Microrheology with optical tweezers: measuring the relative viscosity of solutions 'at a glance'.
Sci Rep
; 5: 8831, 2015 Mar 06.
Article
em En
| MEDLINE
| ID: mdl-25743468
ABSTRACT
We present a straightforward method for measuring the relative viscosity of fluids via a simple graphical analysis of the normalised position autocorrelation function of an optically trapped bead, without the need of embarking on laborious calculations. The advantages of the proposed microrheology method are evident when it is adopted for measurements of materials whose availability is limited, such as those involved in biological studies. The method has been validated by direct comparison with conventional bulk rheology methods, and has been applied both to characterise synthetic linear polyelectrolytes solutions and to study biomedical samples.
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Base de dados:
MEDLINE
Assunto principal:
Reologia
/
Pinças Ópticas
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article