TERAHERTZ OPTICAL ACTIVITY MODELLING AND MEASUREMENT IN CRYSTALS

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F23%3A10254362" target="_blank" >RIV/61989100:27640/23:10254362 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27740/23:10254362

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

TERAHERTZ OPTICAL ACTIVITY MODELLING AND MEASUREMENT IN CRYSTALS

Original language description

Chirality exists in large amount of natural materials. As an asymmetric geometric property, chiralityidentifies that an object cannot be superimposed with itself after mirroring transformation. In pharmacy, theenantiomers of one kind of biomedicine, even if they have the same chemical composition, show individualstereoselectivity due to chirality. Hence, the isomers exhibit obviously disparities in toxicity and treatment efficacy.In addition, the chiral molecules exhibit optical activity - different complex refractive indices for the left and rightcircular polarization. Thus, optical activity measurement has already become an attractive method in chiral materialmeasurements. Techniques of circular dichroism and optical rotatory dispersion in infrared, visible and ultravioletrange have matured for the measurements of vibration and rotation modes in low weight molecules. Inbiomolecules, such as amino acids and protein, vibration modes of these crystalized molecular complexes belongto THz frequencies. In this paper, the THz polarization response in quartz is observed, which shows strongly supportfor the future measurements of amino acids, proteins and other biomedical samples. Jones matrices describes thewhole measurement procedure mathematically. The optimized plasmonic Born-Kuhn model explains the complexTHz optical activity spectra. In experiment, THz time-domain ellipsometric spectroscopy identifies the different THzresponses of several kinds of samples. which enables the THz ellipsometry detection to become a reasonablemethod in the THz analysis of anisotropic natural materials.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10300 - Physical sciences

Project

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Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

PhD students´ day FMST 2023

ISBN

978-80-248-4697-2

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

168-171

Publisher name

Vysoká škola báňská - Technická univerzita Ostrava

Place of publication

Ostrava

Event location

Ostrava

Event date

Jun 15, 2023

Type of event by nationality

CST - Celostátní akce

UT code for WoS article

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