Chipless RFID systems can be considered as a special case of passive RFID systems,
where the tag contains no power source and no electronics. Instead, the tag's information is …

In this paper, a low-profile metasurface retroreflector based on an ultra-thin wide-angle and
high-efficiency metalens is proposed and investigated. Owing to its stable high transmission …

Monitoring pathogens has become a major challenge for society and research in recent
years. Of great interest are refractive index sensors, which are based on the interaction …

In addressing sensing in harsh and dynamic environments, there are no available millimeter-
wave chipless and wireless sensors capable of continuous operation at extremely high …

Recently, many research efforts have been dedicated to improving light coupling into solar
cells and reducing optical losses. Promising candidates regarding scalability include direct …

Wireless systems are facing increasing pressure due to the growing demand for data
transmission. One potential solution to this problem is to shift communication frequencies …

Transformation optics (TO) or transformation acoustics (TA) theory provides an elegant
framework for designing intricate wave-material interaction devices. Combining TO or TA …

In this paper, we investigate a shortened horn antenna with high gain that is enabled by a
3D-printed gradient index (GRIN) lens composed of high permittivity zirconia. The baseline …

This contribution discusses the impact of sintering temperatures on dielectric properties of
3D‐printed alumina (Al2O3) in the W‐band, by evaluating high quality factor (− Q) …

Innovating passive and chipless coded landmarks have recently emerged for high accuracy
self-localization systems. Existing landmarks make use of the combination of retro-directive …