TERAHERTZ OPTICAL ACTIVITY MODELLING AND MEASUREMENT IN CRYSTALS

Kód výsledku v IS VaVaI

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Nalezeny alternativní kódy

RIV/61989100:27740/23:10254362

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

TERAHERTZ OPTICAL ACTIVITY MODELLING AND MEASUREMENT IN CRYSTALS

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

TERAHERTZ OPTICAL ACTIVITY MODELLING AND MEASUREMENT IN CRYSTALS

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10300 - Physical sciences

Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

PhD students´ day FMST 2023

ISBN

978-80-248-4697-2

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

168-171

Název nakladatele

Vysoká škola báňská - Technická univerzita Ostrava

Místo vydání

Ostrava

Místo konání akce

Ostrava

Datum konání akce

15. 6. 2023

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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