensingmentioning

confidence: 99%

Recent Application of Cellulose Gel in Flexible Sensing-A Review

Li¹,

Guo²,

Li³

et al. 2021

ES Food Agrofor.

View full text Add to dashboard Cite

There is a huge and growing demand for flexible electronics for electronic skin, wearable devices and medical equipment. At the same time, celluloses with the special crystal shape, surface structure, good biocompatibility and easy degradability is frequently used as a substrate or modified substance for flexible electronic equipment.Therefore, the use of cellulose as a raw material is expected to contribute to environmental protection and help to overcome problems such as biocompatibility and stretchability required by flexible sensing devices. The goal of this review is to provide an overview on the latest developments in cellulose gel-based flexible sensors, especially focusing on the detailed descriptions of the major three applications in electronic skin, sports equipment and medical equipment, as well as the relationship between the structure and properties of the cellulose gel material. Finally, an outlook of the challenges and future possibilities for development of flexible sensing equipment based on cellulose gel material is presented.

show abstract

Section: Application Of Cellulose Gel In Flexible Sensingmentioning

confidence: 99%

Recent Application of Cellulose Gel in Flexible Sensing-A Review

Li¹,

Guo²,

Li³

et al. 2021

ES Food Agrofor.

View full text Add to dashboard Cite

show abstract

“…Regarding the materials used for flexible antennas, there are very different technologies such as conductive wires or fabrics [10] [11], silver paste [12] or conductive inks [13] which make it possible to achieve the radiating element of the antenna. To constitute the flexible substrate, one can find polyester [14] or polymers using fibers such as cotton or felt [12] but also polydimethylsiloxane (PDMS) or graphene (FGF) [15] films. These different materials have different costs and performance and must combine reliability, robustness, sturdiness and flexibility.…”

Section: Antenna Design and Materials Characteristicsmentioning

confidence: 99%

Design and Modeling of a Flexible Conductive Fabric Antenna Integrated in an OLED Light Source for WIMAX Wireless Communication Systems

Sekkal¹,

Canale²,

Halaoui³

et al. 2021

OPJ

View full text Add to dashboard Cite

This work presents a new bendable antenna for worldwide interoperability for microwave access (WiMAX) wireless communication systems. These antennas, transparent and flexible, will be easily integrated into various media and in particular OLED lighting which could be part of the public lighting network of tomorrow as well as on all display media. The integration of these antennas as close as possible to the end-user is a possible solution to reduce the energy consumption which goes hand in hand with the increase in the data rate. This kind of new antenna, designed to be integrated in organic lightemitting diode (OLED), was modeled from a transparent VeilShieldTM conductive fabric and was placed on a 100% polyester substrate with a thickness of 1.5 mm and a loss tangent of 0.02. We have tested and evaluated the characteristic parameters of our antenna, namely the reflection coefficient, the radiation pattern and the gain, to find out the performance of our proposed design. The performance of the transparent conductive fabric integrated in the 100% polyester substrate is tested for the application of flexible antenna operating at 3.5 GHz with a gain value of 5.38 dB. We have integrated this proposed new antenna with the OLED light source containing four layers of different materials and electrical properties: aluminum cathode layer, polymer layer, indium tin oxide (ITO) anode layer and glass substrate layer. After integration, the resonant frequency shifted to 3.52 GHz with a gain value of 4.61 dB. In addition, we also tested the concave bending on the reflection coefficient of the proposed flexible antenna taking into account the different bending angles. This work demonstrates the possibility of integrating these unconventional materials used for the proposed antenna within the OLED despite

show abstract

“…Recently, antennas operating as sensors established a growing demand for monitoring blood glucose levels [15]. Several studies have been reported in the literature using antenna-based sensors to detect blood glucose levels [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Textile Antenna-Sensor for In Vitro Diagnostics of Diabetes

2021

Self Cite

View full text Add to dashboard Cite

In this paper, a feasibility study of a microwave antenna-based sensor is proposed for in vitro experiments for monitoring blood glucose levels. The proposed device consists of a square-ring incorporated within a fully textile monopole antenna to absorb and sense different glucose concentrations, covering patients with different diabetic conditions. The designed antenna-sensor is optimized to operate at 2.4 GHz. The sensing principle is based on the resonance frequency shift of the reflection response of the antenna-based sensor under different glucose levels. The experiments were carried out with blood mimicking by means of aqueous solutions, using D(+)- glucose/water in different concentrations for various diabetic conditions of type-2 diabetes. The performance of the embroidered antenna-based sensor is characterized and validated using a convenient setup for in vitro measurements. The results demonstrated the ability of the proposed antenna-based sensor to cover all the glucose levels of the diabetes range, including hypoglycemia (10–70 mg/dL), normoglycemia (80–110 mg/dL) and hyperglycemia (130–190 mg/dL) with a sensitivity of 350 kHz/(mg/dL). Besides its ability to detect different glucose concentrations of various diabetic conditions, the proposed antenna-sensor presents diverse features such as a simplistic design, compact size, wearability and low cost. The proposed textile device demonstrates a proof of concept for efficient in vitro blood glucose level measurements and diagnostics of diabetes.

show abstract

A Review of Flexible Wearable Antenna Sensors: Design, Fabrication Methods, and Applications

Cited by 100 publications

References 93 publications

Recent Application of Cellulose Gel in Flexible Sensing-A Review

Recent Application of Cellulose Gel in Flexible Sensing-A Review

Design and Modeling of a Flexible Conductive Fabric Antenna Integrated in an OLED Light Source for WIMAX Wireless Communication Systems

Textile Antenna-Sensor for In Vitro Diagnostics of Diabetes

Contact Info

Product

Resources

About