Advances in Terahertz Imaging

Saha, Arijit

doi:10.1007/978-981-15-3235-1_10

Cited by 3 publications

(4 citation statements)

References 105 publications

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“…In the past 20-30 years, THz imaging has experienced a rapid expansion that has allowed for the development of different imaging methodologies [69][70][71], among which is the "time of flight THz imaging" that enables a three-dimensional visualization of the internal structure of the investigated objects. Time of flight THz imaging provides information about position and thickness of inner layers as well as a geometrical characterization of hidden features.…”

Section: Terahertz Imaging (Thz-tdi)mentioning

confidence: 99%

Imaging Cultural Heritage at Different Scales: Part I, the Micro-Scale (Manufacts)

et al. 2023

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Applications of non-invasive sensing techniques to investigate the internal structure and surface of precious and delicate objects represent a very important and consolidated research field in the scientific domain of cultural heritage knowledge and conservation. The present article is the first of three reviews focused on contact and non-contact imaging techniques applied to surveying cultural heritage at micro- (i.e., manufacts), meso- (sites) and macro-scales (landscapes). The capability to infer variations in geometrical and physical properties across the inspected surfaces or volumes is the unifying factor of these techniques, allowing scientists to discover new historical sites or to image their spatial extent and material features at different scales, from landscape to artifact. This first part concentrates on the micro-scale, i.e., inspection, study and characterization of small objects (ancient papers, paintings, statues, archaeological findings, architectural elements, etc.) from surface to internal properties.

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Section: Terahertz Imaging (Thz-tdi)mentioning

confidence: 99%

Imaging Cultural Heritage at Different Scales: Part I, the Micro-Scale (Manufacts)

et al. 2023

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“…Terahertz (THz) is electromagnetic radiation between the microwave and infrared range, with the frequency in the range of 0.1‐10 THz (wavelength of 0.03‐30 mm) (Saha, 2020; Wang et al., 2021). The electromagnetic energy of the THz‐band photons is about 1‐10 meV, which is roughly equivalent to the energy of the transition between the molecular rotational energy levels.…”

Section: Imaging Technologymentioning

confidence: 99%

“…By analyzing and processing the recorded amplitude information and phase information of the THz pulse, three‐dimensional imaging can be performed on the object, and the internal defects and the texture of the material can be distinguished. Classical THz imaging technologies developed in recent years include THz time‐domain spectroscopy system (THz‐TDS) imaging (pulse imaging), continuous wave (CW) imaging, near‐field imaging, time‐of‐flight imaging, and THz CT (Saha, 2020). Among them, THz‐TDS and CW imaging are the most commonly used nondestructive food detection technologies (Ok et al., 2018).…”

Section: Imaging Technologymentioning

confidence: 99%

Intelligent detection for fresh‐cut fruit and vegetable processing: Imaging technology

Tang

Zhang

Mujumdar

2022

Comp Rev Food Sci Food Safe

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Fresh-cut fruits and vegetables are healthy and convenient ready-to-eat foods, and the final quality is related to the raw materials and each step of the cutting unit. It is necessary to integrate suitable intelligent detection technologies into the production chain so as to inspect each operation to ensure high product quality. In this paper, several imaging technologies that can be applied online to the processing of fresh-cut products are reviewed, including: multispectral/hyperspectral imaging (M/HSI), fluorescence imaging (FI), X-ray imaging (XRI), ultrasonic imaging, thermal imaging (TI), magnetic resonance imaging (MRI), terahertz imaging, and microwave imaging (MWI). The principles, advantages, and limitations of these imaging technologies are critically summarized. The potential applications of these technologies in online quality control and detection during the fresh-cut processing are comprehensively discussed, including quality of raw materials, contamination of cutting equipment, foreign bodies mixed in the processing, browning and microorganisms of the cutting surface, quality/shelf-life evaluation, and so on. Finally, the challenges and future application prospects of imaging technology in industrialization are presented.

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“…Though recently, many studies have been done to improve imaging techniques. The results have been very fruitful because the resolution enhanced to several hundred nanometers sufficient for the detection of early skin cancer [91,92]. Similarly, another sensing technique is localized surface plasmon resonance (LSPR), in which gold or silver nanoparticles are used for biomedical sensing at visible and nearvisible wavelengths [43].…”

Section: Indium Nitride Nanoparticles Used For the Detection Of Skin Cancermentioning

confidence: 99%

Recent Advances and Implication of Bioengineered Nanomaterials in Cancer Theranostics

et al. 2021

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Cancer is one of the most common causes of death and affects millions of lives every year. In addition to non-infectious carcinogens, infectious agents contribute significantly to increased incidence of several cancers. Several therapeutic techniques have been used for the treatment of such cancers. Recently, nanotechnology has emerged to advance the diagnosis, imaging, and therapeutics of various cancer types. Nanomaterials have multiple advantages over other materials due to their small size and high surface area, which allow retention and controlled drug release to improve the anti-cancer property. Most cancer therapies have been known to damage healthy cells due to poor specificity, which can be avoided by using nanosized particles. Nanomaterials can be combined with various types of biomaterials to make it less toxic and improve its biocompatibility. Based on these properties, several nanomaterials have been developed which possess excellent anti-cancer efficacy potential and improved diagnosis. This review presents the latest update on novel nanomaterials used to improve the diagnostic and therapeutic of pathogen-associated and non-pathogenic cancers. We further highlighted mechanistic insights into their mode of action, improved features, and limitations.

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Advances in Terahertz Imaging

Cited by 3 publications

References 105 publications

Imaging Cultural Heritage at Different Scales: Part I, the Micro-Scale (Manufacts)

Imaging Cultural Heritage at Different Scales: Part I, the Micro-Scale (Manufacts)

Intelligent detection for fresh‐cut fruit and vegetable processing: Imaging technology

Recent Advances and Implication of Bioengineered Nanomaterials in Cancer Theranostics

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