Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/2893
| Title: | Optofluidic refractometer using resonant optical tunneling effect | Authors: | Jian, A Zhang, X Zhu, WM Yu, M |
Issue Date: | Dec-2010 | Source: | Biomicrofluidics, Dec. 2010, v. 4, no. 4, 043008, p. 1-11 | Abstract: | This paper presents the design and analysis of a liquid refractive index sensor that utilizes a unique physical mechanism of resonant optical tunneling effect (ROTE). The sensor consists of two hemicylindrical prisms, two air gaps, and a microfluidic channel. All parts can be microfabricated using an optical resin NOA81. Theoretical study shows that this ROTE sensor has extremely sharp transmission peak and achieves a sensitivity of 760 nm/refractive index unit (RIU) and a detectivity of 85 000 RIU⁻¹. Although the sensitivity is smaller than that of a typical surface plasmon resonance (SPR) sensor (3200 nm/RIU) and is comparable to a 95% reflectivity Fabry–Pérot (FP) etalon (440 nm/RIU), the detectivity is 17000 times larger than that of the SPR sensor and 85 times larger than that of the FP etalon. Such ROTE sensor could potentially achieve an ultrahigh sensitivity of 10⁻⁹ RIU, two orders higher than the best results of current methods. | Keywords: | Microfluidics Optical prisms Optical sensors Refractive index measurement Refractometers Surface plasmon resonance |
Publisher: | American Institute of Physics | Journal: | Biomicrofluidics | ISSN: | 1932-1058 (online) | DOI: | 10.1063/1.3502671 | Rights: | © 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in A.Q. Jian, X.M. Zhang, W.M. Zhu and M. Yu, Biomicrofluidics 4:4, 043008 (2010) and may be found at http://bmf.aip.org/resource/1/biomgb/v4/i4/p043008_s1. |
| Appears in Collections: | Journal/Magazine Article |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| BIOMGB-000004-043008_1.pdf | 1.99 MB | Adobe PDF | View/Open |
Access
View full-text via PolyU eLinks 
Page views
141
Last Week
1
1
Last month
Citations as of May 28, 2023
Downloads
135
Citations as of May 28, 2023
WEB OF SCIENCETM
Citations
18
Last Week
0
0
Last month
0
0
Citations as of Jun 1, 2023
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.