Functional sample for evaluation of temperature using cathodoluminescence light emitted by quantum dots

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APR36333" target="_blank" >RIV/00216305:26620/21:PR36333 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Functional sample for evaluation of temperature using cathodoluminescence light emitted by quantum dots

Popis výsledku v původním jazyce

The reported system is based on the temperature measurement system that was developed in the first stage of the sub-project. It serves for contactless, non-destructive temperature measurement of vitrified samples in electron microscope (EM). The spatial resolution is not limited by a conventional diffractive limit but in principle should allow temperature estimates of the sample (cell) surface on the scale of tens of nanometers. The sensing principle is based on cathodoluminescence (CL) of colloidal quantum dots deposited over a sample of interest. The functional sample is based on a modified CL detector that allows direct measurement of CL. The major progress is represented by the detailed calibration and optimization of the device parameters.

Název v anglickém jazyce

Functional sample for evaluation of temperature using cathodoluminescence light emitted by quantum dots

Popis výsledku anglicky

The reported system is based on the temperature measurement system that was developed in the first stage of the sub-project. It serves for contactless, non-destructive temperature measurement of vitrified samples in electron microscope (EM). The spatial resolution is not limited by a conventional diffractive limit but in principle should allow temperature estimates of the sample (cell) surface on the scale of tens of nanometers. The sensing principle is based on cathodoluminescence (CL) of colloidal quantum dots deposited over a sample of interest. The functional sample is based on a modified CL detector that allows direct measurement of CL. The major progress is represented by the detailed calibration and optimization of the device parameters.

Druh

G_funk - Funkční vzorek

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/TN01000008" target="_blank" >TN01000008: Centrum elektronové a fotonové optiky</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Interní identifikační kód produktu

CL-QD-THERM

Číselná identifikace

178859

Technické parametry

An integral part of any temperature measurement technique is precision and accuracy evaluation and calibration. The measurement technique based on cathodoluminescence (CL) of quantum dots, which was developed in the earlier stage of the project, had to be calibrated with the aid of full-range spectrometry. For this, an optical fiber was introduced into the chamber of an electron microscope and the in-situ CL spectra were evaluated with respect to a calibration measurement of photoluminescence in an external cryostat. The obtained results were used to create a calibrated look-up table which could be used to translate the RGB signal output of the CL detector. The sensitivity and accuracy of the functional sample is supposed to be improved by utilization of narrow- band RGB filters.

Ekonomické parametry

The device will form a basis for future temperature evaluation within dual beam systems for preparation of cryo-samples.

Kategorie aplik. výsledku dle nákladů

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IČO vlastníka výsledku

00216305

Název vlastníka

Vysoké učení technické v Brně

Stát vlastníka

CZ - Česká republika

Druh možnosti využití

A - K využití výsledku jiným subjektem je vždy nutné nabytí licence

Požadavek na licenční poplatek

A - Poskytovatel licence na výsledek požaduje licenční poplatek

Adresa www stránky s výsledkem

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