Optical trapping of polystyrene beads in mixed solvents

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F24%3A63569838" target="_blank" >RIV/70883521:28110/24:63569838 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/70883521:28140/24:63569838

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0143816624000393?dgcid=author" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0143816624000393?dgcid=author</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.optlaseng.2024.108059" target="_blank" >10.1016/j.optlaseng.2024.108059</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Optical trapping of polystyrene beads in mixed solvents

Popis výsledku v původním jazyce

Optical traps are devices used to micromanipulation microscopic objects using a focused laser beam in an optical microscope field of view. Trapping such objects is possible only when their refractive index is higher than the environment&apos;s. Typically, trapping experiments are carried out in aqueous solutions, exploiting the low refractive index of water. Experiments in different pure organic solvents were also reported, showing not very good dependence of the optical-trap force constant on the solvent refractive index. In this study, we carry out optical trapping experiments in mixed water:organic solvents where the organic components are dimethyl sulfoxide, ethylene glycol, and glycerol. Trends of corner frequencies measured in these mixtures follow the theoretical calculations well for all the studied systems in the whole molar-fraction range, indicating their dominant dependence on the refractive index. The conversion of the corner frequencies to the force constants of the trap is strongly influenced by the differences in viscosity throughout the molar-fraction range that emphasizes experimental errors in the regions where it is high. In addition, the force-constant and corner-frequency curves can serve as an indicator of ideality of the potential profile of the optical trap.

Název v anglickém jazyce

Optical trapping of polystyrene beads in mixed solvents

Popis výsledku anglicky

Optical traps are devices used to micromanipulation microscopic objects using a focused laser beam in an optical microscope field of view. Trapping such objects is possible only when their refractive index is higher than the environment&apos;s. Typically, trapping experiments are carried out in aqueous solutions, exploiting the low refractive index of water. Experiments in different pure organic solvents were also reported, showing not very good dependence of the optical-trap force constant on the solvent refractive index. In this study, we carry out optical trapping experiments in mixed water:organic solvents where the organic components are dimethyl sulfoxide, ethylene glycol, and glycerol. Trends of corner frequencies measured in these mixtures follow the theoretical calculations well for all the studied systems in the whole molar-fraction range, indicating their dominant dependence on the refractive index. The conversion of the corner frequencies to the force constants of the trap is strongly influenced by the differences in viscosity throughout the molar-fraction range that emphasizes experimental errors in the regions where it is high. In addition, the force-constant and corner-frequency curves can serve as an indicator of ideality of the potential profile of the optical trap.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/EF19_073%2F0016941" target="_blank" >EF19_073/0016941: Juniorské granty UTB ve Zlíně</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Optics and Lasers in Engineering

ISSN

0143-8166

e-ISSN

1873-0302

Svazek periodika

176

Číslo periodika v rámci svazku

176

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

1-9

Kód UT WoS článku

001176004700001

EID výsledku v databázi Scopus

2-s2.0-85183863767