Microfluidic device for refractive index measurement of fluid sample

Optofluidic Device for High Resolution Volume Refractive Index Measurement of Single Cell

This paper reports a label-free biosensor combining microfluidics and optical detection based on a Fabry-Perot refractometer. The device monolithically integrates waveguides coupled to distributed Bragg mirrors and also a hydrodynamic particle injector enabling cells to enter the sensor cavity. Recent developments in sub-populations identification based on volumetric refractive index measuremen...

Measurement of refractive index of PF-5060

For optical studies of boiling heat transfer process, it is essential that the refractive index and its dependence on temperature for the test liquid be known. In this work a simple set-up was built to measure the refractive index of Fluorinert Liquid PF-5060 with temperature compensation and temperature control. The pinhole laser light beam was used for determining the refraction angle. The re...

Three-Dimensional Holographic Refractive-Index Measurement of Continuously Flowing Cells in a Microfluidic Channel.

Refractive index of biological specimens is a source of intrinsic contrast that can be explored without any concerns of photobleaching or harmful effects caused by extra contrast agents. In addition, RI contains rich information related to the metabolism of cells at the cellular and subcellular levels. Here, we report a no-moving parts approach that provides three-dimensional refractive index m...

Tip sensor probe for changing refractive index measurement in small volumes

In this paper, a tapered tip optical fiber probe sensor for localized refractive index (RI) measurements is presented. This sensor’s interaction with analytes is confined to a few micro-meters which makes it a promising candidate for in-vivo or even intra-cellular RI monitoring. This tapered tip was simply fabricated by etching optical fiber with hydrofluoric acid to a conic shape with a sub-m...

Refractive-index measurement of absorbing condensed media.