7/25/2019 Reviewer 1 Comment

1/1

This article is recommended to be published in Journal of Sensors and Actuators B by completing the

following questions and highlights.

The following are list of questions and suggestion for the author

1. What means by By specifying the relation curve of the phase difference "versus the

concentration c, the concentration c can thus be estimated with the measurement of the phase

difference (at the end of section 2.1, page 8). Please describes more details, if possible describe it by

using mathematical expression.

2. I did not find the description of a sentence This method has advantages of high stability and

high resolution because of common-path configuration and heterodyne phase measurement in the

results and conclusion. High stability and high resolution based on what? or it should be compare with

other results with difference methods.

3. Please re-check English structure and grammatical and writing style i.e In addition to using a

small TIR prism and yielding a high sensitivity (to infinitive : to + V).

4. Avoid long paragraph by remembering that one has a main sentence (topic sentence) and some

supporting sentence.

5. Is it possible to compare experimental result and theoretical model of phase difference as

function of solution concentration?