Recent Developments in Imaging and Sensing: From Radio Frequencies to Ionizing Radiation
A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Sensing and Imaging".
Deadline for manuscript submissions: 31 December 2026 | Viewed by 60
Special Issue Editor
Interests: MIMO radar imaging; radar cross section characterisation; synthetic aperture radar; radar target recognition; radar signal processing; subsurface sensing and imaging; electromagnetic scattering; computerized tomography; iterative reconstruction methods; inverse scattering; mutual coupling between antennas; industrial applications; biomedical electromagnetics; non-destructive testing; microwave sensing; ultra wideband impulse radar; millimetre wave imaging; terahertz imaging; ionizing radiation; numerical modelling; electromagnetic theory; engineering education
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Special Issue Information
Dear Colleagues,
Imaging and sensing technologies have advanced dramatically across the electromagnetic spectrum, from long-wavelength microwaves to short-wavelength ionizing radiation. Each regime offers unique strengths in terms of penetration, spatial resolution, and material interaction, making cross-disciplinary innovations particularly impactful.
Radiowave, microwave, and millimetre-wave systems remain central to radar, wireless communication, and non-destructive testing. Compact antennas, reconfigurable arrays, and wideband electronics now enable applications in autonomous navigation, 5G/6G networks, and security screening.
Terahertz waves (0.1–10 THz) bridge electronics and photonics, offering spectroscopic fingerprints for biomedical diagnostics, food safety, and cultural heritage conservation. Advances in quantum cascade lasers, photomixers, and ultrafast detectors continue to close the long-standing “THz gap.”
Optical and infrared sensing deliver high-resolution imaging with applications in medical diagnostics, environmental monitoring, and smart manufacturing. Techniques such as optical coherence tomography and hyperspectral imaging are increasingly enhanced by artificial intelligence and multimodal fusion.
At shorter wavelengths, ionizing radiation such as ultraviolet (UV), X-rays, and beyond play a critical role in medical imaging, semiconductor inspection, and space exploration. Breakthroughs in high-brilliance sources, flat-panel detectors, and iterative reconstruction methods have revolutionized X-ray CT, synchrotron imaging, and radiation-based diagnostics.
Across all regimes, the convergence of advanced hardware, computational imaging, and AI-driven analytics is transforming sensing into intelligent, real-time systems.
This Special Issue of Sensors invites contributions spanning radio frequencies to ionizing radiation, highlighting device innovations, algorithms, experimental demonstrations, and emerging applications that are shaping the future of electromagnetic and radiation-based imaging.
Dr. Hoi-Shun (Antony) Lui
Guest Editor
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Keywords
- sensing
- imaging
- electromagnetic scattering
- microwave radar
- synthetic aperture radar
- ground penetrating radar
- radar target detection
- radar target classification
- radar target recognition
- microwave tomography
- millimetre wave radar
- terahertz radar
- non-destructive testing
- diffraction tomography
- inverse scattering
- electromagnetic methods for medical diagnosis
- microwave-based medical diagnosis
- radiology
- computerized tomography
- planar scintigraphy
- tomosynthesis
- positron emission tomography (PET)
- single photon emission computed tomography (SPECT)
- sensor fusion
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