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Electromagnetic Waves, Antennas and Sensor Technologies

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Communications".

Deadline for manuscript submissions: closed (10 March 2025) | Viewed by 878

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Guest Editor
College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China
Interests: antennas; microchip antennas; optical wireless communication (owc); 5G
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Special Issue Information

Dear Colleagues,

In the current era of rapid technological development, biological tissue detection has become an important research direction in the fields of medicine and biology. To achieve more accurate and efficient biological tissue detection, various advanced technologies and methods are constantly emerging. Photonic crystal sensors, with their unique optical properties, show great potential in biological tissue detection. They can sensitively perceive subtle changes in biological tissues through the modulation and reflection of light. At the same time, the continuous innovation of sensor methods also provides more possibilities for biological tissue detection. From traditional electrical detection to emerging optical, acoustic, and other detection means, each method is striving to improve the sensitivity and specificity of detection. Electromagnetic wave propagation also plays a key role in biological tissue detection. Understanding the propagation laws of electromagnetic waves in biological tissues can help optimize the transmission and reception of detection signals and improve the accuracy of detection. The development of antenna radiation technology provides support for the effective transmission and reception of electromagnetic waves. Carefully designed antennas can enhance the radiation efficiency of electromagnetic waves and improve the communication quality between the sensor and the detected object.

The focus of this Special Issue is to illustrate that the field of biological tissue detection is moving in a more advanced and reliable direction under the synergy of multiple aspects such as photonic crystal sensors, sensor methods, electromagnetic wave propagation, and antenna radiation, bringing more benefits to human health and biological science research.

Prof. Dr. Haifeng Zhang
Guest Editor

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Keywords

  • biological tissue detection
  • photonic crystal sensor
  • sensor method
  • electromagnetic wave propagation
  • antenna radiation

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Published Papers (1 paper)

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Research

13 pages, 8457 KiB  
Article
Electromagnetic Properties of Natural Plant Leaves for Eco-Friendly and Biodegradable Substrates for Wireless IoT Devices
by Nikolay Todorov Atanasov, Blagovest Nikolaev Atanasov and Gabriela Lachezarova Atanasova
Sensors 2025, 25(4), 1118; https://doi.org/10.3390/s25041118 - 12 Feb 2025
Viewed by 626
Abstract
Today, innovative engineering solutions, including IoT devices, enable the precise monitoring of plant health and the early detection of diseases. However, the lifespan of IoT devices used for the real-time monitoring of environmental or plant parameters in precision agriculture is typically only a [...] Read more.
Today, innovative engineering solutions, including IoT devices, enable the precise monitoring of plant health and the early detection of diseases. However, the lifespan of IoT devices used for the real-time monitoring of environmental or plant parameters in precision agriculture is typically only a few months, from planting to harvest. This short lifespan creates challenges in managing the e-waste generated by smart agriculture. One potential solution to reduce the volume and environmental impact of e-waste is to use more environmentally friendly and biodegradable materials to replace the non-degradable components (substrates) currently used in the structure of IoT devices. In this study, we estimate the electromagnetic properties at 2565 MHz of the leaves from three widely grown crops: winter wheat, corn, and sunflower. We found that winter wheat and sunflower leaves have values of the real part of relative permittivity ranging from about 33 to 69 (wheat) and 13 to 32 (sunflower), respectively, while corn exhibits a value of about 33.5. Our research indicates that the position of a leaf on the plant stem and its distance from the soil significantly affect the relative permittivity of winter wheat and sunflower. These relationships, however, are not evident in the electromagnetic properties of corn leaves. Full article
(This article belongs to the Special Issue Electromagnetic Waves, Antennas and Sensor Technologies)
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