Spectroscopic terahertz imaging at room temperature employing microbolometer terahertz sensors and its application to the study of carcinoma tissues

Kašalynas, Irmantas (author), Venckevičius, Rimvydas (author), Minkevičius, Linas (author), Sešek, Aleksander (author), Wahaia, Faustino (author), Tamošiunas, Vincas (author), Voisiat, Bogdan (author), Seliuta, Dalius (author), Valušis, Gintaras (author), Švigelj, Andrej (author), Trontelj, Janez (author)

A terahertz (THz) imaging system based on narrow band microbolometer sensors (NBMS) and a novel diffractive lens was developed for spectroscopic microscopy applications. The frequency response characteristics of the THz antenna-coupled NBMS were determined employing Fourier transform spectroscopy. The NBMS was found to be a very sensitive frequency selective sensor which was used to develop a compact all-electronic system for multispectral THz measurements. This system was successfully applied for principal components analysis of optically opaque packed samples. A thin diffractive lens with a numerical aperture of 0.62 was proposed for the reduction of system dimensions. The THz imaging system enhanced with novel optics was used to image for the first time non-neoplastic and neoplastic human colon tissues with close to wavelength-limited spatial resolution at 584 GHz frequency. The results demonstrated the new potential of compact RT THz imaging systems in the fields of spectroscopic analysis of materials and medical diagnostics.

• Language: English
• Keywords: compact THz sensors and components, THz imaging systems, multispectral THz imaging, medical THz imaging
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FE - Faculty of Electrical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2016
• Number of pages: 15 str.
• Numbering: Vol. 16, iss. 4, art. 432
• PID: 20.500.12556/RUL-130312
• UDC: 621.3.029.6
• ISSN on article: 1424-8220
• DOI: 10.3390/s16040432
• COBISS.SI-ID: 11319124
• Publication date in RUL: 13.09.2021

Record is a part of a journal

• Title: Sensors
• Shortened title: Sensors
• Publisher: MDPI
• ISSN: 1424-8220
• COBISS.SI-ID: 10176278

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 01.04.2016

Secondary language

• Language: Slovenian
• Keywords: kompaktni THz senzorji in komponente, THz slikovni sistemi, multispektralne THz slike, medicinske THz slike

Projects

• Funder: Other - Other funder or multiple funders
• Funding programme: COST
• Project number: BM1205